CN109412731B - Mining voice coupling emergency broadcasting terminal device - Google Patents
Mining voice coupling emergency broadcasting terminal device Download PDFInfo
- Publication number
- CN109412731B CN109412731B CN201811519516.1A CN201811519516A CN109412731B CN 109412731 B CN109412731 B CN 109412731B CN 201811519516 A CN201811519516 A CN 201811519516A CN 109412731 B CN109412731 B CN 109412731B
- Authority
- CN
- China
- Prior art keywords
- audio
- module
- unit
- telephone
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 48
- 238000010168 coupling process Methods 0.000 title claims abstract description 48
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 48
- 238000005065 mining Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims description 28
- 238000002955 isolation Methods 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 17
- 239000003245 coal Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention provides a mining voice coupling emergency broadcasting terminal device, which comprises an audio coupling conversion module, an automatic telephone module, a warning module and an audio delay switching module, wherein the automatic telephone module, the warning module and the audio delay switching module are respectively connected with the audio coupling conversion module; the automatic telephone module and the warning module are also respectively connected with the audio delay switching module; the automatic telephone module and the audio coupling conversion module are connected with a plurality of paths of intrinsic safety couplers positioned on the well through telephone lines, and the plurality of paths of intrinsic safety couplers are connected with a program controlled exchanger positioned on the well; the audio coupling conversion module is connected with an underground sound amplifying telephone through an audio line; the audio line is also connected with the audio delay switching module. The invention effectively combines two mutually independent systems of the underground program control exchanger and the underground half duplex communication along the line voice amplifying telephone, and improves the timeliness and the coverage universality of the underground communication in the coal mining process.
Description
Technical Field
The invention belongs to the technical field of mine communication, and particularly relates to a mining voice coupling emergency broadcasting terminal device.
Background
In the coal mining process, communication, broadcasting, scheduling and the like between the underground and the underground directly affect the mining efficiency, order and safety. The communication mode used at present is a program-controlled telephone based on PBX or a network telephone based on VOIP system. However, the underground environment is noisy, the mobility of personnel is high, and the telephone on the well cannot be timely answered or the personnel to be contacted cannot be found after answering. Moreover, if an emergency occurs underground, the related personnel can not establish a call with the underground in time when the related personnel are far away from the telephone. In addition, the underground personnel cannot directly broadcast the whole underground belt or working surface comprehensively through the traditional telephone, and only the primary-level downward transmission is realized.
Disclosure of Invention
In view of the above, the invention aims to provide a mining voice coupling emergency broadcast terminal device so as to solve the problem of inconvenient communication between the underground and the uphole.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a mining voice coupling emergency broadcasting terminal device comprises an audio coupling conversion module, an automatic telephone module, a warning module and an audio delay switching module, wherein the automatic telephone module, the warning module and the audio delay switching module are respectively connected with the audio coupling conversion module; the automatic telephone module and the warning module are also respectively connected with the audio delay switching module; the automatic telephone module and the audio coupling conversion module are connected with a plurality of paths of intrinsic safety couplers positioned on the well through telephone lines, and the plurality of paths of intrinsic safety couplers are connected with a program controlled exchanger positioned on the well; the audio coupling conversion module is connected with an underground sound amplifying telephone through an audio line; the audio line is also connected with the audio delay switching module.
Further, the audio coupling conversion module comprises an MCU unit, a manual switching unit, a DTMF unit, a ringing signal detection unit, a full/half duplex audio conversion unit, a specific frequency detection unit and an audio isolation coupling unit; the MCU unit is respectively connected with the manual switching unit, the DTMF unit, the ringing signal detection unit, the full/half duplex audio conversion unit and the specific frequency detection unit, and the full/half duplex audio conversion unit and the specific frequency detection unit are also respectively connected with an audio isolation coupling unit; the DTMF unit and the ringing signal detection unit are respectively connected with the telephone line; the automatic telephone module, the audio delay switching module and the warning module are respectively connected with the MCU unit; the audio isolation coupling unit is connected with the public address telephone through the audio line.
Further, the manual switching unit comprises an independent key, and the independent key is connected with the MCU unit; the DTMF unit is composed of MT8880 chip; the ringing signal detection unit is a circuit formed by a rectifying circuit, a filter circuit, a voltage stabilizing circuit and an optical coupler and is used for converting an alternating current signal into a square wave signal; the full/half duplex audio conversion unit comprises an audio switching circuit for converting between half duplex and full duplex; the specific frequency detection unit comprises a shaping circuit, and the MCU detects square wave signals with the frequency of 700Hz after shaping; the audio coupling unit includes an audio coupling transformer.
Further, the audio delay switching module comprises a relay delay circuit.
Further, the automatic telephone module comprises a main control board, an OLED screen, a dial keyboard, a handle and a loudspeaker, wherein the OLED screen, the dial keyboard, the handle and the loudspeaker are connected with the main control board.
Further, the device also comprises a rechargeable battery, and the rechargeable battery provides electric energy for the device when the power supply cannot be provided due to underground power failure or accidents such as faults and accidents.
Further, the warning module comprises a warning lamp.
Compared with the prior art, the mining voice coupling emergency broadcast terminal device has the following advantages:
(1) The invention effectively combines the two mutually independent systems of the existing well program controlled exchanger and the underground half duplex communication along the line voice amplifying telephone without paving a new system, thereby saving raw materials and improving the utilization rate of equipment. Thus, the timeliness of communication between the underground and the uphole in the coal mining process and the coverage universality are improved, and the method is also a production requirement for high efficiency and safety of the coal mine.
(2) The invention comprises an OLED screen, a loudspeaker and a warning lamp. The OLED screen is used for displaying incoming calls and dialing numbers, so that incorrect dialing in an underground environment with darker light is avoided, and a calling party can be known in advance when an incoming call is received; the maximum sound intensity of the loudspeaker can reach 95dB, and the work of nearby busy workers is not influenced; the flashing warning lamp is clearly visible in the underground dark environment within 100 meters, so that workers nearby in the underground noisy environment can more easily find whether an incoming call exists.
(3) The invention comprises a rechargeable battery, and when the power supply can not be provided along the line due to underground power failure or accidents such as faults and accidents, the invention can still be normally used, thereby providing convenience conditions for underground timely communication, emergency rescue and the like.
(4) The invention comprises a manual switching function along the line, an automatic answering function along the line, a one-key dialing function along the line, an automatic on-hook function along the line, automatic answering times along the line, ringing times of automatic answering along the line and a one-key dialing number remote setting function, thereby effectively improving the communication efficiency and the equipment utilization rate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of an embodiment of the present invention;
Fig. 2 is a schematic connection diagram of an audio coupling conversion module according to an embodiment of the present invention;
FIG. 3 is a system application diagram of an embodiment of the present invention;
fig. 4 is a circuit diagram of a ring signal detecting unit according to an embodiment of the present invention;
fig. 5 is a schematic block diagram of a full/half duplex audio conversion unit according to an embodiment of the present invention;
fig. 6 is a block diagram of an automatic phone module according to an embodiment of the present invention;
FIG. 7 is a circuit diagram of an audio delay switching module according to an embodiment of the invention;
Reference numerals illustrate:
1-an audio coupling conversion module; 2-a warning module; 3-an audio delay switching module; 4-an automatic phone module; 5-multipath intrinsic safety coupler; 6-program controlled exchange; 7-telephone set; 8-mining intrinsic safety telephone; 9-public address telephone; 10-communication controller.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 and 2, the mining voice coupling emergency broadcast terminal device comprises an audio coupling conversion module 1, and a warning module 2, an audio delay switching module 3 and an automatic telephone module 4 which are respectively connected with the audio coupling conversion module 1, wherein the automatic telephone module 4 and the warning module 2 are also respectively connected with the audio delay switching module 3. The audio coupling conversion module 1 comprises an MCU unit, a manual switching unit, a DTMF unit, a ringing signal detection unit, a full/half duplex audio conversion unit, a specific frequency detection unit and an audio isolation coupling unit; the MCU unit is respectively connected with the manual switching unit, the DTMF unit, the ringing signal detection unit, the full/half duplex audio conversion unit and the specific frequency detection unit, and the full/half duplex audio conversion unit and the specific frequency detection unit are also respectively connected with an audio isolation coupling unit. The automatic telephone module 4, the audio delay switching module 3 and the warning module 2 are respectively connected with the MCU unit.
When the invention is applied in the underground, the DTMF unit, the ringing signal detection unit and the automatic telephone module 4 are all connected with telephone lines, as shown in figure 3, the telephone lines are connected with a plurality of paths of intrinsic safety couplers 5 positioned on the well, the paths of intrinsic safety couplers 5 are connected with a program control exchanger 6 positioned on the well through telephone lines, the program control exchanger 6 is connected with a plurality of telephone sets 7 positioned on the well, and the plurality of paths of intrinsic safety devices An Ouge are also connected with mining intrinsic safety telephones 8 positioned under the well; the audio frequency isolation coupling unit is connected with a plurality of sound amplifying telephones 9 through audio frequency wires, the audio frequency wires are also connected with an audio frequency delay switching module 3, the last sound amplifying telephone 9 is also connected with a communication controller 10 for controlling and displaying the state of the sound amplifying telephone 9, and the communication controller 10 is specifically a KTC101-Z mining flameproof and intrinsically safe controller.
The manual switching unit comprises independent keys, and after the keys are pressed, the MCU unit switches incoming call audio signals to the audio line of the half-duplex underground public address telephone.
The DTMF unit is a circuit formed by MT8880 chip.
The circuit diagram of the ringing signal detection unit is shown in fig. 4, tel_ A, TEL _b is an ac ringing signal input, and the ac ringing signal is finally converted into a dc voltage signal after rectification, filtering and voltage stabilization to control the switch of the optocoupler P1, so that a square wave signal is formed on the bell_check pin of the optocoupler, and thus, each time the ringing signal is converted into a square wave signal for detection by the MCU, and the MCU can identify the number of ringing times by detecting the number of square waves.
The schematic block diagram of the full/half duplex audio conversion unit is shown in fig. 5, and the full/half duplex audio conversion unit comprises an audio switching circuit, wherein the audio switching circuit is connected to the MCU through an I/O port of the MCU, the MCU judges whether a person speaks or not by detecting whether an audio signal exceeds a set threshold value, when the person speaks, the audio is coupled to a full duplex Speaker through the audio switching circuit, and when the person speaks, the default audio is coupled to the full duplex MIC.
The specific frequency detection unit comprises a shaping circuit, and the MCU detects square wave signals with the frequency of 700Hz after shaping.
The audio isolation coupling unit comprises an audio coupling transformer, and the audio isolation and coupling functions are achieved through the audio coupling transformer.
As shown in fig. 6, the automatic phone module 4 includes a main control board, and an OLED screen, a dial keypad, a handle, and a speaker connected to the main control board, where the OLED screen is used to display the caller number and the dial number, so that incorrect dialing in a dark environment is avoided, and meanwhile, the caller number can be known in advance when a call is coming.
Fig. 7 is a circuit diagram of an audio delay switching module 3, and an RC delay circuit is applied to control the on/off of an electronic relay RL1 through a mos tube G1, so that an audio line is switched between audio 1 and audio 2, and the multiplexing effect of a ringing sound function and a voice amplifying telephone function of a speaker during incoming call is achieved. The speaker emits ringing sounds when an incoming call is made, and when the telephone of the landline telephone on the well and the underground public address telephone are in communication, the audio delay switching module switches the audio of the speaker to the audio of the line so that the audio of the speaker becomes a part of the public address telephone along the line.
The warning module 2 is connected with the MCU unit and comprises a warning lamp, when the telephone of the landline telephone on the well calls, the warning lamp flashes, the warning lamp keeps on after being connected, the warning lamp is turned off after hanging up, and meanwhile, when the telephone of the landline telephone on the well calls, the ringing sound emitted by the loudspeaker in the automatic telephone module can also play a role in warning. The maximum sound intensity of the loudspeaker can reach 95dB, the working of nearby busy workers is not affected, and the flickering warning lamp is visible in the range of 100 meters in the underground dark environment, so that nearby workers can find whether an incoming call exists or not more easily in the underground noisy environment.
In addition, the mining voice coupling emergency broadcast terminal device is provided with a rechargeable battery, and can be normally used when power is not supplied along the line due to underground power failure or accidents such as faults and accidents.
The mining voice coupling emergency broadcasting terminal device comprises the following functions:
Manual switching function along line: after the telephone of the telephone set on the well is communicated with the automatic telephone set module, the independent key of the manual switching unit is pressed, and the MCU unit realizes the communication between the telephone set on the well and the underground public address telephone set by controlling the full/half duplex audio conversion unit and the audio isolation coupling unit.
Automatic answering function along line: when the telephone is called, an alternating-current ringing signal is generated on the telephone line, the ringing signal detection unit converts the alternating-current ringing signal into a square wave signal and transmits the square wave signal to the MCU unit, the MCU unit judges the ringing times by detecting the number of the square waves, and when the ringing times reach the set times, no one can answer the call, the function of automatically establishing the passing of the telephone on the well and the underground public address telephone is realized.
One-touch dialing function along line: the underground voice amplifying telephone comprises an early warning button, and when the early warning button is pressed for 2 seconds, the one-key dialing function is realized. When the early warning button is pressed, a square wave with specific frequency is generated on the audio line, when the specific frequency detection unit detects the square wave with the specific frequency, a signal is transmitted to the MCU unit, and when the specific frequency detection unit detects that the continuous early warning is up to 2 seconds, the MCU unit sets the DTMF unit to be in a DTMF transmission mode, and the automatic broadcasting of the pre-stored number is realized, so that the function of directly establishing a call with the telephone of the telephone set on the well by the underground public address telephone is realized.
Automatic on-hook function along line: after the telephone of the telephone set on the well and the underground public address telephone are finished in communication and actively hung up, when the DTMF unit detects a busy tone signal, the signal is transmitted to the MCU unit, so that the automatic hanging up is realized, and the condition that the telephone set is not affected in the next communication is ensured.
The number of ringing times automatically answered along the line and the one-key dialing number can be remotely set with the functions: when the telephone is called, the MCU unit sets the DTMF unit to be in a DTMF receiving mode, and the telephone can remotely set the ringing times and the one-key dialing number which are automatically answered at the moment and store the ringing times and the one-key dialing number in the MCU unit.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. Mining pronunciation coupling emergency broadcast terminal device, its characterized in that: the system comprises an audio coupling conversion module, an automatic telephone module, a warning module and an audio delay switching module, wherein the automatic telephone module, the warning module and the audio delay switching module are respectively connected with the audio coupling conversion module; the automatic telephone module and the warning module are also respectively connected with the audio delay switching module; the automatic telephone module and the audio coupling conversion module are connected with a plurality of paths of intrinsic safety couplers positioned on the well through telephone lines, and the plurality of paths of intrinsic safety couplers are connected with a program controlled exchanger positioned on the well; the audio coupling conversion module is connected with an underground sound amplifying telephone through an audio line; the audio line is also connected with the audio delay switching module;
the audio coupling conversion module comprises an MCU unit, a manual switching unit, a DTMF unit, a ringing signal detection unit, a full/half duplex audio conversion unit, a specific frequency detection unit and an audio isolation coupling unit; the MCU unit is respectively connected with the manual switching unit, the DTMF unit, the ringing signal detection unit, the full/half duplex audio conversion unit and the specific frequency detection unit, and the full/half duplex audio conversion unit and the specific frequency detection unit are also respectively connected with an audio isolation coupling unit; the DTMF unit and the ringing signal detection unit are respectively connected with the telephone line; the automatic telephone module, the audio delay switching module and the warning module are respectively connected with the MCU unit; the audio isolation coupling unit is connected with the public address telephone through the audio line;
the automatic telephone module comprises a main control board, an OLED screen, a dial keyboard, a handle and a loudspeaker, wherein the OLED screen, the dial keyboard, the handle and the loudspeaker are connected with the main control board;
The audio delay switching module comprises a relay delay circuit; when the telephone of the base telephone on the well and the underground public address telephone establish a call, the audio delay switching module switches the audio of the loudspeaker to the audio along the line so that the loudspeaker becomes a part of the public address telephone along the line;
The manual switching unit comprises an independent key, and the independent key is connected with the MCU unit; after the key is pressed, the MCU unit switches the incoming call audio signal to the audio line of the half-duplex underground voice amplifying telephone.
2. The mining voice-coupled emergency broadcast terminal device of claim 1, wherein: the DTMF unit is composed of MT8880 chip; the ringing signal detection unit is a circuit formed by a rectifying circuit, a filter circuit, a voltage stabilizing circuit and an optical coupler and is used for converting an alternating current signal into a square wave signal; the full/half duplex audio conversion unit comprises an audio switching circuit for converting between half duplex and full duplex; the specific frequency detection unit comprises a shaping circuit, and the MCU detects square wave signals with the frequency of 700Hz after shaping; the audio coupling unit includes an audio coupling transformer.
3. The mining voice-coupled emergency broadcast terminal device of claim 1, wherein: the device also comprises a rechargeable battery, and the rechargeable battery provides electric energy for the device when the power supply cannot be provided due to underground power failure or accidents such as faults and accidents.
4. The mining voice-coupled emergency broadcast terminal device of claim 1, wherein: the warning module comprises a warning lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519516.1A CN109412731B (en) | 2018-12-12 | 2018-12-12 | Mining voice coupling emergency broadcasting terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519516.1A CN109412731B (en) | 2018-12-12 | 2018-12-12 | Mining voice coupling emergency broadcasting terminal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109412731A CN109412731A (en) | 2019-03-01 |
| CN109412731B true CN109412731B (en) | 2024-04-30 |
Family
ID=65458727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811519516.1A Active CN109412731B (en) | 2018-12-12 | 2018-12-12 | Mining voice coupling emergency broadcasting terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109412731B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110620897B (en) * | 2019-09-30 | 2021-02-02 | 国网山东省电力公司信息通信公司 | Multifunctional telephone conference system and method |
| CN113840027A (en) * | 2021-08-25 | 2021-12-24 | 杭州蛟洋通信科技有限公司 | Special public address telephone system for coal mine |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113985A (en) * | 1975-06-09 | 1978-09-12 | Gai-Tronics Corporation | Mine dial and page phone system |
| EP1944957A2 (en) * | 2007-01-12 | 2008-07-16 | Scanner Chen | System and method for selectively coupling various communication devices through common channel |
| CN201797543U (en) * | 2010-09-17 | 2011-04-13 | 徐州中矿大华洋通信设备有限公司 | Digital mining amplified telephone terminal |
| CN102493835A (en) * | 2011-12-23 | 2012-06-13 | 济南矿安电气有限公司 | Mine safety production monitoring system |
| CN202634540U (en) * | 2012-07-05 | 2012-12-26 | 天津华宁电子有限公司 | Mining double audio frequency telephone switchboard communication system |
| CN202818316U (en) * | 2012-06-11 | 2013-03-20 | 徐州中矿大华洋通信设备有限公司 | Coal mine emergency rescue broadcasting and sound amplifying communication system |
| CN203086483U (en) * | 2013-01-14 | 2013-07-24 | 常州联力自动化科技有限公司 | A mine broadcasting system based on a telephone exchange |
| CN204498140U (en) * | 2015-03-23 | 2015-07-22 | 邹文谦 | A kind of mining schedule broadcast video fusion communication system |
| CN105025181A (en) * | 2014-04-30 | 2015-11-04 | 张鹏 | Mining intelligent voice communication apparatus |
| CN204859455U (en) * | 2015-09-01 | 2015-12-09 | 中煤科工集团重庆研究院有限公司 | Mining intercommunication telephone of public address in pit and dispatching telephone inter working unit |
| CN105610564A (en) * | 2015-12-25 | 2016-05-25 | 中国矿业大学 | Mining intrinsic safety type bidirectional digital audio broadcasting system and related hardware architecture thereof |
| CN208939971U (en) * | 2018-12-12 | 2019-06-04 | 天津华宁电子有限公司 | Mining voice couples emergent broadcast terminal installation |
-
2018
- 2018-12-12 CN CN201811519516.1A patent/CN109412731B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113985A (en) * | 1975-06-09 | 1978-09-12 | Gai-Tronics Corporation | Mine dial and page phone system |
| EP1944957A2 (en) * | 2007-01-12 | 2008-07-16 | Scanner Chen | System and method for selectively coupling various communication devices through common channel |
| CN201797543U (en) * | 2010-09-17 | 2011-04-13 | 徐州中矿大华洋通信设备有限公司 | Digital mining amplified telephone terminal |
| CN102493835A (en) * | 2011-12-23 | 2012-06-13 | 济南矿安电气有限公司 | Mine safety production monitoring system |
| CN202818316U (en) * | 2012-06-11 | 2013-03-20 | 徐州中矿大华洋通信设备有限公司 | Coal mine emergency rescue broadcasting and sound amplifying communication system |
| CN202634540U (en) * | 2012-07-05 | 2012-12-26 | 天津华宁电子有限公司 | Mining double audio frequency telephone switchboard communication system |
| CN203086483U (en) * | 2013-01-14 | 2013-07-24 | 常州联力自动化科技有限公司 | A mine broadcasting system based on a telephone exchange |
| CN105025181A (en) * | 2014-04-30 | 2015-11-04 | 张鹏 | Mining intelligent voice communication apparatus |
| CN204498140U (en) * | 2015-03-23 | 2015-07-22 | 邹文谦 | A kind of mining schedule broadcast video fusion communication system |
| CN204859455U (en) * | 2015-09-01 | 2015-12-09 | 中煤科工集团重庆研究院有限公司 | Mining intercommunication telephone of public address in pit and dispatching telephone inter working unit |
| CN105610564A (en) * | 2015-12-25 | 2016-05-25 | 中国矿业大学 | Mining intrinsic safety type bidirectional digital audio broadcasting system and related hardware architecture thereof |
| CN208939971U (en) * | 2018-12-12 | 2019-06-04 | 天津华宁电子有限公司 | Mining voice couples emergent broadcast terminal installation |
Non-Patent Citations (2)
| Title |
|---|
| Intelligent Mining Technology for an Underground Metal Mine Based on Unmanned Equipment;Jian-guo Li;《Engineering》;全文 * |
| 应急广播系统在云驾岭煤矿的应用;郭志谦;;煤炭与化工(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109412731A (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4088846A (en) | Hold-plus-intercom for single-line stations | |
| KR101650357B1 (en) | Emergency call device and method including radio access unit for emergency call | |
| CN109412731B (en) | Mining voice coupling emergency broadcasting terminal device | |
| US20120220303A1 (en) | Stationary wireless terminal and switching method for automatically switching communication lines | |
| CN202617224U (en) | Integrated telephone set | |
| CN202634540U (en) | Mining double audio frequency telephone switchboard communication system | |
| CN208939971U (en) | Mining voice couples emergent broadcast terminal installation | |
| CN209402576U (en) | A kind of coal mine expansion telephone call screener system | |
| CN108513021A (en) | A kind of elevator private communication method | |
| CN201682546U (en) | Conversation adapter | |
| JP2010231581A (en) | Maintenance phone for fire alarm facilities | |
| CN212893306U (en) | Elevator remote intercom device and system | |
| JP2637087B2 (en) | Telephone system | |
| CN210490944U (en) | Fixed wireless telephone with extension interface | |
| CN105450820A (en) | Method and system for establishing push-to-talk hands-free call | |
| US8463257B1 (en) | System for redirecting cellular phone calls to conventional landline handsets | |
| JPS6349960B2 (en) | ||
| CN215871524U (en) | Non-extension remote-end call reporting device | |
| CN202551265U (en) | Talkback main unit for elevator | |
| TWI784425B (en) | Non-extension type remote call notification device | |
| CN209572014U (en) | High reliability elevator intercom system | |
| CN2378887Y (en) | Arrangement for transferring received calls | |
| RU158873U1 (en) | DEVICE FOR REMOTE CONTROL OF RADIO COMMUNICATION MEANS OR "UPOR" ALARMS | |
| KR101325720B1 (en) | A Different Terminal Device Integrated Communication Service Apparatus | |
| KR970005261B1 (en) | Re-dial method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |