Design on Hydraulic Support Pressure Monitoring System Based on Wireless Sensor Network

According to the defects of cable easily snapped and poor scalability for hydraulic support pressure monitoring, a new system that combines wireless se nsor network ( WSN) with monitoring system was proposed, which could track the reliable and real- time pressure information in mines and had the advantages of low p ower, reliable performance and high efficiency. According to when AODV routing protocol choose routing by the minimum hops quantity, existing the problem of packet | oss serious caused by unstabitily link. The system made the Received Signal Strength Indicator ( RSSI) as the routing metric and proposed RSSI- AODV routing protoc ol to route. In the network simulation, the packet loss rate of RSSI- AODV in 5 hops remained at 3%, and the average end- to- end delay for RSSI- AODV was twice as much as the AODV routing protocol when the packet size was 800 B. So it was suitable for the mining communication. In addition, combining the mining monitoring soft ware with WSN, it was convenient to check the hydraulic support monitoring information.