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Comprehensive Control of the Greenhouse Microclimate Parameters

Комплексный контроль параметров микроклимата теплицы

Comprehensive Control of the Greenhouse Microclimate Parameters

Abstract

Рассматривается возможность создания и эффективность применения интегрального комплексного датчика измерения температуры и влажности в теплице. Приводятся экспериментальные данные измерения температуры различными датчиками в теплице и графики, характеризующие работу системы управления этой координатой по показаниям штатных датчиков. Анализ приведенных данных показывает наличие разброса показаний, в том числе штатных датчиков. На основании этого делается вывод о целесообразности модернизации процесса измерения. Предлагается использовать зависимость коэффициента затухания звука от температуры и влажности для создания интегрального комплексного датчика. Обосновываются преимущества применения предлагаемого датчика. Приводится алгоритм нахождения измеряемых величин. Показана методика выбора частоты звуковых колебаний с учетом конкретных условий применения датчика. Положительный эффект достигается за счет повышения информативности полученных данных и возможности повышения точности за счет увеличения частоты измерений. Приводятся расчеты, показывающие энергетическую и экономическую эффективность при использовании предлагаемого интегрального датчика. The possibility of creating and using an integrated complex sensor measuring the temperature and humidity in a greenhouse is considered. The experimental data of temperature measurement by various sensors in the greenhouse and graphs characterizing the operation of the control system of this coordinate according to the readings of the standard sensors are given. Analysis of the data shows the presence of scatter readings, including regular sensors. Based on this, it is concluded that it is expedient to modernize the measurement process. It is proposed to use the dependence of the attenuation coefficient of sound on temperature and humidity to create an integrated complex sensor. The advantages of using the proposed sensor are substantiated. An algorithm for finding the measured values is given. A technique for selecting the frequency of sound vibrations is shown, taking into account the specific conditions of the sensor application. The positive effect is achieved by increasing the information content of the data and the possibility of improving accuracy by increasing the frequency of measurements. The calculations showing the energy and economic efficiency when using the proposed integrated sensor are given.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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