Research And Implementation Of Greenhouse Environment Control System Based On Remote Communication Technology

Now how to use remote automatic control system to control the environment effectively and how to manage crop growth effectively, that is two important tasks in greenhouse research. It has much significance to improve the level of greenhouse manufacturing. In order to control the environment effectively,many mature and advanced methods should be applied in the control-system of greenhouse.In view of the need of monitoring each kind of environment factor in greenhouse. This paper presents a data acquisition and auxiliary equipment control system based on ARM9 AT91RM9200 processor and operating system Linux. We apply the Siemens GPRS modules-MC39i as the communication module to design a kind of greenhouse automatic remote control system for auxiliary equipment. The system can collect the data of environmental factors in greenhouse,such as temperature,humidity,light,concentration of carbon dioxide, and according to the above parameters,remote monitoring and management for the related equipment can be made by using server-side software and mobile phone. The experimental results denoted that the design scheme was rational,and Technology was reliable,and can satisfy a variety of auxiliary equipment of greenhouse remote control and diagnostic requirements,it can be widely used in the future.Some advanced technologies used in the system can be regarded as the integrated innovations in the field of agricultural monitoring, which mainly include the following points:(1) ARM Embedded Technology. Embedded system, with its stable, safe and reliable characteristics, is widely used in industrial control field, but it also has broad application prospects in the field of agriculture. Remote monitoring system, which is based on embedded system, break through the traditional mode of control and achieve the system's decentralized control and centralized management, with a high practical value.(2) Wireless communication technology. We apply the Siemens GPRS modules-MC39i as the communication module to make whole system more efficient and real-time, through wireless communication of the PC computer and the terminal system, so that greenhouse remote control is possible, the system has human-computer interaction capabilities to achieve "man to machine" remote control effect.(3) Network video monitoring technology. As long as it can provide power and ADSL network communication lines, network video monitoring system can be installed. In view of wide geographic distribution for the greenhouse, in order to achieve greenhouse management and few people on duty, installation of remote send video images system can be very important, the technology has played an important security guarantees in the greenhouse a remote control system.(4) A new method for data storage was developed by using flash memory disk. Flash memory disk has many advantages such as portable, low power consumption and large capacity storage. The results showed the added functions were very reliable not only to reduce data loss caused by broken network and jam communication, but to overcome the limitation that has to provide both a computer and Internet linkage during data access.(5) Control technology application. Traditional greenhouse wireless remote monitoring system only achieved the effect of wireless remote monitoring; there is no real sense of wireless remote "control" function. In this study, we design control circuit of implement agency to achieve the functions that from weak to strong power control. More comprehensive use of embedded technology and wireless communication technology enable remote control functionality of greenhouse auxiliary equipment, which has important significance in the greenhouse remote management control.This system has many characteristic such as operate easily, make policy intelligently, run reliable, easy to expand. As long as this system is transformed a little,ones that can realize to other factors are observed and control, or through increase sensor can realize some many goal factor observe and control more.At last,we have a good result of the system in the running test,the software can work well with the hardware,and has characteristics such as high reliability and good expansibility,can control the greenhouse well,reach the purpose,and has good economic and social profit.