CN1651855A - 2-D, large range laser deflection / displacement measuring method and apparatus - Google Patents
2-D, large range laser deflection / displacement measuring method and apparatus Download PDFInfo
- Publication number
- CN1651855A CN1651855A CN 200510020375 CN200510020375A CN1651855A CN 1651855 A CN1651855 A CN 1651855A CN 200510020375 CN200510020375 CN 200510020375 CN 200510020375 A CN200510020375 A CN 200510020375A CN 1651855 A CN1651855 A CN 1651855A
- Authority
- CN
- China
- Prior art keywords
- laser
- displacement
- screen
- hot spot
- video camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims description 33
- 230000003044 adaptive effect Effects 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 7
- 238000002910 structure generation Methods 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 abstract description 7
- 238000003384 imaging method Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 230000004304 visual acuity Effects 0.000 description 6
- 239000005338 frosted glass Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000008376 long-term health Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention relates to a two-dimension large-range laser displacement/deflection measuring equipment and its measuring method. Said equipment includes laser transmitting portion and two-dimension laser speckle receiving and measuring portion. The laser transmitting portion is formed-form laser and mounting frame, and said laser mounting frame is a variable damping hinge structure, and the two-dimension laser speckle receiving and measuring portion consists of receiving screen, camera and luminous or non-luminous mark. Said invention also provides the concrete steps of its measurement method.
Description
Technical field
The invention belongs to the crossing domain in photoelectric measurement field and civilian infrastructure status monitoring field, be specifically related to a kind of two-dimentional large range laser displacement/deflection measurement mechanism and method.
Technical background
Vertical and the lateral deformation of the beam of building structure such as bridge under deadweight, load action is called amount of deflection; And the lateral deformation that bridge tower produces under effects such as drag-line and wind load is called displacement, generally represents with the displacement of the relative column foot of cat head, is referred to as displacement below.The construction quality of the direct reflect structure of displacement energy, load-bearing capacity, health condition, thereby in each link such as the design of bridge, quality control on construction, final acceptance of construction, residual life evaluation, strict regulation is arranged.So in building structure construction processes such as bridge, final acceptance of construction, military service phase, deformation parameters such as amount of deflection, displacement are monitored, for grasping its construction quality, understanding its health status, realization accident early warning, significant.Traditional bridge displacement measurement all is when the bridge final acceptance of construction or after having perceived tangible dangerous situation basically, just carries out disposable manual measurement with instrument.In recent years along with the development of bridge long-term health monitoring technology, developed faster based on the bridge displacement measurement technology of measuring for a long time, automatically of photoelectric measurement method.The photoelectric measurement method is a kind of non-contact measurement method, it mainly contain based on image-forming principle with based on two big classes of light ray principle.
A kind of the most typical photoelectric measurement method of image-forming principle that is based on shown in Figure 1.It is fixed on a luminous target 1 on bridge floor or the measured point, bridge tower top 2, ground measuring basis stationkeeping photoelectricity camera system 3 outside bridge pier or bridge, and the imaging len 3-1 by video camera is imaged on x on its detector 3-2 with luminous target
1The point.When 2 produce displacement d, luminous target will move to position 2 ' with the displacement d of bridge floor, and correspondingly its image space on detector also moves to x
2, photograph two width of cloth images that target changes front and back with video camera, can be according to the variable quantity x that dwindles into target position on picture multiplying power A and two width of cloth images of optical lens
1-x
2, calculate displacement d=A (x with computing machine
1-x
2).
The another kind of mensuration that is based on the light ray principle shown in Figure 2.It is fixed on a laser instrument 4 on the measured point 2, ground survey reference position, installation photoelectricity position sensitive detector (PSD) or photodetector array 5 outside bridge pier or bridge, and the light beam that laser instrument sends is the x on detector 5 directly
1Point forms hot spot.When bridge floor because carrying produces change in displacement d when moving to 2 ', laser instrument will be with the change in displacement d of bridge floor same moved further, correspondingly its hot spot on photodetector array is also from x
1Move to x
2, this location variation x
1-x
2Obviously be exactly the displacement d of bridge floor.
For first kind imaging measurement principle, because imaging len dwindles into picture with actual displacement d, need know and know that accurately object distance just can obtain the accurate relation of displacement d and picture (this is very difficult in actual engineering construction), and the resolving power and the precision of the distance measurement that obtains far away more are low more; And its measurement range and resolving power contradiction each other, make troubles to use.Video camera is a measuring basis in the measurement, and its installation requirement is very high, and the camera position that any factor is brought moves the accuracy that all can influence measurement.Lens all can be subjected to the pollution of dust etc. in addition, thereby influence imaging, measurement effect, even instrument was lost efficacy, thereby are difficult to adapt to the rugged surroundings of long-term field work.
For the second class light ray measuring principle, removed imaging len, eliminated the problem that causes by lens, can adopt special linear array detector to realize that measurement range reaches 20～30 centimetres one dimension displacement measurement simultaneously; But still there are the following problems in actual use:
1. for large bridge, especially cable-stayed bridge and suspension bridge displacement are very big, will reach the order of magnitude about 1 meter usually, and 20～30 centimetres range is far from being enough;
2. the displacement of bridge two dimension normally, in the long term monitoring process, being radiated at the hot spot that detector array lists can move to outside the detector because of the displacement of other direction, loses efficacy thereby make to measure.
If 3 measured points 2 exist displacement and two kinds of distortion of minor rotation, then the emission angle of laser will change, and this variation will be rotated amplification, be reflected in detector array and list and will a large amount of mobile of facula position occur, have a strong impact on the accuracy of measurement result.
These problems make above-mentioned two kinds of measuring methods have defective, seriously restrict its application in real-time, round-the-clock, the automatic deflection monitoring of bridge.
Summary of the invention
Purpose of the present invention is just for fear of the deficiency of above-mentioned prior art, while is in conjunction with the advantage of above-mentioned two kinds of technology, and a kind of two-dimentional large range laser displacement/deflection measurement mechanism and the method for design, realize wide range, two-dimensional measurement, has constant resolving power, not rotated by tested mechanism influences, and environmental adaptability is strong.
The objective of the invention is to adopt following proposal to realize:
Two dimension large range laser displacement/deflection measurement mechanism be to constitute by Laser emission part and two-dimensional laser hot spot reception measure portion.The Laser emission part is made up of laser instrument and laser instrument mounting bracket, the laser instrument mounting bracket is an adaptive damping hinge arrangement, this adaptive damping hinge is actually a ball-type hinge that is surrounded by adaptive damping liquid, the top of hinge is installed in by on the geodesic structure, the bottom fork is installed laser instrument, and the laser beam transmit direction is vertical with fork.Be embodied on the measuring method, when not giving the hinge increase control signal, the damping of hinge is very little, because of action of gravity, the hinge fork all the time vertically downward, the light beam that laser instrument sends is not subjected to the influence of structure minor rotation, the maintenance level; And the displacement of structure can break-evenly be delivered on the laser instrument.Accuracy for fear of hinge swing influence measurement, add control signal to hinge in the time of work, it is big that the viscosity of adaptive damping liquid becomes gradually, it is big that the damping of hinge also becomes gradually, the swing of hinge fork is retrained gradually like this, finally be parked in position straight down, laser beam also can level be mapped on the hot spot reception measurement mechanism, and the direction of light beam and the rotation of structure are irrelevant.
The two-dimensional laser hot spot receives the teletron of the similar general television set of measure portion profile.Its front end is that a large-scale laser facula receives screen, and the big I of screen is according to measuring the range customization.Four jiaos of screen four luminous or luminescent markings not are installed, several marks have definite mutual alignment relation.A video camera is installed in the back of screen, and video camera lists the detector array of above-mentioned screen imaging in its face battle array.Like this, laser radiation forms hot spot to screen, the position of hot spot is gathered and is measured by video camera, during by geodesic structure generation two-dimension displacement, corresponding the changing in position of laser facula, can calculate two dimensional displacement quantity by the image change of analyzing video camera.Screen and video camera protect with a protecting sheathing, form an integral body.
Advantage of the present invention is as follows:
1, these apparatus and method receive hot spot with screen and with video camera to the hot spot imaging, calculate spot displacement by Flame Image Process, this method has been eliminated the shortcoming that resolving power in original imaging measurement method changes with distance, and can realize that the wide range two-dimension displacement measures by the selection of different big the small screen.
2, because device has adopted the adaptive damping hinge arrangement, guaranteed that laser beam is in horizontal direction forever, avoided the swing of laser instrument when measuring simultaneously, thoroughly eliminated by of the influence of the minor rotation of geodesic structure, made the position of laser beam, hot spot only relevant with the displacement of structure to deflection metrology.
3, in the work, video camera is not the benchmark of measuring, but with luminous or not luminescent marking as the benchmark of measuring; Only need the relative displacement of Laser Measurement hot spot and mark, do not need of the relative displacement of Laser Measurement hot spot video camera, can avoid like this because the camera position creep (drift) that causes of a variety of causes to the influence of measurement accuracy.
4, between screen and the video camera apart from relative fixed, measurement mechanism has a fixing measurement resolution like this, can not influence the resolving power of instrument because of the distance of laser instrument installation site.
5, because adopt screen to receive hot spot, and use the video camera photographed screen, the size of screen can require to select according to range, has avoided adopting large-scale array photoelectric receiving device simultaneously, therefore can realize large range measuring; What video camera was taken is two dimensional image, can carry out two-dimensional localization to laser facula and measure; The measurement resolution of system requires also can select for use the next of digital camera of different pixel numbers to satisfy, and like this, this two-dimensional laser hot spot receives the two-dimension displacement measurement that measuring method can realize wide range, high resolution.
6, screen the rough surface effect be laser to be carried out half diffuse reflection and half transmitting form hot spot, dust can not influence this function; Simultaneous camera is in the seal protection shell, can avoid the influence of dust and steam, and measurement mechanism has good environmental adaptability, can use in the open air.
Therefore, the comprehensively existing two kinds of photoelectric displacement measuring methods of the present invention advantage, compensate its defect advantages such as having wide range, two-dimensional measurement, constant resolving power, not rotated by tested mechanism to influence, environmental adaptability is strong.
Description of drawings
Fig. 1 photoelectronic imaging method synoptic diagram
Fig. 2 light ray method synoptic diagram
The structural drawing of Fig. 3 one embodiment of this invention
Adaptive damping hinge arrangement synoptic diagram in Fig. 4 A the present embodiment
The working state figure of slight rotation back laser instrument mounting bracket takes place in Fig. 4 B structure
Embodiment
The present invention is further elaborated below in conjunction with accompanying drawing:
Referring to Fig. 3, two-dimentional large range laser displacement/deflection measurement mechanism constitutes by being installed in by the Laser emission part 6 on the geodesic structure 2 and receiving measure portion 7 according to the two-dimensional laser hot spot that actual conditions are installed at a distance of certain distance.
Referring to Fig. 4 A, Laser emission part 6 is made up of laser instrument 6-5 and laser instrument mounting bracket, and the laser instrument mounting bracket is an adaptive damping hinge arrangement.Adaptive damping hinge arrangement top comprises mount pad 6-1 and spherical housing 6-2 of a hollow, adaptive damping liquid 6-8 (adopting magnetic rheological liquid herein) and a pair of magnetic pole 6-3 that is made up of permeability magnetic material and coil are equipped with in the inside of spherical housing, the control line 6-9 of magnetic pole 6-3 draws through mount pad 6-1, spill for fear of magnetic rheological liquid, ad hoc have an O-ring seal 6-4; Adaptive damping hinge lower part comprises a spherical joint 6-7, a fork 6-6.The top of hinge is installed in by on the geodesic structure 2, and bottom fork 6-6 goes up laser instrument 6-5 is installed, and the laser beam transmit direction is vertical with fork.When not giving the hinge increase control signal, the damping of hinge is very little, and laser instrument 6-5 can freely swing.During structure generation minor rotation, as change to position 2 ' (seeing Fig. 4 B), because the cause of hinge, rotation is not delivered on the laser instrument 6-5, but the displacement of structure can break-evenly be delivered on the laser instrument 6-5.
Referring to Fig. 3, the two-dimensional laser hot spot receives measure portion 7 and is made up of frosted glass screen 7-1, video camera 7-4, light emitting diode 7-2, protecting sheathing 7-3 etc.Frosted glass screen 7-1 is positioned at front end, with the laser beam transmit direction over against, have coarse translucent surface, receive laser facula.Frosted glass screen 7-1 goes up and installs by four light emitting diode 7-2 that serve as a mark, and forms measuring basis.Video camera 7-4 adopts digital, is installed in after the screen 7-1, and is placed in the protecting sheathing 7-3 that is tightly connected with screen, to avoid the influence of dust and steam.
During work, control line 6-9 by the controllable damping hinge adds the control electric signal to hinge, it is big that the viscosity of magnetic rheological liquid becomes gradually, it is big that the damping of hinge also becomes gradually, the swing of laser instrument 6-5 is retrained gradually like this, finally be parked in position straight down, laser beam also can level be mapped on the hot spot reception measure portion 7, and the direction of light beam and the rotation of structure are irrelevant.At this moment, the position of structure has directly been reflected in the position of laser beam, light beam directly projects on the frosted glass screen 7-1, forms hot spot, hot spot and the light emitting diode 7-2 process process camera lens 7-4-1 imaging on the detector array 7-4-2 of video camera that serves as a mark.Computing machine 8 is handled the picture of light emitting diode 7-2 earlier, and then calculates the centre of gravity place of laser facula picture and the relative distance of light emitting diode picture, obtains the coordinate of present hot spot; This coordinate is deducted initial value, promptly can obtain the shift value of present hot spot, and then draw by the two-dimension displacement of geodesic structure.
Although the present invention is primarily aimed at the two-dimension displacement of the beam of bridge and bridge tower and measures and design, yet application of the present invention is not limited to the displacement measurement of bridge, can promote the use of high building, other heavy construction structures such as high tower one, during two-dimension displacement measures.In addition, although adopt the adaptive damping liquid of magnetic flow liquid in the embodiment of the present invention as the controllable damping hinge, adopt the frosted glass screen to receive hot spot, adopt light emitting diode to indicate as measuring basis, adopt digital camera as video camera, still can utilize the adaptive damping liquid of other adaptive damping liquid making controllable damping hinges such as electrorheological fluid, adopt the rough surface of other materials to make screen, adopt other luminous or non-luminous marks to indicate as benchmark, the analog video camera or the digital camera acquired signal that adopt, thus realize the present invention and do not deviate from defined essence of the present invention and scope in claims.
Claims (3)
1, two dimension, large range laser displacement/deflection measurement mechanism is characterized in that: it receives measure portion by Laser emission part and two-dimensional laser hot spot and constitutes;
The Laser emission part is made up of laser instrument and laser instrument mounting bracket, and the laser instrument mounting bracket is an adaptive damping hinge arrangement, and the top of hinge is installed in by on the geodesic structure, on the fork of bottom laser instrument is installed, and the laser beam transmit direction is vertical with fork;
The two-dimensional laser hot spot receive measure portion by laser facula receive screen, video camera, luminous or not luminescent marking form; Laser facula receives screen and is positioned at front end; with the laser beam transmit direction over against, have coarse translucent surface, luminous or not luminescent marking be installed on four jiaos of square screen; video camera is installed in after the screen, and is placed in the protecting sheathing that screen is tightly connected.
2, two-dimentional large range laser displacement/deflection measurement mechanism according to claim 1, it is characterized in that: the adaptive damping hinge arrangement of laser instrument mounting bracket is a spherical linkage structure of being surrounded by adaptive damping liquid, and control electrode or magnetic pole are installed on the hinge casing.
3, utilize the described device of claim 1 to carry out the method that two-dimentional large range laser displacement/deflection is measured, may further comprise the steps:
(1) add control signal for earlier the adaptive damping hinge arrangement of laser instrument mounting bracket, make the viscosity of adaptive damping liquid become big gradually, it is big that the damping of hinge becomes thereupon, make fork finally be parked in straight down position, the laser beam level that laser instrument sends is mapped to hot spot and receives screen, forms hot spot in screen surface;
(2) position of hot spot is gathered and is measured by video camera, when by geodesic structure generation two-dimension displacement, the position of laser facula is corresponding to change, with luminous or not luminescent marking as the benchmark of measuring, the relative displacement of Laser Measurement hot spot and mark can calculate by the two dimensional displacement quantity of geodesic structure by the image change of analyzing video camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100203755A CN1297798C (en) | 2005-02-06 | 2005-02-06 | 2-D, large range laser deflection / displacement measuring method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100203755A CN1297798C (en) | 2005-02-06 | 2005-02-06 | 2-D, large range laser deflection / displacement measuring method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1651855A true CN1651855A (en) | 2005-08-10 |
| CN1297798C CN1297798C (en) | 2007-01-31 |
Family
ID=34875780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100203755A Expired - Fee Related CN1297798C (en) | 2005-02-06 | 2005-02-06 | 2-D, large range laser deflection / displacement measuring method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1297798C (en) |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390498C (en) * | 2005-12-28 | 2008-05-28 | 张奔牛 | Apparatus and method for detecting and monitoring displacement/deflection |
| CN100395515C (en) * | 2006-08-31 | 2008-06-18 | 蓝章礼 | Tension line video deflection measuring device and method |
| CN100447546C (en) * | 2006-08-31 | 2008-12-31 | 重庆交通大学 | Telescope all-weather self-calibrating deflection/displacement measuring device and method |
| CN101403612A (en) * | 2007-10-04 | 2009-04-08 | 通用电气公司 | Method and system for measuring deformation in turbine blades |
| CN102099654A (en) * | 2009-04-07 | 2011-06-15 | 通力股份公司 | Means and method for measuring an elevator hoistway |
| CN102661727A (en) * | 2012-05-14 | 2012-09-12 | 北京林业大学 | Flatness detection method based on information fusion technology |
| CN102778196A (en) * | 2011-05-10 | 2012-11-14 | 长春理工大学 | Image size measuring method based on laser calibration |
| CN102937422A (en) * | 2012-10-30 | 2013-02-20 | 中广核太阳能开发有限公司 | Surface type detection equipment and method of solar light collecting mirror surface |
| CN103234457A (en) * | 2013-04-23 | 2013-08-07 | 西安电子科技大学 | Digital imaging-based multi-beam displacement measurement method |
| CN103604377A (en) * | 2013-11-22 | 2014-02-26 | 中联重科股份有限公司 | Device, system and method for measuring displacement of point to be measured and engineering machinery |
| CN103837084A (en) * | 2014-02-18 | 2014-06-04 | 浙江华东工程安全技术有限公司 | Three-direction displacement measurement method based on laser speckle imaging technology |
| CN103940357A (en) * | 2014-03-26 | 2014-07-23 | 北京卓越经纬测控技术有限公司 | Non-contact spatial displacement measurement device |
| CN104111031A (en) * | 2014-07-22 | 2014-10-22 | 中国电建集团北京勘测设计研究院有限公司 | Surface deformation optical measurement sighting target protecting device and monitoring system and method |
| CN105091773A (en) * | 2015-05-29 | 2015-11-25 | 安徽合力股份有限公司 | Detection apparatus for forklift mast flexibility measurement |
| CN105258640A (en) * | 2015-08-06 | 2016-01-20 | 大理大学 | Multifunctional object measuring instrument and using method thereof |
| CN105571504A (en) * | 2015-12-16 | 2016-05-11 | 天津市天门进保科技有限公司 | Bridge flexibility symmetrical photoelectric automatic measurement apparatus |
| CN106123797A (en) * | 2016-08-29 | 2016-11-16 | 北京交通大学 | Bridge floor deflection metrology system based on image procossing and method |
| CN106705857A (en) * | 2016-11-10 | 2017-05-24 | 中国人民解放军理工大学 | Automatic monitoring system of laser surface displacement |
| CN106996745A (en) * | 2017-04-28 | 2017-08-01 | 国网河南省电力公司电力科学研究院 | A kind of laser monitoring system of the fault displacement of breaker body |
| CN107314734A (en) * | 2017-07-06 | 2017-11-03 | 南昌工程学院 | Underground engineering wall rock displacement real-time observation device |
| CN107631693A (en) * | 2017-09-14 | 2018-01-26 | 重庆大学 | A kind of two-dimentional multiple spot laser displacement measurement system |
| CN110006358A (en) * | 2019-04-17 | 2019-07-12 | 孙雨 | A kind of measuring device of vertical deformation |
| CN111465344A (en) * | 2017-08-06 | 2020-07-28 | 比奥普-医疗有限公司 | Optical probe for cervical examination |
| CN111854623A (en) * | 2020-07-29 | 2020-10-30 | 南京工程学院 | Rapid detection method and detection system for micro deformation of object |
| CN112815863A (en) * | 2021-01-07 | 2021-05-18 | 中煤航测遥感集团有限公司 | Deformation monitoring system, deformation monitoring method, deformation calculation device and storage medium |
| CN114088005A (en) * | 2021-11-19 | 2022-02-25 | 中新国际联合研究院 | Device and method for measuring structural deflection |
| US20220098915A1 (en) * | 2020-09-30 | 2022-03-31 | Honda Motor Co., Ltd. | Moving body |
| CN114459427A (en) * | 2022-02-10 | 2022-05-10 | 中新国际联合研究院 | Automatic leveling high-precision measuring instrument and measuring method |
| CN115096279A (en) * | 2022-06-28 | 2022-09-23 | 湖南科技大学 | Solar concentrator azimuth axis inclination monitoring system based on plumb and optical imaging |
| CN115218809A (en) * | 2022-07-22 | 2022-10-21 | 中国船舶科学研究中心 | Creep detection device for observation window of manned deep submersible vehicle and use method thereof |
| CN115876095A (en) * | 2023-03-02 | 2023-03-31 | 金钱猫科技股份有限公司 | Bridge displacement monitoring method, system, equipment and storage medium |
| CN118067012A (en) * | 2024-02-20 | 2024-05-24 | 西安元智系统技术有限责任公司 | Cultural relic crack monitoring system based on image processing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683918B (en) * | 2020-12-01 | 2022-02-11 | 北京理工大学 | Method and device for detecting inner surface defects of differential confocal fixed-surface interference target pellet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2302499Y (en) * | 1997-05-05 | 1998-12-30 | 南京理工大学 | Portable laser pavement deflection detecting instrument |
| FR2844874B1 (en) * | 2002-09-23 | 2004-12-10 | Bidim Geosynthetics Sa | METHOD FOR LOCATING AND MEASURING DEFORMATIONS OF A CIVIL ENGINEERING WORK |
| US7403294B2 (en) * | 2003-03-07 | 2008-07-22 | Boxboro Systems, Llc | Optical measurement device and method |
| CN1235013C (en) * | 2003-11-28 | 2006-01-04 | 大连理工大学 | Vacuum laser dam deformation measuring method |
-
2005
- 2005-02-06 CN CNB2005100203755A patent/CN1297798C/en not_active Expired - Fee Related
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390498C (en) * | 2005-12-28 | 2008-05-28 | 张奔牛 | Apparatus and method for detecting and monitoring displacement/deflection |
| CN100395515C (en) * | 2006-08-31 | 2008-06-18 | 蓝章礼 | Tension line video deflection measuring device and method |
| CN100447546C (en) * | 2006-08-31 | 2008-12-31 | 重庆交通大学 | Telescope all-weather self-calibrating deflection/displacement measuring device and method |
| CN101403612B (en) * | 2007-10-04 | 2013-10-23 | 通用电气公司 | Method and system for measuring deformation in turbine blades |
| CN101403612A (en) * | 2007-10-04 | 2009-04-08 | 通用电气公司 | Method and system for measuring deformation in turbine blades |
| CN102099654A (en) * | 2009-04-07 | 2011-06-15 | 通力股份公司 | Means and method for measuring an elevator hoistway |
| CN102099654B (en) * | 2009-04-07 | 2014-06-18 | 通力股份公司 | Means and method for measuring an elevator hoistway |
| CN102778196A (en) * | 2011-05-10 | 2012-11-14 | 长春理工大学 | Image size measuring method based on laser calibration |
| CN102661727A (en) * | 2012-05-14 | 2012-09-12 | 北京林业大学 | Flatness detection method based on information fusion technology |
| CN102661727B (en) * | 2012-05-14 | 2014-10-29 | 北京林业大学 | Flatness detection method based on information fusion technology |
| CN102937422A (en) * | 2012-10-30 | 2013-02-20 | 中广核太阳能开发有限公司 | Surface type detection equipment and method of solar light collecting mirror surface |
| CN103234457A (en) * | 2013-04-23 | 2013-08-07 | 西安电子科技大学 | Digital imaging-based multi-beam displacement measurement method |
| CN103234457B (en) * | 2013-04-23 | 2015-10-28 | 西安电子科技大学 | Based on the multi-beam displacement measurement method of digital imagery |
| CN103604377A (en) * | 2013-11-22 | 2014-02-26 | 中联重科股份有限公司 | Device, system and method for measuring displacement of point to be measured and engineering machinery |
| CN103837084B (en) * | 2014-02-18 | 2017-01-04 | 浙江华东工程安全技术有限公司 | Three direction displacement method for measurement based on laser facula imaging technique |
| CN103837084A (en) * | 2014-02-18 | 2014-06-04 | 浙江华东工程安全技术有限公司 | Three-direction displacement measurement method based on laser speckle imaging technology |
| CN103940357A (en) * | 2014-03-26 | 2014-07-23 | 北京卓越经纬测控技术有限公司 | Non-contact spatial displacement measurement device |
| CN104111031A (en) * | 2014-07-22 | 2014-10-22 | 中国电建集团北京勘测设计研究院有限公司 | Surface deformation optical measurement sighting target protecting device and monitoring system and method |
| CN104111031B (en) * | 2014-07-22 | 2016-07-06 | 中国电建集团北京勘测设计研究院有限公司 | Protection of goal device and monitoring system and method are sighted in areal deformation optical measurement |
| CN105091773A (en) * | 2015-05-29 | 2015-11-25 | 安徽合力股份有限公司 | Detection apparatus for forklift mast flexibility measurement |
| CN105091773B (en) * | 2015-05-29 | 2018-02-09 | 安徽合力股份有限公司 | Detection means for forklift door frame deflection metrology |
| CN105258640A (en) * | 2015-08-06 | 2016-01-20 | 大理大学 | Multifunctional object measuring instrument and using method thereof |
| CN105571504A (en) * | 2015-12-16 | 2016-05-11 | 天津市天门进保科技有限公司 | Bridge flexibility symmetrical photoelectric automatic measurement apparatus |
| CN105571504B (en) * | 2015-12-16 | 2018-12-21 | 广东交科检测有限公司 | A kind of bridge deflection symmetric photoelectric automatic measurer |
| CN106123797A (en) * | 2016-08-29 | 2016-11-16 | 北京交通大学 | Bridge floor deflection metrology system based on image procossing and method |
| CN106705857A (en) * | 2016-11-10 | 2017-05-24 | 中国人民解放军理工大学 | Automatic monitoring system of laser surface displacement |
| CN106996745A (en) * | 2017-04-28 | 2017-08-01 | 国网河南省电力公司电力科学研究院 | A kind of laser monitoring system of the fault displacement of breaker body |
| CN107314734A (en) * | 2017-07-06 | 2017-11-03 | 南昌工程学院 | Underground engineering wall rock displacement real-time observation device |
| CN107314734B (en) * | 2017-07-06 | 2019-09-10 | 南昌工程学院 | Underground engineering wall rock displacement real-time observation device |
| CN111465344A (en) * | 2017-08-06 | 2020-07-28 | 比奥普-医疗有限公司 | Optical probe for cervical examination |
| CN107631693A (en) * | 2017-09-14 | 2018-01-26 | 重庆大学 | A kind of two-dimentional multiple spot laser displacement measurement system |
| CN107631693B (en) * | 2017-09-14 | 2020-02-07 | 重庆大学 | Two-dimensional multipoint laser displacement measurement system |
| CN110006358A (en) * | 2019-04-17 | 2019-07-12 | 孙雨 | A kind of measuring device of vertical deformation |
| CN111854623A (en) * | 2020-07-29 | 2020-10-30 | 南京工程学院 | Rapid detection method and detection system for micro deformation of object |
| US20220098915A1 (en) * | 2020-09-30 | 2022-03-31 | Honda Motor Co., Ltd. | Moving body |
| CN114312259A (en) * | 2020-09-30 | 2022-04-12 | 本田技研工业株式会社 | Moving body |
| CN114312259B (en) * | 2020-09-30 | 2024-06-18 | 本田技研工业株式会社 | Moving body |
| CN112815863A (en) * | 2021-01-07 | 2021-05-18 | 中煤航测遥感集团有限公司 | Deformation monitoring system, deformation monitoring method, deformation calculation device and storage medium |
| CN114088005A (en) * | 2021-11-19 | 2022-02-25 | 中新国际联合研究院 | Device and method for measuring structural deflection |
| CN114459427A (en) * | 2022-02-10 | 2022-05-10 | 中新国际联合研究院 | Automatic leveling high-precision measuring instrument and measuring method |
| CN115096279A (en) * | 2022-06-28 | 2022-09-23 | 湖南科技大学 | Solar concentrator azimuth axis inclination monitoring system based on plumb and optical imaging |
| CN115218809A (en) * | 2022-07-22 | 2022-10-21 | 中国船舶科学研究中心 | Creep detection device for observation window of manned deep submersible vehicle and use method thereof |
| CN115876095A (en) * | 2023-03-02 | 2023-03-31 | 金钱猫科技股份有限公司 | Bridge displacement monitoring method, system, equipment and storage medium |
| CN118067012A (en) * | 2024-02-20 | 2024-05-24 | 西安元智系统技术有限责任公司 | Cultural relic crack monitoring system based on image processing |
| CN118067012B (en) * | 2024-02-20 | 2024-08-06 | 西安元智系统技术有限责任公司 | Cultural relic crack monitoring system based on image processing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1297798C (en) | 2007-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1297798C (en) | 2-D, large range laser deflection / displacement measuring method and apparatus | |
| CN101339003B (en) | Great structure horizontal two-dimensional displacement automatic measuring equipment and method | |
| CN110044289B (en) | Automatic zooming-based tunnel multi-section convergence deformation video monitoring device and method | |
| CN106091946B (en) | Self-calibration measuring device and method for bridge deformation or displacement parameter | |
| CN205482917U (en) | Subside based on linear array CCD and warp measuring transducer | |
| CN102015220B (en) | Bridge inspection robot capable of climbing obstacle | |
| CN100414250C (en) | Method and device for measuring multiple spot dynamic flexibility/displacement by self caliberating self coding imaging method | |
| CN108106801A (en) | Bridge tunnel disease non-contact detection system and detection method | |
| CN102589523A (en) | Method and equipments for remotely monitoring displacement of building | |
| CN1789905A (en) | Apparatus and method for detecting and monitoring displacement/deflection | |
| CN210946763U (en) | Slope deformation monitoring system | |
| CN111457848B (en) | Method and system for measuring displacement through coordinate change between adjacent monitoring points | |
| CN106225682A (en) | For large structure body vertical displacement and the measurement apparatus of ground settlement and method | |
| WO2022126339A1 (en) | Method for monitoring deformation of civil structure, and related device | |
| CN100395515C (en) | Tension line video deflection measuring device and method | |
| CN106197287A (en) | Self-calibration measurement apparatus and method for large scale structure composition deformation or displacement parameter | |
| CN106197292A (en) | A kind of building displacement monitoring method | |
| Chan et al. | Vertical displacement measurements for bridges using optical fiber sensors and CCD cameras—a preliminary study | |
| CN201740635U (en) | Multi-spot deflection measurement device based on line laser | |
| CN109738061B (en) | Illuminometer position automatic alignment method and system for illuminometer calibration | |
| CN217930281U (en) | Two-dimensional displacement detection device | |
| KR20060117918A (en) | Noncontact three-dimensional measuring method and device | |
| CN110186383A (en) | Monocular camera deflection metrology method based on the variation of the target point elevation angle | |
| CN110207605B (en) | Device and method for measuring metal structure deformation based on machine vision | |
| CN100447546C (en) | Telescope all-weather self-calibrating deflection/displacement measuring device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHONGQING YAPAI BRIDGE ENGINEERING QUALITY TESTING Free format text: FORMER OWNER: CHONGQING UNIVERSITY ASSETS MANAGEMENT CO., LTD. Effective date: 20110401 Owner name: CHONGQING UNIVERSITY ASSETS MANAGEMENT CO., LTD. Free format text: FORMER OWNER: CHONGQING UNIVERSITY Effective date: 20110401 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400044 NO. 174, SHAPINGBA CENTRE STREET, SHAPINGBA DISTRICT, CHONGQING CITY TO: 400030 NO. 83, SHAPINGBA NORTH STREET, SHAPINGBA DISTRICT, CHONGQING CITY Free format text: CORRECT: ADDRESS; FROM: 400030 NO. 83, SHAPINGBA NORTH STREET, SHAPINGBA DISTRICT, CHONGQING CITY TO: 401121 MERCURY A3-6F, MIDDLE SECTION, HUANGSHAN AVENUE, BEIBU NEW DISTRICT, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110401 Address after: 401121 mercury A3-6F, middle of Mount Huangshan Avenue, North New District, Chongqing Patentee after: CHONGQING YA PAI BRIDGE ENGINEERING QUALITY TESTING Co.,Ltd. Address before: 400030 No. 83, Shapingba North Street, Shapingba District, Chongqing Patentee before: Chongqing University Asset Management Co.,Ltd. Effective date of registration: 20110401 Address after: 400030 No. 83, Shapingba North Street, Shapingba District, Chongqing Patentee after: Chongqing University Asset Management Co.,Ltd. Address before: 400044 Shapingba street, Shapingba District, Chongqing, No. 174 Patentee before: Chongqing University |
|
| DD01 | Delivery of document by public notice |
Addressee: Feng Qiaochun Document name: payment instructions |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Feng Qiaochun Document name: Notice of termination of patent right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20210206 |