CN107976484A - Linear frequency modulation anchor pole detects transceiver sensor and anchor pole detection method - Google Patents
Linear frequency modulation anchor pole detects transceiver sensor and anchor pole detection method Download PDFInfo
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- CN107976484A CN107976484A CN201711171986.9A CN201711171986A CN107976484A CN 107976484 A CN107976484 A CN 107976484A CN 201711171986 A CN201711171986 A CN 201711171986A CN 107976484 A CN107976484 A CN 107976484A
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- 238000001514 detection method Methods 0.000 title claims description 18
- 230000001133 acceleration Effects 0.000 claims abstract description 36
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 230000005284 excitation Effects 0.000 claims abstract description 7
- 238000003491 array Methods 0.000 claims abstract description 5
- 230000003321 amplification Effects 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 11
- 230000002950 deficient Effects 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 229910052573 porcelain Inorganic materials 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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
-
- 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
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of linear frequency modulation anchor pole to detect transceiver sensor, it includes sensor housing, acceleration signal receiver and multiple piezoelectric ceramics emission arrays, the multiple piezoelectric ceramics emission array is uniformly arranged in the circumferential direction on the bottom surface of sensor housing, and the acceleration signal receiver is arranged on the axle center of sensor housing bottom surface；The sensor housing is used for the excitation face for being installed on tested anchor pole exposed end portion, the signal input part of the multiple piezoelectric ceramics emission array is used to access chirp signals, and the signal output part of acceleration signal receiver detects the signal output part of transceiver sensor for linear frequency modulation anchor pole.The present invention has the advantages that emission band is wide, energy is big, penetration power is strong, decay is small, auto-correlation is good, operating distance is big, easily detects, is small and controllable.
Description
Technical field
The present invention relates to Geophysical technique field, and in particular to a kind of linear frequency modulation anchor pole detects transceiver sensor
And anchor pole detection method.
Background technology
At present, sonic detection technology is that Detection of Bolt Bonding Integrity Non-Destructive Testing predominantly detects means.Stress Acoustic Reflection Method
Main Basiss for anchor pole detection are the kinematics characteristic and dynamics that ripple is propagated in anchor pole, though the method is extensive
Using, but its testing result is often closely bound up with the operating experience of testing staff, does not reach extra high accuracy rate, detection essence
Degree is difficult to hold, so being difficult to the requirement for meeting Practical Project.
The content of the invention
It is an object of the invention to for problems of the prior art, propose a kind of linear frequency modulation anchor pole detection transmitting-receiving
Integrative sensor, the sensor have emission band is wide, energy is big, penetration power is strong, decay is small, auto-correlation is good, operating distance is big,
Easily detection, small and controllable advantage.
In order to solve the above technical problems, a kind of linear frequency modulation anchor pole detection transceiver sensor disclosed by the invention, its
It is characterized in that：It includes sensor housing, acceleration signal receiver and multiple piezoelectric ceramics emission arrays, the multiple piezoelectricity
Ceramic emission array is uniformly arranged in the circumferential direction on the bottom surface of sensor housing, and the acceleration signal receiver is arranged on sensing
The axle center of device housing bottom surface；The sensor housing is used for the excitation face for being installed on tested anchor pole exposed end portion, the multiple pressure
The signal input part of electroceramics emission array is used to access chirp signals (linear FM signal), acceleration signal receiver
Signal output part detects the signal output part of transceiver sensor for linear frequency modulation anchor pole.
Beneficial effects of the present invention：
Linear frequency modulation anchor pole detection transceiver sensor of the present invention is with emission band is wide, energy is big, penetration power is strong, declines
Reduction, auto-correlation is good, operating distance is big, easy the advantages that detecting, is small and controllable, can overcome manual hand hammer focus frequency band
Narrow, the shortcomings of frequency is low, volume is heavy, if substituting manual hand hammer focus conventional at present with the linear FM signal focus,
Inherently greatly increase the accuracy rate of anchor pole detection.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the schematic cross-sectional view of the present invention；
Fig. 3 is the overhaul flow chart of the present invention.
Wherein, 1-sensor housing, 2-acceleration signal receiver, 3-multiple piezoelectric ceramics emission arrays, 4-subtract
Shake set, 5-chirp signal sources, 6-signal amplification module, 7-power amplifier module, 8-processor.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail：
A kind of linear frequency modulation anchor pole detection transceiver sensor of the present invention, as depicted in figs. 1 and 2, it includes sensing
Device housing 1, acceleration signal receiver 2 and multiple piezoelectric ceramics emission arrays 3, the multiple 3 edge of piezoelectric ceramics emission array
Circumferentially it is uniformly arranged on the bottom surface of sensor housing 1, the acceleration signal receiver 2 is arranged on 1 bottom surface of sensor housing
Axle center；The sensor housing 1 is used for the excitation face for being installed on tested anchor pole exposed end portion, the multiple piezoelectric ceramics transmitting
The signal input part of array 3 is used to access chirp signals, and the signal output part of acceleration signal receiver 2 is linear frequency modulation anchor
Bar detects the signal output part of transceiver sensor.Chirp signals are with emission band is wide, energy is big, penetration power is strong, decay
Small, the advantages of auto-correlation is good, operating distance is big.
In above-mentioned technical proposal, the acceleration signal receiver 2 is wrapped with shock-absorbing sleeve 4.Acceleration signal is improved to connect
Receive the accuracy that device 2 receives signal.
In above-mentioned technical proposal, the bottom surface of the sensor housing 1 can be installed on tested anchor pole exposed junction by couplant
The excitation face in portion.
In above-mentioned technical proposal, the piezoelectric ceramics emission array 3 has four.
In above-mentioned technical proposal, the sensor housing 1 is cylindrical housings, 1 bottom surface of sensor housing and top surface
Radius be 9mm.The design causes sensor housing 1 and the excitation face of anchor pole exposed end portion to be adapted to, it is ensured that anchor pole detection knot
The accuracy of fruit.
A kind of linear frequency modulation anchor pole detection method using the sensor, as shown in figure 3, it includes the following steps：
Step 1：Chirp signal sources 5 send original linear FM encoding；
Step 2：The signal amplitude of original linear FM encoding is amplified by signal amplification module 6；
Step:3：Linear frequency modulation coding after Amplitude amplification is carried out power amplification by power amplifier module 7；
Step 4：Linear frequency modulation after power amplification is encoded to piezoelectric ceramics emission array 3 and sent by power amplifier module 7；
Step 5：Piezoelectric ceramics emission array 3 encodes to transmit to tested anchor pole according to the linear frequency modulation after power amplification to be vibrated
Signal；
Step 6：Vibration signal produces the reflection acceleration signal of vibration in rock stratum where tested anchor pole and tested anchor pole；
Step 7：Acceleration signal receiver 2 receives the reflection acceleration signal of above-mentioned vibration, and by above-mentioned vibration
Reflection acceleration signal is sent to processor 8；
Step 8：Processor 8 identifies the reflection acceleration of tested anchor vibration of bar in the reflection acceleration signal of vibration
Signal, and the reflection acceleration signal to being tested anchor vibration of bar carries out integration twice and obtains the corresponding displacement signal of acceleration,
Imaging is carried out to displacement signal and forms displacement and the collection of illustrative plates of time, can determine that according to the collection of illustrative plates of the displacement and time tested
It is whether defective inside anchor pole, and it is defective when specific location of the defect inside tested anchor pole.
The pumping signal to be sent is become the acoustic signals of acoustic wave array by the present invention by linear frequency modulation, is sent to anchor
In bar, this acoustic wave array is arranged in a combination by way of radial compound and by special, has transceiver
Feature, the acceleration vibrations reflection that anchor pole to be measured receives is into acceleration receiver, and acceleration signal by integrating twice
To displacement signal, imaging is carried out to displacement signal and forms waveform.The present invention can solve to receive and dispatch separation before this, easily by people and ring
The problem of border is disturbed.The relevant treatments such as bandwidth reduction are carried out to linear FM signal in receiving terminal, revert to narrow band signal.To dry
For disturbing signal, due to uncorrelated to normal linear FM signal, it is extended on very wide frequency band, so as to greatly reduce
Jamming power in signal passband, and then signal-to-noise ratio is improved, enhance the antijamming capability of system.
The content that this specification is not described in detail belongs to the prior art known to professional and technical personnel in the field.
Claims (8)
1. a kind of linear frequency modulation anchor pole detects transceiver sensor, it is characterised in that：It includes sensor housing (1), accelerates
Spend signal receiver (2) and multiple piezoelectric ceramics emission arrays (3), the multiple piezoelectric ceramics emission array (3) are circumferentially equal
Even to be arranged on the bottom surface of sensor housing (1), the acceleration signal receiver (2) is arranged on sensor housing (1) bottom surface
Axle center；The sensor housing (1) is used for the excitation face for being installed on tested anchor pole exposed end portion, the multiple piezoelectric ceramics hair
The signal input part for penetrating array (3) is used to access chirp signals, and the signal output part of acceleration signal receiver (2) is linear
Frequency modulation anchor pole detects the signal output part of transceiver sensor.
2. linear frequency modulation anchor pole according to claim 1 detects transceiver sensor, it is characterised in that：The acceleration
Signal receiver (2) is wrapped with shock-absorbing sleeve (4).
3. linear frequency modulation anchor pole according to claim 1 detects transceiver sensor, it is characterised in that：The sensor
The bottom surface of housing (1) can be installed on the excitation face of tested anchor pole exposed end portion by couplant.
4. linear frequency modulation anchor pole according to claim 1 detects transceiver sensor, it is characterised in that：The piezoelectricity pottery
Porcelain emission array (3) has four.
5. linear frequency modulation anchor pole according to claim 1 detects transceiver sensor, it is characterised in that：The sensor
Housing (1) is cylindrical housings, and the radius of sensor housing (1) bottom surface and top surface is 9mm.
6. a kind of linear frequency modulation anchor pole detection method using sensor described in claim 1, it is characterised in that it includes as follows
Step：
Step 1：Chirp signal sources (5) send original linear FM encoding；
Step 2：The signal amplitude of original linear FM encoding is amplified by signal amplification module (6)；
Step:3：Linear frequency modulation coding after Amplitude amplification is carried out power amplification by power amplifier module (7)；
Step 4：Linear frequency modulation after power amplification is encoded to piezoelectric ceramics emission array (3) and sent by power amplifier module (7)；
Step 5：Piezoelectric ceramics emission array (3) encodes to tested anchor pole according to the linear frequency modulation after power amplification and transmits vibration letter
Number；
Step 6：Vibration signal produces the reflection acceleration signal of vibration in rock stratum where tested anchor pole and tested anchor pole；
Step 7：Acceleration signal receiver (2) receives the reflection acceleration signal of above-mentioned vibration, and by the anti-of above-mentioned vibration
Penetrate acceleration signal and be sent to processor (8)；
Step 8：Processor (8) identifies the reflection acceleration letter of tested anchor vibration of bar in the reflection acceleration signal of vibration
Number, and the reflection acceleration signal to being tested anchor vibration of bar carries out integration twice and obtains the corresponding displacement signal of acceleration, it is right
Displacement signal carries out imaging and forms displacement and the collection of illustrative plates of time, and tested anchor is can determine that according to the collection of illustrative plates of the displacement and time
It is whether defective inside bar, and it is defective when specific location of the defect inside tested anchor pole.
7. linear frequency modulation anchor pole detection method according to claim 6, it is characterised in that：In the step 8, processor
(8) reflection of tested anchor vibration of bar is identified in the reflection acceleration signal of vibration by reflecting the intensity of acceleration signal
Acceleration signal.
8. linear frequency modulation anchor pole detection method according to claim 6, it is characterised in that：The step 8 displacement and when
Between collection of illustrative plates in find waveform catastrophe point, and specific location of the defect inside tested anchor pole is determined by waveform catastrophe point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171986.9A CN107976484A (en) | 2017-11-22 | 2017-11-22 | Linear frequency modulation anchor pole detects transceiver sensor and anchor pole detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711171986.9A CN107976484A (en) | 2017-11-22 | 2017-11-22 | Linear frequency modulation anchor pole detects transceiver sensor and anchor pole detection method |
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| CN107976484A true CN107976484A (en) | 2018-05-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231410A (en) * | 2019-06-12 | 2019-09-13 | 武汉市工程科学技术研究院 | Anchor pole detection without damage data intelligence means of interpretation |
| CN111307956A (en) * | 2019-12-19 | 2020-06-19 | 中国航空工业集团公司北京长城航空测控技术研究所 | Guided wave signal excitation circuit based on linear frequency modulation signal |
| CN111855797A (en) * | 2020-06-29 | 2020-10-30 | 广州市高速公路有限公司 | Method and system for rapidly detecting grouting quality of pore |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231410A (en) * | 2019-06-12 | 2019-09-13 | 武汉市工程科学技术研究院 | Anchor pole detection without damage data intelligence means of interpretation |
| CN111307956A (en) * | 2019-12-19 | 2020-06-19 | 中国航空工业集团公司北京长城航空测控技术研究所 | Guided wave signal excitation circuit based on linear frequency modulation signal |
| CN111307956B (en) * | 2019-12-19 | 2023-08-01 | 中国航空工业集团公司北京长城航空测控技术研究所 | Guided wave signal excitation circuit based on linear frequency modulation signal |
| CN111855797A (en) * | 2020-06-29 | 2020-10-30 | 广州市高速公路有限公司 | Method and system for rapidly detecting grouting quality of pore |
| CN111855797B (en) * | 2020-06-29 | 2024-01-30 | 广州市高速公路有限公司 | Quick detection method and system for grouting quality of pore canal |
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