CN105891808A - Acoustic wave transmitting device for multi-target positioning - Google Patents
Acoustic wave transmitting device for multi-target positioning Download PDFInfo
- Publication number
- CN105891808A CN105891808A CN201610359967.8A CN201610359967A CN105891808A CN 105891808 A CN105891808 A CN 105891808A CN 201610359967 A CN201610359967 A CN 201610359967A CN 105891808 A CN105891808 A CN 105891808A
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- China
- Prior art keywords
- transducer
- power amplifier
- signal processor
- signal
- acoustic emission
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/534—Details of non-pulse systems
-
- 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
Abstract
The invention belongs to the ultrasonic wave positioning technical field and relates to an acoustic wave transmitting device for multi-target positioning. The device is composed of a shell, a transducer, a switching power amplifier, a signal processor and a switching power source; 220V alternating current is inputted into the device; the switching power source supplies power for the signal processor and the switching power amplifier so as to make the signal processor and the switching power amplifier operate; the signal processor outputs intermittent simple harmonic signals; the intermittent simple harmonic signals are amplified by the switching power amplifier; the amplified signals are subjected to voltage boosting of a transformer; the intermittent simple harmonic signals processed by the transformer are supplied for the transducer so as to excite the transducer to vibrate; the transducer transmits the intermittent simple harmonic signals to target points required by the multi-target positioning, so that devices at the target points can determine distances from the target points to an ultrasonic wave transmitting point according to the speed and time of the transmission of ultrasonic waves in the air; and therefore, one-point-transmitting and multi-target simultaneous receiving positioning can be realized. The acoustic wave transmitting device of the invention can be applied to the positioning of construction personnel between a secondary lining and a tunnel face in a tunnel excavation project of a railway, a highway and the like, and can be also applied to the determination of the movement positions and stay time of peoples in places such as squares, exhibitions and parks.
Description
Technical field
The invention belongs to ultrasonic positioning techniques field, be specifically related to a kind of acoustic emission apparatus that can be used for Multi-target position.
Background technology
The method typically utilizing acoustic emission to carry out finding range or positioning is to utilize the ultrasonic emitting of high directivity and reflected mostly.For effect of accurately being found range, employing the ultrasound wave of high directivity, owing to ultrasound wave is decayed quickly in atmosphere, thus measurement distance can not be the most remote.The distance of reverberation can only be measured by the most this method, can not screen the kind of reverberation, can not reflect the quantity of reverberation.During the tunnelling such as railway, highway, multiple target (location of the multiple staff of diverse location) location between two linings and face, generally require acoustic emission distance and reach more than 200 meters, and the face of sound wave arrival is the biggest due to the work noise of air drill, excavator, loader, heavy type transport vehicle etc., existing range finding ultrasound wave is due to decay and the masking action by strong background noise at a distance, it is impossible to reach the purpose that location is measured.
Summary of the invention
For weak point present in above-mentioned technology, it is an object of the invention to provide a kind of transmitting range length, the acoustic emission apparatus for Multi-target position that location measurement effect is good.
The acoustic emission apparatus 1 for Multi-target position that the present invention provides, it is made up of cabinet 2, transducer 3, close power amplifier 4, signal processor 5 and Switching Power Supply 6 containing transformator, transducer 3, close power amplifier 4, signal processor 5, Switching Power Supply 6 are assemblied in cabinet 2 together, shown in Figure 1.
Access 220V electric main, Switching Power Supply 6 powers to signal processor 5 and close power amplifier 4, make its work, signal processor 5 output interval harmonic signal, after close power amplifier 4 amplifies, again through transformer boost, supply transducer 3, evoke transducer 3 to vibrate, 3 interval simple harmonic quantity acoustic emissions of transducer are to the impact point needed for Multi-target position, make speed that the equipment of each impact point propagates in atmosphere according to sound wave and time determine the impact point distance from acoustic emission point, reach a little to launch the purpose that multiple target positions simultaneously.
In the present invention, cabinet 2 can be cuboid, the square bodily form, hexahedron or tubular thin walled shell, and 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 safe wire netting, additionally, block without any other.It is additionally provided with 220V exchange input socket and the signal input-output socket of water-proof function above cabinet 2, and there are four connecting accessories of integral installation.Cabinet 2 also to have certain sealing property, prevents the entrance of dust and water smoke.
In the present invention, transducer 3 is sequentially connected with is formed by attachment bolt 7, rear end cap 8, piezoelectric ceramic piece and voltage input end 9, amplitude transformer 10, impedance matching layer 11, impedance matching enhancement Layer 12, rear end cap 8, piezoelectric ceramic piece 9 and amplitude transformer 10 are linked together by bolt 7, see shown in accompanying drawing 2.Wherein, piezoelectric ceramic piece is that loop configuration, thickness and inner and outer diameter determine according to the frequency of sound wave launched, and quantity determines according to the intensity launching sound wave, is typically composed in series by the potsherd of 3 to 10 pieces of loop configuration.The transducer being made up of above-mentioned parts, according to the needs of Multi-target position, can launch the interval simple harmonic quantity sound wave of a certain single-frequency in 7KHz to 20KHz frequency.For launching the interval simple harmonic quantity sound wave determining frequency, if intensity can not meet the needs of multipoint positioning, can identical 3 groups of paroxysms of transducer can penetrate with do as one likes.
In the present invention, D-type power amplifier 13 and transformator 14 that close power amplifier 4 is exported by bridge joint are sequentially connected with and form, and see shown in accompanying drawing 3.Power at positive and negative 80V and positive and negative 15V power supply, by power amplifier input input peak-to-peak value 8V interval harmonic signal in the case of; this power amplifier has 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 outfan can export 1500 watts of power, Voltage Peak peak value 180V, enters transformator 14.This power amplifier 13 and output transformator 14 coordinate the high voltage of 200V to the 1500V required for output transducer 3.
In the present invention, signal processor 5 is formed through circuit connection by microprocessor 15, wave filter 16, eight bit switch 17, outer triggering signal input 18, and is had power input and signal output part, sees shown in accompanying drawing 4.Under positive and negative 15V electric power thus supplied, can be close power amplifier 4 interval harmonic signal that peak-to-peak value 8V is provided, realize the switching of external trigger and internal trigger by adjusting eight bit switches, and adjust the make-and-break time of output signal, it is ensured that signal be interrupted during zero-signal output.
In the present invention, Switching Power Supply 6(accompanying drawing 5) predominantly signal processor 5 provides positive and negative 15V power supply, provides positive and negative 80V and positive and negative 15V power supply for close power amplifier 4, it is ensured that signal processor 5 and close power amplifier 4 normally work.
Apparatus of the present invention are by transducer 3, close power amplifier 4, signal processor 5, the design of Switching Power Supply 6 and combination, the a certain unifrequent audible interval simple harmonic quantity sound wave between 7KHz to 20KHz can be launched, and coordinate coordination between peak power and signal dutyfactor.Not only breach the shortcoming that conventional ultrasonic wave transmitting range is near, and solve the heating problem that high-power transducer causes due to long continuous operation.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 completes to be accurately positioned multiobject, and can guarantee that 24 continuous throughout the twenty-four hour24s.
The acoustic emission apparatus of the Multi-target position of the present invention, its sound wave launched using plurality of mobile phones as receiving terminal, and can combine WIFI and computer completes to be accurately positioned multiobject.
Accompanying drawing explanation
Fig. 1 is the structural diagrams of the present invention.
Fig. 2 is the structural diagrams of transducer in the present invention.
Fig. 3 is the structural diagrams of breaker in middle power amplifier of the present invention.
Fig. 4 is the structural diagrams of signal processor in the present invention.
Fig. 5 is the structural diagrams of breaker in middle power supply of the present invention.
Label in figure: 1 is the acoustic emission apparatus that can be used for Multi-target position, 2 is cabinet, 3 is transducer, 4 is close power amplifier (containing transformator), 5 is signal processor, 6 is Switching Power Supply, 7 is transducer attachment bolt, 8 is transducer rear end cap, 9 is transducer piezoelectric ceramic piece and voltage input end, 10 is transducer amplitude transformer, 11 is transducer impedance matching layer, 12 mate enhancement Layer for transducer impedance, the D-type power amplifier that 13 is bridge joint output, 14 is transformator, 15 is the microprocessor of signal processor, 16 is the wave filter of signal processor, 17 is eight bit switches of signal processor, 18 is the outer triggering signal input of signal processor.
Detailed description of the invention
Seeing Fig. 1, the present invention 1 can fix with bolt or steel band, when constructing tunnel, can be fixed on the crossbeam of two lining chassis, and transducer transmitting terminal points to construction face.Other application, under ensureing the multiple target premise that transducer transmitting terminal points to required location, can be fixed on apparatus of the present invention on fixing or the support of movement and can use.The present invention is except can be used in the tunnel boring works such as railway, highway between two linings and face in addition to the location of workmen, it is also possible to for square, exhibitions, occasion personnel shift position and the determination of residence time such as park.
See Fig. 1, input 220V(100V to 240V to the acoustic emission apparatus 1 of Multi-target position and all can work) electric main, open switch, this device is started working.Needs according to Multi-target position, by peripheral control unit, open and close are instructed to signal processor 5, signal processor 5 send interval harmonic signal to close power amplifier 4, after interval harmonic signal is amplified by close power amplifier 4, again through transformer boost, transducer 3 is promoted to work.Being sent interval simple harmonic quantity sound wave by transducer 3, intermittently simple harmonic quantity sound wave travels to need the impact point of location by air dielectric.Be positioned impact point equipment (as mobile phone or other there is the equipment of acoustic receiver and wireless transmission function) speed propagated in atmosphere according to propagation time and the sound wave of acoustic emission point to impact point, calculate the impact point distance to acoustic emission end, reach the purpose of location.Owing to the acoustic emission apparatus of this patent is to launch sound wave in certain angular air of transmitting, therefore the target in region is arrived at sound wave, as long as the sensitivity of accepting device meets requirement, all it can be positioned, so multiple target can be positioned by this discharger simultaneously.
If apparatus of the present invention are used for the Multi-target position in highway, railway tunnel construction between two linings and face, apparatus of the present invention 1 being fixed on the crossbeam of two lining chassis, the transmitting terminal of transducer 3 points to the center of face.Being inputted 220V alternating current by the device coupler of close power amplifier 6, Switching Power Supply 6 is provided the unidirectional current of positive and negative 15V to signal processor 5, provides positive and negative 80V and the unidirectional current of positive and negative 15V, signal processor and close power amplifier to start working to close power amplifier 3.If orientation distance requires to reach 300 meters farthest, triggering signal is inputted 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, interval 1s, this signal is input to the power amplifier input of D-type power amplifier 13, after being amplified by 13 power amplifier outfan to transformator 14, after transformer boost, high voltage by transformator output peak value 280V, this voltage is input to transducer voltage input 9, promotes transducer 3 to work.8.5KHz is sent by transducer 3, persistent period 100ms, the sound wave of interval 1s, sonic propagation to two lining with face between all workmens mobile phone on, by WIFI, signal is transferred to computer by mobile phone, calculated every workmen to the distance acoustic emission point by computer, reach the purpose of instant dynamic multi-objective location.
Claims (8)
1. the acoustic emission apparatus that can be used for Multi-target position, it is characterized in that being made up of cabinet, transducer, close power amplifier, signal processor and Switching Power Supply with transformator, transducer, close power amplifier, signal processor, Switching Power Supply are assemblied in cabinet together；
Accessing 220V electric main, Switching Power Supply is powered to signal processor and close power amplifier so that it is work, signal processor output interval harmonic signal, after close power amplifier amplifies, then through transformer boost, supplies transducer, evokes transducer vibrations；Transducer is the impact point needed for interval simple harmonic quantity acoustic emission to Multi-target position, make speed that the equipment of each impact point propagates in atmosphere according to sound wave and time determine the impact point distance from acoustic emission point, reach a little to launch the purpose that multiple target positions simultaneously.
The acoustic emission apparatus of Multi-target position the most according to claim 1, it is characterised in that described cabinet is cuboid, the square bodily form, hexahedron or tubular thin walled shell, material selection metal；The front end of transducer is provided with safe wire netting, additionally, block without any other；It is additionally provided with 220V exchange input socket and the signal input-output socket of water-proof function above cabinet, and there are four connecting accessories of integral installation.
The acoustic emission apparatus of Multi-target position the most according to claim 1 and 2, it is characterized in that described transducer is sequentially connected with is formed by attachment bolt, rear end cap, piezoelectric ceramic piece and voltage input end, amplitude transformer, impedance matching layer, impedance matching enhancement Layer, rear end cap, piezoelectric ceramic piece pass through together with bolt-connection with amplitude transformer；Wherein, piezoelectric ceramic piece is that loop configuration, thickness and inner and outer diameter determine according to the frequency of sound wave launched, the potsherd of 3 to 10 pieces of loop configuration be composed in series；This transducer, 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.
The acoustic emission apparatus of Multi-target position the most according to claim 3, it is characterised in that described transducer determines the interval simple harmonic quantity sound wave of frequency for launching, if intensity can not meet the needs of multipoint positioning, do as one likes can be penetrated in identical transducer group paroxysm.
5. according to the acoustic emission apparatus of the Multi-target position described in claim 3 or 4, it is characterized in that described close power amplifier is sequentially connected with by the D-type power amplifier and transformator bridging output to form, power at positive and negative 80V and positive and negative 15V power supply, in the case of power amplifier input input peak-to-peak value 8V interval harmonic signal, this power amplifier has power supply, signal, protection, slicing indicates, radiator fan power supply exports, temperature protection, middle point protection, under-voltage protection, the function of overcurrent protection, its outfan can export 1500 watts of power, Voltage Peak peak value 180V, enter transformator；This power amplifier and output transformator coordinate the high voltage of 200V to the 1500V required for output transducer.
The acoustic emission apparatus of Multi-target position the most according to claim 5, it is characterized in that described signal processor is formed through circuit connection by microprocessor, wave filter, eight bit switches, outer triggering signal input, and had power input and signal output part；Under positive and negative 15V electric power thus supplied, the interval harmonic signal of peak-to-peak value 8V is provided for close power amplifier, realizes the switching of external trigger and internal trigger by adjusting eight bit switches, and adjust the make-and-break time of output signal, it is ensured that during signal is interrupted, zero-signal exports.
7. according to the acoustic emission apparatus of the Multi-target position described in claim 1,2,4 or 6, it is characterized in that described Switching Power Supply provides positive and negative 15V power supply for signal processor, positive and negative 80V and positive and negative 15V power supply is provided, it is ensured that signal processor and close power amplifier normally work for close power amplifier.
8. according to the acoustic emission apparatus of the Multi-target position described in claim 1,2,4 or 6, it is characterised in that the sound wave of transmitting using plurality of mobile phones as receiving terminal, and can combine WIFI and computer completes to be accurately positioned multiobject.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610359967.8A CN105891808B (en) | 2016-05-27 | 2016-05-27 | A kind of acoustic emission apparatus of Multi-target position |
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| CN201610359967.8A CN105891808B (en) | 2016-05-27 | 2016-05-27 | A kind of acoustic emission apparatus of Multi-target position |
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| CN105891808A true CN105891808A (en) | 2016-08-24 |
| CN105891808B CN105891808B (en) | 2019-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099405A (en) * | 2021-03-11 | 2021-07-09 | 武汉大学 | Audio positioning method based on emission angle estimation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113099405B (en) * | 2021-03-11 | 2021-12-17 | 武汉大学 | Audio positioning method based on emission angle estimation |
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| CN105891808B (en) | 2019-02-26 |
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Effective date of registration: 20211206 Address after: 310051 room 1601, building B, No. 459, Qianmo Road, Xixing street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU JUSHENG TECHNOLOGY CO.,LTD. Address before: 200433 No. 220, Handan Road, Shanghai, Yangpu District Patentee before: FUDAN University |
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