CN205679760U - A kind of acoustic emission apparatus of Multi-target position - Google Patents

A kind of acoustic emission apparatus of Multi-target position Download PDF

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Publication number
CN205679760U
CN205679760U CN201620494752.2U CN201620494752U CN205679760U CN 205679760 U CN205679760 U CN 205679760U CN 201620494752 U CN201620494752 U CN 201620494752U CN 205679760 U CN205679760 U CN 205679760U
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China
Prior art keywords
transducer
power amplifier
acoustic emission
target position
signal
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Withdrawn - After Issue
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CN201620494752.2U
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Chinese (zh)
Inventor
马建敏
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Fudan University
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Fudan University
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Priority to CN201620494752.2U priority Critical patent/CN205679760U/en
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Publication of CN205679760U publication Critical patent/CN205679760U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model belongs to ultrasonic positioning techniques field, specially a kind of acoustic emission apparatus that can be used for Multi-target position.This device is made up of shell, transducer, close power amplifier, signal processor and Switching Power Supply.Input 220V electric main, Switching Power Supply is powered to signal processor and close power amplifier and is made its work, signal processor output interval harmonic signal, after close power amplifier amplifies, again through transformer boost, supply transducer, then transducer vibrations is evoked, transducer interval simple harmonic quantity acoustic emission to the impact point needed for Multi-target position, speed that the equipment of each impact point propagates in atmosphere according to sound wave and time is made to determine the distance from acoustic emission point for the impact point, it is achieved a little to launch multiple target and position simultaneously.This device can be used in the tunnel boring works such as railway, highway the positioning of workmen between two linings and face it can also be used to occasion personnel shift position and the determinations of residence time such as square, exhibitions, parks.

Description

A kind of acoustic emission apparatus of Multi-target position
Technical field
The utility model belongs to ultrasonic positioning techniques field, is specifically related to a kind of acoustic emission that can be used for Multi-target position Device.
Background technology
The method typically utilizing acoustic emission to carry out finding range or position be mostly utilize high directivity ultrasonic wave launch and Reflection completes.For effect of accurately being found range, employ the ultrasonic wave of high directivity, owing to ultrasonic wave is at air Middle decay quickly, thus measurement distance can not be too remote.The distance of reverberation can only be measured by other this method, neither The species of reverberation can be screened, the quantity of reverberation can not be reflected.Especially for the tunnelling such as railway, highway Cheng Zhong, between two linings and face, multiple target (positioning of the multiple staff of diverse location) positioning, generally requires acoustic emission Distance reaches more than 200 meters, and the face that sound wave reaches is due to the work of air drill, excavator, loading machine, heavy type transport vehicle etc. Noise is very big, and existing range finding ultrasonic wave is due to remote decay and the masking action by strong background noise, it is impossible to reach fixed The purpose of position measurement.
Content of the invention
For weak point present in above-mentioned technology, the purpose of this utility model be to provide a kind of transmitting range length, The good acoustic emission apparatus for Multi-target position of positioning measurement effect.
The acoustic emission apparatus 1 for Multi-target position that the utility model provides, by cabinet the 2nd, transducer the 3rd, containing transformation The close power amplifier of device the 4th, signal processor 5 and Switching Power Supply 6 form, and the 5th, transducer the 3rd, close power amplifier the 4th, signal processor switchs electricity Source 6 is assemblied in cabinet 2 together, shown in Figure 1.
Accessing 220V electric main, Switching Power Supply 6 powers to signal processor 5 and close power amplifier 4 so that it is work, signal Processor 5 output interval harmonic signal, after close power amplifier 4 amplifies, then through transformer boost, supplies transducer 3, evokes and change Can device 3 vibrate, 3 interval simple harmonic quantity acoustic emissions of transducer, to the impact point needed for Multi-target position, make the equipment of each impact point The speed propagated in atmosphere according to sound wave and time determine the distance from acoustic emission point for the impact point, reach a little to launch many The purpose that target positions simultaneously.
In the utility model, cabinet 2 can be cuboid, the square bodily form, hexahedron or tubular thin walled shell, Material can be selected for metal.The use safety of transmitting and transducer 3 in order to ensure sound wave, the front end of transducer 3 is provided with safety Wire netting, additionally, block without any other.The 220V exchange input socket and the signal that are additionally provided with water-proof function above cabinet 2 are defeated Enter accessory power outlet, and there are four connecting accessories of integral installation.Cabinet 2 also to have certain sealing property, prevents dust Entrance with water smoke.
In the utility model, transducer 3 is by attachment bolt the 7th, rear end cap the 8th, piezoelectric ceramic piece and voltage input end the 9th, cumulative Device the 10th, impedance matching layer the 11st, impedance matching enhancement Layer 12 is sequentially connected with composition, rear end cap the 8th, piezoelectric ceramic piece 9 and amplitude transformer 10 It is linked together by bolt 7, see shown in accompanying drawing 2.Wherein, piezoelectric ceramic piece is loop configuration, thickness and inner and outer diameter root Determining according to the frequency of sound wave launched, quantity determines according to the intensity launching sound wave, typically by the pottery of 3 to 10 pieces of loop configuration Piece is composed in series.The transducer being made up of above-mentioned parts, according to the needs of Multi-target position, can launch 7KHz to 20KHz frequency The interval simple harmonic quantity sound wave of a certain single-frequency in rate.For launching the interval simple harmonic quantity sound wave determining frequency, if intensity can not meet The needs of multipoint positioning, can penetrate with do as one likes in identical 3 groups of paroxysms of transducer.
In the utility model, D-type power amplifier 13 and transformer 14 that close power amplifier 4 is exported by bridge joint are sequentially connected with group Become, see shown in accompanying drawing 3.Power at positive and negative 80V and positive and negative 15V power supply, inputted peak-to-peak value 8V interval simple harmonic quantity by power amplifier input In the case of signal, this power amplifier has power supply, signal, protection, slicing instruction, the output of radiator fan power supply, temperature guarantor Protect, middle point protection, under-voltage protection, the function of overcurrent protection, its output can export 1500 watts of power, Voltage Peak peak value 180V, Enter transformer 14.This power amplifier 13 and output transformer 14 coordinate 200V to the 1500V's required for output transducer 3 High voltage.
In the utility model, signal processor 5 is by microprocessor the 15th, wave filter the 16th, eight bit switches the 17th, outer triggering signal Input 18 connects composition through circuit, and has power input and signal output part, sees shown in accompanying drawing 4.Power at positive and negative 15V In the case of, the interval harmonic signal of peak-to-peak value 8V can be provided for close power amplifier 4, realize external trigger by adjusting eight bit switches With the switching of internal trigger, and adjust the make-and-break time of output signal, it is ensured that signal be interrupted during zero-signal output.
In the utility model, Switching Power Supply 6(accompanying drawing 5) predominantly signal processor 5 provides positive and negative 15V power supply, is switch Power amplifier 4 provides positive and negative 80V and positive and negative 15V power supply, it is ensured that signal processor 5 and close power amplifier 4 normally work.
This device is by the design of transducer the 3rd, close power amplifier the 4th, signal processor the 5th, Switching Power Supply 6 and combination so that it is The a certain unifrequent audible interval simple harmonic quantity sound wave between 7KHz to 20KHz can be launched, and coordinate peak power and signal duty Coordinate between Bi.Not only breach the near shortcoming of conventional ultrasonic wave transmitting range, and solve high-power transducer due to length The heating problem that phase works continuously and causes.Therefore the sound wave that this invention device is launched, under strong background noise environment, can realize Using plurality of mobile phones as accepting device, effective reception of any distance within 300 meters, and combine WIFI and computer complete right It multiobject is accurately positioned, and can guarantee that 24 continuous throughout the twenty-four hour24s.
The acoustic emission apparatus of Multi-target position of the present utility model, its sound wave launched can be using plurality of mobile phones as reception End, and combine WIFI and computer completes to be accurately positioned to multiobject.
Brief description
Fig. 1 is structural diagrams of the present utility model.
Fig. 2 is the structural diagrams of transducer in the utility model.
Fig. 3 is the structural diagrams of the utility model breaker in middle power amplifier.
Fig. 4 is the structural diagrams of signal processor in the utility model.
Fig. 5 is the structural diagrams of the utility model breaker in middle power supply.
Label in figure: 1 is the acoustic emission apparatus that can be used for Multi-target position, 2 is cabinet, and 3 is transducer, and 4 is switch Power amplifier (contains transformer), and 5 is signal processor, and 6 is Switching Power Supply, and 7 is transducer attachment bolt, and 8 is transducer rear end cap, and 9 For transducer piezoelectric ceramic piece and voltage input end, 10 is transducer amplitude transformer, and 11 is transducer impedance matching layer, and 12 is transducing Device impedance matching enhancement Layer, the D-type power amplifier that 13 is bridge joint output, 14 is transformer, micro-place that 15 is signal processor Reason device, the wave filter that 16 is signal processor, eight bit switches that 17 is signal processor, the external trigger that 18 is signal processor Signal input part.
Detailed description of the invention
Seeing Fig. 1, the utility model can be fixed by bolt or steel band, during for constructing tunnel, can be fixed on two linings On the crossbeam of chassis, transducer transmitting terminal points to construction face.Other application, required for ensureing that transducer transmitting terminal points to Under the premise of the multiple target of positioning, apparatus of the present invention can be fixed on fixing or the support of movement and can use.The present invention removes Can be used for, outside the positioning of workmen between two linings and face in the tunnel boring works such as railway, highway, can be also used for wide Occasion personnel shift position and the determinations of residence time such as field, exhibitions, park.
See Fig. 1, input 220V(100V to 240V to the acoustic emission apparatus 1 of Multi-target position and all can work) exchange Civil power, opens switch, and this device is started working.According to the needs of Multi-target position, by peripheral control unit, open and close are instructed to letter Number processor 5, signal processor 5 sends interval harmonic signal to be carried out to interval harmonic signal to close power amplifier 4, close power amplifier 4 After amplification, then through transformer boost, transducer 3 is promoted to work.Transducer 3 is sent interval simple harmonic quantity sound wave, intermittently simple harmonic quantity sound wave Travel to need the impact point of positioning by air dielectric.Be positioned impact point equipment (as mobile phone or other there is sound wave and connect Receive and the equipment of wireless transmission function) speed propagated in atmosphere according to propagation time and the sound wave of acoustic emission point to impact point Degree, calculates impact point to the distance of acoustic emission end, reaches the purpose positioning.Due to the acoustic emission apparatus of this patent be with The angular air of certain transmitting is launched sound wave, therefore reaches the target in region at sound wave, as long as the sensitivity of accepting device is full Foot requires, all can position it, so multiple target can be positioned by this emitter simultaneously.
If this device is for the Multi-target position between two linings and face in highway, railway tunnel construction, this dress Putting on the crossbeam being fixed on two lining chassis, the transmitting terminal of transducer 3 points to the center of face.Device by close power amplifier 6 Tool coupler input 220V alternating current, Switching Power Supply 6 is provided the direct current of positive and negative 15V to signal processor 5, gives close power amplifier 3 There is provided positive and negative 80V and the direct current of positive and negative 15V, signal processor and close power amplifier are started working.If orientation distance requires Far reaching 300 meters, being inputted trigger by the outer triggering signal input 18 of signal processor 5, signal processor 5 sends The intermittent sinusoidal signal of 8.5KHz, signal duration, 100ms, was spaced 1s, and this signal is input to D-type power amplifier 13 Power amplifier input, after being amplified by 13 power amplifier output to transformer 14, after transformer boost, transformer is exported peak The high voltage of value 280V, this voltage is input to transducer voltage input 9, promotes transducer 3 to work.Sent by transducer 3 8.5KHz, duration 100ms, the sound wave of interval 1s, the hand of all workmens between Acoustic Wave Propagation to two lining and face On machine, mobile phone is transferred to computer by WIFI signal, computer is calculated every workmen to acoustic emission point Between distance, reach instant dynamic multi-objective positioning purpose.

Claims (8)

1. the acoustic emission apparatus that can be used for Multi-target position, it is characterised in that by cabinet, transducer, with transformer Close power amplifier, signal processor and Switching Power Supply composition, transducer, close power amplifier, signal processor, Switching Power Supply are assembled together In cabinet;
Accessing 220V electric main, Switching Power Supply is powered to signal processor and close power amplifier so that it is work, signal processor is defeated Go out interval harmonic signal, after close power amplifier amplifies, then through transformer boost, supply transducer, evoke transducer vibrations;Change Can device interval simple harmonic quantity acoustic emission to the impact point needed for Multi-target position, make the equipment of each impact point according to sound wave at air The speed of middle propagation and time determine the distance from acoustic emission point for the impact point, reach a little to launch what multiple target positioned simultaneously Purpose.
2. the acoustic emission apparatus of Multi-target position according to claim 1, it is characterised in that described cabinet is cuboid Shape, the square bodily form, hexahedron or tubular thin walled shell, material selection metal;The front end of transducer is provided with safe gold Belong to net, additionally, block without any other;The 220V exchange input socket and the signal input that are additionally provided with water-proof function above cabinet are defeated Go out socket, and there are four connecting accessories of integral installation.
3. the acoustic emission apparatus of Multi-target position according to claim 1 and 2, it is characterised in that described transducer is by joining Connecting bolt, rear end cap, piezoelectric ceramic piece and voltage input end, amplitude transformer, impedance matching layer, impedance matching enhancement Layer are sequentially connected with Composition, rear end cap, piezoelectric ceramic piece and amplitude transformer pass through together with bolt-connection;Wherein, piezoelectric ceramic piece is loop configuration, thick Degree and inner and outer diameter determine according to the frequency of sound wave launched, and are composed in series by the potsherd of 3 to 10 pieces of loop configuration;This transducing Device, according to the needs of Multi-target position, the interval simple harmonic quantity sound wave of a certain single-frequency in transmitting 7KHz to 20KHz frequency.
4. the acoustic emission apparatus of Multi-target position according to claim 3, it is characterised in that described transducer for send out Penetrate the interval simple harmonic quantity sound wave determining frequency, if intensity can not meet the needs of multipoint positioning, the identical transducer group of do as one likes energy Paroxysm is penetrated.
5. the acoustic emission apparatus of Multi-target position according to claim 3, it is characterised in that described close power amplifier is by bridge Connect the D-type power amplifier of output and transformer be sequentially connected with composition, positive and negative 80V and positive and negative 15V power supply power, defeated by power amplifier Enter end input peak-to-peak value 8V interval harmonic signal in the case of, this power amplifier have power supply, signal, protection, slicing instruction, The output of radiator fan power supply, temperature protection, middle point protection, under-voltage protection, the function of overcurrent protection, its output can export 1500 Watt power, Voltage Peak peak value 180V, enter transformer;This power amplifier and output transformer coordinate required for output transducer The high voltage of 200V to 1500V.
6. the acoustic emission apparatus of Multi-target position according to claim 5, it is characterised in that described signal processor by Microprocessor, wave filter, eight bit switches, outer triggering signal input connect composition through circuit, and have power input and letter Number output;Under positive and negative 15V electric power thus supplied, provide the interval harmonic signal of peak-to-peak value 8V for close power amplifier, by adjusting eight Bit switch realizes the switching of external trigger and internal trigger, and adjusts the make-and-break time of output signal, it is ensured that during signal is interrupted Zero-signal exports.
7. the acoustic emission apparatus of the Multi-target position according to claim the 1st, the 2nd, 4 or 6, it is characterised in that described switch electricity Source provides positive and negative 15V power supply for signal processor, provides positive and negative 80V and positive and negative 15V power supply for close power amplifier, it is ensured that signal transacting Device and close power amplifier normally work.
8. the acoustic emission apparatus of the Multi-target position according to claim the 1st, the 2nd, 4 or 6, it is characterised in that the sound wave of transmitting Using plurality of mobile phones as receiving terminal, and WIFI can be combined and computer completes to be accurately positioned to multiobject.
CN201620494752.2U 2016-05-27 2016-05-27 A kind of acoustic emission apparatus of Multi-target position Withdrawn - After Issue CN205679760U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105891808A (en) * 2016-05-27 2016-08-24 复旦大学 Acoustic wave transmitting device for multi-target positioning
CN107869985A (en) * 2017-11-02 2018-04-03 西南交通大学 A kind of tunnel piercing drilling depth automated watch-keeping facility and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105891808A (en) * 2016-05-27 2016-08-24 复旦大学 Acoustic wave transmitting device for multi-target positioning
CN107869985A (en) * 2017-11-02 2018-04-03 西南交通大学 A kind of tunnel piercing drilling depth automated watch-keeping facility and method

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Granted publication date: 20161109

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