Design Of Intelligent Monitor And Control System For The Greenhouse Environment

At present, our country agriculture situation had the fundamental change, theagricultural production entered the main dependence science and technology to improve the agricultural product quality, theacceleration structure adjustment, rapidly increases the farmer toreceive, to enhance the agricultural overall benefit, the improvementecological environment as well as vigorously enhances the agriculturalinternational competition strength the new time. The greenhouse technology is realizes this transformation importantway, the development develops the greenhouse intelligence environmental monitoring system is extremely essential. In view ofthis question, this article proposed and has designed one kind of lowend, the practical greenhouse environment intelligence monitor and thecontrol system.This article has consulted the massive domestic andforeignreference, studed in several kind of present markets the popular greenhouse enviromental control system, and according to in thegreenhouse to affect the environment factor which the crops grows,namely the temperature, the humidity, illumination and the CO2 environment condition, the control characteristic and the controlmethod, proposed suits this system the environment factor control plan.This article take micro controller LPC2132 of PHILIPS Corporation as a core, designed The temperature, the humidity, the strength of illumination and the CO2 density sensor, the sensor examines the signalling carries onthe data processing to LPC2132, realized to the environmentfactor survey control. This article introduced the greenhouse environment supervisory system hardware, the software design with emphasis.In the aspect hardware, the design introduced each part of designs thought, theprinciple electric circuit as well as the antiinterference methods, And has produced the system total hardware schematic diagram;Moreover, for realizing low cost of system ,cheap component was chosen possibly under satisfying the design request.In the aspect software, This article has inserted embedded operation systemμC/OS-II to transplant LPC2132, designed controller each duty.μC/OS-II application enable the system to have a better timeliness and the reliability, simultaneously is advantageous for the procedureexpansion, causing easy which the program extension.In the greenhouse, the warm humidity environment is very difficulty establish the system precise mathematical model, could not obtain the extremely satisfactory control effect using theconventional control algorithm,so this article uses the fuzzy controlalgorithm to realize to the greenhouse in the warm humidityintelligent control.This article according to designed the system the function,the design,installs and has debugged the test installation, and has composed the supervisory system according to 485 correspondences. themassive experiments, has confirmed this system principle designaccuracy and the feasibility.Finally, this document summaried and introduced the main work, explained this article characteristic and the significance,simultaneously, this article had pointed out the system design insufficiency and the improvement mentality, have built the foundation for the next topic further research.