CN206133843U - Mine external fire monitors alarm system - Google Patents
Mine external fire monitors alarm system Download PDFInfo
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- CN206133843U CN206133843U CN201621143482.7U CN201621143482U CN206133843U CN 206133843 U CN206133843 U CN 206133843U CN 201621143482 U CN201621143482 U CN 201621143482U CN 206133843 U CN206133843 U CN 206133843U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 44
- 238000004891 communication Methods 0.000 claims abstract description 17
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- 239000007789 gas Substances 0.000 claims description 65
- 238000000034 method Methods 0.000 claims description 20
- 239000004065 semiconductor Substances 0.000 claims description 20
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- 238000005259 measurement Methods 0.000 claims description 5
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- 238000001514 detection method Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 6
- 230000010365 information processing Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
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- 238000005516 engineering process Methods 0.000 description 5
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- 239000000779 smoke Substances 0.000 description 2
- 238000001931 thermography Methods 0.000 description 2
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 244000249914 Hemigraphis reptans Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000004458 analytical method Methods 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The utility model discloses a mine external fire monitors alarm system. Mine external fire has characteristics such as the discovery is difficult, the development is swift and violent, and traditional external fire alarm system reaction time is long, and easy the emergence is misrepresented deliberately and is failed to report, makes the intensity of a fire in time controlled, leads to the fact a large amount of casualtiess. The system mainly includes information processing server, alarm device, communications network, gas strength remote sensing device, flame monitoring device etc, the characteristics such as gas strength of the accessible gas strength remote sensing device of system in to the monitoring area environment is monitored to through sending fire alarm to monitoring data integrated analysis such as flames. The system can accurate monitoring external fire characteristic gas, has improved alarm accuracy greatly, provides important guarantee for coal mine safe production.
Description
Technical field
This utility model is related to a kind of mine exogenous fire monitor and alarm system, and the system is related to sensor technology, laser
The fields such as technology, spectral analysis technique, signal processing technology.
Background technology
Coal is China's main energy sources, accounts for primary energy 70%.Coal industry is high risk industries, gas, fire, top
The accidents such as plate, coal dust annoying Safety of Coal Mine Production.Coal mine fire includes breeding fire and exogenous fire, mine exopathogenic factor fire
Calamity has the features such as finding swift and violent difficult, development, fire extinguishing and give first aid to difficult.Fire once occurs, if the intensity of a fire can not be obtained in time
Control, involving scope will expand rapidly, cause a tremendous loss of lives, therefore find that mine exogenous fire has important meaning in time
Justice.At present the monitoring method of mine exogenous fire mainly adopts temperature monitoring and smoke monitoring etc., smoke monitoring to there is reaction slowly,
The shortcomings of rate of false alarm and high rate of failing to report；Temperature monitoring method relatively advanced at present is monitored using fiber optic Distributed Temperature, but light
Fibre there are problems that it is fragile, install it is complex,.Therefore new mine exogenous fire monitoring alarm system is needed
System, to meet Safety of Coal Mine Production requirement.
Utility model content
This utility model purpose is to provide a kind of mine exogenous fire monitor and alarm system, can remote sensing monitoring it is more remote
In the range of roadway fire cause flame, temperature data change and lane space region in fire symbolic gas CO, CO2、
O2、CH4And NOXConcentration change, carry out fire alarm by analyzing the Monitoring Data that obtains.The system mainly includes gas
Concentration remote-sensing device, device for detecting temperature, flame monitoring apparatus, netscape messaging server Netscape, alarm device and communication network；Gas
Concentration remote-sensing device mainly includes generating laser, laser pickoff, control process unit and display unit；Gas concentration remote sensing
Device can carry out remote sensing monitoring using open air chamber to multiple gases concentration in environment；Gas concentration sensoring has laser
Distance measurement function；Netscape messaging server Netscape is responsible for processing gas concentration data, ambient temperature data and flame monitoring data, according to number
Sound and light alarm is sent by alarm unit according to result, fire alarm information is sent by communication network.
1. system is further included described in：The generating laser employing of the gas concentration sensoring of system can be automatically adjusted
The generating laser of the direction of the launch, control process unit is carried out not with scanning monitoring mode control laser transmitter projects direction
Equidirectional gas concentration and distance monitoring.
2. system is further included described in：The generating laser of the gas concentration sensoring of system is produced by lasing light emitter
Laser, lasing light emitter can produce the laser for detecting multiple gases.
3. system is further included described in：The generating laser of the gas concentration sensoring of system is produced by lasing light emitter
Laser, generating laser includes multiple lasing light emitters, and each lasing light emitter is used to produce a kind of laser of gas of detection.
4. system is further included described in：The generating laser of the gas concentration sensoring of system is partly led using tunable
Body laser；The controlled processing unit control of semiconductor laser with tunable, sends the laser of different wave length；Laser pickoff connects
The laser that receipts are reflected, by laser signal the signal of telecommunication is converted to, and the control process cell processing signal of telecommunication obtains corresponding gas
Concentration.
5. system is further included described in：The generating laser of the gas concentration sensoring of system can send CO, CO2、
O2、CH4And NOXThe laser of the different wave length of molecule absorption peak value.
6. system is further included described in：The equipment being arranged in system in explosion environment is explosion-proof type equipment.
7. system is further included described in：The flame monitoring apparatus of system include video surveillance devices.
8. system is further included described in：The flame monitoring apparatus of system include infrared observation equipment.
9. system is further included described in：The flame monitoring apparatus of system include ultraviolet monitor function equipment.
10. system is further included described in：The device for detecting temperature of system includes Fibre Optical Sensor, temperature sensor, red
Outer thermal imaging system, infrared thermoelectricity are released or infrared radiation thermometer.
Description of the drawings
Fig. 1 mine exogenous fire monitor and alarm system composition schematic diagrams.
Fig. 2 mine exogenous fire monitor and alarm system workflow diagrams.
The principle schematic of Fig. 3 gas concentration sensorings embodiment 1.
The principle schematic of Fig. 4 gas concentration sensorings embodiment 2.
The collimator arrangement architecture schematic diagram of Fig. 5 gas concentration sensorings embodiment 2.
Fig. 6 gas concentration sensoring workflow diagrams.
Specific embodiment
Fig. 1 is mine exogenous fire monitor and alarm system composition schematic diagram, and the system composition includes：
1. netscape messaging server Netscape (1)：Be responsible for each sensing data is stored, and monitor gas concentration data, temperature
The data variation of degrees of data and flame monitoring data, by analytical data change fire alarm signal is sent.
2. alarm device (2)：Sound and light alarm is sent by netscape messaging server Netscape control, is passed through with netscape messaging server Netscape
RS232 interface connection communications.
3. monitoring device (3)：Data query and production monitoring service are provided to produce management personnel, by information processing services
Device provides field data, shows with alarm and GIS service function.
4. core switch (4)：It is responsible for management and the data exchange of all equipment for accessing mining Ethernet, hands over down-hole
(5) are changed planes by optical fiber connection.Communication network device includes core switch (4), down-hole switch (5) and substation (6).
5. down-hole switch (5)：The access of responsible data substation and data exchange, by optical fiber and each down-hole switch with
Looped network mode connects.
6. substation (6)：It is responsible for access and the data exchange of each monitoring device, with network switch function, hands over down-hole
Change planes and connected by optical fiber；With RS485 interfaces.
7. gas concentration monitoring device (7)：Using gas concentration sensoring, using open air chamber, can be to wrapping in environment
Include CO, CO2、O2、CH4And NOXMultiple gases concentration carry out remote sensing monitoring, with laser ranging function, with three dimensions area
Domain gas concentration monitoring function.
8. device for detecting temperature (8)：Fibre Optical Sensor, radio temperature sensor, thermal infrared imager, infrared thermoelectricity can be adopted
Release or infrared radiation thermometer in any one equipment.Fibre Optical Sensor can adopt U.S. DTS Sequence distribution formula Fibre Optical Sensors, lead to
Cross network interface connection substation；Radio temperature sensor can adopt wireless sensor network equipment, star-like connected mode, by coordinating
Device node device connects substation (6) by RS485 interfaces；Thermal infrared imager can adopt the Haikang DS- with intelligent recognition function
2CD8313PF-E25 infrared thermal imaging web cameras, directly connect substation (6) by network interface；Can adopt digital red
Outer thermoelectricity releases alarm, and by RS485 interface modules substation (6) is connected；Infrared radiation thermometer can adopt non-contact infrared temperature
Instrument DT8012B, by RS485 interface modules substation (6) is connected.
9. flame monitoring apparatus (9)：For monitoring the flame of fire generation, camera acquisition video image can be passed through, by
Video image identification equipment recognizes flame, can adopt Chengdu century Chaoyang Science and Technology Ltd. intelligent image type fire detector,
Substation (6) is connected by network interface；Infrared or ultraviolet monitoring equipment, such as U.S.'s enlightening wound X3301 infra red flames prison may also be employed
Instrument, X2200 ultraviolet flame monitors are surveyed, substation (6) is connected by RS485 interfaces.
Fig. 2 is mine exogenous fire monitor and alarm system workflow diagram：
1. (201) each monitoring device passes the gas concentration data for collecting, ambient temperature data, wind direction Monitoring Data
Give substation (6).
2. each Monitoring Data that (202) substation (6) is received, forwards the data to down-hole switch (5).
3. the Monitoring Data that data substation is transmitted is transferred to the core switch on well for (203) down-hole switch (5)
(4)。
4. (204) core switch (4) transfers data to netscape messaging server Netscape.
5. (205) netscape messaging server Netscape is stored to each sensing data, and analytical data changes, such as data variation
Meet alert and if then alarm signal is sent by RS232 Interface Controller alarm devices (2) and monitoring device (3).Data exception
Including CO, CO in specific monitored area2、NOXConcentration lift-off value exceedes given threshold, O in setting time interval2、CH4Setting
The interior concentration decreasing value in interval of fixing time exceedes given threshold (every kind of gas concentration abnormal as an independent data exception)；Temperature
Degrees of data lift-off value in setting time interval exceedes given threshold；Monitor flame；When data exception item quantity exceedes setting
Threshold value, then be judged to fire.Each monitoring threshold sets or is manually set and obtains according to site environment measurement.
6. (206) alarm device (2) receive information processing server (1) is believed by the controlling alarm that RS232 interfaces are transmitted
Number, send sound and light alarm.
7. the alarm signal that (207) monitoring device (3) receive information processing server (1) is transmitted by core switch (4)
Number, fire location is shown by computer display screen.
Fig. 3 for gas concentration sensoring the principle schematic of specific embodiment 1, mainly including generating laser, swash
Optical receiver, control process unit and display unit.Control process unit is responsible for controlling laser transmitter projects laser；Process and swash
The signal that optical receiver is returned obtains gas concentration and reverberation distance；Control communication interface is communicated；Control display screen shows
Show；Receive the operation signal of button and processed accordingly.Core processor (301), signal generator (302), phaselocked loop
Amplifier (303), analog-digital converter (304), digital phase discriminator (305) and other auxiliary elements；Generating laser is responsible for range finding
And the transmitting of the laser signal of gas-monitoring, including lasing light emitter (306) and head (307)；Laser pickoff is responsible for receiving laser
Signal, by laser signal the signal of telecommunication is converted to, and concrete composition includes receiving lens (308), darkroom (309) and photodetector
(310)；Communication interface (311) is for Monitoring Data transmission；Display unit is responsible for gas concentration and is shown with working state of device data
The main element for showing is display screen (312).Main element includes：
1. core processor (301), using Samsung S3C2440 processors, S3C2440 is based on the micro- of ARM920T kernels
Processor；S3C2440 has 3 UART interfaces, 2 SPI interfaces, 2 USB interface, 1 IIC-BUS interface；Using embedded
Linux platform realizes that drive control communicates.
2. signal generator (302), are responsible for producing the tune monitored for gas concentration for controlling laser transmitter projects
Sawtooth wave control signal processed and the reference signal of signal analysis, including multiple portions such as DDS generators, filter circuit, adder
Point.
3. phaselocked loop amplifier (303), using two modules, be each responsible for extracting gas absorption signal once, it is secondary
Harmonic wave, noise is suppressed using the orthogonal property of signal and noise, improves signal to noise ratio, can mutually be amplified using LIA-MV-150 locks
Device module.
4. analog-digital converter (304), be responsible for by lock-in amplifier demodulate once, secondary analogue signal be converted into numeral
Signal, can adopt 16 multi-channel a/d converter chips of ADS8364, with 6 fully differential input channels.
5. digital phase discriminator (305), responsible to process the distance measuring signal for receiving, and will receive signal and enters with control signal is sent
Row is compared, and obtains the phase contrast between signal, and sends phase contrast to core processor by interface with data mode.
6. lasing light emitter (306), using semiconductor laser with tunable, can send the laser of multi-wavelength, for measurement not
Same gas concentration, can be integrated using IBSG-TO5TEC series semiconductor laser with tunable, the semiconductor laser with tunable
TEC current temperatures control semiconductor element, for temperature adjustment, stabilizing wave lenth of laser and power.
7. head (307), for controlling the direction of the launch of semiconductor laser with tunable (311) and connecing for laser pickoff
Debit to, can by the external MAX485 chips in core processor SPI communication port by cradle head control protocol integrated test system head move, cloud
Platform can rotated both horizontally and vertically using video camera standard supervision head.
8. receiving lens (308), are responsible for will reflect back into the laser for coming and assemble to photodetector.
9. darkroom (309), using closed cylindrical structure, inwall applies light absorbent.
10. photodetector (310), are responsible for for the laser signal for receiving being converted to the signal of telecommunication, including light receiving element
And amplifying circuit；Light receiving element adopts InGaAs PIN photodiode, amplifying circuit main element to adopt AD603, in parallel
Two voltage followers connect respectively phaselocked loop amplifier (307) and digital phase discriminator (309).
11. communication interfaces (311), including wired communication interface and wireless communication interface, the main core of wired communication interface
Piece adopts the singlechip Ethernet mac controller that DM9000, DM9000 are completely integrated, and the procotol on upper strata is by core processing
The built-in Linux of device drives and supports.DM9000 supports 10/100M self adaptations, supports the supply voltage of 3.3V and 5V.DM9000 leads to
Network isolation transformer interface chip YL18-1080S connection RJ45 network interfaces are crossed, realizes leading to the physical connection of network
Letter；Wireless communication interface drives in system, USB port and Wifi wireless network cards drives using the Wifi wireless network cards of standard USB interface
Dynamic program realizes network communication services under supporting.
12. display screens (312), using 3.5 cun of color LCD screens, resolution 480x800, carry display and drive journey by Linux
Sequence drives.
13. buttons (313), for gas concentration sensoring parameter and function setting and control, including determine, return,
Upper shifting, the function key such as move down.
Fig. 4 is the principle schematic of specific embodiment 2 of gas concentration sensoring.Embodiment 2 and embodiment 1
One difference is, using the multiple different semiconductor laser with tunable controlled by multi-channel data selector (314), to be used for
The laser of transmitting different wave length, laser need to be launched by splicer (315) and light path selector and collimator；Another area
It is not the no head of embodiment 2, and adopts 8 collimators, each collimator points to different directions, 8 collimators
(317) light selector switch (316) is connected, light selector switch (316) is sent splicer (315) by the control of core processor (301)
Laser carry out routing, by laser from select certain road collimator (317) send, so as to realize time division multiplexed be multiplexed.It is involved
Element it is as follows：
1. multi-channel data selector (314), are responsible between signal generator (305) and multichannel semiconductor laser with tunable
Gating, can adopt CD4051BC bilateral analog switch, by core processor (302) 3 I/O mouths control gating, 1 I/O
Mouth controlling switch；COMMON IN/OUT mouths are connected with signal generator (305), and 4 IN/OUT mouths connect respectively different adjustable
Humorous semiconductor laser (311).
2. lasing light emitter (306), using semiconductor laser with tunable, can send monitored gas absorption peak wavelength
Laser, gas with various can adopt SAF117XS Series Bellevilles tunable half using the semiconductor laser with tunable of different wave length
Conductor semiconductor laser with tunable, the integrated TEC current temperatures of the semiconductor laser with tunable control semiconductor element.
3. splicer (315), a branch of by the Laser synthesizing of different wave length using optical fiber wave multiplexer, this equipment each tunable half
Conductor laser adopts time division emission, so the outfan at most also laser output of only one of which wavelength at any time.
4. smooth selector switch (316) can adopt Vispace 1000OSS light routing devices, be passed through by core processor (302)
Serial ports control routing connection.
5. collimator (317), the light beam for controlling laser orientation transmitting and being formed in space, are swashed using FC Interface Fibers
Light collimating lenses.
Fig. 5 is the collimator arrangement architecture schematic diagram of gas concentration sensoring embodiment 2.
Gas concentration sensoring workflow is as shown in Figure 6：
1. (501), core processor (301) start by set date once monitors scanning process.
2. (502), laser ranging is carried out first, and core processor (301) control signal generator (302) is producing 10M just
String ripple signal.
3. (503), sine wave signal drives lasing light emitter (306) to send the laser for detection range.Embodiment 1 is sinusoidal
Ripple signal directly drives semiconductor laser with tunable, and the sine wave signal of embodiment 2 need to be through multi-channel data selector (314)
Behind selection path, then corresponding semiconductor laser with tunable is driven, then through splicer (315), light path selector switch (316),
Laser is launched by the collimator (317) of respective angles.
4. (504), range laser runs into reverberation fraction of laser light and is reflected, and receiving lens (308) collect what is reflected
Laser is assembled to photodetector (310), and the laser signal for receiving is converted to the signal of telecommunication by photodetector.
5. (505), digital phase discriminator (305) is processed after the process such as the range finding signal of telecommunication for receiving, amplified, mixing, is obtained
Obtain and send the phase contrast between control signal, phase contrast sends core processor to data mode by interface.
6. (506), core processor (301) receiving phase difference data, obtains between device and reverberation according to phase contrast
Distance.
7. (507), core processor (301) control signal generator sends the sawtooth signal of 50Hz and with 50kHz's
Sinusoidal signal is modulated.
8. (508), modulated sawtooth signal drives lasing light emitter (306) to send inswept a certain GAS ABSORPTION peak value ripple
The laser of long scope.The sine wave signal of embodiment 1 directly drives semiconductor laser with tunable；The sine wave of embodiment 2 is believed
Number after multi-channel data selector (123) selects corresponding gas passage, then corresponding tunable semiconductor laser need to be driven
Device, then through splicer (315), light path selector switch (316), laser is launched by corresponding collimator (317).
9. (509), laser runs into reverberation fraction of laser light and is reflected through the air of tested region, receiving lens (308)
The laser that collection is reflected is assembled to photodetector (310), and the laser signal for receiving is converted to electricity by photodetector
Signal.
10. (510), phaselocked loop amplifier (303) receives the signal of telecommunication, and timesharing receives the modulation letter that signal generator is provided
Number and modulated signal frequency-doubled signal, Jing process extract timesharing obtain once, second harmonic signal.
11. (511), analog-digital converter (304) will once, second harmonic signal digitized.
12. (512), core processor (301) is received once, the data of second harmonic signal, and process obtains institute's Jing light paths
On the concentration for surveying gas.
13. (513), core processor control converted gas monitoring repeats the gas concentration measurement mistake of (507) to (512)
Journey monitoring is until complete all gas concentration monitor.
14. (514), embodiment 1：Core processor (301) control head (307) drives lasing light emitter (306) and laser
Receptor rotates an angle；Embodiment 2：Core processor (301) control multi-channel data selector (121) selects lasing light emitter
(306) path, then corresponding lasing light emitter is driven, then through splicer (315), light path selector switch (316), by another angle
Collimator (317) launches laser.The process until complete for repeating (502) to (513) range finding and gas concentration monitoring owns
The monitoring of set angle.
15. (515), core processor process (301) institute angled upper acquisition distance and each gas concentration, obtain difference
Each gas concentration data of distance areas and three-dimensional spatial area
16. (516), core processor processes (301) and uploads data by communication interface (311), and by display screen
(312) video data.
Claims (11)
1. a kind of mine exogenous fire monitor and alarm system, it is characterised in that：System mainly includes gas concentration sensoring, temperature
Degree monitoring device, flame monitoring apparatus, netscape messaging server Netscape, alarm device and communication network；Gas concentration sensoring master
To include generating laser, laser pickoff, control process unit and display unit；Gas concentration sensoring is using open gas
Room, can carry out remote sensing monitoring to multiple gases concentration in environment；Gas concentration sensoring has laser ranging function；At information
Reason server is responsible for processing gas concentration data, ambient temperature data and flame monitoring data, is passed through according to data processed result
Alarm unit sends sound and light alarm, and by communication network fire alarm information is sent.
2. monitor and alarm system as claimed in claim 1, it is characterised in that：The laser of the gas concentration sensoring of system is sent out
Emitter employing can automatically adjust the generating laser of the direction of the launch, and control process unit controls Laser emission to scan monitoring mode
The device direction of the launch, carries out different directions gas concentration and distance monitoring.
3. monitor and alarm system as claimed in claim 1, it is characterised in that：The laser of the gas concentration sensoring of system is sent out
Emitter produces laser by lasing light emitter, and lasing light emitter can produce the laser for detecting multiple gases.
4. monitor and alarm system as claimed in claim 1, it is characterised in that：The laser of the gas concentration sensoring of system is sent out
Emitter produces laser by lasing light emitter, and generating laser includes multiple lasing light emitters, and each lasing light emitter is used to produce a kind of gas of detection
The laser of body.
5. monitor and alarm system as claimed in claim 1, it is characterised in that：The laser of the gas concentration sensoring of system is sent out
Emitter lasing light emitter adopts semiconductor laser with tunable；The controlled processing unit control of semiconductor laser with tunable, sends not
The laser of co-wavelength；Laser pickoff receives the laser for reflecting, and laser signal is converted to into the signal of telecommunication, control process unit
The signal of telecommunication is processed, corresponding gas concentration is obtained.
6. monitor and alarm system as claimed in claim 1, it is characterised in that：The laser of the gas concentration sensoring of system is sent out
Emitter can send CO, CO2、O2、CH4And NOXThe laser of the different wave length of molecule absorption peak value.
7. monitor and alarm system as claimed in claim 1, it is characterised in that：The equipment being arranged in system in explosion environment is equal
For explosion-proof type equipment.
8. monitor and alarm system as claimed in claim 1, it is characterised in that：The flame monitoring apparatus of system include video monitor
Equipment.
9. monitor and alarm system as claimed in claim 1, it is characterised in that：The flame monitoring apparatus of system are supervised including infrared ray
Measurement equipment.
10. monitor and alarm system as claimed in claim 1, it is characterised in that：The flame monitoring apparatus of system include ultraviolet
Monitoring device.
11. monitor and alarm systems as claimed in claim 1, it is characterised in that：The device for detecting temperature of system is passed including optical fiber
Sensor, temperature sensor, thermal infrared imager, infrared thermoelectricity are released or infrared radiation thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143482.7U CN206133843U (en) | 2016-10-21 | 2016-10-21 | Mine external fire monitors alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143482.7U CN206133843U (en) | 2016-10-21 | 2016-10-21 | Mine external fire monitors alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206133843U true CN206133843U (en) | 2017-04-26 |
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ID=58574231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621143482.7U Expired - Fee Related CN206133843U (en) | 2016-10-21 | 2016-10-21 | Mine external fire monitors alarm system |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448020A (en) * | 2016-10-21 | 2017-02-22 | 中国矿业大学(北京) | Exogenous mine fire monitoring alarm system |
| CN107884363A (en) * | 2017-10-17 | 2018-04-06 | 中国矿业大学(北京) | A kind of laser mine gas method of telemetering based on machine vision technique |
| CN114135328A (en) * | 2021-10-20 | 2022-03-04 | 中国计量大学 | One-key type mine fan intelligent air reversing system and method |
-
2016
- 2016-10-21 CN CN201621143482.7U patent/CN206133843U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448020A (en) * | 2016-10-21 | 2017-02-22 | 中国矿业大学(北京) | Exogenous mine fire monitoring alarm system |
| CN106448020B (en) * | 2016-10-21 | 2021-02-02 | 中国矿业大学(北京) | Mine external fire monitoring and alarming system |
| CN107884363A (en) * | 2017-10-17 | 2018-04-06 | 中国矿业大学(北京) | A kind of laser mine gas method of telemetering based on machine vision technique |
| CN107884363B (en) * | 2017-10-17 | 2023-10-24 | 中国矿业大学(北京) | Laser mine gas telemetry method based on machine vision technology |
| CN114135328A (en) * | 2021-10-20 | 2022-03-04 | 中国计量大学 | One-key type mine fan intelligent air reversing system and method |
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