【摘要】：隨著電子技術(shù)的迅速發(fā)展,總線技術(shù)的不斷擴充,嵌入式系統(tǒng)中的總線呈現(xiàn)出類型增多,傳輸速度增快,傳輸數(shù)據(jù)量增大等特點,且同一系統(tǒng)中出現(xiàn)多種類型總線共同工作的情況變得越來越常見。系統(tǒng)的復(fù)雜度越來越高,使得系統(tǒng)研發(fā)中對總線數(shù)據(jù)的記錄分析成了必不可少的步驟。做好系統(tǒng)總線數(shù)據(jù)的記錄分析,對系統(tǒng)調(diào)試、故障診斷、故障定位、縮短維修時間等具有重要意義�？偩�數(shù)據(jù)的復(fù)雜性,加之系統(tǒng)運行時故障的不定性,使得系統(tǒng)中同一故障的出現(xiàn)頻率降低,如果等這些故障重現(xiàn),可能需要較長的時間,這樣勢必增加了故障排除的時間。如果用數(shù)據(jù)記錄儀替代出現(xiàn)故障的節(jié)點,將已記錄數(shù)據(jù)回放到系統(tǒng)中,可增大同一故障出現(xiàn)的幾率,實現(xiàn)故障的快速定位,縮短系統(tǒng)的開發(fā)周期。因此,解決已記錄數(shù)據(jù)的回放也是總線數(shù)據(jù)記錄系統(tǒng)的一個關(guān)鍵技術(shù)。論文針對總線數(shù)據(jù)的記錄與回放,研究設(shè)計了一種多處理器并行采集存儲多總線數(shù)據(jù)的數(shù)據(jù)記錄與回放系統(tǒng),該系統(tǒng)支持RS485總線、CAN總線和以太網(wǎng)總線的單獨記錄或組合記錄,解決了當前總線數(shù)據(jù)記錄系統(tǒng)因為速度慢造成的丟幀等問題,尤其針對多總線數(shù)據(jù)記錄,提高了數(shù)據(jù)記錄系統(tǒng)的整體速度。論文提出的多總線數(shù)據(jù)記錄與回放系統(tǒng)的設(shè)計方案,具有容量擴展簡單,成本低,開發(fā)周期短,可靠性高等特點,為多總線系統(tǒng)數(shù)據(jù)記錄提供了一種新思路。
[Abstract]:With the rapid development of electronic technology and the continuous expansion of bus technology, the bus in embedded system presents the characteristics of increasing types, increasing transmission speed, increasing data volume, etc. And it is becoming more and more common that multiple types of buses work together in the same system. The complexity of the system is becoming more and more high, which makes the recording and analysis of bus data become an essential step in system research and development. It is of great significance for system debugging, fault diagnosis, fault location and shortening maintenance time to record and analyze the system bus data. The complexity of bus data, coupled with the uncertainty of the system running fault, reduces the frequency of the same fault in the system. If these faults recur, it may take a long time, which is bound to increase the time of troubleshooting. If the node with fault is replaced by data recorder, the recorded data can be played back into the system, the probability of the same fault can be increased, the fault can be located quickly, and the development period of the system can be shortened. Therefore, to resolve the playback of recorded data is also a key technology of bus data recording system. Aiming at the recording and playback of bus data, a multi-processor data recording and playback system for parallel acquisition and storage of multi-bus data is designed in this paper. The system supports RS485 bus, CAN bus and Ethernet bus recording or combination recording separately. The problem of losing frames caused by the slow speed of the current bus data recording system is solved, especially for the multi-bus data recording, and the overall speed of the data recording system is improved. The design scheme of multi-bus data recording and playback system presented in this paper has the characteristics of simple capacity expansion, low cost, short development period and high reliability. It provides a new way for data recording in multi-bus system.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP274;TP273;TP311.52

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