CN208109075U - A kind of subgrade settlement detection device based on laser - Google Patents
A kind of subgrade settlement detection device based on laser Download PDFInfo
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- CN208109075U CN208109075U CN201820068216.5U CN201820068216U CN208109075U CN 208109075 U CN208109075 U CN 208109075U CN 201820068216 U CN201820068216 U CN 201820068216U CN 208109075 U CN208109075 U CN 208109075U
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- laser
- subgrade settlement
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- settlement detection
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Abstract
A kind of subgrade settlement detection device based on laser, including sedimentation stake, observation stake, laser emitting unit, subgrade settlement detection unit, signal processing unit and power supply unit, it is attached between the subgrade settlement unit and signal processing unit by wired or wireless way, the power supply unit provides required regulated power supply for each unit；The laser emitting unit is mounted in sedimentation stake, the sedimentation stake is embedded at electricity to be measured, the subgrade settlement unit is mounted in observation stake corresponding with sedimentation stake, except observation stake subgrade settlement deformed area, do not occur sedimentation or its settling amount negligible point compared with measured point, the utility model a kind of subgrade settlement detection device based on laser is provided, can the sedimentation to roadbed remotely measured, measurement accuracy is high, and timeliness is good.
Description
Technical field
The utility model relates to field of optical measuring technologies more particularly to a kind of subgrade settlement based on laser to detect dress
It sets.
Background technique
Subgrade settlement is all difficult to avoid that during road construction and after the completion, due to sedimentation, differential settlement,
Track settlement and orbital plane can be caused to be bent, influence the planarization of route, in the track by bridge, abutment and road can be caused
The differential settlement of base, when train crosses these locations, due to orbit rigidity caused by settling and deformation mutation, so that wheel track
The power of part, which acts on, to be increased, and so as to cause track failure, is influenced the stationarity and safety of driving, is existed to understand roadbed in time
Settling and settle variation tendency under load effect prevents the generation of accident to adopt an effective measure in advance, needs in road
Work progress in and a period of time after the completion in be arranged settlement observation.
It is existing mainly to have cup sedimentometer for measurement road the Settlement Observation device, sedimentation plate measuring device, cut open
Face sedimentometer, pvc pipe sedimentometer, magnet ring sedimentometer, in general, generally existing following three major defects of the prior art：（1）According to
It manually measures or record, inefficiency, measurement accuracy is low；（2）Measurement can not be monitored remotely, can not carry out automatic measurement, people
The subjective factor of member is larger；（3）When selecting datum mark, stability and low cost cannot get both.
Summary of the invention
For and solve the above problems, the utility model provides a kind of subgrade settlement detection device based on laser, can be right
The sedimentation of roadbed is remotely measured, and measurement accuracy is high, and timeliness is good.
A kind of subgrade settlement detection device based on laser, including sedimentation stake, observation stake, laser emitting unit, roadbed are heavy
Detection unit, signal processing unit and power supply unit drop, by having between the subgrade settlement unit and signal processing unit
Line or wireless mode are attached, and the power supply unit provides required regulated power supply for each unit；
The laser emitting unit is mounted in sedimentation stake, and the sedimentation stake is embedded at electricity to be measured, the subgrade settlement
Unit be mounted on in the corresponding observation stake of sedimentation stake, except observation stake subgrade settlement deformed area, do not occur to settle or its
Settling amount negligible point compared with measured point；
The laser emitting unit includes laser, divergent lens, mounting box, the laser and divergent lens by installing
Bracket is fixedly mounted in mounting box, and the subgrade settlement detection unit includes filter plate, imaging len, optoelectronic position detection
Device, signal processor, measuring signal transmission circuit and mounting box, the filter plate, imaging len, photoelectrical position sensor are by three
A bracket is fixedly mounted in mounting box, and filter plate can filter out all light waves in addition to wavelength is optical maser wavelength, and will
Filtered light is irradiated on imaging len, and the optical axis of the imaging len and the photosurface of photoelectric position detector are vertical.
As the further preferred of the utility model, the laser optionally includes solid state laser, semiconductor laser
Device, optical fiber laser.
As the further preferred of the utility model, the photoelectric position detector time linear array charge coupled device or face battle array
Any one in charge coupled device or four-quadrant photo detector or position sensitive detector.
As the further preferred of the utility model, the observation stake is made of pedestal and vertical column, the vertical column
Bottom end is vertically fixed on pedestal, offers a plurality of cavities at equal intervals perpendicular to column axis direction on the vertical column, institute
Subgrade settlement detection power supply is stated to be fixedly mounted in the cavity.
As the further preferred of the utility model, the laser emitting light is parallel to the horizontal plane, spectroscope and level
Angle between face is 45 °, and the light of laser emitting is divided into horizontal and vertical two optical paths by spectroscope.
As the further preferred of the utility model, the quantity of the subgrade settlement detection device is set as 5-10.
The beneficial effects of the utility model：
1, subgrade settlement is measured using technique of laser imaging, avoids human error, measurement accuracy is guaranteed；
2, in subgrade settlement measurement, using remote, non-contacting measurement, guarantee at the same time datum mark stability and
The cost told somebody what one's real intentions are；
3, using lens imaging principle, photodetector can be made to measure the subgrade settlement value bigger than itself range ability；
4, it installs additional before lens by filter plate, prevents extraneous veiling glare from impacting to testing result；
5, multiple subgrade settlement detection units being arranged can effectively prevent detection device to make because of self stability to testing result
At influence.
Detailed description of the invention
Fig. 1 is the device index path that subgrade settlement is remotely detected based on laser；
Fig. 2 is a kind of composition schematic diagram of subgrade settlement detection device based on laser；
Fig. 3 is the attachment structure schematic diagram of subgrade settlement detection unit and signal processing unit；
Fig. 4 is laser emitting cellular construction schematic diagram；
Fig. 5 is observation pilework schematic diagram；
Fig. 6 is signal processor circuit structural scheme of mechanism；
1- settles stake, 101- vertical column, 102- bottom plate, 2- observation stake, 201- vertical column, 202- bottom plate, 3- laser emitting
Unit, 301- light source, 302- spectroscope, 303- mounting box, 4- subgrade settlement detection unit, 401- filter plate, 402- imaging are saturating
Mirror, 403- photoelectrical position sensor, 404- signal processor, 405- measuring signal transmission circuit, 406- mounting box, 407- branch
Frame, 5- signal processing unit, 6- power supply unit, 7- cavity.
Specific embodiment
As shown in connection with fig. 2, a kind of subgrade settlement detection device based on laser of the present embodiment, including sedimentation stake 1, observation
Stake 2, laser emitting unit 3, subgrade settlement detection unit 4, signal processing unit 5 and power supply unit 6, subgrade settlement detection are single
It being attached between member 4 and signal processing unit 5 by wired or wireless way, the quantity of power supply unit 6 is set as two, and one
A be mounted in sedimentation stake 1 provides regulated power supply for laser emitting unit 3, another is mounted in observation stake 2 as subgrade settlement
Detection unit 4 provides regulated power supply；Wherein, laser emitting unit 3 is to realize the basis settled inside long-range roadbed, which goes out
It penetrates unit 3 to be fixedly mounted in sedimentation stake 1, sedimentation stake 1 is embedded at electricity to be measured, and laser emitting unit 3 includes laser, light splitting
Three mirror, mounting box parts.
In conjunction with shown in Fig. 2 and 4, the light source 301 of the present embodiment is directly provided by solid state laser, laser and spectroscope
302 are fixedly mounted in mounting box 303, and laser emitting light is parallel to the horizontal plane, the angle between spectroscope 302 and horizontal plane
It is 45 °, the light of laser emitting is divided into horizontal and vertical two optical paths by spectroscope 302, and solid state laser and power supply unit 6 connect
It connects；Or light source 301 is directly provided by semiconductor laser, laser and spectroscope 302 are fixedly mounted in mounting box 303,
Laser emitting light is parallel to the horizontal plane, and the angle between spectroscope 302 and horizontal plane is 45 °, and spectroscope is by laser emitting
Light be divided into horizontal and vertical two optical path, semiconductor laser is connect with power supply unit 6 or light source has optical fiber laser direct
It provides, laser and spectroscope 302 are fixedly mounted in mounting box 303, and laser emitting light is parallel to the horizontal plane, spectroscope
Angle between 302 and horizontal plane is 45 °, and the light of laser emitting is divided into horizontal and vertical two optical path, optical fiber by spectroscope 302
Laser is connect with power supply unit 6.
The subgrade settlement detection unit 4 of the present embodiment is mounted in observation stake 2 corresponding with sedimentation stake 1, and observation stake 2 is arranged
Except subgrade settlement deformed area, sedimentation or its settling amount negligible point compared with measured point does not occur.
As shown in figure 3, subgrade settlement detection unit 4 by filter plate 401, imaging len 402, photoelectric position detector 403,
Signal processor 404, measuring signal transmission circuit 405 and mounting box 406 are constituted, wherein filter plate 401, imaging len 402,
Photoelectrical position sensor 403 is fixedly mounted in mounting box 406 by three brackets 407, and filter plate 401 can be filtered out in addition to wave
All light waves except a length of optical maser wavelength, and filtered light is irradiated on imaging len 402, imaging len 402
Optical axis is vertical with the photosurface of photoelectric position detector 403, and photoelectric position detector 403 selects linear array charge coupled device or face battle array
Any one in charge coupled device or four-quadrant photo detector or position sensitive detector, signal processor 404 and measurement
Signal circuit 405 is directly anchored in mounting box 406, and mounting box 406 seals, photoelectric position detector 403, signal processing
Device 404, the connection of 405 sequential signal of measuring signal transmission circuit, the light that laser emitting unit 3 issues pass through in mounting box 406
Transparent window is imaged on photoelectric position detector 403 via imaging len 402, signal processor 404 by filter circuit, put
Four big circuit, position signal processing circuit, data transformation interface circuit functional module compositions, as shown in figure 5, this four functions
Sequence of modules connection, photoelectric position detector 403 are connect with signal with filter circuit input port signal,
As shown in Fig. 2, sedimentation stake 1 and observation stake 2 are made of pedestal and vertical column, the bottom end of vertical column is vertically fixed on bottom
On seat, wherein sedimentation stake 1 is embedded in ground, the top of sedimentation stake 1 is above the ground level, and the plate face area of bottom plate 102 is usually slightly larger than vertical
Twice of 101 cross-sectional area of right cylinder, depending on the case where roadbed, if roadbed is softer, bottom plate plate face area is bigger, on the contrary
It is smaller, guarantee sedimentation stake 1 change in location synchronous with embedded place's subgrade settlement generation, on the vertical column 201 of observation stake 2 and hangs down
A plurality of cavities 7 are directly offered at equal intervals in column axis direction, as shown in figure 5, subgrade settlement detection unit 4 is fixedly mounted on
In cavity 7, in the present embodiment, do not known in order to which single subgrade settlement detection device is effectively reduced caused by testing result
Property, the quantity of the subgrade settlement detection unit 4 is set as 5-10, and the quantity of corresponding spectroscope 302 and subgrade settlement are examined
The quantity for surveying unit 4 is consistent, when installation sedimentation stake 1 is with stake 2 is observed, guarantees that each spectroscope 302 is emitted fixed horizontal light beam and shines
It is mapped in corresponding subgrade settlement detection unit 4 at the center of imaging len 402.
The signal processor of the present embodiment is computer based data processing system.
In order to better understand the utility model, in conjunction with shown in Fig. 1-6, following describe is sunk using the roadbed based on laser
Detection device is dropped, realizes that laser remotely detects the method settled inside roadbed, includes the following steps：
S1, each spectroscopical horizon light eye point is successively measured in laser emitting unit using laser range finder to road
Base settles the distance S at the imaging len center of detection unit；
S2, when roadbed settles, sedimentation detection stake settle therewith, be mounted in vertical column laser emitting unit hair
The displacement h of raw same distance, the laser beam through spectroscope outgoing are generated on photoelectric position detector by imaging len
As corresponding displacement h' also occurs therewith, this is shifted through signal processor and obtains；
S3, according to step S1 the object S measured and known imaging len focal length f, then pass through lens imaging formula, obtain image distance；
Image point displacement the amount h', step S3 that S4, the object distance s measured according to step S1, step S2 are measured calculate resulting
Image distance s' can pass through the relationship between three and point light source displacement, point light source displacement is calculated, to obtain one
Subgrade settlement h measured by a subgrade settlement detection unit；
Maximum value and minimum value in S5, removal multiple groups subgrade settlement h solve the mean value of remaining subgrade settlement, and
Using calculate resulting settling amount mean value as tested point the moment subgrade settlement h.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
Technical solution obtained, all falls in the protection scope of the utility model.
Claims (6)
1. a kind of subgrade settlement detection device based on laser, including sedimentation stake, observation stake, laser emitting unit, subgrade settlement
Detection unit, signal processing unit and power supply unit pass through between the subgrade settlement detection unit and signal processing unit
Wired or wireless way is attached, and the power supply unit provides required regulated power supply for each unit, it is characterised in that；
The laser emitting unit is mounted in sedimentation stake, and the sedimentation stake is embedded at electricity to be measured, the subgrade settlement detection
Unit be mounted on in the corresponding observation stake of sedimentation stake, except observation stake subgrade settlement deformed area, do not occur to settle or its
Settling amount negligible point compared with measured point；
The laser emitting unit includes that laser, spectroscope, mounting box, the laser and divergent lens are fixedly mounted on peace
In mounted box, the subgrade settlement detection unit includes filter plate, imaging len, photoelectric position detector, signal processor, measurement
Signal circuit and mounting box, the filter plate, imaging len, photoelectrical position sensor are fixedly mounted on peace by three brackets
In mounted box, filter plate can filter out all light waves in addition to wavelength is optical maser wavelength, and filtered light is irradiated to
On imaging len, the optical axis of the imaging len and the photosurface of photoelectric position detector are vertical.
2. a kind of subgrade settlement detection device based on laser according to claim 1, which is characterized in that the laser
It optionally include solid state laser, semiconductor laser, optical fiber laser.
3. a kind of subgrade settlement detection device based on laser according to claim 1, which is characterized in that the photopotential
Set detector time linear array charge coupled device or face battle array charge coupled device or four-quadrant photo detector or position sensitive detector
In any one.
4. a kind of subgrade settlement detection device based on laser according to claim 1, which is characterized in that the observation stake
It is made of pedestal and vertical column, the bottom end of the vertical column is vertically fixed on pedestal, perpendicular to cylinder axis on the vertical column
Line direction offers a plurality of cavities at equal intervals, and the subgrade settlement detection power supply is fixedly mounted in the cavity.
5. a kind of subgrade settlement detection device based on laser according to claim 1, which is characterized in that the laser
Emergent light is parallel to the horizontal plane, and the angle between spectroscope and horizontal plane is 45 °, and the light of laser emitting is divided into water by spectroscope
Gentle vertical two optical paths.
6. a kind of subgrade settlement detection device based on laser according to claim 1, which is characterized in that the roadbed is heavy
The quantity of drop detection device is set as 5-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820068216.5U CN208109075U (en) | 2018-01-16 | 2018-01-16 | A kind of subgrade settlement detection device based on laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820068216.5U CN208109075U (en) | 2018-01-16 | 2018-01-16 | A kind of subgrade settlement detection device based on laser |
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| Publication Number | Publication Date |
|---|---|
| CN208109075U true CN208109075U (en) | 2018-11-16 |
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ID=64128357
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820068216.5U Expired - Fee Related CN208109075U (en) | 2018-01-16 | 2018-01-16 | A kind of subgrade settlement detection device based on laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670459A (en) * | 2019-10-28 | 2020-01-10 | 中交路桥建设有限公司 | Measuring device for differential settlement |
| CN111220121A (en) * | 2019-11-20 | 2020-06-02 | 南京航空航天大学 | Railway roadbed settlement multipoint monitoring device and method based on LED imaging |
| CN113280788A (en) * | 2021-06-01 | 2021-08-20 | 中国科学院西北生态环境资源研究院 | Roadbed settlement monitoring device and system |
| CN115031684A (en) * | 2022-04-25 | 2022-09-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
-
2018
- 2018-01-16 CN CN201820068216.5U patent/CN208109075U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670459A (en) * | 2019-10-28 | 2020-01-10 | 中交路桥建设有限公司 | Measuring device for differential settlement |
| CN111220121A (en) * | 2019-11-20 | 2020-06-02 | 南京航空航天大学 | Railway roadbed settlement multipoint monitoring device and method based on LED imaging |
| CN113280788A (en) * | 2021-06-01 | 2021-08-20 | 中国科学院西北生态环境资源研究院 | Roadbed settlement monitoring device and system |
| CN113280788B (en) * | 2021-06-01 | 2022-10-11 | 中国科学院西北生态环境资源研究院 | Roadbed settlement monitoring device and system |
| CN115031684A (en) * | 2022-04-25 | 2022-09-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
| CN115031684B (en) * | 2022-04-25 | 2024-04-09 | 浙江图维科技股份有限公司 | Tunnel settlement alarm system and method based on lens group |
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