Design of In-vehicle Safety Drive Acquisition Doard Based on FlexRay Bus
In order to solve the problems of low security and reliability and slow transmission rate of the existing train on-board drive acquisition board,an in-vehicle safety drive acquisition board based on FlexRay bus was designed.The board adopted two-by-two take-two architecture,the control core consisted of two independent CPUs,mainly including communication module,driver module,acquisition module and dual-core control module,using optocoupler and relay to achieve drive and acquisition functions.Tests show that the board is able to stably collect external relay status information as well as drive external relays,and send and receive safety data through the FlexRay bus.Compared with the traditional driver-acquisition board,the safety,reliability and transmission rate of this board are effectively improved.
万方数据
维普
