门槛阈值自匹配的车载呼救系统设计  

Design of Automatic Crash Notification System Terminal Based on Selfmatching Discriminatton Threshold

作　　者：陆颖[1] 李彬 张玉辰 季小洁 LU Ying;LI Bin;ZHANG Yu-chen;JI Xiao-jie(College of Automobile and Transportation Engineering,Jiangsu University,Jiangsu Zhenjiang 212013,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《机械设计与制造》2024年第4期17-22,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金(51605197);江苏省自然科学基金(BK20160524);镇江市重点研发计划(SH2019054)。

摘　　要：为了提高车辆碰撞自动呼救系统(Automatic Crash Notification System,ACNS)的抗干扰能力和事故信息的准确性,提出了一种具有自适应门槛阈值的ACNS触发算法。基于门槛阈值与路面国际平整度指数之间的关联模型,设计ACNS触发算法,并实现ACNS门槛阈值随路面状况和车速的动态匹配;基于STM32F103ZET6微控制器,利用加速度信号采集模块、定位模块和通信模块等模块设计一种车辆事故自动呼救系统终端;利用道路实车试验和触发测试试验测试系统性能;结果表明:ACNS终端能够实现门槛阈值根据不同路面状况的动态匹配,并对相关信息进行实时处理及发送呼救信息。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.

关 键 词：车辆事故自动呼救系统 加速度信号 动态门槛阈值 触发算法 

分 类 号：TH16[机械工程—机械制造及自动化] U461.91[机械工程—车辆工程]