本文關(guān)鍵詞：基于CAN總線的車輛在線診斷的研究與應(yīng)用　出處：《華東師范大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 車輛診斷 CAN總線 OBD UDS 載荷計(jì)算 雨流計(jì)數(shù)

【摘要】：隨著近20多年來電子信息技術(shù)以及汽車制造業(yè)的不斷發(fā)展,汽車電子技術(shù)也在不斷地提升著,人們對于汽車的安全性,舒適性以及娛樂性的需求也在不斷地增長著。在多種汽車電子技術(shù)的研發(fā)中,車輛診斷的研究和使用越來越被大家關(guān)注,基于CAN總線的診斷成為了其中的熱點(diǎn),通過汽車的CAN總線可以對車輛進(jìn)行多方面的診斷,不僅可以了解車輛的故障以及狀態(tài)信息,同時還能夠獲取車輛各個零部件的使用狀態(tài)信息�；诋�(dāng)前主流的車輛診斷方式,本文通過具體的協(xié)議實(shí)現(xiàn)以及實(shí)驗(yàn)分析來進(jìn)行車輛診斷的研究,并且通過對應(yīng)的實(shí)例來說明基于OBD的車輛診斷與基于UDS的車輛診斷的診斷方式和內(nèi)容以及它們之間的區(qū)別。本文的主要貢獻(xiàn)如下:1.描述了基于OBD協(xié)議的車輛診斷系統(tǒng)的設(shè)計(jì)和實(shí)現(xiàn)。通過對OBD協(xié)議的介紹以及通信機(jī)制的描述,從而引出基于OBD的車輛診斷的設(shè)計(jì)方法,并通過實(shí)際的采集設(shè)備以及云端的設(shè)計(jì)和具體實(shí)驗(yàn)來驗(yàn)證其可行性。2.介紹了 UDS協(xié)議的通信機(jī)制,實(shí)現(xiàn)車輛發(fā)動機(jī)診斷中的雨流計(jì)數(shù)法和載荷計(jì)算。主要說明了如何通過相關(guān)UDS協(xié)議采集車輛發(fā)動機(jī)相關(guān)數(shù)據(jù)并對之進(jìn)行雨流計(jì)數(shù)處理。同時通過載荷計(jì)算來描述多個發(fā)動機(jī)參數(shù)(如應(yīng)力數(shù)據(jù),噴油相關(guān)數(shù)據(jù),引擎轉(zhuǎn)速等)之間的關(guān)系。最終綜合這兩種計(jì)數(shù)方法來對車輛發(fā)動機(jī)進(jìn)行診斷和分析。3.利用現(xiàn)有的軟件和硬件條件,建立基于CAN總線的車輛診斷的實(shí)驗(yàn)環(huán)境。通過實(shí)驗(yàn)和實(shí)車測試來驗(yàn)證總線通信的可行性,在診斷設(shè)備上實(shí)現(xiàn)OBD以及UDS數(shù)據(jù)的采集和運(yùn)算,通過云端對數(shù)據(jù)進(jìn)行接收,存儲和處理操作,從而實(shí)現(xiàn)在線診斷的功能。實(shí)驗(yàn)結(jié)果表明,本文提出的基于CAN總線的車輛診斷的方法,能夠通過計(jì)算和處理獲取到車輛的狀態(tài)信息以及故障信息,并且還能夠?qū)ζ嚢l(fā)動機(jī)的使用情況進(jìn)行診斷和分析。
[Abstract]:With the continuous development of nearly 20 years of electronic information technology and automobile manufacturing industry, automobile electronic technology is constantly improving, people for automobile safety, comfort and entertainment needs are constantly increasing. In the development of various automotive electronic technology, vehicle diagnostic research and use more and more we have been concerned about the diagnosis, based on the CAN bus has become one of the hot spots, through the CAN bus of the vehicle can be diagnosed in many aspects of the vehicle, the vehicle can not only understand the fault and state information, the use of state information also can get all the parts of the vehicle. The vehicle diagnostic method based on the current mainstream, through specific research protocol implementation and experimental analysis of vehicle diagnosis, and to illustrate the vehicle diagnosis based on OBD and UDS in the diagnosis of the diagnosis based on the vehicle through the corresponding examples The distinction between form and content as well as their. The main contributions of this paper are as follows: 1. describes the design and implementation of vehicle diagnosis system based on OBD protocol. Based on the OBD protocol and communication mechanism is described, which leads to the design method of vehicle diagnosis based on OBD, and through the actual acquisition equipment and cloud design and the specific experiment to verify the feasibility of.2. introduces the communication mechanism of UDS protocol, the rain flow counting method and load calculation of the vehicle engine diagnosis. Mainly illustrates how the relevant data and the rain flow counting processing through UDS protocol. At the same time through the acquisition of vehicle engine load calculation to describe the multiple engine parameters (e.g. stress data, injection related data, engine speed etc.). The relationship between the ultimate combination of the two counting method for vehicle engine diagnosis and analysis using.3. The existing software and hardware conditions, establish the experimental environment of vehicle diagnosis based on CAN bus. Through the experiment and real vehicle test to verify the feasibility of bus communication, realize OBD and UDS data collection and operation in diagnostic equipment, through the cloud of data receiving, storage and processing operations, so as to realize the online diagnosis function. The experimental results show that the diagnosis method of vehicle based on CAN bus is proposed in this paper, to get to the vehicle status information and fault information through calculation and processing, and also be able to use the car engine condition for diagnosis and analysis.

【學(xué)位授予單位】：華東師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：U472.9;TP277

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