CN105872982A - Catastrophe-resistant mine emergency communicating and positioning system - Google Patents
Catastrophe-resistant mine emergency communicating and positioning system Download PDFInfo
- Publication number
- CN105872982A CN105872982A CN201610291060.2A CN201610291060A CN105872982A CN 105872982 A CN105872982 A CN 105872982A CN 201610291060 A CN201610291060 A CN 201610291060A CN 105872982 A CN105872982 A CN 105872982A
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- communication
- wireless
- power supply
- node apparatus
- wireless node
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21F17/04—Distributing means for power supply in mines
- E21F17/06—Distributing electric power; Cable networks; Conduits for cables
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a catastrophe-resistant mine emergency communicating and positioning system. The system comprises wireless node devices and wireless power supply devices, the wireless power supply devices supply power to the wireless node devices in a wireless power supply mode, and when disaster accidents occur under a mine, a wireless emergency communication network can be formed through the wireless node devices to supply communication services to underground wireless terminal devices. According to the system, the phenomenon that when disasters occur, interruption of communication between the overground space and the underground is caused by damage of communication and power supply cables can be avoided, it is guaranteed that reliable communicating and positioning services can be supplied to underground trapped persons and rescuers after the underground disasters occur, and meanwhile data link communication services can be supplied to video and sensor devices.
Description
Technical field
The present invention relates to one combat a natural disaster to become mine emergency communication and alignment system, this system relates to wireless communication technology, wireless charging
The fields such as technology.
Background technology
Coal is China's main energy sources, accounts for primary energy 70%.Coal industry is high risk industries, gas, floods, fire,
The accident such as top board, coal dust annoyings Safety of Coal Mine Production.Downhole communication contacted system is colliery " six big safe system "
One of, it is the important leverage of Safety of Coal Mine Production.Under existing well, communication system mainly includes line dispatching patcher, movement
Communication system, broadcast system, disaster relief system, ground through communication system.When down-hole occurs Gas Outburst, gas explosion, impact
During the accidents such as ground pressure, roof fall, floods, fire, can be to the various communication equipments in underworkings, the communications cable, supply lines
Cable damages, so the disaster-prone accident impact of wired dispatching system, mobile communication system, broadcast system cannot use.
The wireless communication system that disaster communication system is carried by Post disaster relief personnel, can realize communication after calamity in certain limit, but right
Still cannot communicate in the region that rescue personnel cannot arrive.Ground through communication system is communication system based on low frequency through the earth communication technology
System, accident impact is little, and anti-disaster ability is strong, but the transmission equipment of through the earth communication and the big cost of transmission antenna volume are high, so thoroughly
Ground communication is general uses One-to-All Broadcast communication mode, and personnel in the pit can only information on received well, it is impossible to sends information, only
Chamber at down-hole limited quantity just can be furnished with transmitting equipment, the aboveground down-hole still cannot known not in chamber after having an accident
Personnel's situation, so ground through communication system also cannot meet mine emergency communication needs.For ensureing the life security of personnel in the pit
And solve problem above, need new emergent radio communication system, it is possible to avoid when disaster occurs due to communication, power supply electricity
The damage of cable and cause aboveground with down-hole communication disruption, it is ensured that after down-hole disaster occurs, can be down-hole trapped personnel with
Rescue personnel provides communication and positioning service reliably, can be video and sensor device offer data link communication service simultaneously.
Summary of the invention
Present invention aim at providing one to combat a natural disaster to become mine emergency communication and alignment system, keep at a certain distance away installation nothing in down-hole
Line node device, wireless node apparatus uses wireless multi-hop communication mode to form cordless communication network；The mobile radio terminal of down-hole
Equipment is by wireless node apparatus access to wireless communication network；Wireless node apparatus internal battery；Wireless node apparatus is by wireless confession
Electricity equipment provides work energy and accumulator rechargeable electrical energy；Wireless powering device is provided power supply input by power cable；When wireless confession
When electricity equipment cannot work, it wireless node apparatus powered is automatically into power saving duty, and wireless node apparatus can be by nothing
Line mobile terminal device and adjacent miscellaneous equipment activate, and provide communication and positioning service for system；Wireless node apparatus is in province
During electricity duty, only receive wireless signal and do not send wireless signal；Wireless node apparatus is activated after entrance normal operating conditions,
There is complete transmission reception and networking function；After the wireless node apparatus being activated completes this time to communicate, automatically into saving electrician
Make state；Emergency communication can be initiated by mobile radio terminal equipment, it is possible to is initiated by aboveground communication equipment.
1. described in, system farther includes: wireless powering device can use the infrared power supply unit of infrared power supply mode or use laser
The laser powered sensor equipment of power supply mode or the radio power supply unit of employing radio power supply mode.
2. described in, system farther includes: wireless node apparatus shell includes top and bottom, is close to install bottom wireless node apparatus
Face is fixed, and shell section should have following characteristics, and side is streamlined, and top does not has acute angle or right angle, bottom and top
Angle, boundary is acute angle；Top material could be used without the high temperature resistant heat insulation material of radio signal shielding effect；Base material uses
There is the material of good heat conductive characteristic；Wireless node apparatus shell has water-proof function.
3. described in, system farther includes: power cable uses leaky cable.
4. described in, system farther includes: when wireless node apparatus is by mobile radio terminal device activation, as mobile radio terminal sets
For needing uplink communication, wireless node apparatus then activates the adjacent wireless node equipment on uplink communication direction, by relay side
Formula activates all wireless node apparatus on up direction step by step, and the network environment of the required link that completes to communicate is set up；When being
When system needs downlink communication or location, the same required wireless node apparatus of the activation communication of relay active mode or location that uses, complete
Network environment needed for becoming communication or location is set up；After this has communicated, it is impossible to the wireless node apparatus of charging is automatic
Enter power saving duty.
5. described in, system farther includes: the power supply input of wireless powering device can use unified power supply mode to may be used without switched-mode power supply
Mode；When using unified power supply mode, all wireless powering device are connected in parallel on same road direct current supply cable, thus
The unified power supply of road direct current supply cable, power supply is by each AC/DC electricity conversion equipment being connected in parallel on this road direct current supply cable altogether
With providing；When using switched-mode power supply mode, the wireless type power supply unit in each region is connected in parallel on the direct current supply line of one's respective area
On cable, thus region, road direct current supply cable is powered, and power supply is provided separately by the AC/DC electricity conversion equipment of one's respective area.
6. described in, system farther includes: the power supply input of wireless powering device can use alternating current (AC) directly-powered mode, supplies when using this
Time electrically, wireless powering device is built-in with AC/DC modular converter, can be directly connected to Alternating Current Power Supply cable and realize power supply.
7. described in, system farther includes: mobile radio terminal equipment include mobile phone, locator card, have radio communication function mine lamp,
There is the portable instrument of radio communication function and other has the equipment of radio communication function.
8. described in, system farther includes: mobile radio terminal equipment is provided with emergency call button, for activating the nothing in communication zone
Line node device.
9. described in, system farther includes: wireless node apparatus is installed on tunnel sidewall or top and well bore wall, it is possible to be installed on tunnel
Sidewall or top and well bore wall is firm and in the validity period of tunnel on the affiliated facility of permanent reservation.
Accompanying drawing explanation
Fig. 1 combats a natural disaster to become mine emergency communication and implements schematic diagram 1 with alignment system.
Fig. 2 combats a natural disaster to become mine emergency communication and implements schematic diagram 2 with alignment system.
Fig. 3 wireless powering device is unified for electrical schematic.
Fig. 4 wireless powering device block supply schematic diagram.
Fig. 5 wireless powering device and wireless node apparatus installation site schematic diagram.
The wireless powering device of Fig. 6 radio power supply mode is installed and cross-sectional view with wireless node apparatus.
Fig. 7 is infrared or laser powered sensor mode, and wireless powering device is installed and cross-sectional view with wireless node apparatus
Fig. 8 wireless powering device principle composition schematic diagram.
Fig. 9 wireless node apparatus principle composition schematic diagram.
The mobile radio terminal equipment of Figure 10 down-hole initiates the working-flow figure of communication.
The working-flow figure of the mobile radio terminal equipment communication of Figure 11 uphole equipment calling down-hole.
Detailed description of the invention
The detailed description of the invention 1 of described communication and alignment system is as it is shown in figure 1, composition includes:
1. monitor terminal (101), by cordless communication network and downhole wireless mobile terminal device (106) two-way communication.
2. switch (102), are responsible for the data exchange of the equipment of all access network based on ethernet, are responsible for cordless communication network simultaneously
Set up and management.
3. wireless powering device (103), are that wireless node apparatus (104) is powered by wireless power mode, pass through supply lines
Cable obtains direct current energy from AC/DC electricity conversion equipment (105).
4. wireless node apparatus (104), are responsible for setting up cordless communication network；Cannot normal work at wireless powering device (103)
Automatically into power saving duty in the case of work, can be set by mobile radio terminal equipment (106) and adjacent other
Standby activation enters normal operating conditions, auto-returned power saving duty after communication completes.
5. AC/DC electricity conversion equipment (105), down-hole alternating current power supply being converted to unidirectional current by power cable is wireless power
Transmitting equipment (103) is powered；As used ac power supply method, wireless powering device directly connects down-hole alternating current power supply,
Then need not AC/DC electricity conversion equipment.
6. mobile radio terminal equipment (106), including mobile phone, locator card, have the mine lamp of radio communication function, have nothing
The portable instrument of line communication function has the equipment of radio communication function with other, is provided with emergency call button, is used for
Activate the wireless node apparatus (104) being in power down mode in communication zone.
Fig. 2 show described communication with alignment system at inclined shaft, the embodiment schematic diagram of footrill.
The power supply mode of wireless powering device includes unified power supply mode, switched-mode power supply mode, ac power supply method.Unified power supply
Embodiment as it is shown on figure 3, all wireless powering device (103) are used direct current supply mode to power by unified power cable,
Wireless powering device (103) connects unified power cable with parallel way, the friendship in parallel that need to keep at a certain distance away during enforcement/straight
Stream electricity conversion equipment (105) is with compensating cable pressure drop, it is ensured that supply voltage.
As shown in Figure 4, the difference with unified power supply is not use system to the embodiment of the switched-mode power supply mode of wireless powering device
One power cable, and use and power on block supply cable, power supply is independent by AC/DC electricity conversion equipment (105) of one's respective area
There is provided.
Fig. 5 is wireless powering device and wireless node apparatus installation site schematic diagram in tunnel, wireless powering device (103) with
Wireless node apparatus (104) adjacent installation.
Fig. 6 is that the wireless powering device of radio power supply mode is installed and cross-sectional view with wireless node apparatus, including:
1. anchor pole (601), are used for fixedly mounting wireless node apparatus, go deep into inside wall, make bottom wireless node apparatus tight
Patch mounting plane is fixed, and accident can effectively prevent wireless node apparatus from coming off when occurring.
2. wireless node apparatus outer casing bottom (602), are used for carrying and installing each parts of wireless node apparatus, use and have well
The material of heat conductivility, and there is water-proof function, can be enterprising to the medium of bottom contact by the conduction of device interior heat
Row heat loss through conduction.
3. wireless node apparatus cover top portion (603), in streamlined, material could be used without the high temperature resistant of radio signal shielding effect
Heat-barrier material, and there is water-proof function.
4. wireless node apparatus mainboard fixed copper post (604), for supporting and fixed wireless node device mainboard (203), totally 4
Individual, it is fixed on bottom wireless node apparatus.
5. wireless node apparatus battery (605), are arranged on wireless node apparatus outer casing bottom.
6. wireless node apparatus mainboard (606), form component including all of wireless node apparatus in addition to antenna, are arranged on electricity
Above pond, with battery interval a certain distance.
7. wireless node apparatus communication antenna (607), FPC board type antenna uses flexible special patchcord to connect with the IPX on mainboard
Mouth connects.
8. wireless node apparatus is powered reception antenna (608), and launch equipment to launch antenna (210) relative with wireless power.
9. expansion bolt (609), are used for installing fixed wireless and power transmitting equipment.
10. wireless powering device is powered transmitting antenna (610), installs against shell wall, powers reception sky with wireless node apparatus
Line (608) direction is relative.
11. wireless powering device mainboards (611), mainly include that wireless power launches management component.
The DC voltage modular converter (612) of 12. wireless powering device.
13. wireless powering device shells (613).
Fig. 7 is infrared or the wireless powering device of laser powered sensor mode is installed and cross-sectional view with wireless node apparatus, if
Standby mounting means and population structure are essentially identical with shown in Fig. 6, and difference essentially consists in:
1. semiconductor laser (701), can launch the near-infrared laser of 810nm or the laser of other wavelength.
2. monocrystal silicon photoelectric conversion plate (702)；, the laser of near-infrared laser or other wavelength is converted to electric energy, multiple photoelectricity
Change-over panel is connected in parallel.
The hardware being illustrated in figure 8 wireless powering device mainly comprises, including:
1. DC voltage modular converter (801), DC voltage modular converter input voltage 24V, output voltage and power need to meet
Wireless power launches management module for power supply requirement.
2. wireless power launches management module (802), as used radio power supply mode, then uses XKT-830B module；As
Use infrared or laser powered sensor mode, then use the control module that semiconductor laser is relevant.
3. wireless power emission element (803), as used radio power supply mode, then use ring-shaped emission coil, coil outer diameter
48mm, internal coil diameter 30mm, coil thickness 0.6mm；As used infrared or laser powered sensor mode, then with quasiconductor
Laser instrument is as emission element.
It is illustrated in figure 9 the hardware composition schematic diagram of wireless node apparatus, mainly comprises and include:
3. processor (901), use Atheros AR7161 radio network processing, operating frequency 600Mhz.
4. memory element (902)；Including flash memory and random access memory.Flash memory uses 32M Flash；Random storage
Device uses 128M SDRAM.
5. wireless communication unit (903): include wireless communication module and antenna.Wireless communication module acp chip uses Atheros
AR9220；Antenna uses FPC template built-in aerial, by flexible special patchcord and AR9220 extraction on mainboard
IPX interface connects, and maximum gain is not less than 3.5dBi.
6. the wireless node apparatus exported near tunnel, in addition to playing the effect of the wireless access of mobile radio terminal equipment, also has
Emergent radio communication network is accessed the function of aboveground cable network, so this wireless node apparatus has wire communication
Unit.Landline communication unit (904) includes wire communication module and communication interface.Wire communication module acp chip
Use Atheros AR8035, support gigabit Ethernet.Communication interface uses standard ethernet communication interface.
7. power subsystem (905): include the conversion of battery, voltage and battery charging and discharging administrative section, battery uses lithium ion electric power storage
Pond, lithium battery should have anti-reverse function, has outside internal protection circuitry, has and has outer protection circuit, possesses anti-mistake
Fill, anti-mistake is put, cross the function such as stream, short circuit, also equalizaing charge, balanced discharge function.Voltage conversion is responsible for will
Lithium battery output voltage is converted to other unit components required voltage, uses MAX1724 power supply chip.Battery charges
Higher management chip uses CS0301 lithium cell charging managing chip.
8. wireless power unit (906): include that wireless power receives management module and energy acceptance parts.As used radio to supply
Electrically, wireless power receives management module and uses XKT-830B receiver module, and energy acceptance parts use toroid
Circle, receiving coil external diameter 30mm, internal coil diameter 15mm, coil thickness 0.6mm；As used infrared or laser powered sensor
Mode, then using monocrystal silicon photoelectric conversion plate as energy acceptance parts, and use the wireless power matched to receive
Management module.
During emergency communication, as downhole wireless mobile terminal device initiate communication, the workflow of described system as shown in Figure 10:
1. (1001) press emergency call button and the call number of mobile radio terminal equipment, and mobile radio terminal equipment sends
Network link sets up request.
2. the wireless node apparatus that (1002) are nearest receives mobile radio terminal device network request for building link, such as radio node
Equipment is in power down mode, then proceed to normal operating conditions from power down mode.
3. the route of (1003) wireless node apparatus inquiry called device.
4. (1004) wireless node apparatus judges network link direction, if called device is by this wireless node apparatus according to route
Access, then perform (1007)；Route progression such as called device is relatively low, then perform (1005)；Such as called
The route progression of equipment is higher then performs (506).
5. (1005) wake up the wireless node apparatus being in power down mode on up direction successively up, until called region
Wireless node apparatus, if called device is uphole equipment, then wakes up all wireless node apparatus of up direction up.
6. (1006) wake up the wireless node apparatus being in power down mode on down direction successively up, until called device location
The wireless node apparatus in territory.
7., after (1007) network link equipment needed thereby is all waken up, set up the network link between calling device and called device.
8. (1008) calling device and called device are communicated by network link.
9. (1009) calling device or either one active of called device terminate communication, or it is countless to exceed setting time network link
According to communication, then disconnect network link.
10., after (1010) disconnect the network link delay setting time, on this network link, original place is in the radio node of power down mode
Equipment proceeds to power down mode again.
During emergency communication, as uphole equipment initiates the communication of the mobile radio terminal equipment with down-hole, the workflow of described system
As shown in figure 11:
1. the mobile radio terminal equipment of (1101) uphole equipment calling down-hole.
2. the network link of the wireless node apparatus reception uphole equipment that (1102) access cable network sets up request.
3. the route of (1103) wireless node apparatus inquiry called device.
4. (1104) wake up the wireless node apparatus being in power down mode on down direction successively up, until called device location
The wireless node apparatus in territory.
5., after (1105) network link equipment needed thereby is all waken up, set up the network link between calling device and called device.
6. (1106) calling device and called device are communicated by network link.
7. (1107) calling device or either one active of called device terminate communication, or it is countless to exceed setting time network link
According to communication, then disconnect network link.
8., after (1108) disconnect the network link delay setting time, on this network link, original place sets in the radio node of power down mode
For again proceeding to power down mode.
Claims (10)
1. combat a natural disaster to become mine emergency communication and alignment system for one kind, it is characterised in that: keep at a certain distance away installation radio node in down-hole
Equipment, wireless node apparatus uses wireless multi-hop communication mode to form cordless communication network；The mobile radio terminal of down-hole sets
Standby by wireless node apparatus access to wireless communication network；Wireless node apparatus internal battery；Wireless node apparatus is by wireless
Power supply unit provides work energy and accumulator rechargeable electrical energy；Wireless powering device is provided power supply input by power cable；When
When wireless powering device cannot work, it wireless node apparatus powered is automatically into power saving duty, radio node
Equipment can be activated by mobile radio terminal equipment and adjacent miscellaneous equipment, provides communication and positioning service for system；Wireless
When node device is in power saving duty, only receives wireless signal and do not send wireless signal；Wireless node apparatus is activated
After entering normal operating conditions, there is complete transmission reception and networking function；The wireless node apparatus being activated completes this
After secondary communication, automatically into power saving duty；Emergency communication can be initiated by mobile radio terminal equipment, it is possible to by aboveground
Communication equipment initiate.
2. communication as claimed in claim 1 and alignment system, it is characterised in that: wireless powering device can use infrared power supply mode
Infrared power supply unit or use laser powered sensor mode laser powered sensor equipment or use radio power supply mode wireless
Electricity power supply unit.
3. communication as claimed in claim 1 and alignment system, it is characterised in that: wireless node apparatus shell includes top and bottom,
Being close to installed surface bottom wireless node apparatus fix, shell section should have following characteristics, and side is streamlined, and top does not has
Having acute angle or right angle, bottom and angle, boundary, top are acute angle；Top material could be used without the resistance to height of radio signal shielding effect
Temperature heat-barrier material；Base material uses the material with good heat conductive characteristic；Wireless node apparatus shell has water-proof function.
4. communication as claimed in claim 1 and alignment system, it is characterised in that: power cable uses leaky cable.
5. communication as claimed in claim 1 and alignment system, it is characterised in that: when wireless node apparatus is set by mobile radio terminal
During standby activation, as mobile radio terminal equipment needs uplink communication, wireless node apparatus then activates the phase on uplink communication direction
Adjacent wireless node apparatus, activates all wireless node apparatus on up direction step by step by relay mode, completes the institute that communicates
The network environment needing link is set up；When system needs downlink communication or location, same employing relay active mode activates communication
Or the required wireless node apparatus in location, the network environment needed for completing communication or location is set up；After this has communicated,
The wireless node apparatus that cannot charge is automatically into power saving duty.
6. communication as claimed in claim 1 and alignment system, it is characterised in that: the power supply input of wireless powering device can use system
One power supply mode may be used without switched-mode power supply mode；When using unified power supply mode, all wireless powering device are connected in parallel on
On same road direct current supply cable, the thus unified power supply of road direct current supply cable, power supply is by being connected in parallel on this road direct current supply line
Each AC/DC electricity conversion equipment on cable provides jointly；When using switched-mode power supply mode, the wireless type in each region is powered and is set
Standby being connected in parallel on the direct current supply cable of one's respective area, thus region, road direct current supply cable is powered, power supply by the friendship of one's respective area/
Unidirectional current conversion equipment is provided separately.
7. communication as claimed in claim 1 and alignment system, it is characterised in that: the power supply input of wireless powering device can use friendship
Stream direct feeding system, when using this power supply mode, wireless powering device is built-in with AC/DC modular converter, can be direct
Connect Alternating Current Power Supply cable and realize power supply.
8. communication as claimed in claim 1 and alignment system, it is characterised in that: mobile radio terminal equipment includes mobile phone, location
Card, there is the mine lamp of radio communication function, there is the portable instrument of radio communication function and other has radio communication function
Equipment.
9. mobile radio terminal equipment as claimed in claim 8, it is characterised in that: mobile radio terminal equipment is provided with urgent call
Button, for activating the wireless node apparatus in communication zone.
10. communication as claimed in claim 1 and alignment system, it is characterised in that: wireless node apparatus is installed on tunnel sidewall or top
Portion and well bore wall, it is possible to be installed on tunnel sidewall or top and well bore wall is firm and permanent reservation in the validity period of tunnel
Affiliated facility on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291060.2A CN105872982B (en) | 2016-05-05 | 2016-05-05 | Disaster-resistant mine emergency communication and positioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291060.2A CN105872982B (en) | 2016-05-05 | 2016-05-05 | Disaster-resistant mine emergency communication and positioning system |
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| CN105872982B CN105872982B (en) | 2023-05-02 |
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| CN107613580A (en) * | 2017-10-19 | 2018-01-19 | 中国矿业大学(北京) | Combat a natural disaster to become mine emergency communication system |
| CN107820220A (en) * | 2017-11-28 | 2018-03-20 | 拜城县众维煤业有限公司 | A kind of mine emergency rescues multi-functional communications node |
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| CN107613580B (en) * | 2017-10-19 | 2023-05-02 | 中国矿业大学(北京) | Disaster-resistant mine emergency communication system |
| CN107820220A (en) * | 2017-11-28 | 2018-03-20 | 拜城县众维煤业有限公司 | A kind of mine emergency rescues multi-functional communications node |
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| CN105872982B (en) | 2023-05-02 |
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