基于险情判断的车辆行驶记录仪设计

Rotate-Speed Measurement System for Engine Based on nRF2401

针对目前车辆行驶记录仪存在的存储数据量大,无效数据过多的问题,基于险情判断设计了一种使用ARM处理器的车辆行驶记录仪。该系统在记录过程中对所USB接口摄像机所采集到的视频按时间段截取,并使用方向盘转角数据和制动减速度数据来判断是否有险情发生,挑选保存有险情发生时间段内的视频,从而能减少系统的存储空间并实现对有效数据的挑选,具有良好的应用效果。

Aiming at the large storing space and much date was worthless for vehicle running state logging system; this paper designed a vehicle running state log system based on the judge of danger. This system used USB interface camera to capture the images around the vehicle ,and capture the steering and decelerate to judge the appearance of danger conditions. The data which contains of danger was stored for ever, so this can reduced the storing space and it had good applying effect.