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The article describes prospects for the development of multicriterion electro-optical system for alarm and pre-emergency situations control in a coal mine. The problems of scientific research, the implementation of which will improve fire safety in coal mines are formulated.
Modeling of flame radiation at burning of methane-air mixtures at an initial stage of development is executed. The basic analytical dependences for modeling are defined at an assumption, that burning is isothermal on volume and has the sphere form. Calculation of spectral radiant exitance from a surface of fireball is executed. Irradiance on an elementary platform depending on distance to fireball...
Article describes movement control algorithm of the fire robot based on a quadcopter along predetermined trajectory in the secure premise. Known approaches to determining of the fire robot location are analyzed. The approach to determining of the fire robot location is chosen taking into account requirements to the robot. The mathematical apparatus for determining of quadcopter coordinates and control...
The article describes features of determine optimum spectral ranges of flame radiation control when using a compensation method of optical noises suppression. The criterion of optimality by determination of optimum spectral ranges of a flame radiation control taking into account technical realization of a compensation method of optical noises suppression is formulated. Photodetectors are chosen and...
The approach to determining of control points quantity and their arrangement on protected object for high-speed multipoint electro-optical system of fire detection and determine its spatial coordinates (EOS) is described. Optimality criteria of application EOS for maintenance of fire safety in coal mines taking into account methods of flame coordinates determining are formulated. Variants of control...
Article describes basic decisions on construction of the fire robot based on a quadcopter. The fire robot carries out patrol of a premise for detection of a fire and its liquidation. The basic technical requirements are formulated for the fire robot. The block diagram and constructive blocks for robot realization are offered. Hardware of the fire robot movement control system and method of video signal...
The article describes features of use of a compensation method of optical noises suppression for the explosion detection electro-optical systems. Results of experimental investigation of compensation method efficiency are given.
Computer simulation of optical radiation attenuation in dispersed system «coal dust-air» is performed. Basic analytical relationships which describe the radiation attenuation in the gas-dispersed system are determined. Checking of the computer model adequacy is carried out. Research of optical radiation attenuation on the basis of computer simulation is carried out. Computer simulation is executed...
The three-channel optical-electronic device of two spectral relations is described in article. The theoretical construction principles of the device are formulated. The technical solutions for device implementation were worked out by the results of the carried out computer simulation. Carrying out tests of the developed device became the end of work. The result was the testing of the developed device.
Article describes a method for determining the difference of adulterated and natural honey by spectral analysis. Features of the method are formulated. The technique of carrying out research, design of laboratory setup and the block diagram of a household appliance were developed. Spectral characteristics transmittance transmittances of the honey were received a result of an experimental study. Product...
The article describes modeling task statement of optical radiation flux of fuel-air (hydrocarbonic) mixtures explosion at an initial stage of development on an example of coal mines atmosphere. Parameters of coal mines atmosphere are considered. The process of ignition and combustion of methane-air mixtures in coal mines atmosphere is analyzed. The approach to the decision of applied modeling problem...
The article describes the results of experiments that aim to study the possibility of using the spectral pyrometry method for fire detection in dust-gas-air environments.
Experimental research of optical radiation attenuation in dispersed system «coal dust-air» is executed. The method of coal dust preparation with set dispersity and method of research carrying out are developed. The block diagram of laboratory setup is offered. Experimental dependences of absorbance in dispersed system «coal dust-air» from wavelength at various concentration of coal dust and experimental...
The article describes an automated installation for the preparation and package suppository mixture in the cellular package. The block diagram of the automated system of the developed installation and the flowchart of algorithm of the program of the microcontroller are also provided.
The article describes the numerical modeling of the problem of determining the spatial coordinates of the fire seat by multipoint electro-optical system. The algorithm for determining the spatial coordinates of the seat of fire based on Newton's method is proposed. The results of testing the algorithm on the basis of theoretically obtained initial data for three-dimensional protected object are represented...
The techniques for determining of the main technical parameters of the two spectral ratios optical-electronic device are shown in the article. The testing technique for response time, angular feld, temperature detection threshold and validity of decision-making are described.
The article describes statement of a task of modeling of optical radiation attenuation in dispersed system «coal dust-air». Parameters and characteristics of dispersed system «coal dust-air» are considered. These parameters and characteristics define attenuation of optical radiation. Approaches to modeling of optical radiation attenuation in dispersed system «coal dust-air» are analyzed. Use of Mie...
In the world various types multiband fame detectors are made. Requirements to such fame detectors constantly increase. High-speed (no more than 5 ms) fame detectors with the reduction of optical noise are required. Flame detectors are required which are possible to unite into a system. In the article the high-speed fame detector with the reduction of optical noise by the compensation method is described...
The results of the experimental determination of the two-spectral ratio optical-electronic device parameters are given in article. It is shown that the developed device allows to provide a validity of decision-making at the external optical illumination presence equal to 0.95.
The article is devoted to laboratory research by determining the basic operational parameters of the electro-optical gauge of multipoint system of determining of the seat of fire arrangement. Methods of determining of sensitivity threshold and angular field of the gauge are offered. Results of laboratory research of the gauge according to the offered methods are given.
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