引入基于Wifi的无线传感器网络到煤矿监测系统,设计并实现了一种基于Wifi的无线传感器网络节点,使用位移传感器对巷道离层、变形进行监测,节点硬件开发基于低功耗Wifi芯片GS1010,软件开发基于μ-velosity的嵌入式操作系统,实现了传感器的数据采集和发送。介绍了节点的软硬件设计,并进行了测试,测试结果表明:节点射频发射功率为9 dbm,节点与无线接入点AP的通信距离可以达到138 m,监测节点可在井下复杂环境中正常工作,且性能稳定。

The wireless sensor network was introduced to the mine monitoring and measuring system based on the Wifi.A wireless sensor network node was desig ned and realized based on the Wifi and the displacement sensor was applied to monitor and measure the mine roadway separation and deformation. The development 0 f the node hardware was based on the low power Wifi chip GS1010 and the software was based on the μ-velosity embedded operation system.Thus the data acquisition and transmission of the sensor could be realized.The paper introduced the software and hardware design of the node.The software and hardware of the node was teste d and measured.The test and measured results showed that the radial transmission power of the node would be 9 dbm, the communication distance between the node and the wireless input point AP would be 138 m and the monitoring and measuring nodes could be in normal operation under the complicated environment with stable p erformances.