Design of Automatic Crash Notification System Terminal Based on Selfmatching Discriminatton Threshold
In order to improve the anti-interference performance and accuracy of accident information of Automatic Crash Notifi-cation System(ACNS),a trigger algorithm of ACNS with adaptive discrimination threshold is proposed.The ACNS trigger algo-rithm is designed based on the correlation model of discrimination threshold and International Roughness Index.The discrimina-tion threshold of ACNS is matched with road condition and speed dynamically.Based on the STM32F103ZET6 microcontroller,an ACNS terminal is designed by using acceleration signal acquisition module,positioning module and communication module.The performance of ACNS is tested by conducting road vehicle test and trigger test.The results show that the ACNS terminal can realize the dynamic matching of the threshold value according to different road conditions,process the relevant information in real time and send the call for help.
NETL
NSTL
万方数据
维普
