The System Designed Of Vehicle Driver Recorder Based On DSP

This article reviewed the development history of vehicle driver record all over of the world, merged the technology of Digital Signal Process and national standard ,designed new VDR which is compatible for area network controller interface, could record the information of switch, analog and impulse on the vehicle driving process, afford lots of necessary data for analyses the automobile driving parameters, the default functional could satisfied the regulator of national standard of vehicle driver recorder.The range of accelerator in vehicle driving process is very important for research automobile driving status , the paper mainly discussed the range of automobile accelerator in the time of normal and accident, could save the value, support the accident judgment liability for administrator. This system added accelerator CAN node which is based on the vehicle CAN network, through related test, this system in the lab condition is steady for dynamitic and static measurement, the range of error is very tiny, could satisfied the related desire.This system regards SEED ELECTRONIC TECHNOLOGY COMPANY'SEED-DEC2812 as development board, planted embedded real-time operation systemμC/OS-Ⅱ,in use of system provided application program interface ,recall the special task function, to accomplish performance,extreamly enhanced system development efficient and system steady, provide extension interface for future expansion, very convenient for system update.