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Control method and control system for mechanical ventilation of greenhouse

A technology of mechanical ventilation and control method, which is applied in the direction of control/regulation system, greenhouse cultivation, non-electric variable control, etc. It can solve the problems of high energy consumption of mechanical ventilation in greenhouses, avoid large lag in response, low energy consumption, and avoid control errors Effect

Inactive Publication Date: 2012-08-22
JIAXING UNIV
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Problems solved by technology

[0005] The problem solved by the present invention is the problem of high energy consumption of existing greenhouse mechanical ventilation

Method used

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  • Control method and control system for mechanical ventilation of greenhouse
  • Control method and control system for mechanical ventilation of greenhouse
  • Control method and control system for mechanical ventilation of greenhouse

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Embodiment Construction

[0034] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0035] see figure 1 and figure 2 , the control system for mechanical ventilation in greenhouses of the present invention includes a processor 1 and at least one on-site processing device 2 . Each on-site processing device 2 includes an on-site controller 21 , two temperature sensors 22 , two humidity sensors 23 and a meteorological parameter sensor 24 .

[0036] read on figure 1 and figure 2 , the on-site controller 21 includes a controller 211 and a frequency converter 212 . The temperature sensor 22 is connected to the on-site controller 21, senses the temperature inside and outside the greenhouse, and transmits the sensed temperature to the on-site controller 21, specifically, in this embodiment, the temperature There are two senso...

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Abstract

The invention discloses a control method and a control system for mechanical ventilation of a greenhouse. The control method is used for controlling a fan in the greenhouse and comprises the following steps of: acquiring the rotating speed of the fan, temperatures inside and outside the greenhouse, humidity inside and outside the greenhouse and total solar radiation of the greenhouse; and generating a control signal for controlling rotation of the fan according to a greenhouse energy balance model based on the acquired rotating speed, temperatures inside and outside the greenhouse, humidity inside and outside the greenhouse and total solar radiation. According to the method and the system, the environmental conditions of the greenhouse can be acquired in real time based on the acquired rotating speed, temperatures inside and outside the greenhouse, humidity inside and outside the greenhouse and total solar radiation of the greenhouse, and the rotation of the fan is adjusted in real time based on the environmental conditions and according to the greenhouse energy balance model, so that continuous rotation of the fan can be controlled, and the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of agricultural environment control, in particular to a method for controlling mechanical ventilation in a greenhouse, and also to a control system for mechanical ventilation in a greenhouse. Background technique [0002] China is a large agricultural country with relatively scarce land resources, and the per capita arable land area is less than 0.1 hectare. Therefore, China must take the road of intensive agriculture and constantly devote itself to the development of high-efficiency facility agriculture. Large-scale greenhouse agricultural production and large-scale intensive breeding are important means to improve agricultural modernization production. However, in the total energy consumption of agricultural buildings, the energy consumption of climate environment regulation accounts for about 30% of the total. Therefore, the energy consumption of large-scale agricultural production buildings is the main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/24G05D27/02
CPCY02A40/25
Inventor 赵云王斌吴伟雄黄全风
Owner JIAXING UNIV
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