CN109212037A - A kind of Air Coupling ultrasonic phase array detection device - Google Patents
A kind of Air Coupling ultrasonic phase array detection device Download PDFInfo
- Publication number
- CN109212037A CN109212037A CN201811173122.5A CN201811173122A CN109212037A CN 109212037 A CN109212037 A CN 109212037A CN 201811173122 A CN201811173122 A CN 201811173122A CN 109212037 A CN109212037 A CN 109212037A
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- Prior art keywords
- signal
- ultrasonic
- air coupling
- phase array
- coupling ultrasonic
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/10—Number of transducers
- G01N2291/106—Number of transducers one or more transducer arrays
Abstract
The invention discloses a kind of Air Coupling ultrasonic phase array detection devices, and the parameters such as the tranmitting frequency, sample frequency, voltage energy in each channel, detection process is arranged by ultrasonic transmitter-receiver and signal acquisition and processing unit；Emit signal and sky coupling or contact ultrasonic probe are sent to by ultrasonic transmitter-receiver, the ultrasonic wave inspired of popping one's head in is incident at a certain angle inside tested test block；Inside tested test block refraction and reflection occur for ultrasonic signal, final includes that the echo-signal of test specimen internal flaw information is received by ultrasonic probe and is transmitted to signal receiver, signal is converted to digital signal by signal acquisition unit, into data processing unit, by delay superposition and imaging, complete scanning result imaging at an angle.The invention has the advantages that carrying out parameter setting to transmitted waveform by early period, there can be certain superiority in terms of resolving power, signal-to-noise ratio, defect detection with optimal control coke column length, focal spot size and sound beam direction.
Description
Technical field
The present invention relates to Ultrasonic Nondestructive technical fields, and in particular to a kind of Air Coupling ultrasonic phase array detection dress
It sets.
Background technique
In ultrasound examination, occupy an leading position using couplant or liquid medium as the detection method of propagation medium.
Although the method that electromagnetic ultrasonic wave sensor and laser ultrasonic can be used as non-contact testing, with conventional Ultrasound technology
It compares, wave beam and focus are all difficult to control, and need special installation to meet acoustic wave excitation and the problem of reception is brought.It also needs simultaneously
It to use the safety measures such as shading eyeglasses to prevent laser-ultrasound and electromagnetic acoustic from causing harm to the human body, limit its application model
It encloses.
Non-contact Air Coupling ultrasonic detecting technology has the characteristics that non-contact, non-demolition, non-immersed and safe and harmless, tool
There is good application prospect.Real non-contact detecting may be implemented in it, and there is no the abrasions of energy converter, can carry out in situ quick
Scanning.But due to transducer material and air-borne sound impedance mismatch, Air Coupling ultrasonic transducer has low efficiency, frequency band
Narrow, the disadvantages of pulse remained shock is long, therefore, Air Coupling supersonic detection method parameter, as sensitivity, signal-to-noise ratio and resolution ratio are low
In conventional Ultrasound detection method.Realize the practical application of non-contact air coupling ultrasonic detection system, it is necessary to improve transducing
The parameters such as device efficiency can enter detection workpiece and by air receiver sufficient intensity signal to meet ultrasonic wave by air
Testing requirements.
The excitation for being mainly characterized by each chip in multicrystal transducer of phased-array technique, amplitude and delay are by computer control
It makes, focus ultrasonic wave beam acoustic beam parameter such as angle, focal length and focal spot size etc. can be generated after Piezoelectric anisotropy chip excited target
It is adjusted by software.Scanning acoustic beam is to focus, and the defect of different direction can be detected in a manner of mirror-reflection.In connecing for back wave
During receipts, by certain regular and timing control receiving unit reception and signal synthesis is carried out, then by composite result with appropriate
Form is shown.
In some major advantages of Air Coupling ultrasonic phased array technology:
1. untouchable.Using Air Coupling ultrasonic probe, without contacting detection surface when work, couplant is not needed,
Substantially prolong the service life of probe.
2. flexibility is good.A variety of applications can be covered with a phased array probe, and conventional ultrasound probe has using single
Limit.
3. electrical arrangement.It just can be carried out configuration by load of file and calibration, different ginsengs can be completed by profile
Number adjustment.
4. it is small and exquisite to pop one's head in.Certain special detection environment and object can be detected.
5. speed is fast.Phased-array technique can carry out the scanning of multi-angle and depth, bigger than common single scanning probe speed
Width improves.
Summary of the invention
The object of the present invention is to provide a kind of Air Coupling ultrasonic phase array detection device, scanning process is without artificial behaviour
Make, has many advantages, such as that non-contact, non-demolition, non-immersed, full intelligence, defect scanning type is more, detection efficiency is high.
In order to solve the problems existing in background technology, the present invention adopts the following technical scheme: a kind of Air Coupling is super
Sound phased array detection device, the device include ultrasonic transmitter-receiver, preamplifier, Signal acquiring and processing unit, show
Showing device, multiplexer, Air Coupling phased array probe and connecting line；When ultrasound emission receiver emits ultrasonic wave, process
Multiplexer enters Air Coupling phased array probe, and emits ultrasonic wave to workpiece；Carry useful signal ultrasonic wave again by
Probe receives and sends multiplexer to；It is received and is sent to by ultrasound emission receiver again after amplifier amplifies
Signal acquisition process unit is handled, and is finally shown in display module.Wherein ultrasonic transmitter-receiver is mainly born
Electric signal after duty transmitting electric pulse and receives echo-signal conversion；Multiplexer is responsible for single pass transmitting signal and more
The transmitting signal in a channel is converted；Preamplifier is mainly responsible for the enhanced processing to echo-signal；Signal acquisition unit
It is responsible for analog signal being transformed to digital signal；Data processing unit is responsible for the parameter setting of transmitting signal and folding for echo-signal
Add processing etc.；Display device is responsible for display treated echo-signal；Air Coupling phased array probe is responsible for emitting and receiving super
Sound wave
As a further improvement of the present invention；The Air Coupling ultrasonic phase array detection device, because using phased
Battle array technology excites each unit by certain rule and timing electricity consumption subsystem controls, generates controllable acoustic beam angle and focusing
Depth makes the ultrasonic wave that each unit emits in array be superimposed to form a new wave surface.Equally, in the receive process of back wave
In, by certain regular and timing control receiving unit reception and signal synthesis is carried out, scanning angle and depth can be by operating
Person's definition, scanning speed greatly improve；
As a further improvement of the present invention；The Air Coupling ultrasonic phase array detection device, using Air Coupling
Ultrasonic probe does not need couplant, substantially prolongs the service life of probe without contacting detection surface when work.
As a further improvement of the present invention；The Air Coupling ultrasonic phase array detection device, scanning process can be with
It realizes not mobile probe or lacks mobile probe as far as possible, therefore do not need complicated scanning equipment, pop one's head in even without replacement.
As a further improvement of the present invention；Parameter setting is carried out to transmitted waveform by early period, it can be with optimal control coke
Column length, focal spot size and sound beam direction have certain superiority in terms of resolving power, signal-to-noise ratio, defect detection.
Testing principle of the invention is specific as follows, and during the launch process, ultrasonic transmitter-receiver transmits trigger signal
To multiplexer, the latter translates the signals into specific high electric field pulse, and pulse width is preset, and time delay is by gathering
Depth of focus degree determines；Each chip only receives an electric pulse, and generated ultrasonic beam has certain angle, and focuses on a depthkeeping
Degree, which encounters defect and reflects, and after receives echo-signal, data processing unit is according to respectively for relative focus point
Distance does delay superposition to echo-signal, and these signals is converged together, forms a pulse signal, and the results are shown in
On display unit.
After adopting the above technical scheme, the invention has the following advantages: can be detected with single probe in fixed position
The defect of different location and any direction；Improve the signal-to-noise ratio and quantitation capabilities of ultrasonic testing results；Can have to non-contact
The component of particular/special requirement is detected；Shorten the equipment in use maintenance conditions time, improves production efficiency；With non-contact, scanning
The advantages that range is wide, detection efficiency is high.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the construction module schematic diagram of device provided by the present invention detection.
Fig. 2 is operation principle schematic diagram of popping one's head in device provided by the present invention.
Ultrasonic transmitter-receiver 1, preamplifier 2, display device 3, multiplexer 4, Air Coupling phase in the figure
Battle array probe 5 is controlled, signal acquisition process unit 6 is detected test block 7, the defect 8 inside test specimen, chip 9, ultrasound beamformer 10, wave
Front 11.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and specific implementation
Mode, the present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are only to explain this
Invention, is not intended to limit the present invention.It is illustrated so that side rail four is to Air Coupling ultrasonic transducer as an example below.
Referring to Fig. 1, present embodiment uses following technical scheme: a kind of Air Coupling ultrasonic phase array detection dress
It sets, it includes ultrasonic transmitter-receiver 1, preamplifier 2, display device 3, multiplexer 4, the spy of Air Coupling phased array
First 5, signal acquisition process unit 6 etc..Ultrasonic transmitter-receiver 1 is mainly responsible for transmitting electric pulse and receives echo-signal conversion
Electric signal afterwards；Preamplifier 2 is mainly responsible for the enhanced processing to echo-signal；Signal acquisition unit is responsible for analog signal
It is transformed to digital signal；Data processing unit 6 is responsible for parameter setting and superposition processing of echo-signal of transmitting signal etc.；Display
Device 3 is responsible for display treated echo-signal；Multiplexer 4 is responsible for single pass transmitting signal being converted to multiple channels
Transmitting signal；Air Coupling phased array probe 5 is responsible for transmitting and receives ultrasonic wave.7 be tested test block, and 8 is inside test specimens
Defect, probe test specimen between be air, be not necessarily to couplant.
Fig. 1 and Fig. 2 are please referred to, Fig. 2 is operation principle schematic diagram of popping one's head in device provided by the present invention, Air Coupling phase
Controlling in battle array probe 5 includes multiple chips 9, and the pulse signal of each chip is excited by control, can control each chip and swashs
The time for sending out ultrasonic wave, it will form the ultrasonic wave of controllable direction after multichannel chip emits ultrasonic wave by such time delay
Wave beam 10, to form the wave surface 11 on some direction.
A kind of Air Coupling ultrasonic phase array detection device course of work is as follows: before starting detection, being emitted by ultrasonic wave
The parameters such as the tranmitting frequency, sample frequency, voltage energy in each channel are arranged in receiver and signal acquisition and processing unit, complete
After setting, start detection process；Emit signal and sky coupling or contact ultrasonic probe are sent to by ultrasonic transmitter-receiver, visits
The ultrasonic wave that head inspires is incident at a certain angle inside tested test block；Ultrasonic signal occurs inside tested test block
Refraction and reflection finally include that the echo-signal of test specimen internal flaw information is received by ultrasonic probe and is transmitted to signal and connects
Device is received, signal amplifies by preamplifier is converted to digital signal by signal acquisition unit, into data processing unit, passes through
Delay superposition and imaging, complete scanning result imaging at an angle.Without mobile probe, pass through different transmitting pulses
The scanning that can be completed on multiple angles and depth direction is set, the tested large-scale testing result of test block content is obtained.
The invention discloses a kind of Air Coupling ultrasonic phase array detection devices, pass through ultrasonic transmitter-receiver and signal
The parameters such as the tranmitting frequency, sample frequency, voltage energy in each channel are arranged in acquisition and processing unit, after accomplishing the setting up, start
Detection process；Emit signal sky coupling or contact ultrasonic probe be sent to by ultrasonic transmitter-receiver, popping one's head in inspires
Ultrasonic wave is incident at a certain angle inside tested test block；Refraction and anti-occurs inside tested test block for ultrasonic signal
It penetrates, finally includes that the echo-signal of test specimen internal flaw information receives and be transmitted to signal receiver by ultrasonic probe, believe
Number amplify by preamplifier and digital signal is converted to by signal acquisition unit, it is folded by being delayed into data processing unit
Sum it up imaging, complete scanning result imaging at an angle.Without mobile probe, it is by different transmitting pulse settings
Scanning in achievable multiple angles and depth direction obtains the tested large-scale testing result of test block content.Because using
Air Coupling ultrasonic probe does not need couplant, substantially prolong probe uses the longevity without contacting detection surface when work
Life.Parameter setting is carried out to transmitted waveform by early period, can with optimal control coke column length, focal spot size and sound beam direction,
Resolving power, signal-to-noise ratio, defect detection rate etc. have certain superiority.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (3)
1. a kind of Air Coupling ultrasonic phase array detection device, it is characterised in that it is popped one's head in using Air Coupling ultrasonic phase array, it is non-
Ingress of air coupling ultrasonic detection technique has the characteristics that non-contact, non-demolition, non-immersed and safe and harmless, may be implemented really
Non-contact detecting can carry out quickly scanning in situ there is no the abrasion of energy converter.
2. a kind of Air Coupling ultrasonic phase array detection device according to claim 1, it is characterised in that it is using phased
Battle array technology, the excitation for being mainly characterized by each chip in multicrystal transducer of phased-array technique, amplitude and delay are by computer control
It makes, focus ultrasonic wave beam acoustic beam parameter such as angle, focal length and focal spot size etc. can be generated after Piezoelectric anisotropy chip excited target
It is adjusted by software.Scanning acoustic beam is to focus, and the defect of different direction can be detected in a manner of mirror-reflection.In connecing for back wave
During receipts, by certain regular and timing control receiving unit reception and signal synthesis is carried out, then by composite result with appropriate
Form is shown.
3. a kind of Air Coupling ultrasonic phase array detection device according to claim 1, it is characterised in that pass through early period pair
Transmitted waveform carries out parameter setting, can with optimal control coke column length, focal spot size and sound beam direction, resolving power, signal-to-noise ratio,
Defect detection rate etc. has certain superiority.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173122.5A CN109212037A (en) | 2018-10-09 | 2018-10-09 | A kind of Air Coupling ultrasonic phase array detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811173122.5A CN109212037A (en) | 2018-10-09 | 2018-10-09 | A kind of Air Coupling ultrasonic phase array detection device |
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| Publication Number | Publication Date |
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| CN109212037A true CN109212037A (en) | 2019-01-15 |
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| CN201811173122.5A Withdrawn CN109212037A (en) | 2018-10-09 | 2018-10-09 | A kind of Air Coupling ultrasonic phase array detection device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082655A (en) * | 2019-05-13 | 2019-08-02 | 国网北京市电力公司 | Visualization device detection method and instrument and its application in smart grid |
| CN111830134A (en) * | 2020-07-15 | 2020-10-27 | 上海工程技术大学 | Ultrasonic nondestructive testing system |
| CN111998809A (en) * | 2020-07-28 | 2020-11-27 | 成都唐源电气股份有限公司 | Steel-aluminum composite contact rail abrasion measuring device and measuring method based on ultrasonic measurement |
| CN112270877A (en) * | 2020-09-29 | 2021-01-26 | 中国人民解放军海军工程大学 | Beam forming experiment system, experiment method and high-resolution detection equipment |
| CN112326789A (en) * | 2020-10-28 | 2021-02-05 | 华南理工大学 | Mobile ultrasonic detection method and detection device |
| ES2812373A1 (en) * | 2019-09-16 | 2021-03-16 | Consejo Superior Investigacion | Focusing system for a focused, air-coupled ultrasound emitter, receiver or transducer (Machine-translation by Google Translate, not legally binding) |
| CN113720916A (en) * | 2021-09-02 | 2021-11-30 | 哈尔滨工业大学 | Air coupling ultrasonic detection method and device based on defect probability reconstruction algorithm |
| CN115494160A (en) * | 2022-08-22 | 2022-12-20 | 哈尔滨工业大学 | Phased array air coupling transducer and planar stress ultrasonic measurement method and device thereof |
-
2018
- 2018-10-09 CN CN201811173122.5A patent/CN109212037A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082655A (en) * | 2019-05-13 | 2019-08-02 | 国网北京市电力公司 | Visualization device detection method and instrument and its application in smart grid |
| ES2812373A1 (en) * | 2019-09-16 | 2021-03-16 | Consejo Superior Investigacion | Focusing system for a focused, air-coupled ultrasound emitter, receiver or transducer (Machine-translation by Google Translate, not legally binding) |
| WO2021053254A1 (en) * | 2019-09-16 | 2021-03-25 | Consejo Superior De Investigaciones Científicas | Targeted air-coupled focusing system for an ultrasonic emitter, receiver or transducer |
| CN111830134A (en) * | 2020-07-15 | 2020-10-27 | 上海工程技术大学 | Ultrasonic nondestructive testing system |
| CN111998809A (en) * | 2020-07-28 | 2020-11-27 | 成都唐源电气股份有限公司 | Steel-aluminum composite contact rail abrasion measuring device and measuring method based on ultrasonic measurement |
| CN112270877A (en) * | 2020-09-29 | 2021-01-26 | 中国人民解放军海军工程大学 | Beam forming experiment system, experiment method and high-resolution detection equipment |
| CN112326789A (en) * | 2020-10-28 | 2021-02-05 | 华南理工大学 | Mobile ultrasonic detection method and detection device |
| CN113720916A (en) * | 2021-09-02 | 2021-11-30 | 哈尔滨工业大学 | Air coupling ultrasonic detection method and device based on defect probability reconstruction algorithm |
| CN115494160A (en) * | 2022-08-22 | 2022-12-20 | 哈尔滨工业大学 | Phased array air coupling transducer and planar stress ultrasonic measurement method and device thereof |
| CN115494160B (en) * | 2022-08-22 | 2023-12-05 | 哈尔滨工业大学 | Phased array air coupling transducer and plane stress ultrasonic measurement method and device thereof |
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