In order to improve driving safety performance of vehicles, design a rollover accident alarm system based on Atmega16 microcontroller processing unit. System uses XW02 - 1S2422-axis angle sensor measure vehicle tipping angle of horizontal and vertical, according to set limits by tipping, implement monitoring and early warning function, And use of sound and light information prompted the motorman.When the vehicle overturned in an accident, use of GPS precise positioning at the scene, through the GSM send a short message to the specified mobile phone, in order to timely rescue. Tests show that the system can achieve rollover accident alarm function, accuracy rate of 95％.%为了提高车辆的安全驾驶性能,对车辆的横向与纵向倾翻事故进行研究,以Atmegal6单片机为处理单元设计了一倾翻事故报警系统;系统采用XW02-1S2422双轴角度传感器实时测量车辆的横向和纵向倾翻角度,根据设定的倾翻极限角度实现车辆的倾翻状态的监控与预警功能,并利用声光信息提示司机;当车辆发生翻车事故时,利用GPS准确定位事故现场,通过GSM将定位结果以短消息的方式发送到指定手机,以便于及时救援;大量试验表明,系统可以实现对倾翻事故的报警功能,准确率达到95%.
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