本文選題：CAN總線 + 數(shù)據(jù)記錄儀��； 參考：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：CAN總線是一種支持分布式實(shí)時控制系統(tǒng)的串行通信局域網(wǎng)絡(luò)，由于其具有高性能、高可靠性和實(shí)時性好的特點(diǎn)，近年來許多新興車載平臺都選用了CAN總線網(wǎng)絡(luò)相關(guān)的控制設(shè)備，解決了以往單個布置、集中控制應(yīng)用中存在的問題。但由于沒有采用總線數(shù)據(jù)記錄技術(shù)，一旦在工作中出現(xiàn)故障或問題，就難以快速地準(zhǔn)確定位。本文為填補(bǔ)目前軍用車載平臺車控系統(tǒng)領(lǐng)域數(shù)據(jù)記錄技術(shù)的空白，進(jìn)行了基于CAN總線車載平臺總線數(shù)據(jù)記錄技術(shù)的研究工作。 本文按照車載平臺車控系統(tǒng)數(shù)據(jù)的實(shí)時性、完整性和可還原性等要求，提出了基于CAN總線車載平臺數(shù)據(jù)記錄儀的設(shè)計方案。論文重點(diǎn)圍繞應(yīng)急電源和數(shù)據(jù)存儲兩個方面進(jìn)行了系統(tǒng)研究，一方面，，研究設(shè)計了基于超級電容的斷電應(yīng)急電源方案，確保車載平臺在突然斷電的情況下及時將當(dāng)前數(shù)據(jù)準(zhǔn)確、完整地記錄；另一方面，為了解決存儲數(shù)據(jù)量大，存儲器容量空間有限的問題，針對車載平臺車控系統(tǒng)的數(shù)據(jù)特點(diǎn)，制定了數(shù)據(jù)過濾的基本原則和方法，對比分析了目前常用的壓縮算法，在選定Huffman壓縮算法的基礎(chǔ)上提出了改進(jìn)措施，并采取備份存儲的方式將數(shù)據(jù)同時存入三片鐵電存儲器中，提高其存儲可靠性。最后采用CANoe進(jìn)行車載平臺車控系統(tǒng)總體數(shù)據(jù)傳送內(nèi)容的模擬，并借助Labview平臺對論文研究的數(shù)據(jù)記錄技術(shù)進(jìn)行了測試。 驗(yàn)證結(jié)果表明，在正常供電的情況下，數(shù)據(jù)記錄儀可以準(zhǔn)確記錄CAN總線數(shù)據(jù)；在系統(tǒng)掉電時，數(shù)據(jù)記錄儀使用應(yīng)急電源可以完成當(dāng)前數(shù)據(jù)的完整記錄，為追溯事件、還原事故現(xiàn)場提供有利依據(jù)。
[Abstract]:Can bus is a kind of serial communication local area network which supports distributed real-time control system. Because of its high performance, high reliability and good real-time performance, many new vehicle platforms have used can bus network related control equipment in recent years. The problems existed in the application of single arrangement and centralized control are solved. However, due to the lack of bus data recording technology, it is difficult to locate accurately and quickly once there are faults or problems in work. In order to fill in the blank of data recording technology in the field of vehicle control system of military vehicle platform, the research work of data recording technology based on can bus is carried out in this paper. According to the requirements of real-time, integrality and reducibility of vehicular platform data, this paper puts forward a design scheme of vehicle platform data recorder based on can bus. The thesis focuses on two aspects: emergency power supply and data storage. On the one hand, the scheme of emergency power supply based on super capacitor is designed to ensure that the on-board platform can make the current data accurate in time in case of sudden power outage. On the other hand, in order to solve the problem of large amount of storage data and limited storage space, the basic principles and methods of data filtering are established according to the data characteristics of vehicle control system on vehicle platform. This paper compares and analyzes the compression algorithms commonly used at present, and puts forward some improvement measures based on the selection of Huffman compression algorithm, and stores the data in three ferroelectric memory simultaneously by backup storage to improve the storage reliability. Finally, CANoe is used to simulate the overall data transfer content of vehicle control system on vehicle platform, and the data recording technology studied in this paper is tested by LabVIEW platform. The verification results show that the data recorder can record the can bus data accurately under the normal power supply condition, and when the system is power down, the data recorder can complete the complete recording of the current data by using the emergency power supply. The site of the reduction accident provides favorable basis.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.1;TP273

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