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设计了基于Zigbee无线传感器网络的煤矿监测系统。利用Zigbee无线技术、传感器技术实现井下无线通信和环境参数采集,并通过CAN总线将数据传输到井上监测中心,完成井下监测系统的总体设计。探讨了针对井下环境的RSSI测距模型,结合改进的三边测量法来实现井下人员定位,针对以上算法存在的误差,提出了加权质心和差分修正来提高定位准确度。
Design a coal mine monitoring system based on Zigbee wireless sensor network. The use of Zigbee wireless technology, sensor technology to achieve underground wireless communications and environmental parameters collected by the CAN bus to the data transmission monitoring center upwell to complete the overall design of the underground monitoring system. The RSSI ranging model for the downhole environment is discussed. Combined with the improved trilateration method to locate the downhole personnel, aiming at the errors of the above algorithms, weighted centroid and differential correction are proposed to improve the positioning accuracy.