CN107340520A - A kind of underground mine disaster sign of life detection and alignment system - Google Patents
A kind of underground mine disaster sign of life detection and alignment system Download PDFInfo
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- CN107340520A CN107340520A CN201710500939.8A CN201710500939A CN107340520A CN 107340520 A CN107340520 A CN 107340520A CN 201710500939 A CN201710500939 A CN 201710500939A CN 107340520 A CN107340520 A CN 107340520A
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- optical fiber
- transmission fibers
- detection probe
- signal
- acoustic detection
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
Abstract
The invention discloses a kind of detection of underground mine disaster sign of life and alignment system, including Transmission Fibers, positioned at generating laser L face to face, optical splitter P, circulator C, phase detectors D, data collecting card Q, signal transacting main frame N, and the optical fiber acoustic detection probe A positioned at mine passage, when mine disaster occurs, by the sign of life for calling for help voice signal acquisition trapped personnel caused by the activity such as sound and walking for gathering and monitoring the personnel for being confined in underground.Meanwhile optical fiber sound wave sensing probe A equidistantly distributes according to certain, it can realize and the position for being stranded personnel in the pit is positioned by information such as the different optical fiber sound wave sensing probe A intensities of sound collected.The positional information of trapped personnel is provided for rescue personnel.The present invention use transmission line of the optical fiber as signal, due to light weight, it is corrosion-resistant the advantages that, be hardly damaged when mine disaster occurs, it is ensured that the validity in signals transmission.
Description
Technical field
The present invention relates to Fibre Optical Sensor and signal processing technology field, is related to Fibre Optical Sensor, acoustics sensor and signal transacting
Technology.
Background technology
China is the big country of a producing coal coal, and coal occupies sizable proportion in the whole energy resource consumption in China,
Following significant period of time, China still will be used as the main consumption energy using coal.With the rapid hair of national economy
Exhibition, the demand of coal is also growing day by day, and the proportion that coal production accounts for world's coal total output is still very big.But one can not
The fact that ignore is that the accident of mine disaster rate in China for a long time can be in any more than World Developed Countries level.This is to being engaged in well
The life security of the personnel of lower exploitation work causes great risk.Because country is in the attention of coal mining secure context so that
The situation of China's coal-mine safety in production has taken a turn for the better, but accident still inevitably occurs.According to incompletely statistics, it is domestic every
Nian Douhui has more than 100 big and small coal mining accident.Coal mining big province of the Shanxi Province as China, its accident
Probability of happening ranks first in the country, annual because the number of coal mining accident and death is also hundreds and thousands of.In face of coal mining
The high mortality that accident is brought occurs for operation, only winning apparatus mechanization degree is not low, colliery location geographic situation is complicated and
The natural causes such as earthquake, rescue level is not high after accident and causes the very big reason of coal mining accident high mortality.Mine is once
Generation accident of mine disaster, rescue personnel can be extremely difficult to the situation of underground work personnel and the confirmation of vital signs situation.
Special due to subsurface environment, wireless signal can hardly transmit under mine, and wireless location calling device can not then use.One
Mine disaster occurs for denier, and being confined in the communication of the staff of underground will interrupt with rescue personnel, and this causes the rescue work in mine disaster
Add great difficulty.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, it is proposed that a kind of underground mine disaster sign of life inspection
Survey and alignment system.By the way that multiple optical fiber sound wave sensing probes of the present invention are distributed in into mine according to a certain distance
In, it is possible to achieve collection is caught to the high sensitivity of the voice signal under mine and monitored.When mine disaster is when occurring, Ke Yitong
Voice signal caused by crossing the activity such as the calling for help sound for gathering and monitoring the personnel for being confined in underground and walking obtains oppressive
The sign of life of member.Meanwhile optical fiber sound wave sensing probe equidistantly distributes according to certain, can be passed by different optical fiber sound waves
The information such as the intensity of sound that sense probe collects, realize and the position for being stranded personnel in the pit are positioned.There is provided for rescue personnel
The positional information of trapped personnel.The present invention use transmission line of the optical fiber as signal, due to light weight, it is corrosion-resistant the advantages that,
Mine disaster is hardly damaged when occurring, it is ensured that the validity in signals transmission.
The underground mine disaster sign of life detection of the present invention includes Transmission Fibers, the Laser emission positioned at ground with alignment system
Device L, optical splitter P, circulator C, phase detectors D, data collecting card Q, signal transacting main frame N, positioned at the optical fiber of mine passage
Acoustic detection probe A.Centre wavelength preferred 1550nm, generating laser the L output that wherein generating laser L launches laser connects
Continuous light, injects in Transmission Fibers B0.Detected while to realize multiple signals, into the continuous light in Transmission Fibers B0 via point
Light device P is divided into n (n corresponds to optical fiber acoustic detection probe A set in mine passage number) continuous light in road, and what is be divided into is each
The continuous light in road all continues onwards transmission via the corresponding B1 of Transmission Fibers all the way.
Per a port (usual circulator C includes 3 ports) of circulator C corresponding to Transmission Fibers B1 connections all the way,
Circulator C in the present invention is used to launch light, the coupled transfer of reflected light, will for the ease of distinguishing circulator C 3 ports
The port definition being connected with Transmission Fibers B1 is 1 port, is 2 ports by the port definition being connected with Transmission Fibers B2, will be with biography
The port definition for losing fine B3 connections is 3 ports.Continuous laser in Transmission Fibers B1 couples warp by circulator C 1 port
By 2 port transmissions into Transmission Fibers B2.Transmission Fibers B2 connection optical fiber acoustic detection probes A.
Wherein optical fiber acoustic detection probe A is with highly sensitive vibration acoustic detection probe, and it includes one section of transmission
Optical fiber B4, glass bushing E and graphene film G, Transmission Fibers B4 one end are fixed in glass bushing E, and one end is used for welding
Transmission Fibers B2, graphene film G are fixed on a glass bushing E end face, and with the transmission light in glass bushing E
Fine B4 end face forms a FP chamber (Fa-Po cavity).So that the continuous light in Transmission Fibers B2 can be by optical fiber sonic detection
Graphene film G reflections in probe A, obtain reflected light.
From 2 port transmissions of the optical signal (reflected light) through circulator C that optical fiber acoustic detection probe A is reflected to 3 ends
Mouthful, then it is coupled into Transmission Fibers B3.A phase detectors D is all connected with per Transmission Fibers B3 all the way, in phase detectors D
Complete the detection to the phase place change of reflected light.
Phase detectors D signal output part is connected with data collecting card Q signal input part, data collecting card Q letter
Number output end connection signal transacting main frame N.Wherein data collecting card Q frequency acquisition can freely be set, for the ease of system
It is integrated, on the premise of acquisition channel meets (i.e. acquisition channel number m >=n of data collecting card Q), all phases can be examined
The output signal for surveying device D inputs same data collecting card Q different acquisition passage, completes to bit detector D output signal
Data gathers.If data collecting card Q acquisition channel number m is less than n, need multiple data collecting card Q jointly complete
The collection of paired n roads signal.Meanwhile in the system, data collecting card Q both can be single device, can also be integrated
In signal transacting main frame N, i.e., data collecting card Q signal input part is connected with phase detectors D signal output part, data
Capture card Q signal output part connection signal transacting main frame N processing units, are given birth to by the processing unit based on gathered data
Order the processing of sign detection and positioning.
Set locations of each optical fiber acoustic detection probe A in mine passage is previously stored with data processing host N, when
When phase detectors D detects the phase place change frequency of the reflected light from any optical fiber acoustic detection probe A, then show the light
Acoustic signals S be present in fine acoustic detection probe A detection range, can then be obtained sending sound wave letter by the set location of the probe
Number S positional information, and then complete to sign of life detection and positioning in mine passage.
Further, signal transacting main frame N is also based on phase place change frequency that phase detectors D is detected to sound wave
Signal S carries out voice signal synthesis, and plays in real time, and then determines the vital signs situation of the trapped personnel in mine passage.
I.e. described signal transacting main frame N also includes phonetic synthesis processing unit and voice playing unit, the phonetic synthesis processing unit
Based on the gathered data of data collecting card Q inputs, synthetic speech signal is simultaneously played out by voice playing unit.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：In the present invention, whole system
Altogether with a lasing light emitter, system cost is saved.Multiple light paths will be divided into by laser by optical splitter all the way, and in each light path
There is a highly sensitive vibration acoustic signal detection probe, the underground passage of whole mine can be covered, and realize comprehensive
The position of underground operators without dead angle and the detection of vital signs.Meanwhile the special construction made of graphene film
Optical fiber acoustic detection probe, it can be caught for very small vibration signal, greatly improve the spirit of whole system
Sensitivity.The phase detectors D electric signals exported are acquired by data acquisition device, by the data collected through same
Signal transacting main frame is handled, and has saved cost to a certain extent.It is a kind of in the complicated Minepit environment of mine disaster occurs
The method of extremely reliable vital signs detection and positioning.
Brief description of the drawings
Fig. 1 is the system structure diagram of the present invention；
Fig. 2 is sensor fibre beam structural representation；
The structural representation of Fig. 3 optical fiber acoustic detection probes；
Fig. 4 is the scheme of installation of the system；
Fig. 5 is the operation principle schematic diagram of the system；
Fig. 6 is that high sensitivity optical fiber acoustic detection probe grows the schematic diagram that changes in voice signal effect cavity of resorption；
When Fig. 7 is that Data Detection passage is opened, underground is not detected by voice signal without staff's operation；
When Fig. 8 is that Data Detection passage is opened, underground has staff to produce voice signal, and voice signal is detected.
Reference：A- high sensitivity optical fiber acoustic detection probes；E- probe glass bushings；Graphene on G- probes is thin
Film；The cavity length of I-FP chambers (Fa-Po cavity)；B- Transmission Fibers beams；B0, B1, B2, B3, B4- Transmission Fibers；C- circulators；1、
2nd, 1,2,3 ports of 3- circulators；D- phase detectors；L- generating lasers；P- optical splitters；Q- multi-channel data acquisition boards；
N- signal transacting main frames；Fl transmission light in a1, a2, a3- Transmission Fibers；R1- reflected lights；Biography in r2- Transmission Fibers B3
Lose；J --- fusion point；S- trapped personnel voice signals.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, with reference to embodiment and accompanying drawing, to this hair
It is bright to be described in further detail.
Referring to Fig. 1, mine disaster sign of life in underground of the invention detection includes 1 generating laser L, light splitting with alignment system
Device P, data collecting card Q, signal transacting main frame N, n circulator C, optical fiber acoustic detection probe A, phase detectors D, Yi Jichuan
Fibre is lost, its annexation is：Generating laser L signal output part is inputted by Transmission Fibers B0 and optical splitter P signal
End connection；Optical splitter P includes n roads signal output part, and it passes through Transmission Fibers B1 all the way and one respectively per road signal output part
Circulator C port 1 is connected, and the port 2 of the circulator C is visited by one optical fiber sonic detection of Transmission Fibers B2 connections all the way
Head A, while the port 3 of the circulator C is connected by Transmission Fibers B3 all the way and a phase detectors D signal input part
Connect, phase detectors D signal output part is connected with data collecting card Q signal input part, data collecting card Q signal output
End connection signal transacting main frame N.
In this embodiment, the relevant narrow linewidth of height that laser generator L preferred emissions centre wavelength is 1550nm
Laser.Optical splitter P uses 1:64 types, caused laser is divided into 64 road laser, circulator C, optical fiber acoustic detection probe A,
Phase detectors D quantity is 64.Multiplexing optical fiber B2 uses transmitting beam B form, and referring to Fig. 2, the tunnels of Ji Jiang 64 pass
Lose fine B2 and twist together composition Transmission Fibers beam B.
64 highly sensitive optical fiber acoustic detection probe A are made first, and its structure is as shown in figure 3, including one section of transmission
Optical fiber B4, glass bushing E and graphene film G, Transmission Fibers B4 one end are fixed in glass bushing E, the other end be used for
Transmission Fibers B2 weldings (the point J shown in Fig. 1 is then corresponding fusion point), graphene film G is fixed on the one of glass bushing E
On individual end face, and a FP chamber (Fa-Po cavity) is formed with the end face of the Transmission Fibers B3 in glass bushing E.Wherein optical fiber
Acoustic detection probe A specific preparation process is as follows：
(1) graphene oxide solution for being 0.5mg/ml with graphene oxide powder and deionized water configuration concentration, will match somebody with somebody
The solution made is placed in ultrasonic cleaner about 10 minutes, removes the oxonium ion in solution；
(2) taking about 0.25ml graphene oxide solution, to be placed in size be 1cm2Copper foil on, obtain dripping aerobic fossil
The copper foil 1 of black alkene solution.Copper foil 1 is placed on warm table and carries out drying and processing.Warm table drying temperature is 40~50
DEG C, drying time is about 3-4 hour.Until graphene oxide solution is oven-dried, the copper with drying graphene oxide is obtained
Paillon foil 2；
(4) the small square sheets that copper foil 2 is cut into 5mm*5mm are placed in the FeCl that concentration is 0.2g/ml3It is right in solution
Copper sheet is corroded, and copper foil will be corroded disappearance after 2 hours, and graphene oxide film will swim in solution surface；
(5) fritter graphene oxide film is gently picked up with sheet glass to be placed in deionized water and cleaned 2 times, obtaining can be with
For making optical fiber acoustic detection probe A clean graphene oxide film, i.e. graphene film G.
(6) glass bushing E (can use glass capillary) is put into ultrasonic cleaner and cleaned.Cleaning is completed
Afterwards, it is placed in temperature to the glass bushing E heating, dryings after cleaning to be adjusted to dry 3-5min on 100 DEG C of warm table, obtains drying
Glass bushing E；
(7) obtained graphene film G films are covered in glass bushing E one end；
(8) again stretching into the one section of Transmission Fibers for peelling off coat B4 (naked fibre) (can in the glass bushing E after heating, drying
To connect the interference fringe picture of spectrometer by observing to determine that Transmission Fibers B4 stretches into glass bushing E depth), finally carry out
Encapsulation process obtains optical fiber acoustic detection probe A.
After 64 optical fiber acoustic detection probe A are made, it is arranged in the operation path of mine at equal intervals.For
Obtained optical fiber acoustic detection probe A in the present embodiment, through actual test, its effective detection range is 15m, therefore in mine
Operation path in an optical fiber acoustic detection probe A is then set at interval of 20m, in theory can to underground 1280m away from
From the detection and positioning for carrying out sign of life.Optical fiber acoustic detection probe A quantity, correspondingly can also be increased in actual applications
Light path number and data acquisition channel number, to be extended to the underground investigative range that can be detected.Effective detection distance W with
Optical fiber acoustic detection probe A quantity n, path channels number m, circulator number k, and the port number d of data collecting card pass
It is to be：M=n, k=n, d=n, W=20 × n.
If setting an optical fiber acoustic detection probe A every 20m, Transmission Fibers beam B length should be greater than 1280m, this
In embodiment, Transmission Fibers beam B length takes 1500m.And in Transmission Fibers beam B detection section, one is extracted out every 20m
Transmission Fibers B4 weldings on root Transmission Fibers B2, with optical fiber sound wave sensing probe A, fusion point J as shown in Figure 1, so as to structure
Into complete Transmission Fibers.So on whole Transmission Fibers beam B a high sensitivity optical fiber sound wave inspection is just dispersed with every 20m
Probing head.Then sensor fibre beam B is fixed along the conduit wall under mine, it is ensured that the mine passage region to be detected all is passed
Defeated fibre bundle B coverings.After arranging Transmission Fibers beam B, the optical fiber acoustic detection probe A being placed on B then can be in mine
Acoustic signals are detected caused by personnel activity, except optical fiber acoustic detection probe A and Transmission Fibers beam B are distributed in mine passage
In, remaining equipment of system (generating laser L, optical splitter P, circulator C, phase detectors D, data collecting card Q, at signal
Reason main frame N) then it is placed in the Control Room in ground handling area, obtain scheme of installation as shown in Figure 4.
Referring to Fig. 5, in present embodiment, the workflow of system is：
(1) the continuous laser a1 (fl transmission light) of generating laser L transmittings, enters optical splitter P via Transmission Fibers B0,
The continuous laser a1 in Transmission Fibers is divided into 64 road continuous laser a2 (fl transmission light) through optical splitter P.Per road continuous laser
A2 enters circulator C, and the coupling of 2 ports through circulator C by Transmission Fibers B1 all the way by circulator C 1 port respectively
Optical signal a3 (fl transmission light) is obtained, a3 enters optical fiber acoustic detection probe A through Transmission Fibers B2.
(2) the optical signal a3 transmitted in optical fiber acoustic detection probe A first passes around Transmission Fibers B4 end face and enters B4
In the FP chambers that end face is formed with graphene film G, graphene film G can be reflected optical signal a3, obtain reflected light r1, then
Reflected light r1 is reflected back into Transmission Fibers B2 through FP chambers.
Reflected light r1 is coupled into circulator C by circulator C 2 ports, and 3 ports through circulator C couple to obtain
Reflected light r2 (i.e. transmission light in Transmission Fibers B3), r2 enter phase detectors D through Transmission Fibers B3.Via corresponding phase
Detector D carries out phase-detection to the reflected light r2 in B3.
When acoustic signals S in optical fiber acoustic detection probe A investigative range be present (when mine disaster occurs, S show as by
The voice signal of oppressive member), the graphene film G on optical fiber acoustic detection probe A can be caused to produce vibration, and then cause FP chambers
The long I of chamber change, as shown in Figure 6.The long I of chamber length change frequency is identical with acoustic signals S frequency.The long I of chamber change
Reflective phase can be caused to produce change, the change of reflective phase can be detected through phase detectors D.Work as phase-detection
There is testing result in device D, then it represents that acoustic signals S be present in optical fiber acoustic detection probe A investigative range；If tied without detection
Fruit, then it represents that in the absence of acoustic signals S.
Based on above-mentioned principle, then after mine disaster occurs, phase place change can be detected the presence of based on phase detectors D,
To determine that mine passage whether there is sign of life, and based on corresponding optical fiber acoustic detection probe A set location, and obtain by
The positional information of oppressive member's (trapped personnel for sending acoustic signals), realize to exist the detection of the trapped personnel of sign of life and
Localization process.
(3) the corresponding phase detectors D of multi-channel data acquisition board Q each passage, to multiple phase detectors
Carry out data acquisition simultaneously.The voice data collected, which is input in signal transacting main frame N, carries out signal processing analysis and display.
Fig. 7 is real-time displays of the signal transacting main frame N to the voice data of input when being not detected by acoustic signals S；Fig. 8 is then to examine
When measuring acoustic signals S, real-time displays of the signal transacting main frame N to the voice data of input.
(4) in signal transacting main frame N, the voice data information that can be collected to each light path records, to inspection
The frequency and intensity of the vibration signal measured are analyzed, while can also be played the sound collected in real time, and then
Determine the vital signs situation of trapped personnel.Simultaneously as different optical fiber acoustic detection probes are according to being equidistantly placed, according to
The strength information of the detected sound of difference probe, can be positioned to trapped personnel.Once generation mine disaster, then can be with
One time determined the Survival and positional information of trapped personnel, and help is provided for rescue work.
In summary, by analyzing and processing the personnel in the pit's voice signal detected, the present invention can be to underground work people
Member's vital signs quick detection is simultaneously accurately positioned to personnel.The high sensitivity optical fiber acoustic detection probe of use can ensure
Whole system has very high sensitivity.Meanwhile whole mine passage can be completely covered in the distributed frame of multiple spot detection, no
Test leakage situation can occur.Simultaneity factor is simple to operate, and optical fiber has considerably long service life in itself, it is ensured that whole system
Reliability.Down-hole trapped personnel is detected and positioned by the system, trapped personnel can be provided for rescue personnel
Positional information, the time is saved for rescue work.
Claims (6)
1. a kind of underground mine disaster sign of life detection and alignment system, it is characterised in that including Transmission Fibers, positioned at swashing for ground
Optical transmitting set L, optical splitter P, circulator C, phase detectors D, data collecting card Q, signal transacting main frame N, and it is arranged on ore deposit
Optical fiber acoustic detection probe A in well passage；
Wherein, generating laser L signal output part is connected by Transmission Fibers B0 with optical splitter P signal input part；
The optical splitter P includes n roads signal output part, and wherein n corresponds to optical fiber acoustic detection probe A number；
Optical splitter P every road signal output part is connected by Transmission Fibers B1 all the way with circulator C port 1 respectively, institute
Circulator C port 2 is stated by one optical fiber acoustic detection probe A of Transmission Fibers B2 connections all the way, while the circulator C
Port 3 is connected by Transmission Fibers B3 all the way with phase detectors D signal input part, the letter of the phase detectors D
Number output end is connected with data collecting card Q signal input part, data collecting card Q signal output part connection signal transacting main frame
N；
Optical fiber acoustic detection probe A includes one section of Transmission Fibers B4, glass bushing E and graphene film G, and the one of Transmission Fibers B4
End is fixed in glass bushing E, and one end is connected by the way of welding with Transmission Fibers B2, and graphene film G is fixed on glass
On a sleeve pipe E end face, and formed with the end face of the Transmission Fibers B4 in glass bushing E in Fa-Po cavity；
Phases of each phase detectors D for the detection fiber acoustic detection probe A graphene film G reflected lights reflected
Position change frequency；Data collecting card Q carries out data acquisition to phase detectors D output signal, and gathered data is input to
Signal transacting main frame N carries out the processing of sign of life detection and positioning：If phase detectors D detects phase place change, then it represents that
Sign of life be present, and the deployed position of the optical fiber acoustic detection probe A based on the corresponding phase detector D locally preserved obtains
The positional information of the sign of life.
2. the system as claimed in claim 1, it is characterised in that it is single that the signal transacting main frame N also includes phonetic synthesis processing
Member and voice playing unit, the gathered data that the phonetic synthesis processing unit is inputted based on data collecting card Q, synthesis voice letter
Number and played out by voice playing unit.
3. the system as claimed in claim 1, it is characterised in that the data collecting card Q is built in signal transacting main frame N,
Data collecting card Q signal input part is connected with phase detectors D signal output part, data collecting card Q signal output part
Signal transacting main frame N processing units are connected, sign of life detection and positioning are carried out based on gathered data by the processing unit
Processing.
4. the system as claimed in claim 1, it is characterised in that optical fiber acoustic detection probe A graphene film G making
Cheng Wei：
(1) graphene oxide solution for being 0.5mg/ml with graphene oxide powder and deionized water configuration concentration, to aoxidizing stone
Black alkene solution removes the oxonium ion in graphene oxide solution by the way of being cleaned by ultrasonic；
(2) graphene oxide solution after cleaning is taken to be placed on the copper foil of rectangle, obtaining drop has the copper of graphene oxide solution
The unit coverage density of paillon foil 1, wherein copper foil 1 is 0.25ml/cm2。
Copper foil 1 is placed on warm table again and carries out drying and processing, until graphene oxide solution is oven-dried, is obtained with drying
The copper foil 2 of dry oxidation graphene；Wherein warm table drying temperature is 40~50 DEG C, and drying time is 3-4 hour.
(3) copper foil 2 is cut into 5mm*5mm square sheets, is placed in the FeCl that concentration is 0.2g/ml3To carrying out in solution
Corrosion, obtains graphene oxide film.
(4) graphene oxide film is placed in deionized water and cleaned, the graphene for obtaining optical fiber acoustic detection probe A is thin
Film G.
5. system as claimed in claim 4, it is characterised in that the process for making optical fiber acoustic detection probe A is as follows：
(1) glass bushing E is put into ultrasonic cleaner and cleaned, and heating baking is carried out to the glass bushing E after cleaning
It is dry, obtain dry glass bushing E；Wherein heating-up temperature is 100 DEG C, heat time 3-5min；
(2) the graphene film G films obtained based on manufacturing process described in claim 3 are covered in glass bushing E one end；
(3) the one section of Transmission Fibers for peelling off coat B4 is stretched into dry glass bushing E again, is finally packaged and handles
To optical fiber acoustic detection probe A.
6. the system as claimed in claim 1, it is characterised in that the optical fiber acoustic detection probe A is arranged on mine at equal intervals
In passage, spacing distance is 20 meters.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020103265A1 (en) * | 2018-11-23 | 2020-05-28 | 中科传启（苏州）科技有限公司 | Method and apparatus for detecting living body |
| CN114320473A (en) * | 2021-12-31 | 2022-04-12 | 北京景通科信科技有限公司 | Underground emergency communication device based on optical fiber vibration sensing |
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