CN110230247A - A kind of road structure venereal disease evil detection device and method based on laser doppler technique - Google Patents
A kind of road structure venereal disease evil detection device and method based on laser doppler technique Download PDFInfo
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- CN110230247A CN110230247A CN201910538774.2A CN201910538774A CN110230247A CN 110230247 A CN110230247 A CN 110230247A CN 201910538774 A CN201910538774 A CN 201910538774A CN 110230247 A CN110230247 A CN 110230247A
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 201000010099 disease Diseases 0.000 title claims abstract description 31
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 31
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- 230000001133 acceleration Effects 0.000 claims abstract description 7
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- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 241001269238 Data Species 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
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- 230000005284 excitation Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Traffic Control Systems (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses a kind of road structure venereal disease evil detection device and method based on laser doppler technique, fixed laser Doppler anemometer and fibre optic gyroscope are installed respectively in mounting bracket, and calibration is measured to the mutual depth of parallelism of Laser Doppler Velocimeter respectively；Encoder-mounting bracket and incremental encoder are installed on carrying platform rear-wheel hub；Laser displacement sensor, acceleration transducer and infrared temperature probe are installed respectively on hind axle；Mounting bracket is fixedly installed on carrying platform side plate, and immediately below Laser Doppler Velocimeter alignment hind axle axle center；Power on after equipment preheats 30 minutes and starts to detect.By collecting and recording roadbed subsidence speed and other auxiliary datas.The present invention can be used for quickly detecting structural disease of each period existing for semi-rigid type base road, and achieve the purpose that early detection early detection early stage is handled, and be suitable for the semi-rigid type bases roads such as highway, grade road and municipal road.
Description
Technical field
The invention belongs to technical field of optical detection, and in particular to a kind of road structure based on laser doppler technique
Defect inspection device and method.
Background technique
Road usually forms such as supporting course, steady layer of water, wearing course by multiple functional layers as a kind of single side complex structure body
Recurring structure venereal disease evil such as holding force fault rupture, saturating is easy under the inducements such as water logging, warm contracting, subgrade settlement Deng, each functional layer
The diseases such as the discontinuous, road surface breakage of water, structure.Especially when each functional layer of road is there are when structural disease, can spread rapidly simultaneously
Apparent disease is developed into, and then influences traffic comfortableness and security.Simultaneously when road structure venereal disease evil develops into apparent disease
When can greatly improve disease cost of disposal, and be difficult to eradicate.Therefore, for many years as preventive maintenance is gradually by weight
Depending on the method and apparatus that people are exploring always detection road early structure venereal disease evil that can be quick and lossless.
For above situation, recently as the continuous development of non-destructive testing technology, some corresponding detection devices are also answered
It transports and gives birth to, such as: structural continuity detector, 3D radar detection device etc..Wherein structural continuity detector is to pass through excitation
Device constantly taps road surface using fixed frequency and judges that pavement structure comes to nothing by acquiring and analyzing road surface echo-signal
Disease, although achieving certain effect in the application, detection speed is low, and echo signal components are more, and interpretation difficulty is high, and
And detection disease comparison of ingredients is single, detects its most of use scope of speed lower limit.With the continuous hair of Radar Technology
Exhibition, 3D Radar Technology also gradually move towards field of road detection.3D radar passes through multiple transmitting receiving antennas and uses different frequencies
Rate detects road.But 3D Radar Technology is at present still by radar wavelength, power, detection accuracy, detection speed
The limitations of the factors such as efficiency applies and is not affected by detection unit and owner is widely recognized as.
Summary of the invention
In order to more effectively detect road structure venereal disease evil, the present invention provides a kind of roads based on laser doppler technique
Line structure venereal disease evil detection device and method, for quickly detecting road structure fault rupture, coming to nothing and done to road capacity
Substantially judge out.
The present invention adopts the following technical scheme that solve above-mentioned technical problem
A kind of road structure venereal disease evil detection device based on laser doppler technique, it is characterised in that including road settlement
Speed detector, dynamic load detection device and range unit；
The road settlement speed detector is mainly controlled by Laser Doppler Velocimeter, fibre optic gyroscope, tachymeter
Device, digital signal synchronous acquisition instrument, industrial personal computer and mounting bracket composition, wherein three Laser Doppler Velocimeter are along vehicle driving
Direction is equidistantly successively mounted in mounting bracket, and fibre optic gyroscope is set between adjacent laser Doppler anemometer
In mounting bracket, mounting bracket is fixedly installed on carrying platform side plate, and the laser-Doppler in the middle part of mounting bracket
Tachymeter is directed at the underface in hind axle axle center, and Laser Doppler Velocimeter passes through private cable respectively and is connected to tachymeter control
Device, tachymeter controller and fibre optic gyroscope pass through cable connection to digital signal synchronous acquisition instrument respectively, and digital signal is synchronous
Collected data are transmitted to industrial personal computer and carry out storage analysis by Acquisition Instrument；
The dynamic load detection device is mainly made of laser range finder, acceleration transducer and infrared radiation thermometer,
Middle laser range finder is used to detect the real-time range of carrying axle and road surface and calculates the real-time load for being applied to road surface by the distance
Lotus, infrared radiation thermometer change for real-time detection tire temperature and are used to correct the load for being applied to road surface in real time；Acceleration transducer
Data correct the load for being applied to road surface in real time；
The range unit is mainly made of incremental encoder, counter card and encoder-mounting bracket, wherein increment
Encoder is installed on wheel hub by encoder-mounting bracket and logical counter card acquisition range information, the range information of acquisition are logical
Laser range finder data are crossed to be corrected in real time.
Road structure venereal disease evil detection method of the present invention based on laser doppler technique, it is characterised in that specific
Step are as follows:
(1) the road structure venereal disease evil detection device by described in claim 1 based on laser doppler technique connects electricity
Source starts to detect after preheating 30 minutes, doppler data V measured by second laser Doppler anemometer present position2By vehicle row
The speed component V generated during sailingV2With in vehicle travel process due to velocity component V caused by joltingA2Two parts group
At, since second laser Doppler anemometer present position is that road surface presses and release binding site, therefore its sinking speed is 0,
V2=VV2+VA2；
(2) doppler data V measured by first laser Doppler anemometer present position1In addition to including vehicle travel process
The speed component V of middle generationV1With in vehicle travel process due to velocity component V caused by joltingA1Outside, also comprising due to vehicle
Pitch movement caused by velocity component VY1, therefore herein since the sinking speed that road surface load generates is VC1=V1-V2-
VY1, since the angular speed of fibre optic gyroscope measurement is VG, first laser Doppler anemometer and second laser Doppler anemometer
The distance between be L, therefore VY1=2 π LVG, then VC1=V1-V2-2πLVG；Third Laser Doppler speed can similarly be calculated
Sinking speed V measured by instrument present positionC3=V3-V2-2πLVG；
(3) according to the V for calculating determinationC1And VC3Data and curves carry out accurate interpretation to road structure venereal disease evil, work as VC1With
VC3Absolute value tentatively regarded as when increasing simultaneously be due to road structure it is discontinuous caused by；Work as VC1Increase and VC3Absolute value
It tentatively regards as being due to caused by road structure crack or reflection crack when reduction；Work as VC1Increase and VC3It is basically unchanged
When tentatively regard as be due to caused by road foundation Lack of support, it is final to realize to each existing for semi-rigid type base road
Period, structural disease was used for quickly detecting, and achieved the purpose that early detection early detection early stage is handled, and was suitable for semi-rigid
Property base road Preliminary detection.
The present invention can be used for quickly detecting structural disease of each period existing for semi-rigid type base road, and reach
To the purpose of early detection early detection early stage processing, it is semi-rigid to be suitable for highway, grade road and municipal road etc.
Base's road.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the road structure venereal disease evil detection device in the present invention based on laser doppler technique；
Fig. 2 is the structural schematic diagram of wheel hub in Fig. 1；
Fig. 3 is module connection figure of the invention.
In figure: 1- first laser Doppler anemometer, 2- second laser Doppler anemometer, 3- third laser-Doppler are surveyed
Fast instrument, 4- fibre optic gyroscope, 5- mounting bracket, 6- encoder mounting rack, 7- wheel hub, 8- incremental encoder, 9- laser range finder,
10- acceleration transducer, 11- infrared radiation thermometer.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, the technical solution in specific implementation process of the present invention is carried out clear, complete
Whole explanation.
A kind of road structure venereal disease evil detection device based on laser doppler technique, including road settlement velocity measuring dress
It sets, dynamic load detection device and range unit；
The road settlement speed detector is mainly by Laser Doppler Velocimeter (1,2,3), fibre optic gyroscope 4, survey
Fast instrument controller, digital signal synchronous acquisition instrument, industrial personal computer and mounting bracket composition, wherein three Laser Doppler Velocimeter edges
Vehicle heading is equidistantly successively mounted in mounting bracket 5, and fibre optic gyroscope 4 is set to adjacent laser Doppler survey
In mounting bracket 5 between fast instrument, mounting bracket 5 is fixedly installed on carrying platform side plate, and in 5 middle part of mounting bracket
Laser Doppler Velocimeter alignment hind axle axle center underface, Laser Doppler Velocimeter respectively pass through private cable connect
To tachymeter controller, tachymeter controller and fibre optic gyroscope pass through cable connection to digital signal synchronous acquisition instrument respectively,
Collected data are transmitted to industrial personal computer and carry out storage analysis by digital signal synchronous acquisition instrument；
The dynamic load detection device is mainly by laser range finder 9, acceleration transducer 10 and 11 groups of infrared radiation thermometer
At wherein laser range finder 9 is used to detect the real-time range of carrying axle and road surface and is applied to road surface by distance calculating
Real-time load, infrared radiation thermometer 11 change for real-time detection tire temperature and are used to correct the load for being applied to road surface in real time；Accelerate
Degree 10 data of sensor correct the load for being applied to road surface in real time；
The range unit is mainly made of incremental encoder 8, counter card and encoder-mounting bracket 6, wherein increasing
Amount encoder 8 is installed on wheel hub 7 by encoder-mounting bracket 6 and logical counter card acquires range information, the distance of acquisition
Information is corrected in real time by laser range finder data.
Specific detection process are as follows:
(1) start to detect after above-mentioned apparatus being powered on preheating 30 minutes, position locating for second laser Doppler anemometer 2
Set measured doppler data V2By the speed component V generated in vehicle travel processV2With in vehicle travel process due to jolting
Generated velocity component VA2Two parts composition, since 2 present position of second laser Doppler anemometer is that road surface presses and releases
Binding site is put, therefore its sinking speed is 0, V2=VV2+VA2；
(2) doppler data V measured by 1 present position of first laser Doppler anemometer1In addition to including vehicle driving mistake
The speed component V generated in journeyV1With in vehicle travel process due to velocity component V caused by joltingA1Outside, also comprising due to
Vehicle pitches velocity component V caused by movementY1, therefore herein since the sinking speed that road surface load generates is VC1=V1-V2-
VY1, since the angular speed that fibre optic gyroscope 4 measures is VG, first laser Doppler anemometer 1 and second laser Doppler range rate measurement
The distance between instrument 2 is L, therefore VY1=2 π LVG, then VC1=V1-V2-2πLVG；Third laser-Doppler can similarly be calculated
Sinking speed V measured by 3 present position of tachymeterC3=V3-V2-2πLVG；
(3) according to the V for calculating determinationC1And VC3Data and curves carry out accurate interpretation to road structure venereal disease evil, work as VC1With
VC3Absolute value tentatively regarded as when increasing simultaneously be due to road structure it is discontinuous caused by；Work as VC1Increase and VC3Absolute value
It tentatively regards as being due to caused by road structure crack or reflection crack when reduction；Work as VC1Increase and VC3It is basically unchanged
When tentatively regard as be due to caused by road foundation Lack of support, it is final to realize to each existing for semi-rigid type base road
Period, structural disease was used for quickly detecting, and achieved the purpose that early detection early detection early stage is handled, and was suitable for semi-rigid
Property base road Preliminary detection.
Embodiment above describes basic principles and main features of the invention and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (2)
1. a kind of road structure venereal disease evil detection device based on laser doppler technique, it is characterised in that including road settlement speed
Spend detection device, dynamic load detection device and range unit；
The road settlement speed detector is mainly by Laser Doppler Velocimeter, fibre optic gyroscope, tachymeter controller, number
Word signal synchronous collection instrument, industrial personal computer and mounting bracket composition, wherein three Laser Doppler Velocimeter are along vehicle heading
It is equidistantly successively mounted in mounting bracket, fibre optic gyroscope is set to the installation between adjacent laser Doppler anemometer
On bracket, mounting bracket is fixedly installed on carrying platform side plate, and the Laser Doppler speed in the middle part of mounting bracket
Instrument is directed at the underface in hind axle axle center, and Laser Doppler Velocimeter passes through private cable respectively and is connected to tachymeter controller,
Tachymeter controller and fibre optic gyroscope pass through cable connection to digital signal synchronous acquisition instrument, digital signal synchronous acquisition respectively
Collected data are transmitted to industrial personal computer and carry out storage analysis by instrument；
The dynamic load detection device is mainly made of laser range finder, acceleration transducer and infrared radiation thermometer, wherein swashing
Optar is used to detect the real-time range of carrying axle and road surface and calculates the real-time load for being applied to road surface by the distance, red
Outer temperature measurer changes for real-time detection tire temperature and is used to correct the load for being applied to road surface in real time；Acceleration transducer data are real
Shi Xiuzheng is applied to the load on road surface；
The range unit is mainly made of incremental encoder, counter card and encoder-mounting bracket, wherein incremental encoding
Device is installed on wheel hub by encoder-mounting bracket and logical counter card acquisition range information, and the range information of acquisition is by swashing
Optar data are corrected in real time.
2. a kind of road structure venereal disease evil detection method based on laser doppler technique, it is characterised in that specific steps are as follows:
(1) the road structure venereal disease evil detection device by described in claim 1 based on laser doppler technique powers on pre-
Heat starts to detect after 30 minutes, doppler data V measured by second laser Doppler anemometer present position2By vehicle driving mistake
The speed component V generated in journeyV2With in vehicle travel process due to velocity component V caused by joltingA2Two parts composition, by
It is that road surface presses and release binding site, therefore its sinking speed is 0, V in second laser Doppler anemometer present position2=VV2
+VA2；
(2) doppler data V measured by first laser Doppler anemometer present position1In addition to comprising being produced in vehicle travel process
Raw speed component VV1With in vehicle travel process due to velocity component V caused by joltingA1Outside, also comprising being faced upward due to vehicle
It bows and moves generated velocity component VY1, therefore herein since the sinking speed that road surface load generates is VC1=V1-V2-VY1, by
In fibre optic gyroscope measurement angular speed be VG, between first laser Doppler anemometer and second laser Doppler anemometer
Distance is L, therefore VY1=2 π LVG, then VC1=V1-V2-2πLVG；It can similarly calculate locating for third Laser Doppler Velocimeter
Sinking speed V measured by positionC3=V3-V2-2πLVG；
(3) according to the V for calculating determinationC1And VC3Data and curves carry out accurate interpretation to road structure venereal disease evil, work as VC1And VC3Absolutely
Tentatively regarded as when increasing simultaneously value be due to road structure it is discontinuous caused by；Work as VC1Increase and VC3Absolute value reduces
When tentatively regard as being due to caused by road structure crack or reflection crack；Work as VC1Increase and VC3At the beginning of when being basically unchanged
Step is regarded as being due to caused by road foundation Lack of support, and final realization is to each period existing for semi-rigid type base road
Structural disease is used for quickly detecting, and achievees the purpose that early detection early detection early stage is handled, and is suitable for semi-rigid base
Layer road Preliminary detection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910538774.2A CN110230247B (en) | 2019-06-20 | 2019-06-20 | Road structural defect detection device and method based on laser Doppler technology |
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| CN201910538774.2A CN110230247B (en) | 2019-06-20 | 2019-06-20 | Road structural defect detection device and method based on laser Doppler technology |
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| CN110230247B CN110230247B (en) | 2021-05-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639375A (en) * | 2022-10-14 | 2023-01-24 | 武汉新烽光电股份有限公司 | Laser Doppler velocimeter |
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Cited By (2)
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| CN115639375A (en) * | 2022-10-14 | 2023-01-24 | 武汉新烽光电股份有限公司 | Laser Doppler velocimeter |
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Denomination of invention: Device and method for detecting road structural diseases based on laser Doppler technology Effective date of registration: 20231212 Granted publication date: 20210511 Pledgee: Limited by Share Ltd. Xinxiang branch Pledgor: HENAN GAOYUAN MAINTENANCE TECHNOLOGY OF HIGHWAY Co.,Ltd. Registration number: Y2023980070864 |