多参数桥梁振动监测系统设计

摘要

According the requirement of bridge vibration detecting, this paper designed the alternate current bias circuit and two AD7714 chips to achieve the high accuracy vibrating acceleration measurement. Furthermore, this system completed the measurement of temperature, humidity, and wind speed and wind direction. Constructed the CAN bus network used low power consumption portable computer platform, and send the bridge's status information to Surveillance center by GPRS network, finally realized the system of multiparameter monitoring towards multi-bridges.%针对远程桥梁振动监测的要求,采用交流偏置电路与双路AD7714模数转换器实现ADXL203的双轴高精度同步振动加速度测量,并实现了温湿度与风速风向测量.使用低功耗便携式计算平台构建CAN总线监测网络,通过GPRS网络将桥梁状态信息发送到监控中心,实现远程多桥梁多参数监测系统.