CN102175615A - Optical fiber coupling photoaccoustic detection probe and positioning method of target to be measured thereof - Google Patents
Optical fiber coupling photoaccoustic detection probe and positioning method of target to be measured thereof Download PDFInfo
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- CN102175615A CN102175615A CN 201110031825 CN201110031825A CN102175615A CN 102175615 A CN102175615 A CN 102175615A CN 201110031825 CN201110031825 CN 201110031825 CN 201110031825 A CN201110031825 A CN 201110031825A CN 102175615 A CN102175615 A CN 102175615A
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Abstract
The invention discloses an optical fiber coupling photoaccoustic detection probe and a positioning method of a target to be measured thereof. A probe base body is internally provided with optical fiber, a sound-sensitive inner ring and a sound-sensitive outer ring. The positioning method of the target to be measured comprises the following steps of: transmitting optical pulses to the target to be measured; transmitting a sound wave emitted from the end head of the optical fiber to the target to be measured, and reflecting the sound wave; transmitting the reflected sound wave to a B point of the sound-sensitive outer ring and an A point of the sound-sensitive inner ring; and determining a distance r2 from the target C to be measured to the B point of the sound-sensitive outer ring and a distance r1 from the target C to be measured to the A point of the sound-sensitive inner ring, wherein three edges formed by points of a triangle ABC are all given because a distance d1 between the A point of the sound-sensitive inner ring and the B point of the sound-sensitive outer ring is given, therefore the distance and the position from the target C to be measured to the optical fiber coupling photoaccoustic detection probe are obtained. In the invention, any point of the target to be measured can be detected without regulating a light path and a triangle formed by the sound path of the sound wave and the central points of the sound-sensitive inner ring and the sound-sensitive outer ring can be accurately positioned; and the optical fiber coupling photoaccoustic detection probe has the advantages of simplifying detection system design and being flexible and convenient for use.
Description
Technical field
The present invention relates to photoacoustic detection technique, particularly a kind of optical fiber coupling light sound detection probe and object localization method to be measured thereof.
Background technology
Detection technique can reflect all departments, industry, the whole technical merit in area even country, can bring tangible economic benefit and social benefit.Along with the requirement of quality monitoring and health care etc. is more and more stricter, detection technique is also had higher requirement.In order to satisfy the demand of commercial production and health care etc., need to adopt multiple detection means to carry out test and diagnostic, photo-acoustic detection has obtained using widely in industrial detection and medical diagnosis field as a kind of emerging detection technique.
Photoacoustic detection technique adopts light pulse as exciting signal source, and the acoustical signal that light pulse inspires in body to be measured is received by the quick material of sound, by the acoustical signal that receives being analyzed and handled detection and the diagnosis that realizes body to be measured.At present, optical devices such as the main scioptics of light pulse path, prism carry out path conversion and check point location, are received by the quick material of sound again; Navigate on the object under test after perhaps the output optical pulse of light source being derived by optical fiber, received by the quick material of sound, light path is separated with the sound travel signal like this, and volume is big, uses inconvenient; For the detection probe of independent sending and receiving, just probe that received signal is measured and the sound path between the impact point, and can't measure the absolute position at impact point place.Therefore, be necessary to propose both can measure the distance of impact point, can determine the integrated probe of impact point position again.
Summary of the invention
For overcoming the shortcoming and defect that prior art exists, patent of the present invention aim to provide a kind of volume little, use convenient, incorporate optical fiber coupling light sound detection probe, compared with prior art, the present invention had both taken into account the range determination between probe and the impact point, again can be to impact point determining with respect to the probe position.
Another goal of the invention of the present invention is, the object localization method to be measured of above-mentioned optical fiber coupling light sound detection probe is provided.
The present invention is achieved through the following technical solutions:
A kind of optical fiber coupling light sound detection probe, comprise the probe matrix, in the probe matrix, be provided with optical fiber, sound quick interior ring, the quick outer shroud of sound also are set in the described probe matrix, ring placed in the quick outer shroud of sound in this was quick, the termination of optical fiber places in the quick interior ring of sound, and the termination of ring, quick outer shroud, optical fiber was horizontally disposed in described sound was quick.The quick outer shroud of ring harmony was made by the quick material of sound in described sound was quick; The quick material of described sound can adopt piezoceramic material or piezo-electricity composite material.The quick outer shroud of ring harmony was connected by the signal conditioning circuit of lead with the outside in described sound was quick.
The object localization method to be measured of above-mentioned optical fiber coupling light sound detection probe, comprise the steps: that light source is transmitted into target C point to be measured by the termination of optical fiber with light pulse, the termination of optical fiber inspires sound wave, sonic propagation is to target C point to be measured and by target C surface reflection to be measured, the A point that the B point that reflected sound wave successively propagates into the quick outer shroud of sound encircles in quick with sound, again according to the velocity of sound and time relation determine target C point to be measured to the B of the quick outer shroud of sound order apart from r
2With target C point to be measured to sound quick in the ring A order apart from r
1, since sound quick between the B point of the A point of ring and quick outer shroud apart from d
1Known, then leg-of-mutton three limits of Δ ABC point formation are all known, promptly obtain distance and the position of target C point to be measured to optical fiber coupling light sound detection probe.
The present invention has following advantage and beneficial effect with respect to prior art:
The present invention has and can detect in the arbitrfary point on the target to be measured, and do not need to adjust light path, probe of the present invention not only can accurately be measured the distance between target to be measured and the probe, and according to the sound path of sound wave and sound quick in the triangle that constituted of ring and outer shroud central point, accurately locate position to target to be measured place, improve security of system, simplify detection system design, advantage flexible and convenient to use.
The present invention is integrated in one coupled fiber and the quick material of sound, realized that promptly the light emission signal of photo-acoustic detection and sound reception signal are in one, the accurate location that simultaneously can realize the impact point of surveying, this probe has simple and compact for structure, applied range, high, the volume characteristics little and flexible and convenient to use of stability can be widely used in the every field that Non-Destructive Testing and medical diagnosis etc. can carry out photo-acoustic detection.
Description of drawings
Fig. 1 is the perspective structure synoptic diagram of optical fiber coupling light sound detection probe of the present invention.
Fig. 2 is the end side TV structure synoptic diagram of optical fiber coupling light sound detection probe of the present invention.
Fig. 3 is the method synoptic diagram that optical fiber coupling light sound detection probe of the present invention is measured with the position and located the distance of target to be measured.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, optical fiber coupling light sound detection probe of the present invention, comprise probe matrix 4, in probe matrix 4, be provided with coupled fiber 3, probe also be provided with in the matrix 4 sound quick in ring 5, quick outer shroud 6, ring 5 placed in the quick outer shroud 6 of sound in this was quick, the termination of coupled fiber 3 places in the quick interior ring 5 of sound, the termination of the quick interior ring 5 of this, the quick outer shroud 6 of sound, coupled fiber 3 is horizontally disposed in the end of probe matrix 4, and three (i.e. the interface of the quick outer shroud 6 of quick interior ring 5 harmony of sound and the termination of coupled fiber 3) constitutes a plane; Ring 5 was connected with lead 1 in described sound was quick, and the quick outer shroud 6 of described sound is connected with lead 2, and lead 1 is connected with the signal conditioning circuit (not shown) of outside respectively with lead 2; Coupled fiber is connected with the light source of outside.
The quick outer shroud of ring harmony was made by the quick material of sound in above-mentioned sound was quick, as piezoceramic material or piezo-electricity composite material etc.
As Fig. 2, shown in Figure 3, the present invention is integrated in one coupled fiber 3 and the quick material of sound, realize the integrated emission and the reception of photo-acoustic detection, simultaneously according to the acoustic reflection interface to probe sound quick in the sound path of ring 5 and the quick outer shroud 6 of sound encircle the triangle that quick outer shroud 6 central points of 5 harmony are constituted with sound in quick and carry out target localization.
The object localization method to be measured of above-mentioned optical fiber coupling light sound detection probe, specifically as shown in Figure 3, comprise the steps: that the termination O of light source by coupled fiber 3 light pulse of naming a person for a particular job is transmitted into the C point of target to be measured, the termination O point of coupled fiber inspires sound wave, sonic propagation is to the C point of target to be measured and in the surface reflection of the C of target to be measured point, the B point that reflected sound wave successively propagates into the quick outer shroud 6 of sound encircles 5 A point with sound in quick, again the C point of determining target to be measured according to the velocity of sound and time relation to the B of the quick outer shroud 6 of sound order apart from r
2With the C point of target to be measured to sound quick in the A of ring 5 order apart from r
1, since sound quick between the B point of ring 5 A point and quick outer shroud 6 apart from d
1Known, then three limits of Δ ABC point formation are all known, can obtain distance and the absolute position of the C point of target to be measured to optical fiber coupling light sound detection probe.
Just can realize the present invention preferably as mentioned above.
The foregoing description is a preferred implementation of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. an optical fiber coupling light sound detection is popped one's head in, comprise the probe matrix, in the probe matrix, be provided with coupled fiber, it is characterized in that: sound quick interior ring, the quick outer shroud of sound also are set in the described probe matrix, ring placed in the quick outer shroud of sound in this was quick, the termination of coupled fiber places in the quick interior ring of sound, and the termination of ring, quick outer shroud, coupled fiber was horizontally disposed in described sound was quick.
2. optical fiber coupling light sound detection probe according to claim 1 is characterized in that: the quick outer shroud of ring harmony was made by the quick material of sound in described sound was quick.
3. optical fiber coupling light sound detection probe according to claim 2 is characterized in that: the quick material of described sound is a piezoceramic material.
4. optical fiber coupling light sound detection probe according to claim 2 is characterized in that, the quick material of described sound is a piezo-electricity composite material.
5. according to each described optical fiber coupling light sound detection probe in the claim 1～4, it is characterized in that: the quick outer shroud of ring harmony was connected by the signal conditioning circuit of lead with the outside in described sound was quick.
6. the object localization method to be measured of the described optical fiber coupling light of claim 5 sound detection probe, it is characterized in that comprising the steps: that light source is transmitted into light pulse by the termination of coupled fiber the C point of target to be measured, the termination of coupled fiber inspires sound wave, sonic propagation is to the C point of target to be measured and by the surface reflection of the C of target to be measured point, the A point that the B point that reflected sound wave successively propagates into the quick outer shroud of sound encircles in quick with sound, again the C point of determining target to be measured according to the velocity of sound and time relation to the B of the quick outer shroud of sound order apart from r
2With the C point of target to be measured to sound quick in the A of ring order apart from r
1, since sound quick between the B point of the A point of ring and quick outer shroud apart from d
1Known, then three limits of Δ ABC point formation are all known, promptly obtain relative position and the distance of the C point of target to be measured to optical fiber coupling light sound detection probe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110031825 CN102175615A (en) | 2011-01-28 | 2011-01-28 | Optical fiber coupling photoaccoustic detection probe and positioning method of target to be measured thereof |
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| CN 201110031825 CN102175615A (en) | 2011-01-28 | 2011-01-28 | Optical fiber coupling photoaccoustic detection probe and positioning method of target to be measured thereof |
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| CN102175615A true CN102175615A (en) | 2011-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691390A (en) * | 2017-01-22 | 2017-05-24 | 中国科学院深圳先进技术研究院 | Photoacoustic probe and photoacoustic imaging system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6074199A (en) * | 1998-02-10 | 2000-06-13 | Song; Jin | Sound producing candle |
| CN101569542A (en) * | 2009-06-05 | 2009-11-04 | 华南理工大学 | Distributed type-B ultrasonic inspection system and processing method for ultrasonic detection signals thereof |
| CN101788569A (en) * | 2009-12-31 | 2010-07-28 | 中国科学院声学研究所 | Optical fiber acceleration transducer probe and acceleration transducer system |
| CN101936878A (en) * | 2010-07-28 | 2011-01-05 | 山东大学 | Photo-acoustic spectrum gas detecting system based on distributed feedback optical fiber laser |
| CN202066785U (en) * | 2011-01-28 | 2011-12-07 | 华南理工大学 | Optical fiber coupling opto-acoustic detector probe |
-
2011
- 2011-01-28 CN CN 201110031825 patent/CN102175615A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6074199A (en) * | 1998-02-10 | 2000-06-13 | Song; Jin | Sound producing candle |
| CN101569542A (en) * | 2009-06-05 | 2009-11-04 | 华南理工大学 | Distributed type-B ultrasonic inspection system and processing method for ultrasonic detection signals thereof |
| CN101788569A (en) * | 2009-12-31 | 2010-07-28 | 中国科学院声学研究所 | Optical fiber acceleration transducer probe and acceleration transducer system |
| CN101936878A (en) * | 2010-07-28 | 2011-01-05 | 山东大学 | Photo-acoustic spectrum gas detecting system based on distributed feedback optical fiber laser |
| CN202066785U (en) * | 2011-01-28 | 2011-12-07 | 华南理工大学 | Optical fiber coupling opto-acoustic detector probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691390A (en) * | 2017-01-22 | 2017-05-24 | 中国科学院深圳先进技术研究院 | Photoacoustic probe and photoacoustic imaging system |
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Application publication date: 20110907 |