摘要
针对公路/铁路边坡危石滚落灾害严重、突发性强、持续时间短等问题,提出了用MPU9250九轴姿态传感器识别危岩危石振动、滚落的方法,该方法具有全天候网络化危石监测、实时性好、低功耗的技术优点。系统采用近距离无线通信技术实现分中心与各监测节点的数据交互,采用2G/3G/4G技术实现分中心数据的远程上报和预警。结果表明,该监测系统能同时监测多个危石,空闲待机状态下电流消耗为9.94μA,远程预警传输时间约为147.71s,基本满足实际应用要求。
In the paper,the method of using MPU9250 nine-axis attitude sensor to identify the vibration and rolling of dangerous rock is proposed,which has the advantages like all-weather network dangerous stone monitoring,good real-time performance and low-power consumption.The system uses short-rang wireless communication technology to realize data interaction between the sub-center and each monitoring node,and uses 2G/3G/4G network to realize remote reporting of data and early warning of rock-falls.The experiment results show that the monitoring system can monitor multiple dangerous stones at the same time.The current consumption of dangerous rock monitoring node in standby mode is no more than 9.94μA,and the long-range early warning average transmission time is 147.71 s,which basically meets the practical application requirements.
作者
刘飞飞
任安虎
张博超
Liu Feifei;Ren Anhu;Zhang Bochao(College of Electronic Information Engineering,Xi’an Technological University,Xi’an 710021,China)
出处
《单片机与嵌入式系统应用》
2018年第12期62-65,73,共5页
Microcontrollers & Embedded Systems
