基于NTP協(xié)議的車聯(lián)網(wǎng)高精度時(shí)間同步系統(tǒng)解決方案探索
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摘要:以國(guó)家智能網(wǎng)聯(lián)汽車(武漢)測(cè)試示范區(qū)二期項(xiàng)目車聯(lián)網(wǎng)時(shí)間同步系統(tǒng)建設(shè)經(jīng)驗(yàn)為基礎(chǔ),系統(tǒng)進(jìn)行了車端、路端、平臺(tái)端的時(shí)間同步精度測(cè)試研究,并基于測(cè)量結(jié)果修訂了時(shí)間同步系統(tǒng)方案,同時(shí)總結(jié)并提出了一套更高同步精度、更低成本、更易應(yīng)用的時(shí)間同步系統(tǒng)方案。
關(guān)鍵詞:時(shí)間同步;NTP;GNSS;車聯(lián)網(wǎng);時(shí)間精度
doi:10.3969/J.ISSN.1672-7274.2022.01.005
中圖分類號(hào):TP 212;U 495 文獻(xiàn)標(biāo)示碼:A 文章編碼:1672-7274(2022)01-0013-04
Solution Exploration of High Precision Time Synchronization System of Internet of Vehicles Based on NTP Protocol
WEI Yang, HANG Hui, XU Hong
(Chebai Intelligent Network Research Institute (Wuhan) Co., Ltd., Wuhan 430000, China)
Abstract: Based on the construction experience of vehicle networking time synchronization system of phase II project of national intelligent networked vehicle (Wuhan) test demonstration zone, this paper systematically tests and studies the time synchronization accuracy of vehicle end, road end and platform end, revises the time synchronization system scheme based on the measurement results, and summarizes and puts forward a set of time synchronization system with higher synchronization accuracy, lower cost More applicable time synchronization system scheme.
Key words: time synchronization; NTP; GNSS; vehicle networking; time accuracy
1 背景及意義
時(shí)間同步是指以中心控制系統(tǒng)的標(biāo)準(zhǔn)時(shí)鐘作為基準(zhǔn)使各分布系統(tǒng)和終端設(shè)備的時(shí)鐘與中心控制系統(tǒng)時(shí)鐘進(jìn)行同步的過(guò)程。(剩余3768字)