车辆侧翻碰撞检测.pdfVIP

第 22 卷 　第 6 期 传 感 技 术 学 报 Vol . 22 　N o . 6 2009 年 6 月 CHIN ES E J OU RNAL O F S EN SORS AND AC TUA TORS J un . 2009 VehicleUsed Automatic Alarming System Based on MEMS Accelerometer X U Yelei , FA N G Yong ( ) S chool of Com m unicat ion an d I nf orm at ion Eng i neeri ng , S hang hai Uni vers ity , S hang hai 200072 , Chi na Abstract :The sy st em wa s de signed to re scue accident inj ured in time , cap able of identif ying t raffic acci dent s and sending infor mation to Web GIS Mo nitoring cent er . Ba sed on t he 3axi s M EM S accelero met er of high shock survivabilit y , t he vehicle t er minal can det ect t he st at u s of t he vehicle wit h t riaxial synt hetic ac celeration algorit hm and inclination mea surement , and imp rove locating abilit y in t he GP S’blin d spot . The emer gency call can be t riggered eit her auto matically t hrough j udgment by A RM , or manually by p u shin g a but ton . The exp eriment s wit h t he mo del car s p rove t hat t he sy st em can det ect accident s accurat ely wit hout mi sinfor mation bot h in t he ca se of colli sion an d rollover . Key words :auto matic alar min g ; M EM S accelero met er ; colli sion ; rollover EEACC :2575 ;7230 ;7320 E 基于 MEMS 加速度计的车用自动呼救系统 徐叶雷 ,方 　勇 (上海大学通信与信息工程学院 ,上海 200072) 摘 　要 :提出设计一种使车祸伤员得到及时准确救助的自动呼救系统 ,它能够 自动识别车祸并向 Web GIS 监控中心发送事故 信息。该系统的车载终端利用高抗冲击性的三轴 M EMS 加速度计 ,通过三向加速度合成算法和倾角测量对车辆的行驶状态进 行监测 ,能在 GPS 盲区下进行车辆精确定位 。车载终端一旦检测出车祸及类型 ,会由ARM 自动触发求救 ,