Environmental control device for agricultural greenhouse

Abstract

PROBLEM TO BE SOLVED: To provide environment control apparatus for use in agricultural houses which reduce the labor for setting up a user's target temperature and enable proper setting of temperature in an agricultural house even for the user having little plant growth knowledge and programming grounding.SOLUTION: The present invention has, at least, a solar radiation amount measuring means for measuring the amount of solar radiation, a CO2 concentration measuring means for measuring CO2 concentration, as well as an input means for inputting a target maximum temperature, a target minimum temperature, and one or a plurality of target temperature calculation coefficients, a target temperature calculation means calculating a target temperature in an agricultural house using a correlation among a solar radiation amount value, a CO2 concentration value, and a target temperature based on a target temperature calculation coefficient according to the target maximum temperature, the target minimum temperature, the solar radiation amount value, and the CO2 concentration value.SELECTED DRAWING: Figure 1

Description

technical field [0001] The present invention relates to environmental control in an agricultural greenhouse in an agricultural greenhouse. Background technique [0002] The target value of the temperature and humidity of the environment in the agricultural greenhouse is set by the user. In order to achieve the set target value, there are countermeasures by opening and closing the ventilation window, or operating the heating machine and refrigerator. Environmental control device for agricultural greenhouses for optimal environment for crops. [0003] Among such devices, conventionally, the temperature in the greenhouse is generally controlled to a desired value based on a target value set for each time zone. [0004] In other words, they are devices that control the target temperature in accordance with time. [0005] On the other hand, in the cultivation of crops, it is important to control the temperature suitable for the growth of crops. The suitable temperature for the...

AI Technical Summary

Problems solved by technology

However, in the conventional method of controlling the environment of the agricultural greenhouse that controls the target temperature according to the time, it does not take into account the amount of sunlight that differs depending on the weather and seasons even at the same time, and the amount of sunlight caused by the artificial addition of CO 2 or let the actual CO 2 Concentration, but a certain target temperature is allocated according to time, so there are cases where the temperature deviates from the suitable temperature for crop growth, and as a result, there are problems of growth retardation and reduced yield

[0007] On the other hand, in order to solve these temperatures, although there is a 2 Environmental control devices for agricultural greenhouses that set the IF to THEN rules corresponding to the concentration and determine the target temperature through programming. They require very complicated settings for agricultural producers and other users, and ordinary users cannot cope with them.

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