汽车性能通用数据采集系统的设计与实现

发布时间：2018-12-17 04:32

【摘要】：汽车工业的发展使得汽车的数量急剧增长,庞大的数量会带来严重的环境污染和频繁的交通事故。为了降低污染较少事故,除了一方面提高人的意识外,更重要的是保持汽车优良的性能。因此必须开发设计汽车性能检测装置,及时发现汽车的不安全因素并恢复汽车的优良性能。然而,以往汽车性能检测装置,都是专用的。也就是说,是针对特定的检测对象所开发出来的,应用范围很窄,对于不同的车辆信号,需要设计不同的采集电路,既耗时又费力。因此本文研究设计了通用型汽车性能检测系统。本文采用SEP4020、FPGA联合控制的方法,用FPGA控制高速AD,以SEP4020作处理器。充分发挥FPGA的时序优势和SEP4020的数据处理优势。另外,在FPGA内部构建简易USB Host控制器,用作高速AD和处理器之间的数据传输。数据显示终端采用7寸TFT液晶屏,数据存储介质采用SD卡。SD卡记忆容量大、数据传输速率快、移动灵活性极高,从而使数据携带更便捷,数据存储时间更长。系统在车轮动平衡仪上进行测试验证,确定了系统误差精度可达1.5%-3%。这完全达到专用采集模块的精度,满足实际的应用需求。
[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.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP311.52;TP274.2

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