Automatic control system of underground engineering structures
(57) Abstract:Automatic control system of underground engineering structures relates to the mining industry, namely, the controls are underground technological structures and their metrological support. The inventive automatic control system of underground engineering structures contains methane sensors 1, connected to the transducers 2 signals, the power supply unit 9, unit 5 logical processing of the signal, the alarm unit 8 and the frame 10, it entered the device 4 stabilization and the selection signal, unit 6, display unit 7 of the agreement, forming the 3 remote control and alarm methane, and 11 remote Supervisory control equipment, the device logical processing of the signal is made of two blocks, one of which is made of series-connected receiver LEDs 33 optocouplers and transistor, and the other of the diodes, and the device stabilization and extraction of signal from each process area contains three parallel stabilization unit and a selection signal, each of which is made of a stabilizer connected to one of the diagonals of the diode is of the iodines optocouplers the stabilizer device for stabilizing and selection of the connected unit 9 power supply, and the output of the stabilization device and the selection signal is connected to the device 5 logical processing of the signal through the display unit 6 is connected to the mnemonic 10 monitoring and alarm methane and through the block 7 approval to the alarm unit 8, and 11 remote Supervisory control of process equipment contains the logic block 12 and control feeders connected to the block 15 power supply, and the display unit 13 of the feeders, the latter is connected with a mnemonic 14 technological equipment, and the output unit 7 matching remote control and alarm methane connected to the logic block 12 and control feeders remote Supervisory control equipment. 2 Il. The invention relates to the mining industry, and in particular to automated systems and controls underground technological structures and their metrological support, and can be used in the mining industry, and in any underground engineering structures, in particular in the sewers of Moscow.Known automatic control system of technological equipment, and the mnemonic  Known system bulky and power consuming.Also known automatic control system of technological equipment containing methane sensors connected to the converters, the power supply connected to the unit receiving and sharing information, coupled with alarm, control units and mnemonic  This system is also bulky, consumes a lot of energy with a low reliability due to the use of contact elements.The aim of the invention is to increase reliability while reducing material and energy consumption.This is achieved by the fact that it entered the stabilization device and the selection signal, the display unit and unit coordination, forming a remote monitoring and alarm methane content, the remote Supervisory control equipment, the device logical processing of the signal is made of two parts, one of which is made of series-connected receiver LEDs, optocouplers and the transistor, and the other of the diodes, and the device stabilization and extraction of signal from each process area contains three parallel stabilization unit and a selection signal, each of which NAHL which through a resistor and a Zener diode connected to one of the LEDs, optocouplers, the stabilizer device for stabilizing and selection signal is connected to the power supply and the output stabilization and the selection signal is connected to the device logical processing of the signal through the display unit is connected to the mnemonic control and alarm methane, and through the power of negotiation to the alarm unit, and the remote Supervisory control of process equipment contains the logic unit and control feeders connected to the power supply unit and the display unit feeders, the latter is connected with a mnemonic process equipment, and the output of block matching remote control and alarm methane connected to the logic unit and control feeders remote Supervisory control equipment.In Fig. 1 shows a block diagram of automatic control system of underground engineering structures; Fig. 2 is an example of executing devices 3, 5, 8, and 10.Automatic control system (ACS) underground engineering structures consists of two systems:
automatic system monitoring and alarm methane content (ASCM);
automatic control systems are technologically the t of the sensor 1 methane, Converter 2 tone, 3 remote control and alarm about the presence of methane containing device 4 stabilization and extraction of signal from each process area, the device 5 logical signal processing, unit 6, display unit 7 of the agreement, block 8 alarm unit 9 power and the mnemonic of the 10 ASCM.Automatic control system of technological equipment consists of 11 remote Supervisory control equipment, made of block 12 of the logic and control feeders, block 13 status indication feeders, mimic panels 14 AUTO and block 15 power.Sensors 1 methane through the converters 2 signal two-way electrical communication connection with the device 4 stabilization and the selection signal, the output of which is connected to the device 5 logical signal processing, and the output of the latter through the block 6 display connected to the mnemonic of the 10 ASCM and through the block 7 approval to the unit 8 signaling. The output unit 7 coordination is connected to the logic block 12 and control feeders, the output of which is connected to the feeders of the fan 16, pump 17, working lights 18 and emergency lighting 19, feeder 16, 17 and 18 through the respective control boards 20, 21 and 22 are connected to teleseries 26 directly.At each technological area of the collector is installed on three of the methane sensor 1, so each device 4 stabilization and allocation signal contains three stabilizer 27, diode rectifier bridge 28 and optocouplers 29. And one of the LEDs 30 optocoupler 29 included in one of the diagonals of the diode rectifier bridge 28 through resistor 31 and diode 32. Other LEDs 33 optocoupler 29 are connected in series and together with the transistor 34 to form the first block OR device 35 5 logical signal processing and its the second block 36 is made on the diodes 37.Unit 7 matching is performed on the transistor 38, switch 39 of the manual and automatic modes.The logic block 12 and control feeders contains diodes 40, 41, 42 and 43, transistors 44, 45, 46, 47, 48, 49 and diodes 50, 51, 52 and 53.Example of ACS underground engineering structures in automatic mode, when the methane concentration is 1% CH4(emergency mode).When the concentration of methane in underground engineering structures more threshold sensors (1% CH4) direct component (DC voltage) at the output of the stabilizer 27 disappears. Thus the photocurrent through consistently VK is OR 35) is closed. The voltage on the emitter disappears. Transistor switch block 6 of the display is closed (not shown) and a voltage of +12 V is supplied to the LEDs mimic the 10 ASCM indicating the presence of methane in the control zone.The same signal the Presence of methane delivered to the base of transistor 38 unit 7 approvals made under the scheme emitter repeater and transmits the signal to the input of the control unit feeders, switches off the pump and working lights and includes fans and emergency lighting. This happens as follows. The signal from the emitter of transistor 38 through diodes 40 and 41 is supplied to the bases of transistors 44 and 45. They appear, therefore, to the collectors of these transistors voltage close to "0". Voltage to the feeders 16 and 17 is not supplied and there is a power working lighting and pumps. The signal from the emitter of transistor 38, passed through the diodes 42 and 43, is supplied to the bases of transistors 46 and 48, which open and close the transistors 47 and 49 (keys-inverters and diodes 52 and 53, the voltage will turn on emergency lighting and through the feeder 19 and the control panel 22 to switch on the fan 26.In addition, the emitter of the transistor 38 of the block matching 7 signal will go to the block 8 signaling, dicale status feeders 15, 16, 17 and 18 and through the key elements (not shown) transmit the signals to the LEDs 14 mnemonic AUTO.The methane sensors, transducers parameters, blocks stabilization and siren produced NGOs "Krasny Metallist" ,Konotop, Ukraine. AUTOMATIC CONTROL SYSTEM of UNDERGROUND ENGINEERING STRUCTURES containing methane sensors connected to the signal converters, power supplies, device logical processing of the signal, the alarm unit and the mnemonic, characterized in that it introduced the stabilization device and the selection signal, the display unit and unit coordination, forming a remote monitoring and alarm methane content, the remote Supervisory control equipment, the device logical processing of the signal is made of two parts, one of which is made of series-connected receiver optocoupler LEDs and transistor, and the other of the diodes, and the device stabilization and extraction of signal from each process area contains three parallel stabilization unit and a selection signal, each of which is made of a stabilizer connected to one of the diagonals of the diode rectifier bridge, the other is ilization device stabilization and the selection signal is connected to the power supply, and the entrance of the stabilization device and the selection signal is connected to the device logical processing of the signal through the display unit is connected to the mnemonic control and alarm methane, and through the power of negotiation to the alarm unit, and the remote Supervisory control of process equipment contains the logic unit and control feeders connected to the power supply unit and the display unit feeders, the latter is connected with a mnemonic process equipment, and the output of block matching remote control and alarm methane connected to the logic unit and control feeders remote Supervisory control equipment.
FIELD: mining industry, particularly methods or devices for drawing-off gases.
SUBSTANCE: method involves taking methane concentration in characteristic mining face points by sensors, wherein the characteristic points are selected in accordance with requirements fixed by Safety Rules; recording and processing methane sensor readings in central station; transmitting the methane sensor readings to signal receiving block; performing primary processing of the received signals and de-energizing bottomhole mechanisms; inputting safety factor, namely maximal value of gaseous methane content, which is less than critical methane concentration value and takes into consideration response time of methane emission control system; automatically forming commands aimed at cutter-loader output regulation by reducing or increasing speed of cutter-loader feeding if one sensor detects methane concentration reduction or growth from zero to maximal value after the received signal processing to provide safe operation in the mining face until critical methane concentration is reached in mining face atmosphere without bottomhole mechanism de-energizing. If above methane emission control system can not provide maximal methane content in mine face atmosphere the system will de-energize all bottomhole mechanisms with taking into consideration of response time of methane emission control system.
EFFECT: prevention of critical explosive methane concentration in mine without bottomhole mechanism operation stoppage.
FIELD: alarm sensors for use in underground mines.
SUBSTANCE: sensor contains piezoelectric generator of sound signal with two input contacts for feeding powering voltage of certain frequency and circuit assembly, connected to power source for generation of powering voltage. Piezo-electric generator of sound signal has additional output contact, which, when powering voltage is fed onto sound signal generator from circuit assembly, generates response voltage signal, which is a value appropriate for force of sound created by alarm sensor.
EFFECT: creation of sensor which may be used at resonance frequency, therefore, at maximally possible loudness of sound signal, and which makes it possible to transfer confirmation signal about successful output of sound alarm to control system of portable collapsible lining frame.
12 cl, 3 dwg
FIELD: electrical engineering.
SUBSTANCE: invention relates to devices for determining exceedance of methane safe concentration level, which can be used in mining and chemical industry in air and gas control systems. The device has a power supply for the sensor, unit for forced ignition of the gas mixture, comprising a voltage converter and an igniter, blast-proof combustion chamber, comprising an insulating plug and an inspection window, device for recording ignition of the gas mixture, comprising a photodetector and a unit for processing explosion information, unit for generating a signal from the sensor to the main cable line and into local signalling presence of a lower explosive limit of gas for the given sensor. The device also contains a unit for generating voltage in form of regular pulse sequences for forced ignition, a heater and a unit for regulating its temperature. One output of the voltage converter is connected to the input of the unit for generating voltage, and the other output is connected to the input of the unit for regulating temperature of the heater.
EFFECT: increased efficiency of control.
SUBSTANCE: group of inventions is related to system and methods for control of getting machine along bottomhole in underground mine tunnel, and also to mining face for method realisation. Method includes measurement of gas concentration and depending on measurement results, generation of warning signal. At the same time volume of production achieved by getting machine is additionally established. In case of insufficient correlation between volume of production and gas concentration, a warning signal is generated.
EFFECT: invention provides for possibility to minimise danger of methane gas explosion in mining face, to establish fact of gas sensor failure and/or manipulation with it.
26 cl, 3 dwg
FIELD: physics; communication.
SUBSTANCE: invention relates to radio engineering and can be used in a shaft to carry out rescue operations by mine rescue brigades. The shaft emergency communication system based on a wireless sensor network has on the surface of the shaft a control unit of a control centre with a telephone set and a telephone line which links the control unit with underground users. In the underground mine, the system has a wireless sensor network consisting of computing-switching radio devices - relays and a terminal device which is connected to the telephone line through a device for galvanic separation of circuits and an adapter. Mobile user devices are placed in separate illumination devices of the shaft and are connected to the nearest relays of the sensor network over a radio telephone channel.
EFFECT: invention enables establishment of a voice (telephone) radio channel for communication between underground users and with the surface of the shaft, increases the range of the established communication, increases reliability of underground radio communication.
SUBSTANCE: system includes the following which is installed in mine working: sensors of monitoring mine environment background (temperature, gas content, methane, dust, displacement of beds, etc.), recording of location and direction of movement of mine workers, movable video and infrared cameras, device for detection and formation of control commands, terminals of operators performing the monitoring of mine environment background and location of mine workers and control of the system operation. Mine workers are provided with transponders and individual pendants. Transponders are intended to exchange code radio signals in request-reply mode with transmitting-receiving devices, which are located along mine working, which allows performing the monitoring of location and movement of mine workers. Individual pendants send individual light code signals in acoustic, infrared and radio ranges of waves; at that, sent codes are identified with personality of mine worker. Device for detection and formation of control commands, as well as database to it are implemented in computer. Database includes the data on mine working plan, location of sensors, coordinates of request-reply devices, individual codes of transponders and owners identified as per them, threshold parametres of emergency situations, modulation parametres of individual light code signals of pendants. Besides in mine working there arranged are movable video and infrared cameras by means of which the situation can be controlled, as well as devices for activation of individual pendants and detection of individual light code signals sent with pendants in acoustic, radio and infrared wave ranges. All sensors, transmitting-receiving devices, detection, activation devices of individual pendants, movable video and infrared cameras are connected to device of detection and formation of control commands.
EFFECT: monitoring of the well background, just-in-time warning of workers about threats, evacuation control, search of those who are suffering distress.
10 cl, 2 dwg
SUBSTANCE: casing of the device with electric drive, which is used in the conditions in which there is danger of explosions, includes loud-speaker connected to electric part. At that, loud-speaker and electric part except electric connection are fully enclosed with casing consisting of gas-permeable and noncombustible material. Invention also refers to the casing of the device with electric drive, which contains light source, as well as the method for obtaining porous material for these casings.
EFFECT: release of pressure drop in case of explosion, owing to the casing itself, capability of discharging the mixture of ignited gases through casing walls to the outside; prevention of the medium ignition outside the casing, cooling action of the casing material on evolved gases, and capability of acoustic waves to penetrate to the outside without attenuation.
14 cl, 3 dwg
SUBSTANCE: proposed system consists of single stationary reader located at the route start, mobile recording devices arranged on moving objects, and mark point radio beacons arranged at particular route points. Note here that stationary readers and mobile recorders are equipped with limited-range FR-signal transceivers, whilea mark point beacons are provided with limited-range transmitters transmitting in intermittent mode the data containing unique number identifying location of mark point beacon. Moving object coming into controlled zone and equipped with aforesaid recorder receives signal from relevant radio beacons to fix their unique numbers and registration time. Received data is transmitted by mobile recorder after reception of code combination of request intermittently irradiated by stationary reader transceiver.
EFFECT: expanded operating performances.
7 cl, 1 dwg
SUBSTANCE: in each compact group of employees there is a smoking employee, equipped with an individual smoking pipe having a code key to open protective folds of an individual lighter with a heating element. The lighter has a button for ignition only with protective folds open that are opened by means of a code key of an individual smoking pipe, and also a locking mechanism with a bimetal element. The locking mechanism is designed to remove an individual lighter with a heating element from an individual smoking pipe only after cooling of the latter. Besides, the individual lighter with a heating element has a chamber made from a close-meshed net made as capable of transmission of atmosphere with combustible gas into the chamber connected with the individual smoking pipe.
EFFECT: simplified monitoring of methane content in that mine, where miners are currently located.
SUBSTANCE: automated communication system comprises a control panel with a PC and software, a station of information collection and transfer, M underground wire communication channels. At the same time each communication channels includes a safety rope, the first and second transceivers, arranged at the ends of the safety rope, every of which comprises an antenna made in the form of a metal rod coated with a layer of dielectric. The safety rope is made in the form of woven nylon threads and a multi-strand metal conductor coated with a layer of dielectric. Transceivers may be galvanically connected to a multi-strand metal conductor of the safety rope, or may not have galvanic contact with a multi-strand metal conductor.
EFFECT: higher safety of salvage operations in emergency conditions.