OPTOELECTRONIC DEVICE FOR REMOTE TEMPERATURE CONTROL OF SANITARY UNITS

The paper introduces an optoelectronic two-wave method for remote control of raw cotton moisture. To improve the quality of materials obtained from the fiber, it is necessary to proper organize its storage and comply with the optimal modes of processing technology at all stages of production. Proper storage and selection of technological processing depend on the quality indicators of the fiber, namely its moisture. The study shows that currently used methods and devices for the fiber moisture control do not meet the requirements of rapidity and the required measurement accuracy. We found it relevant to develop highly sensitive, accurate and reliable control devices for raw cotton moisture using new high-performance semiconductor radiation sources in the near infrared region. The paper presents a block diagram of an optoelectronic device for remote control of raw cotton moisture. The device uses LED19-PR with a typical maximum emission wavelength of 1.95 µm as radiation sources. The results of remote control of raw cotton moisture are given.

Light and Temperature Control for Greenhouse Plant Growth

Engineering Technologies and Systems ◽

10.15507/2658-4123.031.202101.008-020 ◽

2021 ◽

Vol 31 (1) ◽

pp. 8-20

Author(s):

Saken K. Sheryazov ◽

Svetlana A. Popova

Keyword(s):

Control System ◽

Energy Consumption ◽

Mathematical Models ◽

Temperature Control ◽

Control Algorithm ◽

Block Diagram ◽

Control Plant ◽

Reduce Energy Consumption ◽

Supplementary Lighting ◽

Growing Conditions

Introduction. The article deals with the conditions for growing greenhouse plants. Supplementary lighting supports the process of plant photosynthesis and the microclimate in the greenhouse. The authors suggest the ways to reduce energy consumption in greenhouses by controlling the microclimate and process of supplementary lighting in greenhouses. Materials and Methods. Special lighting and temperature are required for growing greenhouse plants. A method of efficient plant growing is light and temperature control. The development of a control algorithm requires the mathematical models that relate the process of photosynthesis to the microclimate parameters. There are given the mathematical models based on the experimental data. Results. The control system and algorithm to control plant-growing conditions have been developed to maintain the greenhouse microclimate. LED lamps are used to control the lighting process. The authors present the developed block diagram of the control system, which contains four channels responsible for the main energy-intensive microclimate factors. The description of the algorithm of the greenhouse light-temperature control is given. Discussion and Conclusion. In conclusion, the need to maintain the greenhouse microclimate and supplementary lighting with the different radiation spectrum for the efficient cultivation of greenhouse plants is shown. The developed structure and control algorithm for the supplementary plant lighting process and greenhouse illumination through using LED lamps help reduce energy consumption.

A Solar-Powered In-Vehicle Semiconductor Refrigeration System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.587-589.199 ◽

2014 ◽

Vol 587-589 ◽

pp. 199-202 ◽

Cited By ~ 1

Author(s):

Yi Tao Liu ◽

Chang Ping Zhu ◽

Jun Yang Zhao ◽

Hao Bo Sun ◽

Bin Wang ◽

...

Keyword(s):

Remote Control ◽

Temperature Control ◽

Model Experiment ◽

Short Message ◽

Refrigeration System ◽

Control Effect ◽

Environmental Friendly ◽

Application Potential ◽

Solar Powered ◽

High Application

A solar-powered in-vehicle semiconductor refrigeration system by remote control is put forward. With the solar power as the source of energy, the in-vehicle refrigeration system uses the safe and pollution-free semiconductor refrigeration method, and adopts the GSM technology to make the remote control via the short message of the mobile phone, so as to achieve the cooling effect without starting the engine of the car. Through the model experiment, the working current and power consumption as well as the refrigeration temperature control effect of the system were analyzed, and verified the feasibility of the system. Being energy saving and environmental friendly, this design has a high application potential.

Aсtive electro-optical system of targets detection with dynamic spectral processing of optical radiation

Semiconductor Physics Quantum Electronics & Optoelectronics ◽

10.15407/spqeo24.02.218 ◽

2021 ◽

Vol 24 (02) ◽

pp. 218-226

Author(s):

L.F. Kupchenko ◽

◽

V.D. Karlov ◽

A.S. Rybiak ◽

О.А. Goorin ◽

...

Keyword(s):

Optical System ◽

Optical Radiation ◽

Block Diagram ◽

Imaging Spectroscopy ◽

Optical Signal ◽

Optical Systems ◽

Spectral Processing ◽

Mathematical Operation ◽

Radiation Fields ◽

Laser Vision

The issues discussed in this paper provide for further development of studies in the sphere of imaging spectroscopy and laser vision. In terms of forming the information fields (radiation fields), the electro-optical systems are subdivided into the passive and active ones. Passive electro-optical systems use the information fields formed by natural radiation sources, whereas the active ones suggest using artificial sources. Comparative analysis of mathematical and physical issues of designing the electro-optical systems with dynamic spectral processing of optical radiation of the passive and active types has been performed. It has been shown that the controlled dynamic spectral processing of optical radiation can be implemented within the passive and active electro-optical systems on the basis of the same algorithm that represents operation of the optical processor performing the mathematical operation of dot product. The authors have developed the block diagram of an active electro-optical system with dynamic spectral processing. The algorithm for optimal detection of optical signals has been developed using basics of the signal detection theory. Mathematical modeling of target detection against an inhomogeneous background has been performed. It has been shown that the optimal dynamic spectral processing of optical radiation in active electro-optical system enables to separate the desired optical signal by suppressing the background signal.

TEMPERATURE CONTROL OF THE CUTTING SURFACES OF THE CUTTING PART OF NANO–COATED SCANS

Fundamental and Applied Problems of Engineering and Technology ◽

10.33979/2073-7408-2021-347-3-78-84 ◽

2021 ◽

Vol 3 ◽

pp. 78-84

Author(s):

S.V. KUDRYAVTSEV ◽

M.F. SELEMENEV ◽

E.A. PROSOLOV ◽

G.B. PANKOV ◽

A.S. TARAPANOV

Keyword(s):

Friction Coefficient ◽

Theoretical Calculation ◽

Real Time ◽

Temperature Change ◽

Temperature Control ◽

Block Diagram ◽

Processing Conditions ◽

Cutting Zone ◽

Contact Surfaces ◽

Effective Use

The analysis of the temperature change of the contact surfaces of the cutting part of the reamer and the theoretical calculation under various processing conditions for the reaming process are carried out. A block diagram of the installation is presented, which allows recording the temperature change in the cutting zone on a computer in real time. It was found that with the effective use of nanocoatings (epilams), the friction coefficient decreases, thereby decreasing the temperature of the deployment process and increasing the tool life.

Design of Heat Metering and Temperature Control System on the Basis of M-Bus

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.427-429.521 ◽

2013 ◽

Vol 427-429 ◽

pp. 521-524

Author(s):

Lei Jing ◽

Bang Hua Ma ◽

Lai Lei Jiao

Keyword(s):

Control System ◽

Remote Control ◽

Data Collection ◽

Temperature Control ◽

Measurement Data ◽

Temperature Control System ◽

Property Management ◽

Heat Measurement ◽

Heat Metering ◽

Hardware Circuit

Heat metering and temperature control system is committed to saving energy, reducing emission , lowering consumption of heating energy, decreasing the workload of heating companies and the property management sectors. M-Bus, 485, Zigbee and GPRS are used in this system. It integrates heat measurement, data collection and processing, and remote control. This paper presents the structure of heat metering and temperature control system, focusing on the application of M-Bus and the design of its hardware circuit.

Voice production model based on phonation biophysics

EURASIP Journal on Advances in Signal Processing ◽

10.1186/s13634-021-00746-2 ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Raissa Bezerra Rocha ◽

Wamberto José Lira de Queiroz ◽

Marcelo Sampaio de Alencar

Keyword(s):

Spectral Density ◽

Power Spectral Density ◽

Block Diagram ◽

Production Model ◽

Vocal Cords ◽

Closed Expression ◽

Voice Production ◽

Voice Signal ◽

Power Spectral ◽

The Voice

AbstractThis paper presents a proposal to a source-filter theory of voice production, more precisely related to voiced sounds. It is a proposal of a model to generate signal using linear and time-invariant systems and takes into account the phonation biophysics and the cyclostationary characteristics of the voice signal, related to the vibrational behavior of the vocal cords. The model suggests that the oscillation frequency of the vocal cords is a function of its mass and length, but controlled by the longitudinal tension applied to them. The mathematical description of the model of glottal excitation is presented, along with a mathematical closed expression for the power spectral density of the signal that excites the glottis. The voice signal, whose parameters can be adjusted for detection and classification of glottis pathologies, is also present. As a result, the output of each block diagram that represents the proposed model is analysed, including a power spectral density comparison between emulated voice, original voice, and classic source-filter model. The Log Spectral Distortion is computed, providing values below 1.40 dB, indicating an acceptable distortion for all cases.

DEVELOPING HARDWARE AND SOFTWARE COMPLEX FOR REMOTE CONTROL OF GREENHOUSE MICROCLIMATE

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES MANAGEMENT COMPUTER SCIENCE AND INFORMATICS ◽

10.24143/2072-9502-2021-4-68-75 ◽

2021 ◽

Vol 2021 (4) ◽

pp. 68-75

Author(s):

Svetlana Abdulaevna Feylamazova ◽

Zukhra Khalipaevna Akhmedova ◽

Zinfirat Shagumilaevna Abdurazakova

Keyword(s):

Remote Control ◽

Internet Of Things ◽

Block Diagram ◽

Control Object ◽

Cloud Service ◽

Cloud Services ◽

Main Element ◽

The Internet ◽

Functional Requirements ◽

The Internet Of Things

The development of Internet technologies allows remote control of various devices. The paper presents a description of a greenhouse microclimate control device with remote control. There are used the concept of the Internet of Things, which allows to remotely control devices using cloud services. The Internet of Things is one of the popular trends in the networking environment allowing data to be transferred between devices. There is no need to write a program to transfer data, it is enough to use one of the many existing cloud services. The cloud service records the microclimate parameters and displays them on-line on the user's computer or phone. The user can observe the data received from the sensors installed in the greenhouse and control the executive devices, namely, turn on and off the heating, irrigation, lighting and opening of the vents. The device under development will help not only take the microclimate indicators in the room and transfer them via the Internet to a personal computer or telephone while being remote from the measurement object, but also control the actuators inside the greenhouse. The functional requirements for the developed device are determined, the block diagram of the device is shown, the main element of which is the Arduino Uno board, on which not only the microcontroller is located, but also the connectors of external devices. The user interface is presented and described, which provides interaction between a user and a control object, developed in the IoControl cloud service, and the stages of its development are also presented. The modes of microclimate control and the corresponding actuators and variables are considered.

BLOCK DIAGRAM OF A MULTI-FREQUENCY RADIOMETRIC COMPLEX FOR UAV DETECTION IN DIFFERENT METEOROLOGICAL CONDITIONS

Information and Telecommunication Sciences ◽

10.20535/2411-2976.22021.50-57 ◽

2021 ◽

pp. 50-57

Author(s):

Nikolay Ruzhentsev ◽

Simeon Zhyla ◽

Vladimir Pavlikov ◽

Gleb Cherepnin ◽

Eduard Tserne ◽

...

Keyword(s):

Thermal Radiation ◽

Traffic Control ◽

Block Diagram ◽

Meteorological Conditions ◽

Measurement Systems ◽

Detection Systems ◽

Cloudy Atmosphere ◽

Highly Sensitive ◽

Terrorist Acts ◽

And Control

Background. Technologies for the production of unmanned aerial vehicles (UAVs) of various classes are rapidly developing in Ukraine and the world. Small in terms of weight and dimensions and almost invisible for most information and measurement systems, UAVs began to be used in various industries - from the national economy to multimedia and advertising. Together with their useful application, new dangers and incidents have appeared - a collision of UAVs with people, structures, cultural monuments, the transportation of criminal goods, terrorist acts, flights over prohibited areas and within airports. UAV detection and control of their movement in populated areas and near critical objects are becoming one of the most important tasks of air traffic control services. The existing systems of the optical, acoustic and radar ranges cannot effectively perform such tasks in difficult meteorological conditions. As an addition to the already developed detection systems, it is proposed to use radiometric systems that register the UAV's own radio-thermal radiation. The authors have developed the theoretical foundations for the construction of multifrequency complexes necessary for the specification of their structural schemes. Objective. The purpose of the paper is development of a scheme for a multi-frequency radiometric complex for detecting UAVs in different meteorological conditions based on optimal algorithms. Methods. Analysis of the experience in the development of radiometric systems and methods for dealing with fluctuations in the gain of receivers, optimal operations for processing signals of intrinsic radio-thermal radiation, investigations of the probabilistic characteristics of detection and analysis of the domestic market of microwave technology developers will make it possible to develop a scheme of a multifrequency radiometric complex that will perform reliable measurements in various meteorological conditions. Results. A block diagram of a four-frequency radiometric complex is proposed, which can be implemented in practice and is capable of performing reliable measurements in various meteorological conditions. The frequencies 10 GHz, 20 GHz, 35 GHz, and 94 GHz were chosen as the resonant frequencies for tuning the radiometric receivers. For a given design and characteristics of receivers, the probabilities of detecting a UAV were calculated depending on the range of its flight. Conclusions. From the results of the analysis of the existing achievements in the development of radiometric systems in Ukraine and the elemental base of microwave components available on the market, it follows that the Ku and K bands have the worst characteristics of spatial resolution, but are all-weather. The Ka and W bands are highly sensitive to radio-thermal radiation against the background of a clear sky, but are completely "blind" in a cloudy atmosphere and in rain. The results of calculating the detection ranges with a probability of 0.9 lie in the range from 1 to 3 km, depending on the condition of the atmosphere. These results coincide with the known detection ranges of optical, acoustic and radar systems, but the selected parameters of the receivers do not correspond to potential world achievements and can be improved.

Cross spectral density propagation through optical systems

Journal de Physique III ◽

10.1051/jp3:1991211 ◽

1991 ◽

Vol 1 (9) ◽

pp. 1569-1574

Author(s):

F. Bloisi ◽

L. Vicari

Keyword(s):

Spectral Density ◽

Optical Systems ◽

Cross Spectral Density