CN207923118U - A kind of high precision measuring device of long-range measurement displacement - Google Patents
A kind of high precision measuring device of long-range measurement displacement Download PDFInfo
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- CN207923118U CN207923118U CN201820480114.4U CN201820480114U CN207923118U CN 207923118 U CN207923118 U CN 207923118U CN 201820480114 U CN201820480114 U CN 201820480114U CN 207923118 U CN207923118 U CN 207923118U
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- measurement target
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- displacement
- building structure
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Abstract
The utility model belongs to field of measuring technique, is related to a kind of high precision measuring device of long-range measurement displacement.Target measurement target is mounted in building structure, target measurement target is one with foraminate lens group；The laser beam of laser light source is by the aperture and lens group of target measurement target and line focus camera lens projects on projection screen a long way off；When building structure is subjected to displacement, identical displacement also occurs for the target measurement target installed in building structure, then direction when laser beam passes through aperture deflects, then deflection distance when projecting projection screen is amplified；At projection screen be equipped with CCD illuminant modules, convert optical signals into electric signal, record the changes in coordinates amount of hot spot, further according to laser light source reach target measurement target distance and target measurement target to the distance of projection screen, obtain the actual displacement of building structure.The utility model can carry out remote long-term flash ranging, can reach the precision of 0.01mm~0.1mm.
Description
Technical field
The utility model belongs to field of measuring technique, is related to the measuring technique of displacement or deformation, more particularly to a kind of remote
Journey measures the high precision measuring device of displacement.
Background technology
In civil engineering structure, it is often necessary to the displacement or deformation of monitoring of structures.Common monitoring instrument has：Whole station
Instrument, high-precision level, GPS system, resistance-type displacement meter, laser displacement gauge, dial gauge, amesdial etc..Wherein total powerstation, height
The instruments such as precision spirit level, GPS system can be measured at a distance, but the precision that can reach is typically only 5mm
Left and right, although high-precision level theoretically can accurate 0.2mm can be because of operator if carrying out long term monitoring
The each accidental error for setting up measuring instrument of member can not ensure the precision of long term monitoring more than 0.2mm.Resistance-type displacement meter swashs
The measurement accuracy of the instrument and meters such as light displacement meter, dial gauge, amesdial is very high, can reach 0.001~0.01mm, but these
Equipment can only do close-in measurement relative displacement or deformation, such as foundation settlement occurs for certain bridge or building structure, then near
Foundation soil can all sink therewith, and it is that cannot accurately react the practical settling amount on basis only to measure relative displacement.
Utility model content
The utility model proposes the long-range high-precision measuring method for measuring displacement, fixed point progress a long way off can be realized
Long-term observation, and the measurement accuracy of traditional remote meter device can be reached more than.
The technical solution of the utility model：
A kind of high precision measuring device of long-range measurement displacement, including laser light source 1, target measurement target 2, amasthenic lens 3
With projection screen 4；Target measurement target 2 is fixed in building structure 5, for one with foraminate lens group；Laser light source 1 is located at
The side of target measurement target 2, amasthenic lens 3 and projection screen 4 are located at the other side of target measurement target 2；Laser light source 1, target are surveyed
The central axis of amount target 2 and amasthenic lens 3 is at same horizontal line.
CCD illuminant modules are equipped at the projection screen 4.
A kind of high-precision measuring method of long-range measurement displacement, steps are as follows：
Target measurement target 2 is mounted in building structure 5, target measurement target 2 is one with foraminate lens group；Laser
Light source 1 is located at the side of target measurement target 2, and amasthenic lens 3 and projection screen 4 are located at the other side of target measurement target 2；Laser light source
1 laser beam is by the aperture and lens group of target measurement target 2 and line focus camera lens 3 projects on projection screen 4 a long way off；When building
When building structure 5 is subjected to displacement, identical displacement also occurs for the target measurement target 2 installed in building structure 5, then laser beam passes through small
Direction when hole deflects, then deflection distance when projecting projection screen 4 is amplified；The photosensitive moulds of CCD are equipped at projection screen 4
Block converts optical signals into electric signal, records the changes in coordinates amount of hot spot, and target measurement target 2 is reached further according to laser light source 1
Distance and target measurement target 2 arrive the distance of projection screen 4, obtain 5 actual displacement of building structure.
The effect and benefit of the utility model be：
1) can remotely be measured, when building structure settles, near ground also have it is a degree of
Sedimentation, therefore attached subaerial fixed point can not be found, and fixed point can be located at building structure sedimentation shadow by the utility model
It rings the place other than area and carries out remote observation.
2) it is measured after can amplifying the micro-displacement of building structure due to the utility model, improves measurement
Precision, can be as accurate as 0.01mm~0.1mm.
3) laser light source, target measurement target, projection screen can be fixed for a long time, to eliminate manually installed instrument and equipment production
Raw error.
Description of the drawings
A kind of schematic diagrames of the high-precision measuring method of long-range measurement displacement of Fig. 1.
In figure：1 laser light source；2 target measurement targets；3 amasthenic lens；4 projection screens；5 building structure.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with technical solution and attached drawing.
Certain continuous bridge across footpath is 40m+40m+40m+40m+40m, wide 25m.Build ground at 15m near bridge pier at this
Iron needs the influence for accurately monitoring subway work to bridge pier using cut and cover tunneling.
The method specifically measured is：Laser light source 1, amasthenic lens 3, projection screen 4 are set other than the subway work zone of influence,
Target measurement target 2 is mounted on the bridge pier for needing the possibility observed to settle, and the distance of bridge pier to projection screen 4 is more than 4 times
5 times or more of distance may be used if necessary to higher precision to the distance of laser light source 1 for bridge pier.When bridge pier settles
When, direction when laser beam passes through aperture will deflect, then deflection distance when projecting projection screen will be amplified.Projection screen
The CCD illuminant modules at place convert optical signals into electric signal, record the changes in coordinates amount of hot spot, are reached further according to laser light source 1
The distance and bridge pier target measurement target 2 of bridge pier target measurement target 2 arrive the distance relation of projection screen 4, and it is actual to calculate bridge pier
Displacement.
Claims (2)
1. a kind of high precision measuring device of long-range measurement displacement, which is characterized in that the high precision measuring device includes swashing
Radiant (1), target measurement target (2), amasthenic lens (3) and projection screen (4)；Target measurement target (2) is fixed on building structure (5)
On, for one with foraminate lens group；Laser light source (1) is located at the side of target measurement target (2), amasthenic lens (3) and
Projection screen (4) is located at the other side of target measurement target (2)；In laser light source (1), target measurement target (2) and amasthenic lens (3)
Mandrel is at same horizontal line.
2. according to high precision measuring device according to claim 1, which is characterized in that be equipped at the projection screen (4)
CCD illuminant modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480114.4U CN207923118U (en) | 2018-04-02 | 2018-04-02 | A kind of high precision measuring device of long-range measurement displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480114.4U CN207923118U (en) | 2018-04-02 | 2018-04-02 | A kind of high precision measuring device of long-range measurement displacement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207923118U true CN207923118U (en) | 2018-09-28 |
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ID=63597049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480114.4U Active CN207923118U (en) | 2018-04-02 | 2018-04-02 | A kind of high precision measuring device of long-range measurement displacement |
Country Status (1)
| Country | Link |
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| CN (1) | CN207923118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507530A (en) * | 2018-04-02 | 2018-09-07 | 大连理工大学 | A kind of high precision measuring device and method of long-range measurement displacement |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
-
2018
- 2018-04-02 CN CN201820480114.4U patent/CN207923118U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507530A (en) * | 2018-04-02 | 2018-09-07 | 大连理工大学 | A kind of high precision measuring device and method of long-range measurement displacement |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
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