{"id":17002,"date":"2025-12-08T15:56:53","date_gmt":"2025-12-08T07:56:53","guid":{"rendered":"https:\/\/bdtime.cn\/?p=17002"},"modified":"2026-03-19T17:03:20","modified_gmt":"2026-03-19T09:03:20","slug":"solutions-de-transport-intelligentes","status":"publish","type":"post","link":"https:\/\/bdpnt.com\/fr\/solutions-de-transport-intelligentes\/","title":{"rendered":"Solutions unifi\u00e9es de temps et de fr\u00e9quence pour l'industrie des transports intelligents"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"17002\" class=\"elementor elementor-17002\" data-elementor-post-type=\"post\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-73d9772 e-flex e-con-boxed e-con e-parent\" data-id=\"73d9772\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c56dd0a elementor-widget elementor-widget-woocommerce-breadcrumb\" data-id=\"c56dd0a\" data-element_type=\"widget\" data-widget_type=\"woocommerce-breadcrumb.default\">\n\t\t\t\t\t<nav class=\"woocommerce-breadcrumb\" aria-label=\"Breadcrumb\" data-no-translation=\"\" data-trp-gettext=\"\">Accueil<\/nav>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-3891e37 e-con-full e-flex e-con e-parent\" data-id=\"3891e37\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-a8dd848 e-flex e-con-boxed e-con e-child\" data-id=\"a8dd848\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4f8903b elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"4f8903b\" data-element_type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Solutions unifi\u00e9es de temps et de fr\u00e9quence pour l'industrie des transports intelligents<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10f1cca elementor-widget elementor-widget-spacer\" data-id=\"10f1cca\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-fafd218 e-flex e-con-boxed e-con e-parent\" data-id=\"fafd218\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c5dbbd3 elementor-widget elementor-widget-spacer\" data-id=\"c5dbbd3\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37b0cb3 elementor-widget elementor-widget-heading\" data-id=\"37b0cb3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Solution unifi\u00e9e de temps et de fr\u00e9quence pour les transports intelligents<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3b520c elementor-widget elementor-widget-text-editor\" data-id=\"d3b520c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Un syst\u00e8me de temps pr\u00e9cis \u00e0 l'\u00e9chelle du territoire couvrant le contr\u00f4le du trafic urbain, la grande vitesse intelligente, le transport ferroviaire et la coop\u00e9ration v\u00e9hicule-route.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-416679b elementor-widget elementor-widget-spacer\" data-id=\"416679b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-4fe7d37 e-flex e-con-boxed e-con e-parent\" data-id=\"4fe7d37\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-108d087 e-con-full e-flex e-con e-child\" data-id=\"108d087\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-889f14a elementor-widget elementor-widget-text-editor\" data-id=\"889f14a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Il existe un besoin hi\u00e9rarchique clair de pr\u00e9cision de la synchronisation temporelle au sein des STI, qui peut \u00eatre class\u00e9 en fonction des caract\u00e9ristiques de l'entreprise :<\/p><ul><li><b><\/b><strong><b>Sub-microseconde et nanoseconde :<\/b><\/strong>Il convient \u00e0 la collaboration entre v\u00e9hicules et voies de guidage (V2X), aux syst\u00e8mes de signalisation de voies partielles, \u00e0 la corr\u00e9lation d'\u00e9v\u00e9nements pr\u00e9cis et \u00e0 la fusion de positionnements de haute pr\u00e9cision.<\/li><li><b><\/b><strong><b>Sous-milliseconde et microseconde :<\/b><\/strong>Convient au contr\u00f4le des signaux urbains (coordination des ondes vertes, priorit\u00e9 aux bus), \u00e0 la police \u00e9lectronique\/\u00e0 la criminalistique multi-dispositifs, \u00e0 la facturation des portiques, \u00e0 la d\u00e9tection d'\u00e9v\u00e9nements au niveau de la chauss\u00e9e, etc.<\/li><li><b><\/b><strong><b>Millisecondes :<\/b><\/strong>Convient \u00e0 la vid\u00e9osurveillance, \u00e0 la distribution d'informations, aux plates-formes de gestion, aux syst\u00e8mes bureautiques, etc.<\/li><\/ul><p>Les trois types de demandes susmentionn\u00e9es coexistent dans la m\u00eame ville et sur le m\u00eame r\u00e9seau routier, et il n'est pas possible de couvrir tous les sc\u00e9narios avec une seule pr\u00e9cision et un seul protocole ; il est donc n\u00e9cessaire de les faire co\u00efncider gr\u00e2ce \u00e0 une base de temps unifi\u00e9e et \u00e0 une strat\u00e9gie d'acc\u00e8s hi\u00e9rarchique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-f5cef93 e-con-full e-flex e-con e-child\" data-id=\"f5cef93\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-64dadaf elementor-widget elementor-widget-image\" data-id=\"64dadaf\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"358\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/07\/06dd6beef2ae92ffe8fab487c67ca92b.jpeg\" class=\"attachment-large size-large wp-image-16992\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/07\/06dd6beef2ae92ffe8fab487c67ca92b.jpeg 640w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/07\/06dd6beef2ae92ffe8fab487c67ca92b-300x168.jpeg 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/07\/06dd6beef2ae92ffe8fab487c67ca92b-18x10.jpeg 18w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/07\/06dd6beef2ae92ffe8fab487c67ca92b-600x336.jpeg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-c40282b e-flex e-con-boxed e-con e-parent\" data-id=\"c40282b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-055863f elementor-widget elementor-widget-spacer\" data-id=\"055863f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d99048a elementor-widget elementor-widget-heading\" data-id=\"d99048a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Probl\u00e8mes typiques du r\u00e9seau actuel<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-718b2b3 elementor-widget elementor-widget-text-editor\" data-id=\"718b2b3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Les probl\u00e8mes suivants se posent dans le r\u00e9seau actuel de gestion du trafic urbain et dans les projets d'autoroutes et de chemins de fer intelligents \u00e0 l'\u00e9chelle nationale :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d974e78 elementor-widget elementor-widget-spacer\" data-id=\"d974e78\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-0e6c0df e-flex e-con-boxed e-con e-parent\" data-id=\"0e6c0df\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-b2095c1 e-con-full e-flex e-con e-child\" data-id=\"b2095c1\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-90d4a62 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"90d4a62\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" class=\"icon\" viewbox=\"0 0 1024 1024\" width=\"200\" height=\"200\"><path d=\"M416.116778 121.565204 358.155952 66.84561 426.75564 0l220.289268 0L513.315556 121.565204 416.116778 121.565204zM496.194233 568.168615l64.977136-56.24488L617.759438 568.168615 582.410961 963.217398l-66.082967 60.782602L460.883889 963.217398 496.194233 568.168615zM533.563713 144.330081l132.280331-120.001787L628.360168 446.641543l-67.188799 65.320325-54.338274-65.320325L533.563713 144.330081z\" fill=\"#0042B2\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe2191a elementor-widget elementor-widget-heading\" data-id=\"fe2191a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Grande dur\u00e9e de vie des \u00e9quipements entre les g\u00e9n\u00e9rations<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65dc745 elementor-widget elementor-widget-text-editor\" data-id=\"65dc745\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Les routeurs centraux et certains commutateurs d'agr\u00e9gation prennent d\u00e9j\u00e0 en charge le protocole PTP ;<\/li><li>Les commutateurs d'acc\u00e8s au stock en vrac ne prennent en charge que le transfert de base de la couche 3 et ne prennent pas en charge l'horodatage mat\u00e9riel PTP ou la fonctionnalit\u00e9 BC\/TC ;<\/li><li>Les protocoles pris en charge par les dispositifs frontaux ne sont pas uniformes : certains prennent en charge le PTP, d'autres uniquement le NTP ou la synchronisation par port s\u00e9rie.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-880516e e-con-full e-flex e-con e-child\" data-id=\"880516e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc36e39 elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"dc36e39\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" class=\"icon\" viewbox=\"0 0 1024 1024\" width=\"200\" height=\"200\"><path d=\"M309.935797 885.784114 177.499744 1004.040223l32.482861-365.364754c0.770649-9.209257 1.502766-18.457047 3.891778-26.125006 2.427545-7.667959 4.932154-13.794619 9.132192-18.457047 0 0 8.554205-7.667959 22.657085-21.501111l41.037066-39.881093 50.747245 53.714245L309.935797 885.784114zM656.650842 901.158564l56.064724 61.420736-66.776747 61.420736L194.569622 1024.000036l138.17739-122.841472L656.650842 901.158564zM690.636469 552.671026c-16.954281 16.877216-30.363576 21.501111-65.659306 21.501111L360.95277 574.172137 305.042175 514.292699l43.695806-44.504987c5.625739-6.126661 12.869841-10.750555 20.268072-13.833152 7.398232-3.044064 13.409295-4.585362 21.077254-4.585362l24.583707 0 265.604224 0 55.872062 59.91797L690.636469 552.671026zM382.877738 122.841472 326.967143 62.923502 392.048462 0l313.191808 0c30.671835 0 45.198572 7.667959 62.26845 27.627771l20.576332 24.583707-78.259419 70.629993L382.877738 122.841472zM725.431277 142.762752l79.762185-70.629993 27.242447 30.710368c3.352324 3.082597 7.089972 10.750555 11.097348 21.501111 1.926623 4.623895 2.35048 9.24779 2.735804 13.833152 0.539454 6.126661-0.038532 16.877216-0.385325 30.710368l-21.578176 227.187364c-2.19635 27.666304-7.359699 38.416859-27.126849 58.338139l-42.578365 39.919625-55.756465-58.338139L725.431277 142.762752z\" fill=\"#0042B2\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e59754c elementor-widget elementor-widget-heading\" data-id=\"e59754c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Utilisation mixte de dispositifs de synchronisation, piles de protocoles non uniformes<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b086925 elementor-widget elementor-widget-text-editor\" data-id=\"b086925\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Coexistence de plusieurs syst\u00e8mes de synchronisation au sein d'un m\u00eame r\u00e9seau<\/li><li>Les sources de temps ne sont pas g\u00e9r\u00e9es de mani\u00e8re uniforme et il existe des \u00e9carts de quelques secondes, voire de quelques minutes, entre les syst\u00e8mes.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-92501bf e-con-full e-flex e-con e-child\" data-id=\"92501bf\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cfbf1cc elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"cfbf1cc\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" class=\"icon\" viewbox=\"0 0 1024 1024\" width=\"200\" height=\"200\"><path d=\"M606.286201 901.158566l63.000567 70.629993-32.636991 30.710368c-17.069878 15.297385-36.490237 21.501111-71.785967 21.501111L265.505153 1024.000039 209.594558 964.120601l77.373173-62.962034L606.286201 901.158566zM645.242515 451.330666l58.993191 59.91797L634.491959 574.133606 316.714788 574.133606l-60.804217-62.923502 71.51624-59.91797L645.242515 451.292134zM355.516972 122.841472l-57.413361-59.91797L366.267528 0l302.441253 0c13.833152 0 23.158007 1.502766 26.240603 1.502766 10.904685 1.541298 27.203914 12.291854 40.805872 27.704836l20.576332 24.545175-81.457614 69.088695L355.516972 122.841472zM652.987538 592.55212l69.589617-64.4648 27.011252 27.627772c15.297385 16.877216 20.961656 29.16907 22.464422 46.084818 0.693584 7.667959 1.348636 15.297385 0.462389 23.003877l-22.002033 239.517751c-2.19635 27.627772-8.7854 39.919625-30.093849 59.879438l-35.681055 30.710368-57.952815-66.044631L652.987538 592.55212zM693.215423 139.680156l80.031913-67.547397 20.306605 21.501111c11.983594 13.833152 19.304761 27.666304 20.653397 43.002222 0.539454 6.126661-0.038532 16.877216-1.541298 35.29573l-20.422202 222.602003c-2.04222 29.16907-7.244102 39.919625-24.198383 56.796841l-45.352702 42.963689-57.336296-58.33814L693.215423 139.680156z\" fill=\"#0042B2\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a25f036 elementor-widget elementor-widget-heading\" data-id=\"a25f036\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Absence d'outils unifi\u00e9s de surveillance, d'exploitation et de maintenance<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d28a17a elementor-widget elementor-widget-text-editor\" data-id=\"d28a17a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Absence de contr\u00f4le visuel de la qualit\u00e9 des sources temporelles sup\u00e9rieures (BeiDou, GPS, PTP de niveau sup\u00e9rieur) ;<\/li><li>Absence de surveillance centralis\u00e9e de la d\u00e9viation et de la gigue des clients PTP\/NTP en aval ;<\/li><li>En cas de panne de l'onde verte, de litige judiciaire ou de plainte concernant la facturation, il est difficile de d\u00e9terminer rapidement si la synchronisation temporelle est la cause premi\u00e8re.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-1576fe1 e-con-full e-flex e-con e-child\" data-id=\"1576fe1\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e73306a elementor-view-default elementor-widget elementor-widget-icon\" data-id=\"e73306a\" data-element_type=\"widget\" data-widget_type=\"icon.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-wrapper\">\n\t\t\t<div class=\"elementor-icon\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" class=\"icon\" viewbox=\"0 0 1024 1024\" width=\"200\" height=\"200\"><path d=\"M323.635 438.182l-63.99 60.249-28.273-30.124c-14.854-15.044-23.85-31.637-25.173-46.68-0.53-5.972 0.038-16.555 0.227-31.636l30.2-326.756L303.376 0l53.71 63.235-33.451 374.947z m323.43 13.532l55.108 61.76-73.175 58.737h-248.44c-13.57 0-22.604 0-27.253-1.512-13.531 0-30.766-7.522-38.968-15.043l-38.176-40.632 68.262-63.273h302.642z m91.469 512.037L673.03 1024l-54.957-60.249 33.564-373.51 64.255-57.226 56.205 57.225-33.564 373.511z m45.886-525.569l-65.503 60.249-53.596-61.76 32.203-371.925L764.16 0l53.861 64.746-33.601 373.436z\" fill=\"#0042B2\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-322b516 elementor-widget elementor-widget-heading\" data-id=\"322b516\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Segmentation du domaine de s\u00e9curit\u00e9 et fragmentation de la base de temps<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-614ca9c elementor-widget elementor-widget-text-editor\" data-id=\"614ca9c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Les r\u00e9seaux de s\u00e9curit\u00e9 publique, les r\u00e9seaux vid\u00e9o sp\u00e9cialis\u00e9s, les r\u00e9seaux gouvernementaux et les r\u00e9seaux sp\u00e9cialis\u00e9s pour la collaboration entre les v\u00e9hicules et les routes font l'objet d'une isolation physique ou logique ;<\/li><li>Les dispositifs de chronom\u00e9trage sont souvent d\u00e9ploy\u00e9s ind\u00e9pendamment au sein de chaque domaine de s\u00e9curit\u00e9, ce qui entra\u00eene des incoh\u00e9rences dans les lignes de base temporelles ;<\/li><li>Manque de moyens techniques pour obtenir une r\u00e9f\u00e9rence temporelle uniforme dans le contexte d'un \"trafic r\u00e9seau d\u00e9connect\u00e9\".<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-1d3dc84 e-flex e-con-boxed e-con e-parent\" data-id=\"1d3dc84\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b33a5da elementor-widget elementor-widget-spacer\" data-id=\"b33a5da\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fd2c454 elementor-widget elementor-widget-heading\" data-id=\"fd2c454\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Principes de conception<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b131892 elementor-widget elementor-widget-text-editor\" data-id=\"b131892\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La conception g\u00e9n\u00e9rale du programme est guid\u00e9e par les trois principes suivants :<b><\/b><strong><b>Harmonisation des crit\u00e8res de r\u00e9f\u00e9rence,<\/b><\/strong><b><\/b><strong><b>Acc\u00e8s par paliers,<\/b><\/strong><b><\/b><strong><b>progr\u00e8s sans heurts<\/b><\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f945b6 elementor-widget elementor-widget-spacer\" data-id=\"9f945b6\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-555e7de e-flex e-con-boxed e-con e-parent\" data-id=\"555e7de\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-afe25b6 e-con-full e-flex e-con e-child\" data-id=\"afe25b6\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3a751d9 elementor-widget elementor-widget-heading\" data-id=\"3a751d9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">structure g\u00e9n\u00e9rale<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef52de0 elementor-widget elementor-widget-text-editor\" data-id=\"ef52de0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b><\/b><strong><b>couche centrale<\/b><\/strong><\/p><ul><li>Compos\u00e9 d'un serveur d'horloge T830, il permet une s\u00e9lection intelligente de plusieurs sources de r\u00e9f\u00e9rence, de deux moteurs PTP\/NTP et de plusieurs sorties d'interface (PTP, NTP, 1PPS, 10 MHz, IRIG-B, etc.) ;<\/li><li>Fournit plusieurs ports Ethernet, tous les ports partagent le m\u00eame syst\u00e8me d'exploitation et la m\u00eame fronti\u00e8re de s\u00e9curit\u00e9, peuvent \u00eatre logiquement divis\u00e9s en segments de r\u00e9seau de service au sein du m\u00eame domaine de s\u00e9curit\u00e9, et fournissent une base de temps unifi\u00e9e pour diff\u00e9rents VLAN\/sous-r\u00e9seaux de service.<\/li><\/ul><p><strong style=\"font-size: 16px;\"><b>couche transport<\/b><\/strong><\/p><ul><li>Le trafic d'autorisation PTP\/NTP peut \u00eatre utilis\u00e9 :<\/li><li>Backbone PTP avec support BC\/TC ;<\/li><li>PTP unicast bas\u00e9 sur 8275.2 ;<\/li><li>NTP sur les r\u00e9seaux existants de niveau 3.<\/li><\/ul><p><b><\/b><strong><b>couche d'acc\u00e8s<\/b><\/strong><\/p><ul><li>Pour des points de terminaison professionnels sp\u00e9cifiques, y compris<\/li><li>Signaux urbains, radar, RSU, contr\u00f4leurs de portique, \u00e9quipement de signalisation des voies ;<\/li><li>Police \u00e9lectronique, ba\u00efonnette, front-end vid\u00e9o, PIS, AFC, plateforme de gestion, etc ;<\/li><li>S\u00e9lectionnez la m\u00e9thode d'acc\u00e8s PTP ou NTP en fonction du niveau de service.<\/li><\/ul><p><b><\/b><strong><b>Sous-syst\u00e8mes industriels<\/b><\/strong><\/p><ul><li>La gestion du trafic urbain, la grande vitesse intelligente, le transport ferroviaire, la coop\u00e9ration v\u00e9hicule-route, etc. sont reli\u00e9s \u00e0 la couche centrale par leurs r\u00e9seaux sp\u00e9cialis\u00e9s respectifs ou par des r\u00e9seaux d\u00e9di\u00e9s afin de partager une r\u00e9f\u00e9rence temporelle unifi\u00e9e.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-1e5bbde e-con-full e-flex e-con e-child\" data-id=\"1e5bbde\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e23ad0 elementor-widget elementor-widget-image\" data-id=\"5e23ad0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"992\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-1024x992.png\" class=\"attachment-large size-large wp-image-17049\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-1024x992.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-300x291.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-768x744.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-12x12.png 12w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121-600x581.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247121.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-106918f e-flex e-con-boxed e-con e-parent\" data-id=\"106918f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-47055f6 elementor-widget elementor-widget-spacer\" data-id=\"47055f6\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7cd3949 elementor-widget elementor-widget-heading\" data-id=\"7cd3949\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">architecture du syst\u00e8me<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bb47099 elementor-widget elementor-widget-spacer\" data-id=\"bb47099\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-f4a2ddc e-flex e-con-boxed e-con e-parent\" data-id=\"f4a2ddc\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e8b6e3c e-n-tabs-mobile elementor-widget elementor-widget-n-tabs\" data-id=\"e8b6e3c\" data-element_type=\"widget\" data-settings=\"{&quot;horizontal_scroll&quot;:&quot;disable&quot;}\" data-widget_type=\"nested-tabs.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-tabs\" data-widget-number=\"244018748\" aria-label=\"Onglets. Ouvrez des \u00e9l\u00e9ments avec Entrer ou Espace, fermez-les avec Echape et naviguez \u00e0 l&#039;aide des touches fl\u00e9ch\u00e9es.\" data-no-translation-aria-label=\"\">\n\t\t\t<div class=\"e-n-tabs-heading\" role=\"tablist\">\n\t\t\t\t\t<button id=\"e-n-tab-title-2440187481\" class=\"e-n-tab-title\" aria-selected=\"true\" data-tab-index=\"1\" role=\"tab\" tabindex=\"0\" aria-controls=\"e-n-tab-content-2440187481\" style=\"--n-tabs-title-order: 1;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tCouche centrale (T830)\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-2440187482\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"2\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-2440187482\" style=\"--n-tabs-title-order: 2;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tcouche transport\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t<button id=\"e-n-tab-title-2440187483\" class=\"e-n-tab-title\" aria-selected=\"false\" data-tab-index=\"3\" role=\"tab\" tabindex=\"-1\" aria-controls=\"e-n-tab-content-2440187483\" style=\"--n-tabs-title-order: 3;\">\n\t\t\t\t\t\t<span class=\"e-n-tab-title-text\">\n\t\t\t\tcouche d'acc\u00e8s\t\t\t<\/span>\n\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t\t\t<div class=\"e-n-tabs-content\">\n\t\t\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" id=\"e-n-tab-content-2440187481\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-2440187481\" data-tab-index=\"1\" style=\"--n-tabs-title-order: 1;\" class=\"e-active elementor-element elementor-element-98f2512 e-con-full e-flex e-con e-child\" data-id=\"98f2512\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-007fac9 elementor-widget elementor-widget-text-editor\" data-id=\"007fac9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La couche centrale est centr\u00e9e sur le serveur d'horloge haute performance T830, qui fournit une r\u00e9f\u00e9rence temporelle unifi\u00e9e et une capacit\u00e9 de sortie multiprotocole :<\/p><h5><strong>1\u3001Source de r\u00e9f\u00e9rence multiple et s\u00e9lection intelligente de la source<\/strong><\/h5><p>Diverses sources de r\u00e9f\u00e9rence en amont sont prises en charge : signaux de synchronisation BeiDou, autres GNSS tels que GPS, PTP de niveau sup\u00e9rieur (donn\u00e9es PTP fournies par le groupe ou ailleurs) et sources de r\u00e9f\u00e9rence c\u00e2bl\u00e9es telles que 1PPS\/10 MHz terrestres.<\/p><h5><strong>2\u3001PTP\/NTP architecture \u00e0 double moteur<\/strong><\/h5><ul><li><b><\/b><strong><b>Moteur PTP<\/b><\/strong><ul><li>Mise en \u0153uvre de la fonctionnalit\u00e9 IEEE 1588v2 PTP Grandmaster\/BC bas\u00e9e sur les horodatages mat\u00e9riels ;<\/li><li>Supporte le multi-domaine, le multi-profil (par exemple, G.8275.1, G.8275.2), et peut fournir des domaines temporels PTP ind\u00e9pendants pour diff\u00e9rents domaines d'activit\u00e9 ;<\/li><li>Prend en charge les param\u00e8tres configurables pour le d\u00e9bit des messages, le m\u00e9canisme de retard et la priorit\u00e9.<\/li><\/ul><\/li><li><b><\/b><strong><b>Moteur NTP<\/b><\/strong><ul><li>Serveur NTP int\u00e9gr\u00e9 \u00e0 haute concurrence, supportant la synchronisation simultan\u00e9e de terminaux \u00e0 grande \u00e9chelle ;<\/li><li>Prise en charge du contr\u00f4le des sources d'acc\u00e8s (ACL) en liaison avec les politiques de s\u00e9curit\u00e9 du r\u00e9seau.<\/li><\/ul><\/li><\/ul><p>Les deux moteurs partagent la m\u00eame horloge atomique comme source d'horloge locale et le m\u00eame ensemble d'algorithmes de s\u00e9lection intelligente de sources multir\u00e9f\u00e9rences pour garantir que les sorties PTP et NTP sont dans la m\u00eame base de temps.<\/p><h5><strong>3\u3001Sortie de port multi-r\u00e9seau<\/strong><\/h5><p>Le T830 offre plusieurs ports Ethernet pour un partitionnement logique des segments du r\u00e9seau d'entreprise sur le m\u00eame appareil :<\/p><ul><li><b><\/b><strong><b>Configuration ind\u00e9pendante des ports<\/b><\/strong><ul><li>Chaque port de r\u00e9seau physique peut \u00eatre configur\u00e9 ind\u00e9pendamment : adresse IP et sous-r\u00e9seau, politique de contr\u00f4le d'acc\u00e8s ; commutateur de fonction PTP, type de profil, taux de message ;<\/li><li>Les param\u00e8tres r\u00e9seau des diff\u00e9rents ports sont ind\u00e9pendants les uns des autres.<\/li><\/ul><\/li><li><b><\/b><strong><b>isolation de la couche r\u00e9seau<\/b><\/strong><ul><li>Tous les ports physiques du r\u00e9seau partagent le m\u00eame syst\u00e8me d'exploitation et le m\u00eame p\u00e9rim\u00e8tre de s\u00e9curit\u00e9 ;<\/li><li>Chaque port de r\u00e9seau est utilis\u00e9 au niveau du r\u00e9seau uniquement comme une sortie pour les services de synchronisation ;<\/li><\/ul><\/li><\/ul><ul><li><b><\/b><strong><b>Harmonisation des d\u00e9lais<\/b><\/strong><ul><li>La pile PTP\/NTP de tous les ports partage en interne la m\u00eame horloge atomique et le m\u00eame algorithme de sources de r\u00e9f\u00e9rence multiples ;<\/li><li>Fournir une base de temps unifi\u00e9e pour plusieurs segments de r\u00e9seaux commerciaux, sous r\u00e9serve d'un partitionnement logique.<\/li><\/ul><\/li><li><b><\/b><strong><b>D\u00e9claration sur les limites d'utilisation du domaine de s\u00e9curit\u00e9<\/b><\/strong><ul><li>Une conception \u00e0 ports multiples ne revient pas \u00e0 isoler physiquement un dispositif \u00e0 travers des domaines de s\u00e9curit\u00e9 ;<\/li><\/ul><\/li><\/ul><p>Pour les diff\u00e9rents domaines de s\u00e9curit\u00e9 qui n\u00e9cessitent une isolation physique dans la sp\u00e9cification de s\u00e9curit\u00e9 (par exemple, le r\u00e9seau priv\u00e9 de s\u00e9curit\u00e9 publique et le r\u00e9seau externe), le T830 doit \u00eatre d\u00e9ploy\u00e9 ou d'autres moyens d'isolation doivent \u00eatre utilis\u00e9s dans chaque domaine de s\u00e9curit\u00e9 s\u00e9par\u00e9ment, et la synchronisation ne doit pas \u00eatre assur\u00e9e par un seul T830 dans tous les domaines en m\u00eame temps.<\/p><p><a href=\"https:\/\/bdtime.cn\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122.png\"><img decoding=\"async\" class=\"wp-image-17060 size-large aligncenter\" src=\"https:\/\/bdtime.cn\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-1024x495.png\" alt=\"\" width=\"1024\" height=\"495\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-1024x495.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-300x145.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-768x371.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-18x9.png 18w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122-600x290.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247122.png 1083w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p><h5><strong>4. capacit\u00e9 de chronom\u00e9trage et interface de sortie<\/strong><\/h5><p>Ponctualit\u00e9 :<\/p><ul><li>Des cristaux thermostatiques ou des horloges au rubidium en option permettent d'obtenir une pr\u00e9cision horaire ou journali\u00e8re en cas de d\u00e9faillance de la source de r\u00e9f\u00e9rence en amont ;<\/li><li>Le c\u00f4t\u00e9 sortie utilise des strat\u00e9gies de limitation de pas et de convergence progressive pour \u00e9viter l'impact des sauts temporels sur le syst\u00e8me d'entreprise.<\/li><\/ul><p>Interface de sortie :<\/p><ul><li>Sortie du protocole IP : PTP, NTP ;<\/li><li>Sortie du signal physique : 1 PPS, 10 MHz, IRIG-B (type de code en option) ;<\/li><\/ul><p>R\u00e9pondre aux besoins d'acc\u00e8s \u00e0 des syst\u00e8mes multi-professionnels tels que la signalisation, l'\u00e9lectricit\u00e9 et les faibles puissances.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" id=\"e-n-tab-content-2440187482\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-2440187482\" data-tab-index=\"2\" style=\"--n-tabs-title-order: 2;\" class=\"elementor-element elementor-element-5b0edb2 e-con-full e-flex e-con e-child\" data-id=\"5b0edb2\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9cab9d3 elementor-widget elementor-widget-text-editor\" data-id=\"9cab9d3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La couche transport est charg\u00e9e d'acheminer le trafic du protocole de synchronisation au sein du m\u00eame domaine de s\u00e9curit\u00e9 ou du m\u00eame r\u00e9seau accessible par la route, \u00e0 l'aide d'une conception modale :<\/p><h5><strong><b>1) Mode A : PTP BC\/TC Trunk (Multicast)<\/b><\/strong><\/h5><ul><li style=\"list-style-type: none;\"><ul><li>Condition : PTP BC\/TC et SyncE sont universellement pris en charge sur les commutateurs centraux, d'agr\u00e9gation et d'acc\u00e8s ;<\/li><li>Topologie du r\u00e9seau : Core T830 en tant que GM, extension des domaines PTP en aval par le biais de BC\/TC \u00e0 plusieurs niveaux ;<\/li><li>Sc\u00e9narios applicables :<ul><li>Nouvelles zones de d\u00e9monstration ;<\/li><li>R\u00e9seau de signalisation orbital ;<\/li><li>Les r\u00e9seaux sp\u00e9cialis\u00e9s qui n\u00e9cessitent une pr\u00e9cision inf\u00e9rieure \u00e0 la microseconde ou \u00e0 la nanoseconde, tels que les r\u00e9seaux sp\u00e9cialis\u00e9s pour la coop\u00e9ration entre les v\u00e9hicules et les routes.<\/li><\/ul><\/li><\/ul><\/li><\/ul><h5><strong>2) Mode B : Unicast PTP (G.8275.2)<\/strong><\/h5><ul><li>Condition : le r\u00e9seau de transport interm\u00e9diaire ne prend en charge que le transfert normal de la couche 3 et ne dispose pas de la fonctionnalit\u00e9 PTP BC\/TC ;<\/li><li>Topologie du r\u00e9seau : le T830 ou l'horloge fronti\u00e8re PTP \u00e9tablit une session PTP un \u00e0 un avec le terminal ou la minicloche de bord via G.8275.2, l'appareil interm\u00e9diaire se chargeant uniquement de la transmission IP ;<\/li><li>Sc\u00e9narios applicables : r\u00e9seau d'inventaire de gestion du trafic urbain, agr\u00e9gation\/acc\u00e8s ne prenant pas uniform\u00e9ment en charge le protocole PTP ; tron\u00e7ons routiers \u00e0 grande vitesse traversant la ligne priv\u00e9e du transporteur ou les liaisons cl\u00e9s du r\u00e9seau multiniveau \u00e0 trois niveaux ; pr\u00e9cision cible de microsecondes \u00e0 des sc\u00e9narios inf\u00e9rieurs \u00e0 la microseconde.<\/li><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\"><ul><li style=\"list-style-type: none;\">\u00a0<\/li><\/ul><\/li><\/ul><\/li><\/ul><\/li><\/ul><h5><b><\/b><strong><b>Mode C : Mode NTP uniquement<\/b><\/strong><\/h5><ul><li>Condition : Le r\u00e9seau est uniquement capable de fournir une connectivit\u00e9 IP de base et n'est pas adapt\u00e9 \u00e0 l'introduction du protocole PTP ;<\/li><li>Topologie du r\u00e9seau : le T830 agit en tant que serveur NTP en amont, en synchronisant directement les points d'extr\u00e9mit\u00e9 ou les serveurs NTP subordonn\u00e9s ;<\/li><li>Sc\u00e9narios applicables : vid\u00e9osurveillance, plate-forme de gestion, syst\u00e8me bureautique ; sites p\u00e9riph\u00e9riques, intersections ind\u00e9pendantes, petites gares de p\u00e9age et autres zones o\u00f9 les conditions de r\u00e9seau sont restreintes ;<\/li><li>Exige une pr\u00e9cision temporelle de l'ordre de la milliseconde ou de la sous-milliseconde.<\/li><\/ul><p>Les trois modes peuvent exister en parall\u00e8le dans la m\u00eame ville ou sur le m\u00eame r\u00e9seau routier, les combinaisons \u00e9tant choisies en fonction des conditions du r\u00e9seau et des niveaux de service.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" id=\"e-n-tab-content-2440187483\" role=\"tabpanel\" aria-labelledby=\"e-n-tab-title-2440187483\" data-tab-index=\"3\" style=\"--n-tabs-title-order: 3;\" class=\"elementor-element elementor-element-66775d5 e-flex e-con-boxed e-con e-child\" data-id=\"66775d5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b3c7e97 elementor-widget elementor-widget-text-editor\" data-id=\"b3c7e97\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Niveau d'acc\u00e8s \u00e0 tous les types de terminaux professionnels, en fonction du niveau de pr\u00e9cision et des capacit\u00e9s de protocole de la m\u00e9thode d'acc\u00e8s :<b><\/b><\/p><h5><strong><b>1. terminal d'acc\u00e8s PTP<\/b><\/strong><\/h5><p>Y compris : machine de signalisation, RSU, \u00e9quipement de signalisation de voie, partie du contr\u00f4leur de portique, radar de haute pr\u00e9cision, etc ;<\/p><p>M\u00e9thode d'acc\u00e8s : dans le r\u00e9seau en mode A, en tant que client PTP pour acc\u00e9der au commutateur d'acc\u00e8s qui prend en charge le PTP ; dans le r\u00e9seau en mode B, pour \u00e9tablir une session directement avec le T830 ou l'horloge fronti\u00e8re via le PTP Unicast.<\/p><h5><b><\/b><strong><b>2. terminaux hybrides PTP\/NTP<\/b><\/strong><\/h5><p>Notamment : ordinateur central de police \u00e9lectronique multifonctionnel, \u00e9quipement de base du syst\u00e8me de ba\u00efonnette, etc ;<\/p><p>M\u00e9thode d'acc\u00e8s : acc\u00e8s PTP pour l'\u00e9quipement principal ; acc\u00e8s NTP pour l'\u00e9quipement p\u00e9riph\u00e9rique, pointant uniform\u00e9ment vers la ligne de temps T830.<\/p><h5><b><\/b><strong><b>Terminal d'acc\u00e8s NTP<\/b><\/strong><\/h5><p>Y compris : cam\u00e9ras, PIS, AFC, plate-forme de gestion, terminaux de bureau, etc ;<\/p><p>M\u00e9thode d'acc\u00e8s : Acc\u00e8s au T830 local ou au serveur NTP subordonn\u00e9 par l'interm\u00e9diaire d'un client NTP.<\/p><p>La couche d'acc\u00e8s est configur\u00e9e selon le principe suivant :<strong><b>La priorit\u00e9 est donn\u00e9e au PTP pour les dispositifs de contr\u00f4le critiques, au NTP pour les dispositifs d'enregistrement et d'affichage, et tous les terminaux sont unifi\u00e9s pour pointer vers quelques n\u0153uds T830 ou leurs serveurs subordonn\u00e9s en tant que source d'horloge en amont.<\/b><\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67cd9a1 elementor-hidden-desktop elementor-hidden-tablet elementor-widget elementor-widget-spacer\" data-id=\"67cd9a1\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-9683ebe e-flex e-con-boxed e-con e-parent\" data-id=\"9683ebe\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f02869c elementor-widget elementor-widget-spacer\" data-id=\"f02869c\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac30b71 elementor-widget elementor-widget-heading\" data-id=\"ac30b71\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Topologie du trafic routier urbain<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8eefa6a elementor-widget elementor-widget-text-editor\" data-id=\"8eefa6a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Dans cette topologie, PTP Unicast est utilis\u00e9 pour l'acc\u00e8s frontal direct aux services de contr\u00f4le des signaux (niveau 1) et l'acc\u00e8s convergent NTP pour les services de police \u00e9lectrique\/vid\u00e9o (niveau 2\/3).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-2d6394d e-flex e-con-boxed e-con e-parent\" data-id=\"2d6394d\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-44c1e8b e-con-full e-flex e-con e-child\" data-id=\"44c1e8b\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-264177a elementor-widget elementor-widget-text-editor\" data-id=\"264177a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le sc\u00e9nario de gestion du trafic urbain peut \u00eatre d\u00e9compos\u00e9 en quatre couches en fonction de la topologie du r\u00e9seau :<\/p><ol><li><b><\/b><strong><b>Plancher de la salle informatique centrale<\/b><\/strong>Salle du centre de commandement du d\u00e9tachement de la police de la circulation, d\u00e9ploiement de T830, acc\u00e8s au commutateur central.<\/li><li><b><\/b><strong><b>Couche de convergence r\u00e9gionale<\/b><\/strong>Les commutateurs d'agr\u00e9gation des succursales ou des sous-centres r\u00e9gionaux, dont la plupart sont des dispositifs de transfert de couche 3 uniquement, certains dispositifs plus r\u00e9cents prenant en charge le protocole PTP.<\/li><li><b><\/b><strong><b>couche d'acc\u00e8s<\/b><\/strong>Les commutateurs d'acc\u00e8s : Un grand nombre de commutateurs d'acc\u00e8s dans les armoires des routes et des intersections sont des dispositifs de stock qui ne prennent pas en charge le protocole PTP.<\/li><li><b><\/b><strong><b>couche terminale<\/b><\/strong>Les machines \u00e0 signaux, les radars, les frontaux de police \u00e9lectronique, les frontaux de ba\u00efonnette, les cam\u00e9ras, les cartes de renseignement, etc.<\/li><\/ol><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-c3e8843 e-con-full e-flex e-con e-child\" data-id=\"c3e8843\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-db3ec40 elementor-widget elementor-widget-image\" data-id=\"db3ec40\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"632\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-1024x632.png\" class=\"attachment-large size-large wp-image-17074\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-1024x632.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-300x185.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-768x474.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-18x12.png 18w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123-600x370.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247123.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-694b076 e-flex e-con-boxed e-con e-parent\" data-id=\"694b076\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9da50d8 elementor-widget elementor-widget-spacer\" data-id=\"9da50d8\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5994ca4 elementor-widget elementor-widget-heading\" data-id=\"5994ca4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Architecture intelligente en cascade \u00e0 trois niveaux et \u00e0 grande vitesse<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-971cdbb elementor-widget elementor-widget-text-editor\" data-id=\"971cdbb\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En fonction de la gestion de l'exploitation et de la maintenance et de la configuration du r\u00e9seau, le syst\u00e8me intelligent \u00e0 grande vitesse adopte le plus souvent la topologie \u00e0 trois niveaux \"centre provincial - centre de tron\u00e7on routier - station de p\u00e9age\/passerelle\". Le syst\u00e8me de chronom\u00e9trage suit cette topologie pour la mise en cascade :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-2034d16 e-flex e-con-boxed e-con e-parent\" data-id=\"2034d16\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-d757725 e-con-full e-flex e-con e-child\" data-id=\"d757725\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-901e940 elementor-widget elementor-widget-image\" data-id=\"901e940\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"793\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-1024x793.png\" class=\"attachment-large size-large wp-image-17075\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-1024x793.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-300x232.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-768x595.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-15x12.png 15w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124-600x465.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247124.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-708db0a e-con-full e-flex e-con e-child\" data-id=\"708db0a\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ba4b903 elementor-widget elementor-widget-text-editor\" data-id=\"ba4b903\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h5><b><\/b><strong>1. au niveau du centre provincial<\/strong><\/h5><ul><li>D\u00e9ployer le centre provincial T830 dans les centres de donn\u00e9es du groupe provincial \u00e0 grande vitesse :<\/li><li>Acc\u00e8s en amont \u00e0 Beidou\/GPS, PTP sup\u00e9rieur ou 1PPS\/10 MHz ;<\/li><li>L'aval fournit PTP\/NTP \u00e0 chaque centre de segment via le r\u00e9seau priv\u00e9 IP du groupe ou le r\u00e9seau de transport.<\/li><\/ul><h5><b><\/b><strong><b>2. niveau du centre du tron\u00e7on routier<\/b><\/strong><\/h5><ul><li>Un T830 est d\u00e9ploy\u00e9 dans chaque centre de gestion des routes :<\/li><li>La liaison montante agit comme un client PTP ou NTP, synchronis\u00e9 avec le centre provincial T830 ;<\/li><li>La liaison descendante sert d'horloge ma\u00eetresse pour cette section et fournit le PTP\/NTP pour les cabines de p\u00e9age et les portiques.<b><\/b><\/li><\/ul><h5><strong><b>3. au niveau du site (gare de p\u00e9age \/ portique \/ aire de service \/ salle des machines \u00e0 l'entr\u00e9e du tunnel)<\/b><\/strong><\/h5><ul><li>Les salles informatiques des postes de p\u00e9age sont reli\u00e9es au r\u00e9seau du centre routier par des lignes sp\u00e9cialis\u00e9es ou des fibres optiques ;<\/li><li>Les contr\u00f4leurs de portiques, les contr\u00f4leurs de voies et le syst\u00e8me de gestion vid\u00e9o de la station sont connect\u00e9s \u00e0 la salle informatique de la station de p\u00e9age par l'interm\u00e9diaire d'un commutateur local ;<\/li><li>Les armoires du portail du tunnel sont connect\u00e9es par fibre optique \u00e0 la salle des machines de la station de p\u00e9age la plus proche.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-853359c e-flex e-con-boxed e-con e-parent\" data-id=\"853359c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6242cfe elementor-widget elementor-widget-spacer\" data-id=\"6242cfe\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a81a91 elementor-widget elementor-widget-heading\" data-id=\"6a81a91\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Architecture intelligente en cascade \u00e0 trois niveaux et \u00e0 grande vitesse<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b781435 elementor-widget elementor-widget-text-editor\" data-id=\"b781435\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>En fonction de la gestion de l'exploitation et de la maintenance et de la configuration du r\u00e9seau, le syst\u00e8me intelligent \u00e0 grande vitesse adopte le plus souvent la topologie \u00e0 trois niveaux \"centre provincial - centre de tron\u00e7on routier - station de p\u00e9age\/passerelle\". Le syst\u00e8me de chronom\u00e9trage suit cette topologie pour la mise en cascade :<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-ea45fe5 e-flex e-con-boxed e-con e-parent\" data-id=\"ea45fe5\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-1846976 e-con-full e-flex e-con e-child\" data-id=\"1846976\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0b86338 elementor-widget elementor-widget-heading\" data-id=\"0b86338\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Architecture du syst\u00e8me d'horloge ferroviaire<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9cb24f elementor-widget elementor-widget-text-editor\" data-id=\"c9cb24f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Les syst\u00e8mes d'horloge-m\u00e8re conventionnels autonomes existent sur les lignes existantes ou dans le cadre de sc\u00e9narios d'expansion et de r\u00e9novation :<\/p><ul><li>L'\u00e9volution du T830 en tant qu'horloge ma\u00eetresse de premi\u00e8re classe rempla\u00e7ant une horloge ma\u00eetresse conventionnelle peut \u00eatre r\u00e9alis\u00e9e de la mani\u00e8re suivante :<ol><li>Phase initiale : l'horloge m\u00e8re d'origine reste en service, le T830 lui fournit une horloge en amont sous forme d'IRIG-B ou de 1PPS, afin de r\u00e9aliser le remplacement en douceur de \"l'horloge m\u00e8re \u00e0 l'horloge m\u00e8re\" ;<\/li><li>Phase de transition : les nouvelles stations ou les nouvelles sections de ligne utilisent directement le T830 comme horloge ma\u00eetresse primaire, les anciennes lignes conservent l'horloge ma\u00eetresse secondaire d'origine, le timing unifi\u00e9 du T830 ;<\/li><li>Phase d'ach\u00e8vement : basculement complet vers le syst\u00e8me T830 et mise hors service de l'ancien syst\u00e8me d'horloge ma\u00eetresse.<\/li><\/ol><\/li><\/ul><p>Maintenir la topologie \"horloge m\u00e8re primaire unifi\u00e9e, distribution de l'horloge m\u00e8re secondaire de la station\" tout au long du cycle de vie, sans modifier la classification de s\u00e9curit\u00e9 originale et le mode d'interface du transport ferroviaire.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-8142f7e e-con-full e-flex e-con e-child\" data-id=\"8142f7e\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7c67e6d elementor-widget elementor-widget-image\" data-id=\"7c67e6d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"494\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-1024x494.png\" class=\"attachment-large size-large wp-image-17080\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-1024x494.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-300x145.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-768x371.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-18x9.png 18w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-600x290.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-ab9e9e7 e-con-full elementor-hidden-mobile e-flex e-con e-child\" data-id=\"ab9e9e7\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f82dd83 elementor-widget elementor-widget-image\" data-id=\"f82dd83\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"494\" src=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-1024x494.png\" class=\"attachment-large size-large wp-image-17080\" alt=\"\" srcset=\"https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-1024x494.png 1024w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-300x145.png 300w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-768x371.png 768w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-18x9.png 18w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125-600x290.png 600w, https:\/\/bdpnt.com\/wp-content\/uploads\/2025\/12\/\u56fe\u7247125.png 1268w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-84f0bed e-con-full e-flex e-con e-child\" data-id=\"84f0bed\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-084f7ee elementor-widget elementor-widget-heading\" data-id=\"084f7ee\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Syst\u00e8me d'horloge v\u00e9hicule-circuit<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dcf2b84 elementor-widget elementor-widget-text-editor\" data-id=\"dcf2b84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le syst\u00e8me de collaboration v\u00e9hicule-route se compose d'un centre de contr\u00f4le de la zone de d\u00e9monstration, d'une unit\u00e9 de bord de route (RSU), d'un MEC, de capteurs et de terminaux de v\u00e9hicules avec la topologie suivante dans le domaine temporel :<\/p><ul><li>Le T830 est d\u00e9ploy\u00e9 dans la salle du centre de contr\u00f4le comme source d'horloge pour le r\u00e9seau de service VRS ;<\/li><li>Le T830 est connect\u00e9 au r\u00e9seau sp\u00e9cialis\u00e9 pour la coop\u00e9ration v\u00e9hicule-route par l'interm\u00e9diaire d'un port de r\u00e9seau de service ind\u00e9pendant, qui n'effectue pas de transfert L2\/L3 avec d'autres ports de r\u00e9seau de service dans l'appareil, ce qui forme une partition logique au niveau de la couche r\u00e9seau ;<\/li><li>Les commutateurs du centre de contr\u00f4le, les commutateurs d'agr\u00e9gation et les commutateurs d'acc\u00e8s routier constituent le r\u00e9seau de capacit\u00e9 PTP ;<\/li><li>Les RSU, les MEC et certains capteurs de haute pr\u00e9cision rejoignent le domaine temporel en tant que clients PTP.<\/li><\/ul><p>La capacit\u00e9 multiport du T830 est utilis\u00e9e pour distinguer les diff\u00e9rents segments du r\u00e9seau de service, et tous les ports du r\u00e9seau partagent le m\u00eame syst\u00e8me d'exploitation et les m\u00eames limites de s\u00e9curit\u00e9. En ce qui concerne les diff\u00e9rents domaines de s\u00e9curit\u00e9 (par exemple, le r\u00e9seau sp\u00e9cialis\u00e9 Vehicle-Road-Cooperation et d'autres r\u00e9seaux de service), l'isolation rel\u00e8ve de la responsabilit\u00e9 du r\u00e9seau et de l'\u00e9quipement de s\u00e9curit\u00e9 de la couche sup\u00e9rieure, et cet appareil n'assure pas de fonctions d'isolation physique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-68d4c3b e-flex e-con-boxed e-con e-parent\" data-id=\"68d4c3b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1badeff elementor-widget elementor-widget-spacer\" data-id=\"1badeff\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be0eac1 elementor-widget elementor-widget-heading\" data-id=\"be0eac1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\"> Liste de contr\u00f4le de la configuration<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af2cb43 elementor-widget elementor-widget-spacer\" data-id=\"af2cb43\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-fb4310f e-flex e-con-boxed e-con e-parent\" data-id=\"fb4310f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-32f9399 eael-table-align-center eael-dt-th-align-left elementor-widget elementor-widget-eael-data-table\" data-id=\"32f9399\" data-element_type=\"widget\" data-widget_type=\"eael-data-table.default\">\n\t\t\t\t\t\t\t<div class=\"eael-data-table-wrap\" data-table_id=\"32f9399\" id=\"eael-data-table-wrapper-32f9399\" data-custom_responsive=\"false\">\n\t\t\t<table class=\"tablesorter eael-data-table center\" id=\"eael-data-table-32f9399\">\n\t\t\t    <thead>\n\t\t\t        <tr class=\"table-header\">\n\t\t\t\t\t\t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Niveau de configuration<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Sc\u00e9narios d'application typiques<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Configuration du T830 (double ou non, type de cristal)<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Exigences en mati\u00e8re de commutateur\/PTP<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Mod\u00e8les de synchronisation typiques<\/span><\/th>\n\t\t\t        \t\t\t\t            <th class=\"sorting\" id=\"\" colspan=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"data-table-header-text\">Pr\u00e9cision typique de la synchronisation de bout en bout<\/span><\/th>\n\t\t\t        \t\t\t\t        <\/tr>\n\t\t\t    <\/thead>\n\t\t\t  \t<tbody>\n\t\t\t\t\t\t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tnavire amiral\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCentres provinciaux, centres de groupes \u00e0 grande vitesse, centres municipaux de police de la circulation, CCO ferroviaires, centres de contr\u00f4le des zones de d\u00e9monstration de la coordination v\u00e9hicule-route\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tD\u00e9ploiement multi-ordinateurs (ma\u00eetre\/secours ou double ma\u00eetre), horloge atomique ou au rubidium, partitionnement logique des ports multiservices (segments de signalisation\/vid\u00e9o\/gestion \u00e0 l'int\u00e9rieur du m\u00eame p\u00e9rim\u00e8tre de s\u00e9curit\u00e9).\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tLes commutateurs du noyau, de l'agr\u00e9gation et de l'acc\u00e8s critique prennent en charge PTP BC\/TC et SyncE ; le r\u00e9seau PTP complet est utilis\u00e9 pour la coop\u00e9ration entre les circuits de v\u00e9hicules et les syst\u00e8mes de signalisation.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tPTP (Multicast\/BC) primaire, Unicast suppl\u00e9mentaire, NTP et IRIG-B\/1PPS sorties parall\u00e8les\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tMicroseconde : 1-5 \u03bcs (coop\u00e9ration v\u00e9hicule-route, signalisation des voies) ; milliseconde : 1-5 ms (contr\u00f4le des signaux, portique) ; terminal NTP 10-50 ms.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tcours principal (d'une rivi\u00e8re)\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tSous-centres de contr\u00f4le de la circulation des districts et des comt\u00e9s, centres de gestion des tron\u00e7ons routiers, centres des grandes gares de p\u00e9age, tron\u00e7ons de routes urbaines g\u00e9n\u00e9rales.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tT830 unique, horloge au rubidium ou cristal de haute stabilit\u00e9, partitionnement logique des ports multiservices (segments front-end\/plateforme, etc. au sein du m\u00eame p\u00e9rim\u00e8tre de s\u00e9curit\u00e9)\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tLes commutateurs d'agr\u00e9gation centrale\/partielle supportent le PTP BC\/TC ; la couche d'acc\u00e8s peut \u00eatre constitu\u00e9e de commutateurs de couche 3 ordinaires ; les n\u0153uds cl\u00e9s peuvent \u00eatre directement connect\u00e9s avec le PTP Unicast.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCouche centrale PTP (Multicast\/BC) + Couche d'acc\u00e8s Unicast PTP + NTP Hybride\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tTerminaux Key PTP 10 \u03bcs \u00e0 1 ms ; terminaux Unicast PTP 1-5 ms ; terminaux NTP 10-50 ms\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00e9conomie\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tCabines de p\u00e9age de bordure, petites armoires autonomes de jonction, zones de service \u00e0 distance, anciennes zones localis\u00e9es\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tUn seul T830, un timing cristal normal compens\u00e9 en temp\u00e9rature, un seul port r\u00e9seau ou un petit nombre de ports r\u00e9seau (pas de partitionnement de segment n\u00e9cessaire).\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tLes commutateurs existants ne doivent prendre en charge que le transfert IP de base, sans exigences en mati\u00e8re de PTP.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tHorloge NTP pure (avec un petit nombre de sorties 1PPS\/IRIG-B)\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t   \t\t\t\t\t\t\t\t\t\t\t<td colspan=\"\" rowspan=\"\" class=\"\" id=\"\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"td-content-wrapper\"><div class=\"td-content\">\n\t\t\t\t\t\t\t\t\t\t\t\t\tLes d\u00e9calages temporels terminaux convergent vers une plage de 10 \u00e0 100 ms pour l'alignement des journaux et les besoins m\u00e9dico-l\u00e9gaux de base.\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t        \t\t\t    <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t  \t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-34b4edf elementor-widget elementor-widget-spacer\" data-id=\"34b4edf\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-eee66fe e-flex e-con-boxed e-con e-parent\" data-id=\"eee66fe\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-3fa433c e-con-full e-flex e-con e-child\" data-id=\"3fa433c\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-57104e0 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"57104e0\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/wp-content\/uploads\/2025\/12\/\u9762\u5411\u667a\u80fd\u4ea4\u901a\u884c\u4e1a\u7684\u7edf\u4e00\u65f6\u9891\u89e3\u51b3\u65b9\u6848.pdf\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Obtenir le programme complet<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-element elementor-element-67d4a75 e-con-full e-flex e-con e-child\" data-id=\"67d4a75\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38d9169 elementor-widget elementor-widget-text-editor\" data-id=\"38d9169\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Sur la base d'une r\u00e9f\u00e9rence d'horloge unifi\u00e9e, ce programme adopte le T830 pour construire une architecture de syst\u00e8me de temps et de fr\u00e9quence de \"base unifi\u00e9e, interface multimode et algorithme optimal\" : gr\u00e2ce \u00e0 la topologie hi\u00e9rarchique de l'horloge m\u00e8re de premier niveau\/centre de segment\/n\u0153ud r\u00e9gional, PTP, NTP, IRIG-B et 1PPS peuvent \u00eatre accessibles en fonction des exigences de l'entreprise de mani\u00e8re graduelle, de sorte que la pr\u00e9cision de synchronisation temporelle des services cl\u00e9s peut converger vers le niveau de la microseconde ou de la milliseconde, \u00e0 condition de ne pas forcer l'ensemble du r\u00e9seau \u00e0 \u00eatre transform\u00e9. Si l'on ne force pas l'ensemble du r\u00e9seau \u00e0 \u00eatre transform\u00e9, la pr\u00e9cision de la synchronisation temporelle des services cl\u00e9s converge vers le niveau de la microseconde ou de la milliseconde, fournissant ainsi une solution d'unification temporelle r\u00e9alisable sur le plan technique pour la gestion du trafic urbain, la grande vitesse intelligente, le transport ferroviaire et la coordination v\u00e9hicule-route.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Cette solution propose une solution unifi\u00e9e de temps et de fr\u00e9quence pour le trafic intelligent, en prenant le serveur d'horloge T830 comme noyau et en construisant une architecture \u00e0 trois couches \"noyau-transmission-acc\u00e8s\". Gr\u00e2ce \u00e0 l'algorithme de s\u00e9lection intelligente des sources de r\u00e9f\u00e9rence multiples et au double moteur PTP\/NTP, il est possible d'obtenir un \u00e9chelonnement du temps d'une pr\u00e9cision de l'ordre de la microseconde \u00e0 la milliseconde. La solution prend en charge de multiples sc\u00e9narios tels que la gestion du trafic urbain, la grande vitesse intelligente, le transit ferroviaire, la coordination v\u00e9hicule-route, etc., et est compatible avec le r\u00e9seau de stock, de mani\u00e8re \u00e0 construire une r\u00e9f\u00e9rence temporelle fiable, technique et unifi\u00e9e pour le syst\u00e8me de trafic intelligent.<\/p>","protected":false},"author":1,"featured_media":16992,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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