汽車性能通用數(shù)據(jù)采集系統(tǒng)的設(shè)計與實現(xiàn)
[Abstract]:With the development of automobile industry, the number of cars increases rapidly, and a large number will bring serious environmental pollution and frequent traffic accidents. In order to reduce pollution and reduce accidents, it is more important to maintain the excellent performance of the car besides raising the awareness of the people on the one hand. Therefore, it is necessary to develop and design the vehicle performance detection device to discover the unsafe factors of the vehicle and to restore the excellent performance of the vehicle in time. However, in the past, the performance of the vehicle testing devices, are dedicated. In other words, it is developed for specific detection objects, and the application range is very narrow. For different vehicle signals, different acquisition circuits need to be designed, which is time-consuming and laborious. Therefore, this paper studies and designs a general purpose vehicle performance testing system. This paper adopts the method of SEP4020,FPGA joint control, uses FPGA to control high speed AD, and uses SEP4020 as processor. Give full play to the timing advantage of FPGA and the data processing advantage of SEP4020. In addition, a simple USB Host controller is built inside FPGA for data transmission between high speed AD and processor. The data display terminal uses 7-inch TFT LCD screen, and the data storage medium uses SD card. SD card has large memory capacity, fast data transmission rate and high mobility, thus making data carrying more convenient and data storage time longer. The system is tested and verified on the wheel balancing instrument, and the accuracy of the system error is up to 1.5-3. This completely achieves the precision of the special collection module and meets the practical application requirements.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:TP311.52;TP274.2
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