CN110146054A - A kind of device and method of long-range accurate measurement tunnel surface horizontal displacement - Google Patents
A kind of device and method of long-range accurate measurement tunnel surface horizontal displacement Download PDFInfo
- Publication number
- CN110146054A CN110146054A CN201910455401.9A CN201910455401A CN110146054A CN 110146054 A CN110146054 A CN 110146054A CN 201910455401 A CN201910455401 A CN 201910455401A CN 110146054 A CN110146054 A CN 110146054A
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- Prior art keywords
- reflecting mirror
- condenser lens
- horizontal
- tunnel surface
- receiving screen
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of device and methods of long-range accurate measurement tunnel surface horizontal displacement, the device successively includes laser light source along optical path, first reflecting mirror, second reflecting mirror, condenser lens and charge-coupled device, wherein: the first reflecting mirror and the second reflecting mirror are 45 ° of reflecting mirrors, first reflecting mirror receives the horizontal light emitted by laser light source, and the horizontal light is changed to 90 ° along clockwise direction in the horizontal plane and reflexes to the second reflecting mirror, the horizontal light is changed 90 ° again along clockwise direction in the horizontal plane and reflexes to condenser lens by the second reflecting mirror, condenser lens is by the receiving screen of the horizontal light focusing to charge-coupled device, a hot spot is obtained on receiving screen, it realizes and is imaged on screen.A kind of device of long-range accurate measurement tunnel surface horizontal displacement provided by the invention is capable of the displacement of precise measurement tunnel horizontal direction, reduces measurement difficulty.
Description
Technical field
The invention belongs to optical precision measurement field more particularly to a kind of long-range accurate measurement tunnel surface horizontal displacements
Device and method.
Background technique
In recent years, the fast development of the infrastructure constructions cause such as high speed, high-speed rail, tunnel construction work in China's is entered
Fast development period, the following various tunnel accidents also occur again and again.The massif engineering geology of Tunnel Passing and the hydrology
The complicated conditions such as matter are changeable, and existing tunnel is limited by the technique of design and construction condition in the period of building, the tunnel built in early days
Often there is tunnel vault cracking, abutment wall cracking, vault cavity, lining cutting damage, Tunnel Water Leakage, freezing damage in tunnel, the big change of country rock
The health problem in the tunnels such as shape becomes to become increasingly conspicuous, and how to carry out Gernral Check-up and disease to active service operation tunnel or newly built tunnels
Just seem particularly important with disaster prevention and control.This just needs to carry out accurate measurement to tunnel surface, and observing its surface has not
It is subjected to displacement.
Laser light source is directly anchored in tunnel plane to be measured by usual way, and laser light source needs to keep temperature
Relative constant and offer power supply (or periodic replacement battery), this brings difficulty to construction.
Summary of the invention
(1) technical problems to be solved
In view of this, the purpose of the present invention is to provide a kind of device of long-range accurate measurement tunnel surface horizontal displacement and
Method solves the problems, such as that laser light source needs to be directly placed in tunnel plane to be measured and then brings difficulty to construction.
(2) technical solution
The present invention provides a kind of device of long-range accurate measurement tunnel surface horizontal displacement, which successively wraps along optical path
Include laser light source, the first reflecting mirror, the second reflecting mirror, condenser lens and charge-coupled device (CCD), in which:
First reflecting mirror and the second reflecting mirror are 45 ° of reflecting mirrors, and the first reflecting mirror receives the level emitted by laser light source
Light, and the horizontal light is changed 90 ° along clockwise direction in the horizontal plane and reflexes to the second reflecting mirror, the second reflecting mirror
The horizontal light is changed to 90 ° again along clockwise direction in the horizontal plane and reflexes to condenser lens, condenser lens is by the water
Zero diopter line focus obtains a hot spot on receiving screen, realizes and be imaged on screen to the receiving screen of CCD.
Wherein, it is flat to be respectively positioned on fixed reference for the receiving screen of the laser light source, the second reflecting mirror, condenser lens and CCD
On face；First reflecting mirror is fixed on tunnel surface to be measured；
Wherein, the condenser lens focal length is f；The distance between the condenser lens and the CCD receiving screen are s, and s
> f.
The present invention also provides the method for carrying out long-range accurate measurement tunnel surface horizontal displacement based on the device, packets
It includes:
After horizontal displacement d occurs for tunnel surface, the position of condenser lens is adjusted, a hot spot is obtained on CCD receiving screen；
It reads tunnel surface and the hot spot obtained on CCD receiving screen after horizontal displacement and tunnel surface generation horizontal position occurs
The displacement d ' between hot spot obtained on CCD receiving screen before moving；
According to the displacement d ' between hot spot, the horizontal displacement d of tunnel surface to be measured is calculated.
Wherein, in the horizontal displacement Step d that tunnel surface to be measured is calculated, the formula used is d=d ' (s-
F)/f, wherein f is condenser lens focal length；S is the distance between condenser lens and CCD receiving screen.
(3) beneficial effect
It can be seen from the above technical proposal that a kind of long-range accurate measurement tunnel surface horizontal displacement provided by the invention
Device and method solves laser light source and is directly placed at plane to be measured by installing a reflecting mirror in tunnel plane to be measured
Problem, optimization measurement, and the precision for ensuring to measure.
Detailed description of the invention
Fig. 1 is a kind of overall pattern of the device of long-range accurate measurement tunnel surface horizontal displacement proposed by the present invention；
Fig. 2 is in a kind of device of long-range accurate measurement tunnel surface horizontal displacement proposed by the present invention, and light is by poly-
The schematic diagram of focus lens and CCD receiving screen.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
The present invention provides a kind of device and methods of long-range accurate measurement tunnel surface horizontal displacement, as shown in Figure 1, should
Device successively includes laser light source, the first reflecting mirror, the second reflecting mirror, condenser lens and CCD along optical path, in which:
First reflecting mirror and the second reflecting mirror are 45 ° of reflecting mirrors, and the first reflecting mirror receives the level emitted by laser light source
Light, and the horizontal light is changed 90 ° along clockwise direction in the horizontal plane and reflexes to the second reflecting mirror, the second reflecting mirror
The horizontal light is changed to 90 ° again along clockwise direction in the horizontal plane and reflexes to condenser lens, condenser lens is by the water
Zero diopter line focus obtains a hot spot on receiving screen, realizes and be imaged on screen to the receiving screen of CCD.
Wherein, the receiving screen of laser light source, the second reflecting mirror, condenser lens and CCD are respectively positioned in fixed reference planes；
First reflecting mirror is fixed on tunnel surface to be measured；
Wherein, condenser lens focal length is f；The distance between condenser lens and CCD receiving screen are s, and s > f.
Based on the device of long-range accurate measurement tunnel surface horizontal displacement shown in FIG. 1, the present invention also provides a kind of remote
The method of journey accurate measurement tunnel surface horizontal displacement, in conjunction with Fig. 1, which includes:
After horizontal displacement d occurs for tunnel surface, the position of condenser lens is adjusted, a hot spot is obtained on the receiving screen of CCD；
It reads tunnel surface and the hot spot obtained on the receiving screen of CCD after horizontal displacement and tunnel surface generation level occurs
The displacement d ' between hot spot obtained on the receiving screen of CCD before displacement；
According to the displacement d ' between hot spot, the horizontal displacement d of tunnel surface to be measured is calculated.
Wherein, in the horizontal displacement Step d that tunnel surface to be measured is calculated, the formula used is d=d ' (s-
F)/f, wherein f is condenser lens focal length；S is the distance between condenser lens and the receiving screen of CCD.
Preferably, an embodiment according to the present invention, after horizontal displacement occurs for tunnel surface to be measured, the first reflecting mirror 1
It is moved to the first reflecting mirror 1 ' place, light is as shown in phantom in Figure 1 at this time.
When it is d that horizontal displacement distance, which occurs, for tunnel surface to be measured, horizontal displacement d occurs for the first reflecting mirror 1, such as Fig. 2 institute
Show, after condenser lens, on CCD receiving screen, due to the focussing force of condenser lens, solid line and dotted line are in CCD receiving screen
On hot spot distance be d '.
As shown in Fig. 2, according to similar triangles relationship: d/d '=(s-f)/f, wherein d ' is by CCD receiving screen glazing
The shift position of spot is directly read.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (6)
1. a kind of device of long-range accurate measurement tunnel surface horizontal displacement, which successively includes laser light source, along optical path
One reflecting mirror, the second reflecting mirror, condenser lens and charge-coupled device, in which:
First reflecting mirror and the second reflecting mirror are 45 ° of reflecting mirrors, and the first reflecting mirror receives the horizontal light emitted by laser light source,
And the horizontal light is changed to 90 ° along clockwise direction in the horizontal plane and reflexes to the second reflecting mirror, the second reflecting mirror should
Horizontal light changes 90 ° again along clockwise direction in the horizontal plane and reflexes to condenser lens, and condenser lens is by the horizon light
Line focus obtains a hot spot on receiving screen, realizes and be imaged on screen to the receiving screen of charge-coupled device.
2. the apparatus according to claim 1, which is characterized in that the laser light source, the second reflecting mirror, condenser lens and electricity
The receiving screen of lotus coupled apparatus is respectively positioned in fixed reference planes.
3. the apparatus according to claim 1, which is characterized in that first reflecting mirror is fixed on tunnel surface to be measured.
4. the apparatus according to claim 1, which is characterized in that the condenser lens focal length is f；The condenser lens and institute
The distance between receiving screen of charge-coupled device is stated as s, and s > f.
5. one kind carries out long-range accurate measurement tunnel surface horizontal displacement based on device described in any one of Claims 1-4
Method, comprising:
After horizontal displacement d occurs for tunnel surface, the position of condenser lens is adjusted, obtains one on the receiving screen of charge-coupled device
Hot spot；
It reads tunnel surface and the hot spot obtained on the receiving screen of charge-coupled device after horizontal displacement and tunnel surface hair occurs
The displacement d ' between hot spot obtained on the receiving screen of charge-coupled device before raw horizontal displacement；
According to the displacement d ' between hot spot, the horizontal displacement d of tunnel surface to be measured is calculated.
6. according to the method described in claim 5, it is characterized in that, in the horizontal displacement that tunnel surface to be measured is calculated
In Step d, the formula used is d=d ' (s-f)/f, wherein f is condenser lens focal length；S is condenser lens and charge-coupled device
The distance between receiving screen of part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455401.9A CN110146054A (en) | 2019-05-28 | 2019-05-28 | A kind of device and method of long-range accurate measurement tunnel surface horizontal displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910455401.9A CN110146054A (en) | 2019-05-28 | 2019-05-28 | A kind of device and method of long-range accurate measurement tunnel surface horizontal displacement |
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| CN110146054A true CN110146054A (en) | 2019-08-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124820A (en) * | 2021-06-17 | 2021-07-16 | 中国空气动力研究与发展中心低速空气动力研究所 | Monocular distance measurement method based on curved mirror |
| CN113124821A (en) * | 2021-06-17 | 2021-07-16 | 中国空气动力研究与发展中心低速空气动力研究所 | Structure measurement method based on curved mirror and plane mirror |
| CN114441369A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Device and method for quantitatively detecting acidity of material surface |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662984A (en) * | 2018-07-17 | 2018-10-16 | 北方民族大学 | A kind of precise displacement sensor and its measurement method based on corner cube mirror group |
-
2019
- 2019-05-28 CN CN201910455401.9A patent/CN110146054A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662984A (en) * | 2018-07-17 | 2018-10-16 | 北方民族大学 | A kind of precise displacement sensor and its measurement method based on corner cube mirror group |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114441369A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Device and method for quantitatively detecting acidity of material surface |
| CN113124820A (en) * | 2021-06-17 | 2021-07-16 | 中国空气动力研究与发展中心低速空气动力研究所 | Monocular distance measurement method based on curved mirror |
| CN113124821A (en) * | 2021-06-17 | 2021-07-16 | 中国空气动力研究与发展中心低速空气动力研究所 | Structure measurement method based on curved mirror and plane mirror |
| CN113124821B (en) * | 2021-06-17 | 2021-09-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Structure measurement method based on curved mirror and plane mirror |
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Application publication date: 20190820 |