Design Of Monitoring System For Agricultural Greenhouse Based On CAN Bus And Wireless Technology

Agriculture plays a very important role in the modernization of our country, but China's agricultural modernization progress is relatively slow. Few people use new greenhouse temperature and humidity monitoring system because of the cost of installation is relatively high and maintenance is difficult. On the other hand, with the rapid development of large agricultural shed, there is an urgent need for intelligent greenhouse technology. The technology can improve the information management level of the existing greenhouse, save labor costs, scientific guidance of agricultural production.According to the characteristics of agricultural greenhouse production, combined with CAN bus and wireless sensor networks technology, using advanced embedded processor and sensor, this paper designed a kind of agricultural greenhouse temperature,humidity and light monitoring and control system. It alarm automatically according to the field condition, and transmit the monitoring results to the host computer for analysis and display. The main contents of this paper include:(1) According to the demand of agricultural production, a system architecture of CAN bus and wireless is proposed, and a design scheme of remote control for agricultural production is presented.(2) The design of the hardware circuit of the greenhouse monitoring system is realized, the data acquisition module, wireless sensor node module, CAN bus module, display module and other parts of the composition of the principle and implementation methods are described, the hardware circuit schematic and PCB system board are completed.(3) Deep analysis and research on the software design of the system, data acquisition module, wireless sensor node module and host computer program are realized.(4) According to overall design requirements of the system, the prototype of greenhouse monitoring system based on CAN bus and wireless technology is developed, the whole test is carried out, and the test results are given.Practical application results show that greenhouse monitoring system based on CAN bus and wireless technology can realize real-time and reliable communication function, analysis and process monitoring data according to actual situation of the field, realize the remote real-time monitoring of temperature and humidity in Greenhouse, It also realized the automation and intelligence of agricultural production and have high application value.