摘要：AbstractFor the application of drinking water safety monitoring, a sensor node and a gateway node which were suitable for setting up a Wireless Sensor Network (WSN) in water supply area were developed. The sensor node used an STM32F103 as the processing core, an A7139 RF chip and its peripheral circuits as the wireless communication module, and 4 ASI water quality electrodes including dissolved oxygen (DO), hydrogen ion exponent (pH), ammonia nitrogen and temperature as the sensing module. The gateway node used a GPRS module to upload network data to the server. A flooding routing protocol was designed for increasing the reliability of data transmission between sensor nodes. The results of the 100 days networking experiment indicated that the average PLR of network was 3.55%, which could meet the requirements for stable transmission of network data. In conclusion, the design of sensor node and GPRS gateway is suitable for effective monitoring of water quality of drinking water supply area.
关键词：KeywordsWSNwater pollutionrural drinking water safetyinformation acquisitionflooding routing protocolsensor node
