Accurate refrigeration type high-precision automatic temperature control system for greenhouse

Abstract

The invention discloses an accurate refrigeration type high-precision automatic temperature control system for a greenhouse. The system is characterized in that the system mainly consists of a micro controller, an electric heater, a refrigerator driving circuit, a display device, an adjustable low-pass filter circuit, a storage device, a signal conversion circuit connected with the adjustable low-pass filter circuit, a temperature sensor group connected with the signal conversion circuit, and a refrigerator connected with the refrigerator driving circuit, wherein the electric heater, the refrigerator driving circuit, the display device, the adjustable low-pass filter circuit, and the storage device are connected with the micro controller. According to the invention, a temperature in a greenhouse can be collected in real time; when the temperature in the greenhouse is too high or too low, the refrigerator or the electric heater can be turned on automatically, so that the temperature can be adjusted timely and accurately and thus the intelligent temperature collection and temperature control can be realized and the good condition can be provided for crop growth. Meanwhile, the automation degree is high and thus the labor force is saved. The refrigerator driving circuit drives the refrigerator, thereby improving working stability of the refrigerator and realizing a good refrigeration effect.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a precise refrigeration type high-precision temperature automatic control system for greenhouses. Background technique [0002] The growth of crops is closely related to temperature. At present, many vegetables are grown in greenhouses. For greenhouses, the most important management factor is temperature control. If the temperature is too low, the vegetables will freeze to death or stop growing. It is not conducive to the growth of vegetables, so in the process of vegetable cultivation, the temperature of the greenhouse must always be controlled within the range suitable for vegetable growth. However, at present, the temperature control of the greenhouse mainly relies on manual control, which not only consumes a lot of manpower, but also is prone to errors. Contents of the invention [0003] The purpose of the present invention is to overcome the defects that the traditional g...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of traditional greenhouse temperature relying on manual control, which not only consumes a lot of manpower, but also is prone to errors, and provides an accurate refrigeration type high-precision temperature automatic control system for greenhouses

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