CN109186470A - A kind of mounting distance can automatic adjusument laser displacement sensor - Google Patents
A kind of mounting distance can automatic adjusument laser displacement sensor Download PDFInfo
- Publication number
- CN109186470A CN109186470A CN201811328017.4A CN201811328017A CN109186470A CN 109186470 A CN109186470 A CN 109186470A CN 201811328017 A CN201811328017 A CN 201811328017A CN 109186470 A CN109186470 A CN 109186470A
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- prism
- laser displacement
- displacement
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- laser
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 abstract description 27
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention patent relates to a kind of acquisition of laser displacement data and light path regulating device, especially a kind of laser displacement sensors.By laser displacement gauge, light path regulating device-reflection microscope group is constituted.Which solves use laser displacement timing in test site, it is necessary to which displacement meter is placed on the problem of could effectively acquiring displacement apart from textured surface particular range.The device is easy to operate, does not influence the measuring accuracy of laser displacement gauge, debugging and installment work before the test mitigated significantly, can be used for most of test site for needing to carry out displacement measurement.
Description
Technical field:
The invention patent relates to displacement sensor detection field more particularly to a kind of acquisition of laser displacement data and optical paths
Regulating device.
Background technique:
Sensor suitable for displacement measurement is very various, but the most accurate with the measurement of laser displacement gauge at present,
It is particularly suitable for high-frequency vibration and non-cpntact measurement.But laser displacement is different from other displacement meter features in respect of one, is exactly to swash
Optical sensor has one section of mounting distance, and when the distance of test surfaces range sensor is less than mounting distance, sensor is not measure
Change in displacement, we term it " invalid distances ", as shown in Figure 2.With the IL-100 model of Japanese Keyemce company production
For laser displacement gauge, its test scope is the change in displacement at 75mm~130mm of range sensor laser emission port,
That is sensor does not react if an object has displacement in 0~75mm of range sensor, the displacement of object is big
It is not also reacted in 130mm, validity test range 21 and invalid test scope 22 as shown in Figure 2.It can be seen that conventional laser
The invalid measuring distance of displacement meter carrys out inconvenience to calibration tape, specific as follows: (1) test space must guarantee that receiving can simultaneously
The deformation and invalid distance of energy.It, will be so that test be lived if laser displacement gauge distance test face is excessively close in a narrow space
It is dynamic to be normally carried out.(2) it installs and debugs cumbersome.Testing crew is necessarily required in advance according to test surfaces position, and
Possible deformation direction determines the installation site of laser displacement gauge, and final installation needs while meeting space and beam angle
Requirement, very test tester patience and carefulness.(3) laser head and deformation plance are opposite and right, if textured surface is sent out
Raw brittle break, the material of avalanche are likely to hurt the precision components such as fragile laser head.
Summary of the invention
Goal of the invention: the invention patent is designed to provide a kind of Returned optical path for overcoming disadvantages mentioned above and providing
The laser displacement gauge of transmission.The device overcomes has invalid measuring distance, installation effectiveness low using laser displacement gauge at present, easily
The disadvantages of damage, has very high practicability.
Technical solution: the task that existing above-mentioned target proposes, the present apparatus turn back and adjust dress by laser displacement gauge and multi-pass
Set composition.It is characterized in that, the laser beam of the laser displacement gauge transmitting is mapped to multi-pass system, by the reflection of light path system
Directive testee surface afterwards, optical path distance of turning back can be adjusted by regulating device, form different measuring distances
Meeting different test environment, minimum measuring distance can allow invalid measuring distance to be equal to multi-pass and turn back path distance,
I.e. laser beam, which leaves multi-pass device of turning back, can start the measurement being displaced.
Distinguishing feature:
1) the multi-pass system of turning back may be implemented to completely eliminate invalid measuring distance, in the survey for not influencing laser displacement gauge
In the case where trying range, measuring distance is further furthered, the displacement measurement under narrow installation space may be implemented.
2) multi-pass system of turning back can be eliminated with regulating device, can also retain one section of invalid distance, in this way can be
It is realized when installation and fixes present apparatus system, then in regulating device, cooperate the variation of invalid distance, so that test scope is fallen in
Test surfaces attachment, improves installation effectiveness, has saved the set-up time.
3) test surfaces are contacted with sensor laser beam emitting head by light path system, effectively protect the essence of sensor
Close components.
Detailed description of the invention
It is as shown in Figure 1 the structural schematic diagram of the invention patent device.
It is illustrated in figure 2 the test schematic diagram of common laser displacement sensor, the defect having is that there are longer nothings
Imitate distance 23.
It is illustrated in figure 3 test of the invention patent device before test effect schematic diagram-adjusting prism 1 and prism 2
Signal.
It is illustrated in figure 4 test of the invention patent device after test effect schematic diagram-adjusting prism 1 and prism 2
Signal.
In figure: prism 1, prism 2, prism 3, laser displacement gauge main body 4, laser emission port 5, testee 20, transmitting
Laser beam 23, the laser beam 6 of transmitting, the laser beam 24 of reflection, validity test range 21, invalid test scope 22.
Specific embodiment
As shown in figure 3, prism 1, prism 2, prism 3 are carried out by by 90 degree of the progress of common laser displacement meter of overturning
Optical path combination, can easily realize the displacement measurement in test scope 21.Its laser beam is projected by laser emission port 5,
Prism 2 is reflected by prism 1 and is re-reflected into prism 3, finally projects the surface of testee 20, is sequentially passed through after reflection
Prism 3, prism 2 are crossed, prism 1 receives simultaneously output displacement reacting dose by the receiving terminal of laser displacement gauge 4 again.
As shown in figure 4, when testee 20 is close apart from 4 all too of laser displacement gauge, adjustable prism 1 and prism 2,
So that prism 1 and prism 2 are elongated at a distance from prism 3, distance 22 invalid so is then further compressed, effective range 21
It is then furthered, reaches test purpose.Similarly, if testee 20 is too far apart from laser displacement gauge 4, can with inverse operation,
Realize the purpose for zooming out validity test range 21.
Claims (3)
1. a kind of laser displacement data acquisition and light path regulating device, it is characterised in that: including laser displacement gauge 4, prism 1, rib
Mirror 2, prism 3.
2. prism 1 according to claim 1, prism 2, prism 3 constitute prism group, turning back for laser optical path may be implemented.
3. prism group according to claim 2, prism 1 and prism 2 can be realized the adjusting with 3 distance of prism, make it
It can be realized the optical path in certain length range to compress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811328017.4A CN109186470A (en) | 2018-11-06 | 2018-11-06 | A kind of mounting distance can automatic adjusument laser displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811328017.4A CN109186470A (en) | 2018-11-06 | 2018-11-06 | A kind of mounting distance can automatic adjusument laser displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109186470A true CN109186470A (en) | 2019-01-11 |
Family
ID=64938670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811328017.4A Pending CN109186470A (en) | 2018-11-06 | 2018-11-06 | A kind of mounting distance can automatic adjusument laser displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109186470A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545761A (en) * | 2009-05-06 | 2009-09-30 | 湖北工业大学 | Optical measuring system with multiple degrees of freedom |
| CN101718529A (en) * | 2009-11-30 | 2010-06-02 | 重庆大学 | Multi-beam deformation detecting device and use method thereof |
| CN105043263A (en) * | 2015-05-06 | 2015-11-11 | 北京交通大学 | Displacement detection system and displacement detection method for railway equipment |
| CN105466352A (en) * | 2015-11-23 | 2016-04-06 | 浙江大学舟山海洋研究中心 | Non-contact curved surface scanning system |
| CN105676229A (en) * | 2016-03-28 | 2016-06-15 | 西安理工大学 | Laser range finder structure applied to low range |
| CN106247946A (en) * | 2016-07-13 | 2016-12-21 | 合肥工业大学 | A kind of four-degree-of-freedom laser measurement system |
| JP2017053772A (en) * | 2015-09-10 | 2017-03-16 | 公益財団法人鉄道総合技術研究所 | Displacement measuring device |
| CN209673043U (en) * | 2018-11-06 | 2019-11-22 | 南京林业大学 | A kind of mounting distance can automatic adjusument laser displacement sensor |
-
2018
- 2018-11-06 CN CN201811328017.4A patent/CN109186470A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545761A (en) * | 2009-05-06 | 2009-09-30 | 湖北工业大学 | Optical measuring system with multiple degrees of freedom |
| CN101718529A (en) * | 2009-11-30 | 2010-06-02 | 重庆大学 | Multi-beam deformation detecting device and use method thereof |
| CN105043263A (en) * | 2015-05-06 | 2015-11-11 | 北京交通大学 | Displacement detection system and displacement detection method for railway equipment |
| JP2017053772A (en) * | 2015-09-10 | 2017-03-16 | 公益財団法人鉄道総合技術研究所 | Displacement measuring device |
| CN105466352A (en) * | 2015-11-23 | 2016-04-06 | 浙江大学舟山海洋研究中心 | Non-contact curved surface scanning system |
| CN105676229A (en) * | 2016-03-28 | 2016-06-15 | 西安理工大学 | Laser range finder structure applied to low range |
| CN106247946A (en) * | 2016-07-13 | 2016-12-21 | 合肥工业大学 | A kind of four-degree-of-freedom laser measurement system |
| CN209673043U (en) * | 2018-11-06 | 2019-11-22 | 南京林业大学 | A kind of mounting distance can automatic adjusument laser displacement sensor |
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