Abstract
The water quality monitoring plays an important role in water contamination surveillance and guides the water resource protection for safe and clean water. A flexible automated real-time water quality monitoring and alarm system based on the wireless sensor network(WSN) is proposed. The WSN is built in accordance with Zigbee communication protocol, which consists of the sensor nodes, route nodes and coordinator node. The sensor nodes based on cheap and efficient sensors (pH electrode, dissolved oxygen electrode, temperature senor) and wireless transreceiver collect the environmental data and transmit to the coordinator node via the route nodes. The data are sent to the remote monitoring center with the help of GPRS. The time synchronous algorithm is adopted to wake up all the nodes in the network to improve the stability and reliability of the communication. The long-time measurement results verify the real time and accuracy in data acquisition and stability and reliability in communication. The system meets the requirements of water quality monitoring, and has great practical value.
Highlights
Water is one of the most critical resources for human well-being and vital for industry and agriculture
The route node locating between the sensor nodes and the coordinator node is responsible for data collection and forwarding
A low-cost real-time water quality monitoring system based on the wireless sensor network is proposed in the paper
Summary
Water is one of the most critical resources for human well-being and vital for industry and agriculture. Remote, real-time and lowcost water quality monitoring system without visiting to the water location frequently is required. It is easy for WSN to achieve the rapid and flexible deployment in a variety of environments It empowers us for continuous monitoring of water quality. ZigBee is a kind of low-complexity, low-power dissipation, low-data rate and low-cost wireless network technology. It can accommodate 64000 sensor nodes to communicate mutually. An automated low-cost remote water quality monitoring system based on the wireless sensor network is presented in the paper to collect and upload the environmental data. The data are analyzed in the monitoring center for the dynamic water environment change that is helpful to control the water quality in time.
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