基于加速度传感器的建筑工地广域无线防盗系统

Wireless Burglary-Resisting System of a Wide Area for the Construction Site Based on Accelerometer

针对目前建筑工地上存在的建筑材料及机械设备频繁被盗事件,论文提出利用加速度传感器对各物体的振动进行监测,通过分析加速度信号的标准差对偷盗事件作出判断;结合Zigbee无线传感器网络和GPRS构建了以移动手持终端、本地和远程两级控制中心组成的广域无线分簇式监测网络。论文给出了详细的系统结构和软硬件设计。实验表明,系统可有效排除偶然扰动和周期扰动,无线网络传输稳定,准确性高。系统稍加改进即可应用于其他广域防盗监测环境中。

A burglary-resisting method for building materials and mechanical equipments on the construction site is proposed. An accelerometer detects the acceleration of an object,and a controller analyzes the standard deviation of this acceleration to determine whether a theft event is present. A theft prevention system for multi-object and a wide area is developed by using Zigbee wireless sensor network and GPRS,which is composed of a mobile handheld device,local and remote control centers. The design of hardware and software for the developed system is described in detail. The experimental results show that the designed system can find out a theft event excluding the effects of accidental and periodic disturbance effectively,and the wireless network in data transferring is stable and accurate. This system can easily extend to other application scenario by a slight modification.