The Controller Research Of Economical Sunlight Greenhouse

Our nation has a great population and the cultivated area are few, average cultivated area of per person reduced from 1.59 Chinese acres in 2003 to 1. 41 Chinese acres in 2004. Moreover the request to the vegetables unceasingly promotes along with the people living standard enhancement, the appearance of greenhouse has solved this demand. The greenhouse production began very early in foreign country, so the output of the greenhouse crops and the level of technology together with management is much greater than our country. The overseas greenhouse structure and the control management adapts its local geographical environment condition and cannot adapt our country's situation completely. The region of our country is so broad; the difference of climate between north and south is very big. According the greenhouse structure and the control in each place is inconsistent. Generally speaking, our country's greenhouse starts very late, this situation formed the modern management level is not get well. How to combine all-right control technology with the greenhouse environment control organically will be an important aspect in greenhouse research. This result will not affect the level of greenhouse industry in our country directly, but also relate each person's life.The topic of this article is proposed in such great premise and its goal is to find one advanced control technology to adapt to the north environment condition of our country. The way can solve the problems such as the level of controlling greenhouse environment is low at present and the actual problem in forming the large-scale industrial production, and that promote greenhouse production construction in our country.This controller combined the microcomputer control technology, the GPRS technology, the sensor technology with the examination technology. The controller is designed to examine and control the temperature, the humidity, the degree of illumination, the carbon dioxide density for energy conservation sunlight greenhouse, so the crops can have the best habitat condition. This controller take the 89C52 monolithic integrated circuit as a core, it can processing the parameter of the greenhouse environment such as gathering in real-time, processing, storaging, displaying and so on, and carry on the regulation to the actuation implementing machine. This controller carries on the communication through the RS232 connection and PC machine, realizes synthesis management of demonstration, memory, inquiry, statistics to the datum. In the time it can produce best environment parameter which grows in view of the different crops in different time, and process the measured data by this best parameter. This controller is designed to achieve the greenhouse intellectualized management. At the same time the controller used the...