【摘要】 介绍汽车行驶记录仪的CAN总线控制网络系统的设计。设计了以AT89C51、SJA1000为核心的CAN总线信号节点,以80C196KC、SJA1000为核心的CAN总线控制节点。信号节点采集数据,控制节点存储数据,存储汽车最近行驶20s的实时数据,并累计存储最近行驶360h的历史数据,如果超速或疲劳驾驶,蜂鸣器自动报警,上位机通过CAN总线在线设置参数,适用不同型号的汽车。通过一长途客车的实验,满足相关法规的要求。更多还原

【Abstract】 The article introduces the design of CAN bus control network for Automobile travelling data recorder.The signal node of CAN bus which consists of AT89C51 and SJA1000 as the core and the control node of CAN bus which consists of 80C196KC and SJA1000 are designed.The data are saved by the controller node after being collected by the signal node.The real time data for the last 20 seconds that the automobile is on accident are stored.The historical data for the last 360 hours are stored accumulatively.The buzzer may automatically alarm if the speed or the driving time at work exceeds the set value.The position machine can set up the parameter on-line by CAN Bus.It adapts to different models of automobile.The design meets the requirements of related law and regulation after testing on a long-distance bus.更多还原