Aimed at the monitoring requirements of wireless hydrological monitoring system as well as the hydrological monitoring network needs,the development status of hydrological monitoring system was analyzed,and application of Wireless Sensor Networks(WSN) to this system is proposed.The structure of hydrological monitoring system based on ZigBee and GPRS WSN,and topology of the ZigBee WSN for hydrological monitoring were presented.The method integrating singlechip and ARM microprocessor with CC2500 was applied in hardware design of network nodes,forming the software deve-lopment platform with transplanting the embedded operating system of TinyOS.The protocol stack of ZigBee was applied in software design of system.According to the test results,ZigBee network satisfies the communication distance demand of hydrological monitor,has high reliability and expandability,facilitates the realization of hydrological monitoring network,and provides a solution to realize the wireless hydrolo-gical monitor by combining the superiority of GPRS technology.
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