Research And Design Of Greenhouse Automatic Control System

The system takes the ATmage2560of the ATMEL company microprocessor as host controller, and contain the signal process circuit, communication circuit and other affixation circuit. With the STC12C2502AD microprocessor for assist controller, form with sample circuit, amplifier and output control circuit. The function dispersion sampling and concentration treatment and local control have being realization, and it can work automatic or manually; The assist controller sample the environment quality and convert them to digital signal and send to the host controller, and receive the control signal form the host controller than execute the command; The host controller have to receive all the assist controller signal and process it concentrately and display the result on local displayer and send it to the PC.The hardware designs aspect, it use the capacity type humidity sensor HM1500to detect the air humidity,use the new develop soil humidity sensor, SWRZ, to detect the soil humidity, and it air temperature sensor is DS18B20, and light sensor HD202; The STC12C2502microprocessor be use for the assist controller.The program was wrote with C language, which is easy to read for other people and use to other system; The main program contain the supervise routing, keyboard, time and A/D convert routing. The experiment result show that the system can run well.