Key Technology Research Of Soil Information Acquisition System Based On GPRS

Real-time, effective soil parameters access to digital agricultural is an important foundation. Network communication technology, GPRS technology to detect soil parameters, provides a means of wireless remote transmission. This paper analyzes the domestic and international status about the detection of soil parameters and existing problems ,on the basis of which ,combined with modern advanced control and communications technology, research the soil information system based on GPRS and MCU technology.The main work and conclusions are as follows:(1)Based on the analysis of demand, designed the whole scheme and function of the monitoring system. System used the GPRS network for wireless transmission of soil information, use the microcontroller as the central controller, selected temperature and humidity sensor would used. used AT89S52 microcontroller with small size, low power, low cost, high performance, speed, etcAdvantages. The System using GPRS network is to achieve wireless transmission of soil information, using the microcontroller as the central controller, operators through the host computer to the Internet network can browse the soil-related cases remotely.(2)The main idea is to design single chip by sending AT commands control the GPRS module to establish wireless channel, complete the data transfer. So the main task of MCU as lower computer is to communicate with GPRS. Core part of system software and hardware design is the MCU and GPRS serial communication module. so Completed the serial communication module hardware and software design of MCU and GPRS, tested, the serial communication can communicate smoothly.(3)Lower computer MCU's control program used C language. Including information acquisition and displaying program, MCU and GPRS module, serial communication program, sending text messages to achieve information transmission process, connecting GPRS network and sending data procedures .GPRS module receives a sequence of instructions related to AT commands can be achieved to GPRS network , then the sensor sent test data to the Internet network through GPRS network.(4)PC receiver software selected vc++ language platform. Host computer program designed to achieve test data on soil sensor wireless remote auto-read function. Tests show that this construction of the wireless transmission network, to achieve data transmission.