CN110259516A - Coal mine gas dynamic patrolling management system - Google Patents
Coal mine gas dynamic patrolling management system Download PDFInfo
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- CN110259516A CN110259516A CN201910576020.6A CN201910576020A CN110259516A CN 110259516 A CN110259516 A CN 110259516A CN 201910576020 A CN201910576020 A CN 201910576020A CN 110259516 A CN110259516 A CN 110259516A
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- 239000003245 coal Substances 0.000 title claims abstract description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 152
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000007726 management method Methods 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 238000003860 storage Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000002123 temporal effect Effects 0.000 claims abstract description 12
- 230000003993 interaction Effects 0.000 claims abstract description 8
- 238000013500 data storage Methods 0.000 claims abstract description 6
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000005621 ferroelectricity Effects 0.000 claims description 6
- 238000007405 data analysis Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000004092 self-diagnosis Methods 0.000 claims description 4
- 238000013524 data verification Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 claims description 3
- 241001269238 Data Species 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 10
- 238000004880 explosion Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000001335 aliphatic alkanes Chemical group 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000013480 data collection Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses coal mine gas dynamic patrolling management system, the present invention includes data server, central station monitoring host computer, data transmission interface, electronic board, methane detection alarming instrument and address information card；Data server, for realizing data storage and distribution；Central station monitoring host computer is analyzed for realizing the acquisition of all data of system, data, man-machine interface interaction and early warning link；Data transmission interface, for completing the data interaction of underground equipment Yu central station monitoring host computer；Methane detection alarming instrument, for measuring the methane concentration of locating air environment, and read the data of address information card, realize to the address information of patrol point, temporal information, methane concentration, patrol officer's information acquisition and storage, and electronic board is uploaded to using a variety of wireless transmission methods, and it is uploaded to base station, while the position positioning for carrying the personnel of methane detection alarming instrument is realized by positioning substation；Address information card, for uploading itself address number.
Description
Technical field
The present invention relates to coal mine gas administrative skill fields, and in particular to coal mine gas dynamic patrolling management system.
Background technique
Coal is the main body of China's non-renewable energy, is the basis of national economy and social development.It is raw in China's non-renewable energy
It produces and accounts for 70% or so always in consumption structure.50% or more will be accounted for by predicting the year two thousand fifty, and therefore, coal is in quite long period
Interior will be the main energy sources in China.The natural conditions of China coal industry are more severe, coal mining enterprise in process of production, face
Face biggish safe pressure.Safety Work in Colliery is the most important thing of national industry security work.
In coal production, explosion accident takes place frequently, and extremely serious, Ge Gemei is wherein influenced brought by gas explosion accident
Mine extremely payes attention to the monitoring of gas density.Although major coal mine has been respectively mounted safety production monitoring system, it is equipped with advanced
Gas management equipment still cannot effectively contain the generation of gas explosion accident.By dividing more gas explosion accidents
Analysis learns that the work of administrative staff and security staff are not in place to be would be possible to cause gas accident.Therefore, reinforce mine gas prison
It surveys and the management of safety inspection, the working sense of responsibility of the enhancing special operation workers such as mine watt inspection person and safety inspector prevents gas
It checks, the missing inspection of safety inspection sky class, could effectively control mine gas explosion accident.
Gas main component is alkane, and wherein methane accounts for the overwhelming majority, and therefore, the detection that we are directed to gas at present is main
It is the detection for methane.Just at present, although being already installed with methane sensing in each important test point of underground coal mine
Device, but distribution is sparse, and test point is less, cannot cover all places of underground coal mine.Current methane portable instrument can be square
Just miner carries, and measures to the methane concentration of miner present position, can theoretically reduce safety accident.But due to
Present methane portable instrument only measures function, and ground staff cannot receive methane portable instrument entrained by each miner
Real-time methane concentration value, ground-based administrators can not effectively exercise supervision in real time to a watt inspection person, safety inspector etc. tracking, confirm
Whether it is checked in place by regulation route, time, place and number, finds and handle dangerous situation in time.Meanwhile underground
Hand-written billboard, since dust and humidity are larger, there are clerical errors for hand-written billboard, omit, the problems such as not seeing, these functions
Missing is extremely disadvantageous to the monitoring of safety in production.
Therefore, address information in coal mine gas patrol system in the prior art is unreliable, personnel positioning is not accurate, people
Member leave post, omit inspection, make up do not record in real time and data storage, transmission cannot realize simultaneously it is a large amount of and quick, safety
The problems such as property is poor, we provide a kind of coal mine gas dynamic patrolling management systems to solve the above problems.
Summary of the invention
The technical problems to be solved by the present invention are: the address information in coal mine gas patrol system in the prior art is not
Reliably, personnel positioning is not accurate, and personnel leave post, omit inspection, make up do not record in real time and data storage, transmission cannot
Realization simultaneously is a large amount of and quick, and safety difference problem, the present invention provides the coal mine gas dynamic night watching pipes to solve the above problems
Reason system.
The present invention is achieved through the following technical solutions:
Coal mine gas dynamic patrolling management system, including data server, central station monitoring host computer, data transmission interface,
Electronic board, methane detection alarming instrument and address information card；
Data server, the data as entire coal mine gas dynamic patrolling management system store core, for realizing number
According to storage and distribution；
Central station monitoring host computer, for realizing to all data of entire coal mine gas dynamic patrolling management system acquisition,
Data analysis, man-machine interface interaction and early warning linkage；
Data transmission interface, for completing the data interaction of underground equipment Yu central station monitoring host computer, wherein underground equipment
Including address information card, methane detection alarming instrument, electronic board, base station and positioning substation；
Electronic board for receiving the data of methane detection alarming instrument transmission, and is shown, while uploading the work of itself
Make state；
Methane detection alarming instrument for measuring the methane concentration of locating air environment, and reads the data of address information card,
Realize to the address information of patrol point, temporal information, methane concentration, patrol officer's information acquisition and storage, and using a variety of
Wireless transmission method is uploaded to electronic board, and is uploaded to base station, while being realized by positioning substation and carrying CH_4 detection report
The position positioning of the personnel of alert instrument；
Address information card for being read by methane detection alarming instrument, and uploads itself address number；
It further include wireless transport module, for realizing the data wireless transmission between above-mentioned each module.
Further, the address information card uses passive RFID wireless data transmission technology, realizes and believes underground address
The acquisition of breath, and address information is obtained using double data verification mode, it is ensured that the reliability of acquired address information；
In addition, realizing effective waterproof of passive label by the way of glue envelope.
Further, passive RFID wireless data transmission technology is wirelessly transferred using the contactless read-write of 13.56MHz
Mode, address information card do not need any battery power supply, reading of the methane detection alarming instrument to address release, the energy in 10cm
Realize that reliable address information is read, the long working life of address information card is completely without being bound by any external factor, reliability
It is higher.
Further, the methane detection alarming instrument uses active RFID transmission channel, is expanded using 2.4GHz frequency range order
Frequency technology and CRC check mode carry out determining for night watching personnel by the calculating and allocation algorithm of more people's location data timeslices
The reliable wireless data transmission under strong interference environment is realized, it is ensured that the accuracy of night watching personnel positioning data in position.
Wherein, the calculating of more people's location data timeslices and the detailed process of allocation algorithm are as follows:
Each methane detection alarming instrument single hair is arranged in step (1) by the way of Fixed Time Interval+random number
Penetrate interval time；
Step (2) waits emission duration timing to arrive；
Step (3) generates random number between 0~200；
Step (4) starts the transmission of this personnel positioning data；
Step (5), personnel positioning data are sent completely, and are returned to step (2) circulation and are executed next round personnel positioning data
It sends.
Further, further include ferroelectricity and Flash dual chip memory module, realize for methane detection alarming instrument to night watching
The storage of the address information, temporal information, methane concentration, patrol officer's information of point is realized when methane detection alarming instrument is not in nothing
When in the wireless signal coverage area of line transmission module, data collected are stored in time, is first stored in ferroelectricity by item number
Storage chip until the memory space of FeRAM memory chip has been expired, then dumps in Flash memory chip, realizes that low capacity is pressed
Byte quick storage, effective combination with the storage of large capacity piecemeal, had not only met the storage effect of the data of large capacity, but also reach
The purpose that real-time data collection is quickly handled.
Wherein: wireless transport module utilizes underground coal mine for realizing the data wireless transmission between above-mentioned each module
The base station WIFI, the WIFI transmission channel of methane detection alarming instrument design are realized using the ICP/IP protocol of standard to patrol point
The associated data upload of address information, temporal information, methane concentration, patrol officer's information.
Further, the methane detection alarming instrument, the electronic board are designed with selftest module, when any component goes out
Existing failure, carries out breakdown judge and instruction, and fault message is uploaded to the central station monitoring host computer, realizes whole system
Self diagnosis.
The present invention has the advantage that and the utility model has the advantages that
1, the present invention utilizes the contactless read-write wireless transmission method of 13.56MHz, and address information card does not need any electricity
Pond power supply, reading of the methane detection alarming instrument to address release are able to achieve reliable address information in 10cm and read, address
For the long working life of release completely without being bound by any external factor, reliability is higher；And it is based on RFID technique, utilizes mine
The wireless transfer channel of well personnel location system is determined the location of underground patrol officer information and uploads in time
Ground central station monitoring host computer；
2, the present invention uses 2.4GHz frequency range order spread spectrum and CRC check mode, when by more people's location datas
Between piece calculating and allocation algorithm, prevent from conflicting, realize strong interference environment under reliable wireless data transmission, it is ensured that night watching personnel
The accuracy of location data；
3, the present invention for methane detection alarming instrument not in WIFI wireless signal coverage area when, need to be to number collected
According to being stored in time, using ferroelectricity and Flash dual chip scheme, to data collected, ferroelectricity storage is first stored in by item number
Chip, etc. FeRAM memory chips memory space it is full after, then dump in Flash memory chip, realize that low capacity is quick by byte
Storage, effective combination with the storage of large capacity piecemeal, had not only met the storage effect of the data of large capacity, but also reached and adopted in real time
Collect the purpose of data quick-processing；
4, the equipment such as methane detection alarming instrument of the present invention, electronic board all design the automatic detection module having to itself, when
Any component breaks down, and the machine can carry out breakdown judge and instruction, while fault message can also be uploaded to central station prison
Host is controlled, realizes the self diagnosis of whole system.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the block architecture diagram of coal mine gas dynamic patrolling management system of the present invention.
Fig. 2 is calculating and the allocation algorithm flow chart of more people's location data timeslices of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1 and Figure 2, coal mine gas dynamic patrolling management system, including data server, central station monitoring host computer,
Data transmission interface, electronic board, methane detection alarming instrument and address information card；Data server, as entire coal mine gas
The data of dynamic patrolling management system store core, for realizing data storage and distribution；Central station monitoring host computer, for realizing
It links to the acquisition of all data of entire coal mine gas dynamic patrolling management system, data analysis, man-machine interface interaction and early warning,
By the displaying and analysis of the correlation forms such as curve or histogram being carried out, in conjunction with preset alarm to associated data collected
Or control condition, the real-time analysis of dynamic methane data is completed, and realize the functions such as linkage control, alarm；Data transmission interface,
For completing the data interaction of underground equipment Yu central station monitoring host computer, wherein underground equipment includes address information card, methane inspection
Survey alarm, electronic board, base station and positioning substation；Electronic board, for receiving the data of methane detection alarming instrument transmission, and
It is shown, while uploading the working condition of itself；Methane detection alarming instrument, the methane for measuring locating air environment are dense
Degree, and the data of address information card are read, it realizes and the address information of patrol point, temporal information, methane concentration, patrol officer is believed
The acquisition and storage of breath, and it is uploaded to electronic board using a variety of wireless transmission methods, and be uploaded to base station, while by fixed
Position substation realizes the position positioning for carrying the personnel of methane detection alarming instrument；Address information card, for by methane detection alarming instrument
It reads, and uploads the address number of itself；Further include wireless transport module, is wirelessly passed for realizing the data between above-mentioned each module
It is defeated.
Address information card of the present invention by being arranged in underground monitoring point is uploaded for obtaining reliable underground address information
Spontaneous address number, is then read by methane detection alarming instrument, and the first of locating air environment is measured by methane detection alarming instrument
Alkane concentration, and the data of address information card are read, it realizes to the address information of patrol point, temporal information, methane concentration, inspection people
The acquisition and storage of member's information, and it is uploaded to electronic board using a variety of wireless transmission methods, and be uploaded to base station, lead to simultaneously
It crosses positioning substation and realizes the position positioning for carrying the personnel of methane detection alarming instrument, then center is sent to by data transmission interface
Monitoring host computer of standing realizes acquisition, data analysis, man-machine interface to all data of entire coal mine gas dynamic patrolling management system
Interactive and early warning linkage；The present invention, which can be realized, obtains reliable address information, carries out the precise positioning of personnel, avoids personnel de-
Hilllock is made up and is not recorded in real time, realizes safety, real-time inspection monitoring and management；The data storage of large capacity had both been realized simultaneously,
Achieve the purpose that real-time data collection is quickly handled again.
The address information card uses passive RFID wireless data transmission technology, realizes the acquisition to underground address information,
And address information is obtained using double data verification mode, it is ensured that the reliability of acquired address information；In addition, using
The mode of glue envelope realizes effective waterproof of passive label.
Passive RFID wireless data transmission technology is the contactless read-write wireless transmission method using 13.56MHz, address
Release does not need any battery power supply, and reading of the methane detection alarming instrument to address release is able to achieve reliable in 10cm
Address information read, for the long working life of address information card completely without being bound by any external factor, reliability is higher.
The methane detection alarming instrument uses active RFID transmission channel, using 2.4GHz frequency range order spread spectrum and
CRC check mode carries out the positioning of night watching personnel by the calculating and allocation algorithm of more people's location data timeslices, realizes strong
Reliable wireless data transmission under interference environment, it is ensured that the accuracy of night watching personnel positioning data.
Wherein, as shown in Fig. 2, the calculating of more people's location data timeslices and the detailed process of allocation algorithm are as follows:
Each methane detection alarming instrument single hair is arranged in step (1) by the way of Fixed Time Interval+random number
Penetrate interval time；
Step (2) waits emission duration timing to arrive；
Step (3) generates random number between 0~200；
Step (4) starts the transmission of this personnel positioning data；
Step (5), personnel positioning data are sent completely, and are returned to step (2) circulation and are executed next round personnel positioning data
It sends.
Since personnel positioning data upload, by the way of active transmission, it is fixed that every methane detection alarming instrument sends personnel
The position data occupied time is less than 1ms, and whole system is set according to identification capacity while 200 methane detection alarming instruments
Meter, therefore, as every methane detection alarming instrument single emission interval time by the way of Fixed Time Interval+random number,
In the case that the personnel positioning data of methane detection alarming instrument transmitting do not conflict, 200 methane detection alarming instruments are known simultaneously
Not, the time of 200ms is needed, therefore, emission duration is set in the mode of 600ms+ (0-200) ms random number, between transmitting
Every time minimum 600ms, it is up to 800ms, rushing for methane detection alarming instrument launching crew's location data can be effectively reduced
Prominent probability, improves the real-time of personnel positioning data receiver.
Further include ferroelectricity and Flash dual chip memory module, realizes the address to patrol point for methane detection alarming instrument
The storage of information, temporal information, methane concentration, patrol officer's information is realized when methane detection alarming instrument is not in wireless transmission mould
When in the wireless signal coverage area of block, data collected are stored in time, are first stored in FeRAM memory chip by item number,
It until the memory space of FeRAM memory chip has been expired, then dumps in Flash memory chip, realizes that low capacity is quickly deposited by byte
Storage, effective combination with the storage of large capacity piecemeal, had not only met the storage effect of the data of large capacity, but also reached real-time acquisition
The purpose of data quick-processing.
Wherein: wireless transport module utilizes underground coal mine for realizing the data wireless transmission between above-mentioned each module
The base station WIFI, the WIFI transmission channel of methane detection alarming instrument design are realized using the ICP/IP protocol of standard to patrol point
The associated data upload of address information, temporal information, methane concentration, patrol officer's information, central station monitoring host computer can obtain well
The associated data in all night watching places on lower the passed through route of night watching personnel, and effectively shown, for not having according to the rules
Route carries out night watching or the personnel to leave post carry out warning reminding, the linkage function being completed at the same time under preset condition.Pass through prison simultaneously
Control center upper computer software, forms corresponding statistical forms.
Electronic board, band Bluetooth transmission interface are completed all using the Bluetooth wireless transmission channel of methane detection alarming instrument
The address information of patrol point, temporal information, methane concentration, patrol officer's information associated data be transmitted directly to electronic board,
Effectively substitute existing hand-written billboard at present.
The methane detection alarming instrument, the electronic board are designed with selftest module, when any component break down, into
Row breakdown judge and instruction, and fault message is uploaded to the central station monitoring host computer, realize the self diagnosis of whole system.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (8)
1. coal mine gas dynamic patrolling management system, it is characterised in that: including data server, central station monitoring host computer, data
Coffret, electronic board, methane detection alarming instrument and address information card；
Data server, the data as entire coal mine gas dynamic patrolling management system store core, deposit for realizing data
Storage and distribution；
Central station monitoring host computer, for realizing the acquisition to all data of entire coal mine gas dynamic patrolling management system, data
Analysis, man-machine interface interaction and early warning linkage；
Data transmission interface, for completing the data interaction of underground equipment Yu central station monitoring host computer, wherein underground equipment includes
Address information card, methane detection alarming instrument, electronic board, base station and positioning substation；
Electronic board for receiving the data of methane detection alarming instrument transmission, and is shown, while uploading the work shape of itself
State；
Methane detection alarming instrument for measuring the methane concentration of locating air environment, and reads the data of address information card, realizes
To the address information of patrol point, temporal information, methane concentration, patrol officer's information acquisition and storage, and using a variety of wireless
Transmission mode is uploaded to electronic board, and is uploaded to base station, while being realized by positioning substation and carrying methane detection alarming instrument
Personnel position positioning；
Address information card for being read by methane detection alarming instrument, and uploads itself address number；
It further include wireless transport module, for realizing the data wireless transmission between above-mentioned each module.
2. coal mine gas dynamic patrolling management system according to claim 1, it is characterised in that: the address information card is adopted
With passive RFID wireless data transmission technology, the acquisition to underground address information is realized, and use double data verification mode
To obtain address information.
3. coal mine gas dynamic patrolling management system according to claim 2, it is characterised in that: passive RFID wireless data
Transmission technology is the contactless read-write wireless transmission method using 13.56MHz, and it is right in 10cm that methane detection alarming instrument is realized
The reading of the address information of address information card.
4. coal mine gas dynamic patrolling management system according to claim 1, it is characterised in that: the CH_4 detection alarm
Instrument uses active RFID transmission channel, using 2.4GHz frequency range order spread spectrum and CRC check mode, positions number by more people
The positioning of night watching personnel is carried out according to the calculating and allocation algorithm of timeslice.
5. coal mine gas dynamic patrolling management system according to claim 4, it is characterised in that: more people's location datas
The calculating of timeslice and the detailed process of allocation algorithm are as follows:
Step (1) is arranged between each methane detection alarming instrument single emission by the way of Fixed Time Interval+random number
Every the time；
Step (2) waits emission duration timing to arrive；
Step (3) generates random number between 0~200；
Step (4) starts the transmission of this personnel positioning data；
Step (5), personnel positioning data are sent completely, and return to the transmission that step (2) circulation executes next round personnel positioning data.
6. coal mine gas dynamic patrolling management system according to claim 1, it is characterised in that: further include ferroelectricity and
Flash dual chip memory module is realized dense to the address information, temporal information, methane of patrol point for methane detection alarming instrument
The storage of degree, patrol officer's information is realized when methane detection alarming instrument is not in the wireless signal coverage area of wireless transport module
When interior, data collected are stored in time, FeRAM memory chip is first stored in by item number, until depositing for FeRAM memory chip
Storage space has been expired, then is dumped in Flash memory chip.
7. coal mine gas dynamic patrolling management system according to claim 1, it is characterised in that: in the data server
The data of storage include address information, temporal information, methane concentration, the patrol officer's information of patrol point.
8. coal mine gas dynamic patrolling management system according to claim 1, it is characterised in that: the CH_4 detection alarm
Instrument, the electronic board are designed with selftest module, when the failure of any component, carry out failure prompting, and fault message
The central station monitoring host computer is uploaded to, realizes the self diagnosis of whole system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112945862A (en) * | 2021-02-01 | 2021-06-11 | 重庆梅安森科技股份有限公司 | Handheld terminal of patrolling and examining of colliery gas |
| CN112967413A (en) * | 2021-02-01 | 2021-06-15 | 重庆梅安森科技股份有限公司 | Coal mine gas dynamic patrol system and method |
| CN113027512A (en) * | 2021-04-29 | 2021-06-25 | 扬中市南方矿用电器有限公司 | Detection device and method for coal mine gas extraction pipeline |
| CN114183200A (en) * | 2021-11-29 | 2022-03-15 | 中煤科工集团沈阳研究院有限公司 | Inspection device and method for inspection period of coal mine personnel positioning system |
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