Research On The Fishpond Oxygen Content Surveillance System Based On Multi-node Wireless Communication Technology

China is a country with a large population, is also an agricultural and animal husbandry country. Farming and animal husbandry production is a major event related to the people’s livelihood issues. With the development of science and technology, more and more high technology was used in fishery production. The fish is one of the main sources of supplying man with animal protein. Factory fishery farming, multilayer breeding in fishery farming has become the development direction of future fishery. Compared with the natural fish farming, there is a big fish density in a fish pond which is used the farming methods of factory fishery farming or multilayer breeding. This brought an immediate problem is lack of oxygen in the fish pond, which is the oxygen content in real-time automation systems for ponds proposed practical needs.Remote monitoring and control system has been widely used in the modern days. In the monitoring system, wireless sensor network has become a hot topic discussed by domestic and foreign scholars. With easy network based on wireless communication technology, easy to extend, wireless communication technology has been widely used in the field of industrial control, real-time monitoring system.The real time remote monitoring system of fishpond oxygen designed in this paper, is also based the two technology. The system uses C8051F381as the main control processor of the system, monitoring and controlling of the entire system.A data acquisition and control node is made by the MCU, with the HF-LPA WiFi module. The control node of oxygen content collects the real-time data of oxygen content, which is sent to the PC monitoring program through the HF-LPA WiFi module. Meanwhile, the node also receives control commands sent by the host computer monitoring program, which executes this control command via the control circuit of fishpond aerator. The system designed by intelligent program, is able to handle emergency situations. During the appearance of the emergency situation, the data acquisition and control node can control fishpond aerator automatically to prevent unnecessary losses.In this paper, we design the circuit schematic and PCB board that required by the system, according to the requirement of system function.And finally we test the reliability of the whole system circuit design and data transmission specially, through wireless communication network experiment of the system.