CN202034985U - Underground optical fiber emergency communication system for mine - Google Patents
Underground optical fiber emergency communication system for mine Download PDFInfo
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- CN202034985U CN202034985U CN2011201427063U CN201120142706U CN202034985U CN 202034985 U CN202034985 U CN 202034985U CN 2011201427063 U CN2011201427063 U CN 2011201427063U CN 201120142706 U CN201120142706 U CN 201120142706U CN 202034985 U CN202034985 U CN 202034985U
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Abstract
The utility model provides an underground optical fiber emergency communication system for a mine, which comprises an aboveground sub system and an underground sub system, wherein the aboveground sub system and the underground sub system are connected through an optical fiber, the aboveground sub system comprises an aboveground telephone, a numerical control system upper computer and a control exchanger which are sequentially connected in series, the numerical control system upper computer is used for communicating the operation selection of an underground passive telephone, the control exchanger is used for the photoelectric conversion of voice signals between the aboveground telephone and the underground passive telephone, and the underground sub system comprises the underground passive telephone. The underground optical fiber emergency communication system for the mine provided by the utility model adopts optical fibers for transmitting signals, and the underground optical fiber emergency communication system for the mine can still smoothly operate under the emergent conditions such as unexpected power failure, mine water leakage, gas burst, gas explosion, gas standard exceeding, collapse and the like.
Description
Technical field
The utility model relates to a kind of communication system, relates in particular to a kind of mining downhole optic fiber emergency communication system.
Background technology
In recent years, along with rapid growth of economy, the China's coal-mine cause is also more and more prosperous, entered into the economic development fast road of a high investment, high efficiency, high production, yet but still the situation is tense for Safety of Coal Mine Production, accident of mine disaster takes place frequently, and has caused great loss for the country and people's life peace property safety, has environmentally safely constituted great threat.The China's coal-mine overwhelming majority is Jing Gongkuangjing, the geological conditions complexity, and the disaster type is many, it is wide to distribute, and depositing multiple disaster sources such as liquid level, methane gas, spontaneous fire, coal dust, top board, bump, heating, mining conditions is the poorest in each main producing coal country of the world, disaster is the most serious.Though in mine, equipped equipment such as real time on-line monitoring early warning system at present, still had coal mining accident to take place.So want to ensure people's livelihood safety to a greater extent, the difficult back of equipment rescue system in mine, passive commander, guide communication system, emergency escape, rescue measure have been the most important thing after the reinforcement calamity.
Mining down-hole of the prior art emergency communication system adopts the cable transmission signal; during emergencies such as mine is permeable when occurring, gas is outstanding, gas explosion, gas exceed standard, subside; usually can cut off the electricity supply; cause unexpected power failure and in emergency circumstances above-mentioned, can not ensure the unobstructed of mining down-hole emergency communication system.
The utility model content
At the defective of prior art, the utility model provides a kind of mining downhole optic fiber emergency communication system.
The mining downhole optic fiber emergency communication system that the utility model provides comprises:
Aboveground subsystem and down-hole subsystem, described aboveground subsystem is connected by optical fiber with described down-hole subsystem;
Described aboveground subsystem comprises aboveground phone, digital control system host computer and the control switch of series connection successively, described digital control system host computer is used to control the selection of the conversation of connecting the passive phone in down-hole, and described control switch is used for the opto-electronic conversion of voice signal between the passive phone of described aboveground phone and described down-hole;
Described down-hole subsystem comprises the passive phone in described down-hole;
Wherein, described control switch comprises light signal modulation module, optic fiber amplifying module, the first light signal demodulation module, LASER Light Source, described light signal modulation module is connected with described optic fiber amplifying module, described optic fiber amplifying module is connected with first splitter, described light signal modulation module is connected with described digital control system host computer, one end of the described first light signal demodulation module is connected with described digital control system host computer, the other end of the described first light signal demodulation module is connected with described first splitter, and described LASER Light Source is connected with described first splitter;
The passive phone in described down-hole comprises the second light signal demodulation module, earphone module, voltage ring module, optical fiber microphone, wherein, described optical fiber microphone is connected with second splitter respectively with the described second light signal demodulation module, and described earphone module is connected with the described second light signal demodulation module respectively with described voltage ring module.
Aforesaid mining downhole optic fiber emergency communication system, wherein, described light signal modulation module comprises audio driven module, frequency modulation module, the light source driver module of series connection successively; The described first light signal demodulation module comprises the first photodetection module, first filter circuit, first amplifying circuit of series connection successively; The described second light signal demodulation module comprises the second photodetection module, second filter circuit, second amplifying circuit of series connection successively.
Aforesaid mining downhole optic fiber emergency communication system, wherein, described down-hole subsystem comprises the passive phone in a plurality of described down-holes; Described control switch comprises a plurality of described first light signal demodulation modules, a plurality of described light signal modulation module, a plurality of described optic fiber amplifying module, a plurality of described LASER Light Source, and the number of the described first light signal demodulation module that the number of the passive phone in described down-hole that wherein said down-hole subsystem comprises and described control switch comprise, described light signal modulation module, described optic fiber amplifying module, described LASER Light Source is the same; Described control switch also comprises a programme-controlled exchange module, one end of described programme-controlled exchange module is connected with all described light signal modulation module, the other end of described programme-controlled exchange module is connected with described digital control system host computer, and the conversation that is used for the passive phone in described down-hole is selected.
Aforesaid mining downhole optic fiber emergency communication system, wherein, described control switch also comprises a recording module, be used to write down the actual sound situation of down-hole, one end of described recording module is connected with the described first light signal demodulation module, and the other end of described recording module is connected with described digital control system host computer.
Aforesaid mining downhole optic fiber emergency communication system, wherein, the described second light signal demodulation module also comprises the voltage decision circuitry, is used to detect the voltage of the passive phone in described down-hole, and judges the relation of detected voltage and pre-set threshold.
Aforesaid mining downhole optic fiber emergency communication system, wherein, the passive phone in described down-hole is provided with the ring indicating device, is connected with described voltage ring module, is used to show the ring picture.
Aforesaid mining downhole optic fiber emergency communication system, wherein, the optical fiber hydraulic quick coupler is all installed at described optical fiber two ends.
The mining downhole optic fiber emergency communication system that the utility model provides adopts optical fiber transmission signal, unexpected have a power failure and mine is permeable, gas is given prominence to, gas explosion, gas exceed standard, subside etc. in emergency circumstances, mining downhole optic fiber emergency communication system still can unobstructedly move.
Description of drawings
Fig. 1 is the mining downhole optic fiber emergency communication system of a utility model connection layout;
Fig. 2 is the structural representation of the utility model light signal modulation module 31;
Fig. 3 is the structural representation of the utility model first light signal demodulation module 33;
Fig. 4 is the structural representation of the utility model second light signal demodulation module 44.
Embodiment
Further specify the technical scheme of the utility model embodiment below in conjunction with the drawings and specific embodiments.
Fig. 1 is the mining downhole optic fiber emergency communication system of a utility model connection layout, as described in Figure 1, this system comprises aboveground subsystem and down-hole subsystem, aboveground subsystem is connected by optical fiber with the down-hole subsystem, preferred scheme is that the optical fiber hydraulic quick coupler is all installed at the optical fiber two ends, can change fast the optical fiber that damages; Aboveground subsystem comprises aboveground phone 1, digital control system host computer 2 and the control switch 3 of series connection successively, digital control system host computer 2 is used to control the selection of the conversation of connecting the passive phone 4 in down-hole, and control switch 3 is used for the opto-electronic conversion of voice signal between the passive phone 4 of aboveground phone 1 and down-hole; The down-hole subsystem comprises the passive phone 4 in down-hole;
Wherein, control switch 3 comprises light signal modulation module 31, optic fiber amplifying module 32, the first light signal demodulation module 33, LASER Light Source 34, light signal modulation module 31 is connected with optic fiber amplifying module 32, optic fiber amplifying module 32 is connected with first splitter 5, light signal modulation module 31 is connected with digital control system host computer 2, one end of the first light signal demodulation module 33 is connected with digital control system host computer 2, the other end of the first light signal demodulation module 33 is connected with first splitter 5, and LASER Light Source 34 is connected with first splitter;
The passive phone 4 in down-hole comprises the second light signal demodulation module 44, earphone module 41, voltage ring module 42, optical fiber microphone 43, wherein, optical fiber microphone 43 is connected with second splitter 6 respectively with the second light signal demodulation module 44, and earphone module 41 is connected with the second light signal demodulation module 44 respectively with voltage ring module 42.
The work of the mining downhole optic fiber emergency communication system that the utility model provides specifically comprise the passive phone in down-hole 4 as and the originating end of aboveground phone 1 conversation and aboveground phone 1 as with two aspects of originating end of passive phone 4 conversations in down-hole, its operation principle is described below respectively:
The passive phone in down-hole 4 as with the originating end of aboveground phone 1 conversation: the sound light signal of passive phone 4 outputs in down-hole by Optical Fiber Transmission to second splitter 6, light signal is transferred to first demodulation module through optical fiber, first splitter 5 successively, first demodulation module converts light signal to the signal of telecommunication, the signal of telecommunication is transferred on the digital control system host computer 2, be transferred to aboveground phone 1 through digital control system host computer 2 signals of telecommunication, aboveground personnel just can hear the sound of passive phone 4 outputs in down-hole by aboveground phone 1;
Aboveground phone 1 as with the originating end of passive phone 4 conversations in down-hole: aboveground personnel pick up the microphone of aboveground phone 1, on the display of digital control system host computer 2, select to connect the operation of the passive phone 4 in down-hole simultaneously, the operation electrical signal transfer is given light signal modulation module 31, light signal modulation module 31 converts the electrical signal to light signal, the light signal that process optic fiber amplifying module 32 amplifies is successively through first splitter 5, optical fiber, second splitter 6 is transferred to the second light signal demodulation module 44, the second light signal demodulation module 44 is converted to the signal of telecommunication with light signal, the signal of telecommunication is transferred to voltage ring module 42, voltage ring module 42 jingle bells, the personnel in the pit is facing to optical fiber microphone 43 speeches of the passive phone 4 in down-hole, the sound light signal that optical fiber microphone 43 transfers out by Optical Fiber Transmission to second splitter 6, light signal passes through optical fiber successively, first splitter 5 is transferred to the first light signal demodulation module 33, the first light signal demodulation module 33 converts light signal to the signal of telecommunication, the signal of telecommunication is transferred on the digital control system host computer 2, be transferred to aboveground phone 1 through digital control system host computer 2 signals of telecommunication, aboveground personnel just can hear the sound of passive phone 4 outputs in down-hole by aboveground phone 1;
Particularly, the sound process of light signal of the passive phone 4 in down-hole is such: the light that LASER Light Source 34 is sent is incident on the diaphragm in the passive phone 4 in down-hole through first splitter 5, optical fiber, second splitter 6 successively, the sound of down-hole is input to the vibration that the passive phone 4 in down-hole causes the inside diaphragm of the passive phone 4 in down-hole, be incident on light on the diaphragm along with the different vibration of diaphragm, can produce different reverberation, reverberation is the sound light signal that the passive phone 4 in down-hole sends.
By above-mentioned technical scheme as can be known, the mining downhole optic fiber emergency communication system that the utility model provides adopts optical fiber transmission signal, unexpected have a power failure and mine is permeable, gas is given prominence to, gas explosion, gas exceed standard, subside etc. in emergency circumstances, mining downhole optic fiber emergency communication system still can unobstructedly move.
Above-mentioned technical scheme can also realize the diagnosis of self diagnosis circuit on-off, signal strength signal intensity, if optical fiber has broken or not enough through the signal strength signal intensity after the Optical Fiber Transmission, even aboveground personnel speak to the personnel in the pit, can not hear personnel in the pit's response.
Particularly, Fig. 2, Fig. 3, Fig. 4 are respectively the structural representation of the utility model light signal modulation module 31, the structural representation of the utility model first light signal demodulation module 33, the structural representation of the utility model second light signal demodulation module 44, as Fig. 2, Fig. 3, shown in Figure 4, light signal modulation module 31 comprises audio driven module 311, frequency modulation module 312, the light source driver module 313 of series connection successively; The first light signal demodulation module 33 comprises the first photodetection module 331, first filter circuit 332, first amplifying circuit 333 of series connection successively; The second light signal demodulation module 44 comprises the second photodetection module 441, second filter circuit 442, second amplifying circuit 443 of series connection successively.
Technique scheme at be the situation that the down-hole subsystem includes only a passive phone 4 in down-hole, the down-hole subsystem can also comprise the passive phone 4 in a plurality of down-holes, control switch 3 comprises a plurality of first light signal demodulation modules 33, a plurality of light signal modulation module 31, a plurality of optic fiber amplifying module 32, a plurality of LASER Light Source 34, and wherein the number of the passive phone 4 in down-hole that comprises of down-hole subsystem is the same with the number of controlling the first light signal demodulation module 33 that switch 3 comprises, light signal modulation module 31, optic fiber amplifying module 32, LASER Light Source 34; Control switch 3 also comprises a programme-controlled exchange module, and an end of programme-controlled exchange module is connected with all light signal modulation modules 31, and the other end of programme-controlled exchange module is connected with digital control system host computer 2, and the conversation that is used for the passive phone 4 in down-hole is selected.The down-hole subsystem comprises that the work of system under passive phone 4 situations in a plurality of down-holes comprises following three aspects: the passive phone in down-hole 4 as with the originating end of aboveground phone 1 conversation, aboveground phone 1 as with the originating end of passive phone 4 conversations in down-hole, the communication between the passive phone 4 in down-hole.Wherein, the passive phone in down-hole 4 as with the originating end situation of aboveground phone 1 conversation under operation principle can comprise with reference to the down-hole subsystem and the description of the operation principle under the corresponding situation of mining downhole optic fiber emergency communication system of a passive phone 4 in down-hole repeat no more herein.Introduce the operation principle of mining downhole optic fiber emergency communication system under other two kinds of situations below:
Aboveground phone 1 as with the originating end of passive phone 4 conversations in down-hole: aboveground personnel pick up the microphone of aboveground phone 1, on the display of digital control system host computer 2, select to connect the operation of the passive phone 4 in down-hole simultaneously, the operation electrical signal transfer is given the programme-controlled exchange module, the signal of telecommunication that spreads out of from the programme-controlled exchange module be transferred to by the corresponding light signal modulation module 31 of the passive phone in originating end down-hole 4, this light signal modulation module 31 converts the electrical signal to light signal, through with the light signal that is amplified by the corresponding optic fiber amplifying module 32 of the passive phone in originating end down-hole 4 pass through successively with by the first corresponding splitter 5 of the passive phone in originating end down-hole 4, optical fiber, with be transferred to by the second corresponding splitter 6 of the passive phone in originating end down-hole 4 with by the second corresponding light signal demodulation module 44 of the passive phone in originating end down-hole 4, this second light signal demodulation module 44 is converted to the signal of telecommunication with light signal, the signal of telecommunication be transferred to by the corresponding voltage ring module 42 of the passive phone in originating end down-hole 4, these voltage ring module 42 jingle bells, the personnel in the pit is facing to being talked by the passive phone 4 in originating end down-hole, the sound light signal that the passive phone 4 in this down-hole transfers out by Optical Fiber Transmission to by the second corresponding splitter 6 of the passive phone in originating end down-hole 4, light signal passes through optical fiber successively, with be transferred to by the first corresponding splitter 5 of the passive phone in originating end down-hole 4 with by the first corresponding demodulation module of the passive phone in originating end down-hole 4, this first demodulation module converts light signal to the signal of telecommunication, the signal of telecommunication is transferred on the digital control system host computer 2, be transferred to aboveground phone 1 through digital control system host computer 2 signals of telecommunication, aboveground personnel just can hear by the sound of passive phone 4 outputs in originating end down-hole by aboveground phone 1;
Communication between the passive phone 4 in down-hole: the personnel in the pit speaks facing to the passive phone 4 in originating end down-hole, the sound light signal that is transferred out by the passive phone 4 in this down-hole passes through second splitter 6 corresponding with the passive phone in originating end down-hole 4 successively, optical fiber, first splitter 5 corresponding with the passive phone in originating end down-hole 4 is transferred to the first light signal demodulation module 33 corresponding with the passive phone in originating end down-hole 4, this first light signal demodulation module 33 converts light signal to the signal of telecommunication, the signal of telecommunication is transferred on the digital control system host computer 2, on the display of digital control system host computer 2, show to connect by the information of the passive phone 4 in originating end down-hole, aboveground personnel select to connect on display by the operation of the passive phone 4 in originating end down-hole, the operation electrical signal transfer is given the programme-controlled exchange module, the signal of telecommunication that spreads out of from the programme-controlled exchange module be transferred to by the corresponding light signal modulation module 31 of the passive phone in originating end down-hole 4, this light signal modulation module 31 converts the electrical signal to light signal, through be exaggerated by corresponding optic fiber amplifying module 32 light signals of the passive phone in originating end down-hole 4, optical signal transmission after being exaggerated to by the first corresponding splitter 5 of the passive phone in originating end down-hole 4, the light signal that transfers out from this first splitter 5 passes through optical fiber successively, with be transferred to by the second corresponding splitter 6 of the passive phone in originating end down-hole 4 with by the corresponding voltage ring module 42 of the passive phone in originating end down-hole 4, these voltage ring module 42 jingle bells, the personnel in the pit facing to by corresponding optical fiber microphone 43 speeches of the passive phone in originating end down-hole 4, the sound light signal through with by the second corresponding splitter 6 of the passive phone in originating end down-hole 4, optical fiber, with be transferred to by the first corresponding splitter 5 of the passive phone in originating end down-hole 4 with by the first corresponding light signal demodulation module 33 of the passive phone in originating end down-hole 4, this first light signal demodulation module 33 converts light signal to the signal of telecommunication, the signal of telecommunication is transferred to the programme-controlled exchange module through digital control system host computer 2, the signal of telecommunication that spreads out of from the programme-controlled exchange module is converted into light signal through the light signal modulation module 31 corresponding with the passive phone in originating end down-hole 4, after light signal amplifies through the optic fiber amplifying module 32 corresponding with the passive phone in originating end down-hole 4, pass through first splitter 5 corresponding successively with the passive phone in originating end down-hole 4, optical fiber, second splitter 6 corresponding with the passive phone in originating end down-hole 4 is transferred to the second light signal demodulation module 44 corresponding with the passive phone in originating end down-hole 4, this second light signal demodulation module 44 converts light signal to the signal of telecommunication, the signal of telecommunication is transferred to the earphone module 41 corresponding with the passive phone in originating end down-hole 4, and the personnel in the pit can hear the sound that the passive phone 4 in originating end down-hole sends by the earphone module 41 corresponding with the passive phone in originating end down-hole 4.
Wherein, the sound process of light signal of the passive phone 4 in down-hole can be joined foregoing description, repeats no more herein.
On the basis of the foregoing description, further, control switch 3 can also comprise a recording module, and an end of recording module is connected with the first light signal demodulation module 33, the other end of recording module is connected with digital control system host computer 2, is used to write down the actual sound situation of down-hole.
On the basis of the foregoing description, further, the second light signal demodulation module 44 can also comprise the voltage decision circuitry, be used to detect the voltage of the passive phone 4 in down-hole, and judge the relation of detected voltage and pre-set threshold, if detected voltage less than pre-set threshold, then can be reported to the police, remind the staff to change battery.
On the basis of the foregoing description, further, the passive phone 4 in down-hole is provided with the ring indicating device, is connected with voltage ring module 42, is used to show the ring picture.
By top description, the mining downhole optic fiber emergency communication system that the utility model provides can be applied in the following field:
1, in emergency circumstances aboveground, personnel in the pit's communication, emergency comprises: the unexpected power failure, mine is permeable, and gas is given prominence to, explodes, is exceeded standard, and subsides;
2, the communication between the wrecked storehouse: between refuge warehouse and the chamber, between aboveground and refuge warehouse, the chamber, refuge warehouse on the escape route, chamber, the contact between aboveground;
3, the collection of the voice signal in passive phone 4 environs in down-hole;
4, to 24 hours recording of various types of signal, in order to inquiry afterwards, as the technical support of accident cause discussion;
5, communication just often and voice broadcast service.
The effect of the mining downhole optic fiber emergency communication system that the utility model provides is as follows: multichannel communication simultaneously, aboveground many people communication, single-core fiber can transmit multiplex telephony, can grow Distance Transmission and do not add intermediate station, self diagnosis circuit on-off, each path synchronization, the passive phone in down-hole and do not need the microphone part of extra power supply, the passive phone in down-hole can detect recording in 24 hours simultaneously to the down-hole.
In the practice of construction process of the mining downhole optic fiber emergency communication system that construction the utility model provides, should note following problem:
1, all lay main fiber in the main shaft of mining down-hole, auxiliary shaft, the ventilation shaft, main fiber intersects with the optical fiber that is connected the passive phone in a plurality of down-holes, and first splitter that will be connected with main fiber in the exit of face is made optical fiber connecting box;
2, tell an optical Fiber Closure on the main fiber in main shaft, auxiliary shaft, ventilation shaft at a certain distance, be used for increase-volume;
3, the passive phone in down-hole is a wall tepephone, shell adopts enhancement mode polyester, alloy aluminum film production, and degree of protection reaches IP65, is installed in lower position, several in the many preparations in the position of necessity at ordinary times, can promptly cut out an optical fiber in some positions during urgent need and carry out communication.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (7)
1. a mining downhole optic fiber emergency communication system is characterized in that, comprising:
Aboveground subsystem and down-hole subsystem, described aboveground subsystem is connected by optical fiber with described down-hole subsystem;
Described aboveground subsystem comprises aboveground phone, digital control system host computer and the control switch of series connection successively, described digital control system host computer is used to control the selection of the conversation of connecting the passive phone in down-hole, and described control switch is used for the opto-electronic conversion of voice signal between the passive phone of described aboveground phone and described down-hole;
Described down-hole subsystem comprises the passive phone in described down-hole;
Wherein, described control switch comprises light signal modulation module, optic fiber amplifying module, the first light signal demodulation module, LASER Light Source, described light signal modulation module is connected with described optic fiber amplifying module, described optic fiber amplifying module is connected with first splitter, described light signal modulation module is connected with described digital control system host computer, one end of the described first light signal demodulation module is connected with described digital control system host computer, the other end of the described first light signal demodulation module is connected with described first splitter, and described LASER Light Source is connected with described first splitter;
The passive phone in described down-hole comprises the second light signal demodulation module, earphone module, voltage ring module, optical fiber microphone, wherein, described optical fiber microphone is connected with second splitter respectively with the described second light signal demodulation module, and described earphone module is connected with the described second light signal demodulation module respectively with described voltage ring module.
2. mining downhole optic fiber emergency communication system according to claim 1 is characterized in that,
Described light signal modulation module comprises audio driven module, frequency modulation module, the light source driver module of series connection successively;
The described first light signal demodulation module comprises the first photodetection module, first filter circuit, first amplifying circuit of series connection successively;
The described second light signal demodulation module comprises the second photodetection module, second filter circuit, second amplifying circuit of series connection successively.
3. mining downhole optic fiber emergency communication system according to claim 2 is characterized in that,
Described down-hole subsystem comprises the passive phone in a plurality of described down-holes;
Described control switch comprises a plurality of described first light signal demodulation modules, a plurality of described light signal modulation module, a plurality of described optic fiber amplifying module, a plurality of described LASER Light Source, and the number of the described first light signal demodulation module that the number of the passive phone in described down-hole that wherein said down-hole subsystem comprises and described control switch comprise, described light signal modulation module, described optic fiber amplifying module, described LASER Light Source is the same;
Described control switch also comprises a programme-controlled exchange module, one end of described programme-controlled exchange module is connected with all described light signal modulation module, the other end of described programme-controlled exchange module is connected with described digital control system host computer, and the conversation that is used for the passive phone in described down-hole is selected.
4. mining downhole optic fiber emergency communication system according to claim 3, it is characterized in that, described control switch also comprises a recording module, be used to write down the actual sound situation of down-hole, one end of described recording module is connected with the described first light signal demodulation module, and the other end of described recording module is connected with described digital control system host computer.
5. mining downhole optic fiber emergency communication system according to claim 4 is characterized in that,
The described second light signal demodulation module also comprises the voltage decision circuitry, is used to detect the voltage of the passive phone in described down-hole, and judges the relation of detected voltage and pre-set threshold.
6. mining downhole optic fiber emergency communication system according to claim 5 is characterized in that the passive phone in described down-hole is provided with the ring indicating device, is connected with described voltage ring module, is used to show the ring picture.
7. mining downhole optic fiber emergency communication system according to claim 1 is characterized in that the optical fiber hydraulic quick coupler is all installed at described optical fiber two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201427063U CN202034985U (en) | 2011-05-06 | 2011-05-06 | Underground optical fiber emergency communication system for mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201427063U CN202034985U (en) | 2011-05-06 | 2011-05-06 | Underground optical fiber emergency communication system for mine |
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| CN202034985U true CN202034985U (en) | 2011-11-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
| CN109245826A (en) * | 2018-08-08 | 2019-01-18 | 太原理工大学 | A kind of coal mine down-hole personnel optical fiber emergency communication device |
-
2011
- 2011-05-06 CN CN2011201427063U patent/CN202034985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107730871A (en) * | 2017-10-23 | 2018-02-23 | 长江大学 | A kind of downhole data communication system of well logging apparatus |
| CN109245826A (en) * | 2018-08-08 | 2019-01-18 | 太原理工大学 | A kind of coal mine down-hole personnel optical fiber emergency communication device |
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