CN105841621A - Method for remotely measuring horizontal displacement of roadbed - Google Patents
Method for remotely measuring horizontal displacement of roadbed Download PDFInfo
- Publication number
- CN105841621A CN105841621A CN201610172867.4A CN201610172867A CN105841621A CN 105841621 A CN105841621 A CN 105841621A CN 201610172867 A CN201610172867 A CN 201610172867A CN 105841621 A CN105841621 A CN 105841621A
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- CN
- China
- Prior art keywords
- roadbed
- reflecting mirror
- measured
- laser
- distance
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The invention discloses a method for remotely measuring horizontal displacement of a roadbed. The method comprises the steps of selecting two fixed reference positions A and C; arranging a first reflector at a first height D above the to-be-measured roadbed, wherein the first reflector is perpendicular with ground; arranging a second reflector at a reference position C, wherein the included angle between the second reflector and a horizontal surface is theta2; before horizontal displacement of the to-be-measured roadbed occurs, transmitting a first laser beam by a laser range finder at a position A, wherein the included angle between the first laser beam and the ground is theta1, measuring a first distance of the first laser beam from reflection by the first reflector and the second reflector to returning by the laser range finder; after horizontal displacement of the to-be-measured roadbed occurs, transmitting a second laser beam by the laser range finder at the position A, wherein the included angle between the second laser beam and the ground is theta1, measuring a second distance of the second laser beam from reflection by the first reflector and the second reflector and returning by the laser range finder; and computing the horizontal displacement of the to-be-measured roadbed according to the first distance, the second distance and theta1.
Description
Technical field
The invention belongs to laser measuring technique field, relate to one and utilize laser remotely to measure roadbed level
The apparatus and method of displacement.
Background technology
Roadbed displacement is all difficult to avoid that in the work progress of road and after completion.In recent years
Along with the fast development of orbit construction, relevant safety problem increasingly obtains the attention of people.Especially
Being the appearance of present high-speed railway, the control to Roadbed Deformation has had higher requirement.In order to timely
Solve roadbed change in displacement trend under load action, in order to adopt an effective measure in advance, Accident prevention
Generation, need in the work progress of road and completion after one period observation is set.Completion
Rear roadbed displacement observation to determine observation time length according to practical situation." railway bed sinks article
The real-time new method of measuring of displacement " in (Zhang Yanan, 2008) method of providing, use laser and target
Target, target surface is that θ is directly placed on roadbed to be measured with the angle of horizontal plane, this method
In, when roadbed to be measured is subjected to displacement or rocks, the angle on target surface and horizontal plane may be caused
Change, so that laser can not return along original light path, cause laser ranging to draw and treat
Find range from.Inventive process avoids this problem.
Summary of the invention
The invention provides a kind of new pattern laser measuring method and device, simple in construction, the most easily operate,
Only use reflecting mirror, it is not necessary to CCD, lens or other optical elements, can measure and obtain roadbed displacement.
A kind of method that the invention provides long-range measurement roadbed horizontal displacement, including:
Step 1: choose reference position A and C fixing at two, and place laser range finder at A；
Wherein, B is roadbed position to be measured；Reference position A and C is positioned on the horizontal plane of differing heights；
Step 2: above roadbed to be measured, at first height D the first reflecting mirror is set, described first anti-
Penetrate mirror perpendicular to the ground, and minute surface is towards reference position A；
Step 3: the second reflecting mirror, described second reflecting mirror and horizontal plane are set at the C of reference position
Angle be θ2, and 0 degree of ＜ θ2＜ 90 degree；
Step 4: before roadbed occurred level displacement to be measured, laser range finder outgoing at A a branch of with ground
Face angle is θ1The first laser beam, laser range finder measures described first laser beam through the first reflecting mirror
First distance of institute's warp after reflecting with the second reflecting mirror and return；Wherein, θ1=90 degree of-θ2；
Step 5: after roadbed occurred level displacement to be measured, the outgoing at A of described laser range finder is a branch of
With ground angle theta1The second laser beam, laser range finder measure described second laser beam through first reflection
Mirror and the second reflecting mirror reflect and return after institute through second distance；
Step 6: according to described first distance, second distance and θ1It is calculated roadbed to be measured to occur
Horizontal displacement.
The method that the present invention provides utilizes advanced laser measuring technique to realize, can be to the level of roadbed
Displacement is remotely measured.Laser measurement precision is high, except reflecting mirror in light path, it is not necessary to other
Optical element, can avoid producing multiple error.Measuring method is simple to operation, is applicable to reference bit
Put and target range to be measured situation farther out.This method has at a distance, in high precision, on a large scale, in fact
Time measure advantage.
Accompanying drawing explanation
Fig. 1 is the flow chart that medium-long range of the present invention measures subgrade drainage prosposition shifting method；
Fig. 2 is the geometric representation measuring roadbed horizontal displacement in the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with concrete real
Execute example, and referring to the drawings, the present invention is described in further detail.
Laser is utilized remotely to measure subgrade drainage prosposition shifting method as it is shown in figure 1, the present invention proposes one,
Comprising:
Step 1: choose reference position A and C fixing at two, and place laser range finder at A；
Wherein, B is roadbed position to be measured, measures the roadbed horizontal direction position of target position to be measured
Move, i.e. measure the displacement of B horizontal direction；A and B is positioned on same level or different level,
Such as can the most on the ground, C is positioned on another horizontal plane being highly different from A.
Step 2: above B, at the first height D, the first reflecting mirror, described first reflecting mirror are set
Perpendicular to the ground, and minute surface is towards reference position A；
Step 3: the second reflecting mirror, described second reflecting mirror and horizontal plane are set at the C of reference position
Angle be θ2, and 0 degree of ＜ θ2＜ 90 degree；Step 4: laser range finder outgoing at A a branch of with ground
Face angle is θ1The first laser beam, laser range finder measures described first laser beam through the first reflecting mirror
After reflecting with the second reflecting mirror and return, institute is through the first distance；Wherein, θ1=90 degree of-θ2；
Step 5: the outgoing at A of described laser range finder is a branch of with ground angle theta1The second laser beam,
Laser range finder is measured described second laser beam and is reflected through the first reflecting mirror and the second reflecting mirror and return
Rear institute is through second distance；
Step 6: according to described first distance, second distance and θ1It is calculated roadbed to be measured to occur
Horizontal displacement.
Wherein it is desired to ensure that the laser launched at A can arrive C after reflecting mirror D reflects, for
Reaching this purpose, A, C, D place elevation of water needs to meet following under normal circumstances
Condition:
The height ＞ A place level of the height ＞ D place horizontal plane of C place horizontal plane and height.
Said method can realize especially by example below:
The scale that at B, fixed placement one is erect, installs at the first height D of leaf sight range ground
Having the first reflecting mirror, reflecting mirror is with scale on the same line.By A outgoing beam of laser (laser
Bundle and ground angle theta1, 0 degree of ＜ θ1＜ 90 degree and θ1=90 degree of-θ2), at the D of reflecting mirror, reflection is shone
Penetrate on the second reflecting mirror being fixed at C, and reflect, again pass by D, be back to A
Place, laser ranging readout value.The distance now read is the distance of AD+DC.Wherein, second
Angle between reflecting mirror and horizontal plane is θ, and minute surface is towards the first reflecting mirror；
At B during occurred level displacement, the occurred level displacement the most therewith of the first reflecting mirror, now, by
At A, outgoing and ground angle are θ1Beam of laser, be radiated at solid through the D ' place of the first reflecting mirror
The second reflecting mirror (this reflecting mirror and horizontal plane angle θ at C2, 0 degree of ＜ θ2＜ 90 degree and θ2=90
Degree-θ1On), and reflect, again pass by D ', be back at A, laser ranging readout value.
The distance now read is the distance of AD '+D ' C.
So can show that at B, the height of roadbed horizontal displacement is cos θ2×((AD+DC)-
(AD’+D’C))。
Particular embodiments described above, is carried out the purpose of the present invention, technical scheme and beneficial effect
Further describe it should be understood that the foregoing is only the specific embodiment of the present invention,
Be not limited to the present invention, all within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (4)
1. a method for long-range measurement roadbed horizontal displacement, including:
Step 1: choose reference position A and C fixing at two, and place laser range finder at A；
Wherein, B is roadbed position to be measured；Reference position A and C is positioned on the horizontal plane of differing heights；
Step 2: above roadbed to be measured, at first height D the first reflecting mirror is set, described first anti-
Penetrate mirror perpendicular to the ground, and minute surface is towards reference position A；
Step 3: the second reflecting mirror, described second reflecting mirror and horizontal plane are set at the C of reference position
Angle be θ2, and 0 degree of ＜ θ2＜ 90 degree；
Step 4: before roadbed occurred level displacement to be measured, laser range finder outgoing at A a branch of with ground
Face angle is θ1The first laser beam, laser range finder measures described first laser beam through the first reflecting mirror
First distance of institute's warp after reflecting with the second reflecting mirror and return；Wherein, θ1=90 degree of-θ2；
Step 5: after roadbed occurred level displacement to be measured, the outgoing at A of described laser range finder is a branch of
With ground angle theta1The second laser beam, laser range finder measure described second laser beam through first reflection
Mirror and the second reflecting mirror reflect and return after institute through second distance；
Step 6: according to described first distance, second distance and θ1It is calculated roadbed to be measured to occur
Horizontal displacement.
The most the method for claim 1, wherein the height ＞ D place water of C place horizontal plane
The height of the height ＞ A place horizontal plane of plane.
The most the method for claim 1, wherein in step 2, solid above roadbed to be measured
Surely place the scale of a setting, and placement is described first anti-at the first height of described leaf sight range ground
Penetrate mirror, described scale and the first reflecting mirror and be positioned at same straight line.
The most the method for claim 1, wherein step 6 is calculated institute by following formula
State the horizontal displacement distance of roadbed to be measured: cos θ2× ((AD+DC)-(AD '+D ' C)), wherein,
D ' is that the second bundle laser exposes to the position on the first reflecting mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172867.4A CN105841621B (en) | 2016-03-24 | 2016-03-24 | A kind of method of long-range measurement roadbed horizontal displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172867.4A CN105841621B (en) | 2016-03-24 | 2016-03-24 | A kind of method of long-range measurement roadbed horizontal displacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105841621A true CN105841621A (en) | 2016-08-10 |
| CN105841621B CN105841621B (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610172867.4A Active CN105841621B (en) | 2016-03-24 | 2016-03-24 | A kind of method of long-range measurement roadbed horizontal displacement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621258A (en) * | 2017-11-14 | 2018-01-23 | 璧甸福 | A kind of subsidence monitoring of foundation method based on differential principle |
| CN109941309A (en) * | 2019-04-08 | 2019-06-28 | 华东交通大学 | A kind of pair of bridge-type shield generates the laser type detection method of transverse translation |
| CN111830525A (en) * | 2020-07-28 | 2020-10-27 | 广东博智林机器人有限公司 | Laser triangle ranging system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349537Y (en) * | 1998-12-29 | 1999-11-17 | 西安交通大学 | Laser on line pachometer |
| CN102538693A (en) * | 2012-02-14 | 2012-07-04 | 北京林业大学 | Vertical wood diameter detection method based on laser and vision technology |
| CN104075661A (en) * | 2014-04-03 | 2014-10-01 | 国网湖北省电力公司咸宁供电公司 | Method for monitoring overhead tube bus displacement |
| CN104613892A (en) * | 2014-12-31 | 2015-05-13 | 中国铁路总公司 | Video detection technology and laser ranging technology integrated compound snow depth monitoring system |
-
2016
- 2016-03-24 CN CN201610172867.4A patent/CN105841621B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349537Y (en) * | 1998-12-29 | 1999-11-17 | 西安交通大学 | Laser on line pachometer |
| CN102538693A (en) * | 2012-02-14 | 2012-07-04 | 北京林业大学 | Vertical wood diameter detection method based on laser and vision technology |
| CN104075661A (en) * | 2014-04-03 | 2014-10-01 | 国网湖北省电力公司咸宁供电公司 | Method for monitoring overhead tube bus displacement |
| CN104613892A (en) * | 2014-12-31 | 2015-05-13 | 中国铁路总公司 | Video detection technology and laser ranging technology integrated compound snow depth monitoring system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621258A (en) * | 2017-11-14 | 2018-01-23 | 璧甸福 | A kind of subsidence monitoring of foundation method based on differential principle |
| CN107621258B (en) * | 2017-11-14 | 2020-11-06 | 赵鸣 | Foundation settlement monitoring method based on difference principle |
| CN109941309A (en) * | 2019-04-08 | 2019-06-28 | 华东交通大学 | A kind of pair of bridge-type shield generates the laser type detection method of transverse translation |
| CN111830525A (en) * | 2020-07-28 | 2020-10-27 | 广东博智林机器人有限公司 | Laser triangle ranging system |
| CN111830525B (en) * | 2020-07-28 | 2023-04-07 | 广东博智林机器人有限公司 | Laser triangle ranging system |
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| Publication number | Publication date |
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| CN105841621B (en) | 2018-05-04 |
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