Industrial Automatic Control Systems and Controllers Annotation << Back Comprehensive Control of the Greenhouse Microclimate Parameters V.I. Domanov, E.V. Pevcheva 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. Keywords: sensor for measuring temperature and humidity; integrated sensor; sound attenuation coefficient, frequency of sound vibrations; energy efficiency. DOI: 10.25791/asu.04.2019.574 Contacts: E-mail: andrew.domanov@gmail.com, E-mail: pevche@ya.ru Pp. 03-08.