CN107733468A - The power line network system and its method of work of a kind of underground mine electric power scraper - Google Patents
The power line network system and its method of work of a kind of underground mine electric power scraper Download PDFInfo
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- CN107733468A CN107733468A CN201710993826.6A CN201710993826A CN107733468A CN 107733468 A CN107733468 A CN 107733468A CN 201710993826 A CN201710993826 A CN 201710993826A CN 107733468 A CN107733468 A CN 107733468A
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- scraper
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- electric power
- power cable
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004891 communication Methods 0.000 claims abstract description 72
- 230000001939 inductive effect Effects 0.000 claims description 60
- 230000005611 electricity Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013497 data interchange Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of power line network system of underground mine electric power scraper and its method of work, the system includes：An at least Ethernet switch, access system looped network；One or more power cable；Scraper end communication device, it is installed on the scraper generator terminal of power cable and is connected to electric power scraper；Main control end communication device, it is installed on the main control end of power cable and is connected to Ethernet switch, scraper end communication device passes sequentially through power cable, main control end communication device, Ethernet switch to electric power scraper collecting device information and sends device information to system looped network, and control information is passed sequentially through Ethernet switch, main control end communication device, power cable, scraper end communication device and is sent to electric power scraper by system looped network.The present invention realizes the network communication of stable safety while the network equipment is protected.
Description
Technical field
The present invention relates to mining technical field of network communication, and in particular to a kind of power line of underground mine electric power scraper
Network system and its method of work.
Background technology
In underground mine exploitation and hauling operation, downhole network communication is safety in production, production scheduling, the production in mine
The technical foundation that is carried out is managed, due to the particularity of underground mine, is set in connection roadway common wired or wireless
Network is all feasible, but unstable, unsafe problem be present using the network system of routine in route.
In the route of underground mine, there are bursting work, excavation operation, the network equipment and network cable easily quilt in explosion
Shock wave damages, and such as uses legacy network devices, it is necessary to withdraw from equipment Removal during explosion, after the completion of explosion again by equipment again
Installation, serious reduces production efficiency；With the progress of headwork, route depth gradually increases, and such as uses traditional net
Network equipment is, it is necessary to ceaselessly increase equipment and cable.Therefore a kind of more convenient, safety, the network system saved are needed, to realize
Network arrangement in route.
The content of the invention
In view of the shortcomings of the prior art, the present invention propose a kind of underground mine electric power scraper power line network system and
Its method of work.Power carrier is creatively diverted in underground mine by the present invention, and can solve conventional networking systems can not
Solve the problems, such as, realization has electricity to have net, reduces the cost of the network equipment, saves the time of individually arrangement network, protects
The network communication of stable safety is realized while the network equipment.
The invention discloses a kind of power line network system of underground mine electric power scraper, it is characterised in that including：Extremely
A few Ethernet switch, access system looped network；One or more power cable；Scraper end communication device, is installed on institute
State the scraper generator terminal of power cable and be connected to electric power scraper；And main control end communication device, it is installed on the power cable
Main control end and be connected to the Ethernet switch, wherein, the scraper end communication device is adopted to the electric power scraper
Collect facility information, pass sequentially through the power cable, the main control end communication device, the Ethernet switch by the equipment
Information is sent to the system looped network, and control information is passed sequentially through the Ethernet switch, the master by the system looped network
Control end communication device, the power cable, the scraper end communication device are sent to the electric power scraper.
Preferably, the scraper end communication device includes the first inductive coupler being connected with each other and first carrier control
Device, the main control end communication device include the second inductive coupler and the second carrier controller being connected with each other, wherein, described the
One inductive coupler is used to the facility information is loaded on the power cable and carries control above and below the power cable
Information, second inductive coupler are used to the control information being loaded on the power cable and from the power cable
It is upper to download the facility information, and the first carrier controller is used to provide wireless network, with from the electric power scraper
Gather the facility information in the wireless network range and the control information is sent to the electric power scraper, institute
State the second carrier controller to be used to provide cable network, to receive the control information and by described in from the Ethernet switch
Facility information is sent to the Ethernet switch.
Preferably, the Ethernet switch is placed in the communication counter of switchgear house and powered by the communication counter, described dynamic
The main control end of line of force cable is arranged in the power distribution cabinet of the switchgear house, the main control end of the power cable by the power distribution cabinet and
The communication counter is connected with the Ethernet switch, and second carrier controller is powered by the power distribution cabinet.
Preferably, substation of the Ethernet switch as the system looped network, while it is used as the power line network
The main website of system, for connecting the system looped network and the power line network system.
Preferably, first inductive coupler is installed on every power cable and the first inductive coupler card
The scraper generator terminal of the power cable is connected on, the first carrier controller is disposed proximate to the scraper generator terminal, described
Second inductive coupler is installed on every power cable and second inductive coupler is connected to the power cable
The main control end, second carrier controller are disposed proximate to the main control end.
Preferably, the corresponding first carrier controller of every first inductive coupler, every described second
Corresponding second carrier controller of inductive coupler.
Preferably, the scraper end communication device also includes transformer, and the transformer is from the power cable power taking
And the voltage after conversion is supplied to the first carrier controller.
Preferably, the corresponding first carrier controller of every first inductive coupler, more described second
Corresponding second carrier controller of inductive coupler.
The invention also discloses a kind of method of work of the power line network system of above-mentioned underground mine electric power scraper,
It is characterised in that it includes：S1：When the electric power scraper enters route, the scraper end communication device follows the electric power
Scraper enters route；S2：For the electric power scraper in route operation, the scraper end communication device is to the electric shovel
Fortune machine collecting device information, the power cable, the main control end communication device, the Ethernet switch are passed sequentially through by institute
State facility information and be sent to the system looped network, the system looped network by control information pass sequentially through the Ethernet switch,
The main control end communication device, the power cable, the scraper end communication device are sent to the electric power scraper；And
S3：When the electric power scraper machine operation is completed to withdraw route, the scraper end communication device follows the electric power scraper to remove
From route and it is stopped.
Preferably, the scraper end communication device includes the first inductive coupler being connected with each other and first carrier control
Device, the main control end communication device include be connected with each other the second inductive coupler and the second carrier controller, wherein, it is described with
Too network switch receives control information from the system looped network, second carrier controller provide cable network with from it is described with
Too network switch receives the control information, and the control information is loaded into the power cable by second inductive coupler
On, control information is sent to the first carrier controller by the power cable, and first inductive coupler moves from described
The control information is downloaded on line of force cable, the control information is sent to the electric power scraper by the first carrier controller
Machine, and wherein, the first carrier controller provides wireless network, is gathered from the electric power scraper in the wireless network
In the range of facility information, the facility information is loaded on the power cable by first inductive coupler, described dynamic
The facility information is sent to second inductive coupler by line of force cable, and second inductive coupler is from the power cable
Upper to download the facility information, the facility information is sent to by second carrier controller by the Ethernet switch
The system looped network.
The present invention realizes the data transfer of underground mine electric power scraper electro-mechanical force network, can avoid underground traditional approach net
Network is scratched etc. by explosion, transport and destroyed, and also compares maneuverability, it is not necessary to the network coverage, it is only necessary to utilizes the dynamic of scraper
The line of force can be used, to realize that the production scheduling of underground equipment and equipment control provide network foundation.Further, electricity is utilized
The line of force is as transmission medium, in the electric current that the high-frequency signal for being loaded with data is loaded on to cable by inductive coupler, by dynamic
Power cable carries out data transmission, and recycles carrier controller to filter out high-frequency signal from electric current, and be sent to Ethernet
In, pass through the Ethernet switch access system looped network of switchgear house, it is not necessary to rearrange network cable, have construction it is fast, into
This low advantage.
Brief description of the drawings
Fig. 1 is the system architecture diagram of the power line network system of underground mine electric power scraper；
Fig. 2 is the comprising modules schematic diagram of Ethernet switch；
Fig. 3 is switchgear house end communication device comprising modules schematic diagram；
Fig. 4 is scraper end communication device comprising modules schematic diagram；
Fig. 5 is the first inductive coupler scheme of installation.
Embodiment
Below with reference to the accompanying drawings, the present invention will be further described in detail, in order to which the present invention is more clear and is easy to
Understand.One of ordinary skill in the art will recognize, without departing from the spirit and scope of the present invention, Ke Yiyong
A variety of modes or its combination are modified to described embodiment.Therefore, accompanying drawing and description are inherently explanation
Property, it is not intended to limit the scope of the claims.
Embodiments of the invention are described in detail with reference to Fig. 1-Fig. 5.
Fig. 1 is the system architecture diagram of the power line network system of underground mine electric power scraper, the power line network system
Including：An at least Ethernet switch 1, access system looped network；One or more power cable 4；Scraper end communication device,
It is installed on the scraper generator terminal of power cable 4 and is connected to electric power scraper；And main control end communication device, it is installed on power cable
4 main control end is simultaneously connected to Ethernet switch 1.Scraper end communication device is to electric power scraper collecting device information, successively
System looped network is sent device information to by power cable 4, main control end communication device, Ethernet switch 1, system looped network will
Control information passes sequentially through Ethernet switch 1, main control end communication device, power cable 4, scraper end communication device and is sent to
Electric power scraper.
Preferably, as shown in figure 1, scraper end communication device includes the first inductive coupler 5 and first being connected with each other
Carrier controller 6, main control end communication device include be connected with each other the second inductive coupler 3 and the second carrier controller 2, first
Inductive coupler 5 is used to facility information being loaded on power cable 4 and from download control information on power line cable 4, and described the
Two inductive couplers 3 are used to control information is loaded on power cable 4 and downloads facility information from power line cable 4, and
First carrier controller 6 is used to provide wireless network, to gather the facility information in wireless network range from electric power scraper
And control information is sent to electric power scraper, the second carrier controller 2 is used to providing cable network with from Ethernet switch 1
Receive control information and facility information is sent to Ethernet switch 1.
As shown in Fig. 2 Ethernet switch 1 is placed in the communication counter of switchgear house and powered by communication counter, power cable 4
Main control end is arranged in the power distribution cabinet of switchgear house, and the main control end of power cable passes through power distribution cabinet and communication counter and Ethernet switch
1 connection.Preferably, communication counter has current supply circuit, and Ethernet switch 1 is powered by current supply circuit, Ethernet switch 1
As the substation of system looped network, system looped network is connected by system looped network network interface, while as power line network system
Main website, the second carrier controller 2 is connected by power line network network interface, so as to connect system looped network and power line network system
System.Preferably, switchgear house is located underground, so that the power line network system of the present invention is independently run in underground, without
Need any operation of ground.
As shown in figure 5, the first inductive coupler 5 is installed on every power cable 4 and the clamping of the first inductive coupler 5
In the scraper generator terminal of power cable 4, first carrier controller 6 is disposed proximate to scraper generator terminal.Every first inductive coupler 5 is right
Ying Yitai first carriers controller 6.As shown in Figure 1 and Figure 4, scraper end communication device includes transformer 7, and transformer 7 is driven
Voltage after conversion is simultaneously supplied to first carrier controller 6 by the power taking of line of force cable 4, and first carrier controller 6 passes through wireless network
Interface accesses wireless network.Transformer 7 is preferably that 380V turns 220V.
The installation of first inductive coupler 5 need not carry out wiring with electric power scraper mechanomotive force cable 4, protect electric shovel
Transport the integrality of mechanomotive force cable 4.First inductive coupler 5 couples high-frequency carrier signal by using electromagnetic induction principle
Onto power cable 4, the transmitting of carrier signal is realized.
As shown in figures 1 and 3, the second carrier controller 2 is powered by power distribution cabinet current supply circuit by power distribution cabinet, is preferably provided
220V AC powers, the second carrier controller 2 access cable network by ethernet network interface.In Fig. 1 and Fig. 3, more
Corresponding second carrier controller 2 of second inductive coupler 3, every second carrier controller 2 can read more with loading simultaneously
The high-frequency signal of bar power cable 4.Or also can be by corresponding second carrier controller 2 of every second inductive coupler 3.
First inductive coupler 5 and first carrier control in the mounting means and Fig. 5 of second inductive coupler 3 and the second carrier controller 2
Device 6 processed is similar, and on every power cable that the second inductive coupler 3 is installed in power distribution cabinet and the second inductive coupler 3 blocks
The main control end of power cable 4 is connected on, the second carrier controller 2 is disposed proximate to main control end.
The method of work of the power line network system of underground mine electric power scraper includes：
S1：When electric power scraper enters route, scraper end communication device follows electric power scraper to enter route；
S2：Electric power scraper in route operation, scraper end communication device to electric power scraper collecting device information, according to
It is secondary that system looped network, system looped network are sent device information to by power cable 4, main control end communication device, Ethernet switch 1
Control information is passed sequentially through into Ethernet switch, main control end communication device, power cable, scraper end communication device to be sent to
Electric power scraper；And
S3：When electric power scraper machine operation is completed to withdraw route, state scraper end communication device and follow electric power scraper to withdraw
Route is simultaneously stopped.
Preferably, scraper end communication device includes the first inductive coupler 5 and first carrier controller being connected with each other
6, main control end communication device includes the second inductive coupler 3 and the second carrier controller 2 being connected with each other.Ethernet switch 1
Control information is received from system looped network, the second carrier controller 2 provides cable network to receive control letter from Ethernet switch 1
Control information is loaded on power cable 4 by breath, the second inductive coupler 3, and control information is sent to the first load by power cable 4
Wave controller 6, the first inductive coupler 5 is from download control information on power line cable 4, and first carrier controller 6 is by control information
It is sent to electric power scraper.And first carrier controller 6 provides wireless network, gathered from electric power scraper in wireless network model
Interior facility information is enclosed, facility information is loaded on power cable 4 by the first inductive coupler 3, and power cable 4 is by facility information
The second inductive coupler 3 is sent to, the second inductive coupler 3 downloads facility information, the second carrier controller from power line cable 4
Facility information is sent to system looped network by 2 by Ethernet switch 1.
Working method more than, damage when avoiding explosion to the network equipment, reduces the investment of network cable.
Realize net to walk with electricity, there is electricity to have net, compensate for conventional network system vacancy of data acquisition and data transfer in route,
Power line network and system looped network are effectively subjected to data interchange.The present invention realizes underground mine electric power scraper electro-mechanical force net
The data transfer of network, to realize that the production scheduling of underground equipment and equipment control provide network foundation.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made,
Equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. power line network system of underground mine electric power scraper, it is characterised in that including：An at least Ethernet switch, access system looped network；One or more power cable；Scraper end communication device, it is installed on the scraper generator terminal of the power cable and is connected to electric power scraper；AndMain control end communication device, it is installed on the main control end of the power cable and is connected to the Ethernet switch,Wherein, the scraper end communication device passes sequentially through the power line to the electric power scraper collecting device information The facility information is sent to the system looped network, the system by cable, the main control end communication device, the Ethernet switch Control information is passed sequentially through the Ethernet switch, the main control end communication device, the power cable, described by system looped network Scraper end communication device is sent to the electric power scraper.
- 2. power line network system according to claim 1, it is characterised in that the scraper end communication device includes phase The first inductive coupler and first carrier controller to connect, the main control end communication device include the second electricity being connected with each other Feel coupler and the second carrier controller, wherein, first inductive coupler is described for the facility information to be loaded into Control information is carried on power cable and above and below the power cable, second inductive coupler is used for the control information It is loaded on the power cable and carries the facility information above and below the power cable, andThe first carrier controller is used to provide wireless network, to be gathered from the electric power scraper in the wireless network model Enclose the interior facility information and the control information is sent to the electric power scraper, second carrier controller is used for Cable network is provided, with from the Ethernet switch receive the control information and by the facility information be sent to it is described with Too network switch.
- 3. power line network system according to claim 2, it is characterised in that the Ethernet switch is placed in switchgear house Communication counter in and powered by the communication counter, the main control end of the power cable is arranged in the power distribution cabinet of the switchgear house, The main control end of the power cable is connected by the power distribution cabinet and the communication counter with the Ethernet switch, and described second Carrier controller is powered by the power distribution cabinet.
- 4. power line network system according to claim 1, it is characterised in that the Ethernet switch is as the system The substation of system looped network, while as the main website of the power line network system, for connecting the system looped network and the electric power Line network system.
- 5. power line network system according to claim 2, it is characterised in that first inductive coupler is installed on often On bar power cable and first inductive coupler is connected to the scraper generator terminal of the power cable, and described first carries Wave controller is disposed proximate to the scraper generator terminal, and second inductive coupler is installed on every power cable and described Second inductive coupler is connected to the main control end of the power cable, and second carrier controller is disposed proximate to described Main control end.
- 6. power line network system according to claim 2, it is characterised in that every first inductive coupler is corresponding One first carrier controller, corresponding second carrier controller of every second inductive coupler.
- 7. power line network system according to claim 2, it is characterised in that the scraper end communication device also includes Transformer, the transformer are supplied to the first carrier controller from the power cable power taking and by the voltage after conversion.
- 8. power line network system according to claim 2, it is characterised in that every first inductive coupler is corresponding One first carrier controller, corresponding second carrier controller of more second inductive couplers.
- A kind of 9. work side of the power line network system of the underground mine electric power scraper described in any one of claim 1-8 Method, it is characterised in that including：S1：When the electric power scraper enters route, the scraper end communication device follows the electric power scraper to enter Road；S2：In route operation, the scraper end communication device is set the electric power scraper to electric power scraper collection Standby information, the power cable, the main control end communication device, the Ethernet switch are passed sequentially through by the facility information The system looped network is sent to, control information is passed sequentially through the Ethernet switch, the main control end by the system looped network Communication device, the power cable, the scraper end communication device are sent to the electric power scraper；AndS3：When the electric power scraper machine operation is completed to withdraw route, the scraper end communication device follows the electric power scraper Machine is withdrawn route and is stopped.
- 10. the method for work of power line network system according to claim 9, it is characterised in that the scraper generator terminal is led to The first inductive coupler and first carrier controller that device includes being connected with each other are interrogated, the main control end communication device includes mutual The second inductive coupler and the second carrier controller of connection,Wherein, the Ethernet switch receives control information from the system looped network, and second carrier controller is provided with For gauze network to receive the control information from the Ethernet switch, second inductive coupler adds the control information It is downloaded on the power cable, control information is sent to the first carrier controller, first electricity by the power cable Sense coupler carries the control information above and below the power cable, and the first carrier controller sends the control information To the electric power scraper, andWherein, the first carrier controller provides wireless network, is gathered from the electric power scraper in the wireless network model Interior facility information is enclosed, the facility information is loaded on the power cable by first inductive coupler, the power The facility information is sent to second inductive coupler by cable, and second inductive coupler is from the power cable The facility information is downloaded, the facility information is sent to institute by second carrier controller by the Ethernet switch State system looped network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993826.6A CN107733468B (en) | 2017-10-23 | 2017-10-23 | Power line network system of underground mine electric scraper and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710993826.6A CN107733468B (en) | 2017-10-23 | 2017-10-23 | Power line network system of underground mine electric scraper and working method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN107733468A true CN107733468A (en) | 2018-02-23 |
| CN107733468B CN107733468B (en) | 2023-10-10 |
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| CN201710993826.6A Active CN107733468B (en) | 2017-10-23 | 2017-10-23 | Power line network system of underground mine electric scraper and working method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2815654C1 (en) * | 2023-07-04 | 2024-03-19 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Method for communication provision of tunnels and tunnel communication system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985867U (en) * | 2011-04-19 | 2011-09-21 | 浙江国友通讯设备有限公司 | Mining comprehensive communication command system with private network |
| CN102508471A (en) * | 2011-10-27 | 2012-06-20 | 中国矿业大学 | Device and method for coal mine monitor message transmission based on power lines |
| CN103199922A (en) * | 2013-04-02 | 2013-07-10 | 中国矿业大学 | Coal mining working face communication system based on visible light communication and method thereof |
| US20130191654A1 (en) * | 2012-01-20 | 2013-07-25 | Timothy James Schlichter | Method and system for furnishing power and data from power sourcing equipment to powered device |
-
2017
- 2017-10-23 CN CN201710993826.6A patent/CN107733468B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201985867U (en) * | 2011-04-19 | 2011-09-21 | 浙江国友通讯设备有限公司 | Mining comprehensive communication command system with private network |
| CN102508471A (en) * | 2011-10-27 | 2012-06-20 | 中国矿业大学 | Device and method for coal mine monitor message transmission based on power lines |
| US20130191654A1 (en) * | 2012-01-20 | 2013-07-25 | Timothy James Schlichter | Method and system for furnishing power and data from power sourcing equipment to powered device |
| CN103199922A (en) * | 2013-04-02 | 2013-07-10 | 中国矿业大学 | Coal mining working face communication system based on visible light communication and method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2815654C1 (en) * | 2023-07-04 | 2024-03-19 | Публичное акционерное общество "Северсталь" (ПАО "Северсталь") | Method for communication provision of tunnels and tunnel communication system |
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| Publication number | Publication date |
|---|---|
| CN107733468B (en) | 2023-10-10 |
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