Design Of Zha Long Wetland Water Environment Monitoring System Based On WSN

With the progress and development of society, the methods and people’s awareness of protection of the Earth environment are gradually improving. A wetland ecosystem is one of the important manifestations for evaluating the Earth ecological environment. In northern China, Zhalong Nature Reserve, as one of the key protected wetlands in China or even in the world, is essential to be monitored by modern technology. Currently wetlands environmental monitoring technology is broadly divided into Manual sampling monitoring, satellite remote sensing monitoring, establish a base station monitoring and wireless sensor technology to monitor, etc. Wireless sensor network technology is an emerging development in environmental monitoring, which has the advantages of lower cost, lower power consumption, convenient deployment, real-time remote monitoring and so on, comparing with the former means.In the view of Zhalong wetland water environment monitoring requirements, this paper designs the Zhalong Nature Protection Area’s water environment monitoring system based on wireless sensor network that can be divided into: data acquisition, GPRS data sending and PC data display. Sensors are used pH electrode, conductivity electrode, the temperature sensor and water sensor light transmittance. The scheme design of Hardware adopts CC2530 wireless module combined with the CC2591 power amplifier module as the terminal acquisition node, software based on Z-Stack protocol stack building a self-organizing network, data eventually converging to the coordinator that consist of CC2530 and ARM, then to establish a communication link with remote PC client via the GPRS and access the Internet.Paper from the perspective of hardware and software design of the system respectively gives the detailed design. The hardware design mainly includes: terminal acquisition nodes, gateway coordinator node and sensor conditioning circuit design. Software design mainly includes: the transplantation and parsing of Z-Stack protocol stack, terminal acquisition node software design, the gateway coordinator node software design, Linux transplantation and tailoring and task communication, SIM5218/GPRS module communication task programming and computer programming.Finally, the design system is carried out in the laboratory and field, to evaluate the robustness and life cycle by testing the network packet loss rate, delay and transmission frame length. On the other hand, to compare the data from the sensor nodes with standard test instrument and analysis the acquisition accuracy of various parameters such as pH, conductivity, temperature. The results from the analysis of the data shows that the designed system can cope with the Zhalong Nature Protection Area wetland’s water environment monitoring mission, the future can be widely used to monitor other wetland environment, and compared to the traditional means of monitoring system with lower cost, convenient deployment, easy maintenance, and staff can achieve real-time remote monitoring tasks and other advantages.