Greenhouse environment control system and control method
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A technology of control system and environment, applied in general control system, control/regulation system, program control, etc., can solve the problems of large number of on-site wiring, poor anti-interference ability, short transmission distance, etc., to achieve a high degree of automation and real-time performance Strong, low-cost effects
Inactive Publication Date: 2015-03-18
姚秋丽
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The most common of the existing greenhouse computer control systems is the distributed control system, which usually uses the RS485 communication protocol for data transmission. The disadvantages are that there are too many field wiring, short transmission distance, slow speed, and poor anti-interference ability
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[0015] As shown in the figure, the present invention includes CANH bus, CANL bus, computer, EPP interface, CAN controller, CAN transceiver, A / D input module, D / I input module, first relay output module, and second relay output module , Temperature and humidity transmission, illuminance transmission, CO2 transmission, wind speed transmission, rain and snow sensor, wind direction sensor, first motor, second motor, third motor, fourth motor, fifth motor, sixth motor, switch, solenoid valve, Skylight, inner shading net, wet curtain, fan, sprayer, hot air blower, sodium lamp, CO2 cylinder; computer, EPP interface, CAN controller, CAN transceiver are connected in sequence, CANH bus and CANL bus are respectively connected with CAN transceiver, A / D input module, D / I input module, first relay output module, second relay output module are connected, A / D input module is connected to temperature and humidity transmission, illuminance transmission, CO2 transmission, wind speed transmission...
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Abstract
The invention belongs to the technical field of environment control systems, and particularly relates to a greenhouse environment control system and a control method, which is fast in speed and strong in anti-interference ability. The system comprises a CANH bus, a CANL bus, a computer, an EPP interface, a CAN controller, a CAN transceiver, an A / D input module, a D / I input module, a first relay output module, a second relay output module, a temperature and humidity transmission, an illumination transmission, a CO2 transmission, a wind speed transmission, a rain and snow sensor, a wind direction sensor, a first motor, a second motor, a third motor, a fourth motor, a fifth motor, a sixth motor, a switch, a solenoid valve, a skylight, an inner sun shading net, a wet curtain, a fan, a sprayer, a hot air blower, a sodium lamp and a CO2 steel cylinder. The system is characterized in that the computer, the EPP interface, the CAN controller and the CAN transceiver are sequentially connected.
Description
technical field [0001] The invention belongs to the technical field of environment control systems, and in particular relates to a greenhouse environment control system and a control method. Background technique [0002] Greenhouse environment control is one of the core technologies of facility agriculture. It refers to controlling the temperature, humidity, light, and CO2 concentration in the greenhouse by using certain control means according to the needs of crop growth in the greenhouse and the influence of the external environment. and other environmental parameters to make them reach or be as close as possible to the optimum state of crop growth requirements. The most common of the existing greenhouse computer control systems is the distributed control system, which usually uses the RS485 communication protocol for data transmission. Its disadvantages are that there are too many field wiring, short transmission distance, slow speed, and poor anti-interference ability. ...
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