| China is a traditional country of agricultural, which its modern agriculture technology is in a fast developing mode. This makes China in need of modern technology to equip and rebuild its traditional agriculture infrastructure. Corps’ growing is affected by many factors, and soil condition is the fundamental factor of corps’ growing. On the basis of the condition that domestic and foreign agriculture soil monitoring system is deeply analysed and researched, and the soil characteristic in JiangSu province. This paper presents a large area farmland soil remote monitoring system based on wireless sensor network and Internet technology. The main contents are as follows:(1) Measurement methods and principles are descripted, including soil temperature, moisture, PH value, conductivity, air temperature and humidity. Select the appropriate sensor and design the adjusting and amplifying circuit. Design and optimize CC2530 node board. Research on solar panel and storage battery. And design a solar charge and discharge control circuit and power conditioning regulator circuit, to provide stable power for every node in the circuit.(2) The program for data acquisition, processing, transmission and receiving are compiled based on Z-stack. Establish ZigBee network between farmland nodes and through GPRS remote transmission. Make this design able to apply to large areas of farmland and remote areas. Mapping the data transmitted to the pointed domain through GPRS to the monitoring center computers. With TCP transfer virtual serial port technology, to transmit the TCP data to the virtual serial port and improve its versatility.(3) The PC monitoring center software is designed by LabVIEW that includes parameter settings, data storage, alarm system and real-time display function. Present the data on web page through Web publishing and domain analysis technology. And make users able to access through computers, smart phones and tablets. Realize a truly multi-terminal remote monitoring system.(4) The test result shows that in this page, the integration of wireless sensor network, mobile communication network and Internet can be used in large areas of farmland environment monitoring system. Satisfied the modern agriculture monitoring needs. The monitoring center can acquire data of soil temperature, humidity, pH value, soil conductivity in soil environment and air temperature, air humidity in air environment wirelessly, and display in a real time. Users can remotely access the data through computers can mobile devices. The whole system is easy to use, friendly interface, stable, versatile and have a great value of promoting and application. |
