CN206818149U - A kind of laser displacement measurement device - Google Patents
A kind of laser displacement measurement device Download PDFInfo
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- CN206818149U CN206818149U CN201720660418.4U CN201720660418U CN206818149U CN 206818149 U CN206818149 U CN 206818149U CN 201720660418 U CN201720660418 U CN 201720660418U CN 206818149 U CN206818149 U CN 206818149U
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Abstract
The utility model provides a kind of laser displacement measurement device, for measuring the displacement of object under test, including：Processor；Laser beam emitting device, it is connected with the processor, including generating laser and light diversing lens；The processor controls the laser transmitter projects laser, and by laser light scattering, laser is radiated on the object under test the smooth diversing lens into strips；Laser receiver, including laser pickoff and light receiver lens；The light receiver lens will be sent to the laser pickoff after laser pick-off that the object under test reflects；The laser pickoff sends laser to the processor, and the processor judges the distance of the object under test according to laser, and the displacement of the object under test is calculated according to the change of the object under test distance.Using non-contact measurement, the object under test of different surfaces can be measured, not influenceed by object under test surface gloss, have outstanding accurate rate and resolution ratio, while inclined surface can be measured.
Description
Technical field
Technical field of optical detection is the utility model is related to, more particularly to a kind of laser displacement measurement device.
Background technology
In traditional measurement, often using the method for range of triangle.The principle of range of triangle is mapped by height change
To sensor image displacement, height distance is calculated according to trigonometric function.It is final and logical including the method with white light fringe phase shift
Cross trigonometry and in-plane displancement is converted into height.Range of triangle carries out ranging using point reflection at present, but current point
The range of triangle of test has a disadvantage that：On translucent material, it projects and had verified that and can produce deviation, transparent material and
Minute surface material is difficult measurement；Meanwhile trigonometry can all have shadow effect, the step shield portions of mutation can not be measured；And
Laser only focus is most thin, and hot spot becomes big after leaving focus, deterioration in accuracy.
Utility model content
The technical problems to be solved in the utility model is to be directed to weak point of the prior art, there is provided a kind of laser position
Measuring system.Measured, the object under test of different surfaces can be measured, not by object under test using non-contact laser
Surface gloss influences, and has outstanding accurate rate and resolution ratio, while can measure inclined surface.
The utility model solves the technological means that technical problem uses and is to provide a kind of laser displacement measurement device, for surveying
The displacement of object under test is measured, including：Processor；Laser beam emitting device, it is connected with the processor, including generating laser and light
Diversing lens；The processor controls the laser transmitter projects laser, the smooth diversing lens by laser light scattering into strips
Laser is radiated on the object under test；Laser receiver, including laser pickoff and light receiver lens；The light connects
The laser pickoff will be sent to after laser pick-off that the object under test reflects by receiving lens；The laser pickoff is by laser
Sending to the processor, the processor judges the distance of the object under test according to laser, and according to the object under test
The change of distance calculates the displacement of the object under test.
In laser displacement measurement device provided by the utility model, the light receiver lens include multiple coaxial gather
Focus lens, multiple focusing pieces are sent to the laser pickoff after the laser that the object under test reflects is focused.
In laser displacement measurement device provided by the utility model, the processor includes speedy carding process unit, standard
Output unit and high-precision output unit；The range of the speedy carding process unit output laser is the standard output unit and institute
State the half of the range of high-precision output unit output laser；The precision of the high-precision output unit output laser is the height
Four times of the precision of fast output unit and standard output unit output laser.
In laser displacement measurement device provided by the utility model, the processor also includes display unit, described aobvious
Showing unit includes being in the latticed display screen with coordinate；The processor determines each surface of the object under test according to laser
Distance, and be shown on the display screen.
In laser displacement measurement device provided by the utility model, the laser pickoff is CCD.
In laser displacement measurement device provided by the utility model, the light receiver lens are Gauss lens.
In laser displacement measurement device provided by the utility model, the highest measurement speed of the laser displacement measurement device
Spend for 5000000, unit 3D-point/s.
The laser displacement measurement device implemented in the utility model has the advantages that：
Measured, the object under test of different surfaces can be measured, not by determinand body surface using non-contact laser
Face glossiness influences, and has outstanding accurate rate and resolution ratio, while can measure inclined surface.
Brief description of the drawings
Fig. 1 is shown as the structural representation of laser displacement measurement device in the utility model.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more related Listed Items.
As shown in figure 1, Fig. 1 is shown as the structural representation of laser displacement measurement device in the utility model.This practicality is new
Type provides a kind of laser displacement measurement device, for measuring the displacement of object under test 4, including：Processor 1；Laser beam emitting device
2, it is connected with the processor 1, including generating laser 21 and light diversing lens 22；The processor 1 controls the laser to send out
Emitter 21 launches laser, and by laser light scattering, laser is radiated on the object under test 4 the smooth diversing lens 22 into strips；Laser
Reception device 3, including laser pickoff 31 and light receiver lens 32；The light receiver lens 32 are by the object under test 4
The laser pickoff 31 is sent to after the laser pick-off of reflection；The laser pickoff 31 sends laser to the processor
1, the processor 1 judges the distance of the object under test 4 according to laser, and according to the change meter of the distance of object under test 4
Calculate the displacement of the object under test 4.In the present embodiment, laser beam emitting device 2 realizes the wire measurement of laser using light cross-section method.It is logical
Cross light cross-section method and the measurement accuracy changed on direction of displacement and the function of changing the sampling period are provided for displacement transducer first.And
And light cross-section method is used, installation is easy to, because the distance of measuring center keeps constant under any situation.Measurement can be ensured
Stability and accuracy.
In the utility model, it is irradiated using strip laser rather than using point-like laser, is connect by laser pickoff 31
By reflected light.Then according to profile of the range of triangle away from generation measurement object.X-axis can be measured simultaneously and while measures X-axis and Y
2 dimension data on axle, so without traverse measuring device or object to be measured during measurement.
In an embodiment of the present utility model, the light receiver lens 32 include multiple coaxial focusing lens 321,
Multiple focusing pieces are sent to the laser pickoff 31 after the laser that the object under test 4 reflects is focused.
In an embodiment of the present utility model, the processor 1 includes speedy carding process unit 11, standard output unit 12
With high-precision output unit 13；The speedy carding process unit 11 exports the range of laser as the standard output unit 12 and described
High-precision output unit 13 exports the half of the range of laser；The precision that the high-precision output unit 13 exports laser is described
Four times of the precision of speedy carding process unit 11 and the standard output unit 12 output laser.
In an embodiment of the present utility model, the processor 1 also includes display unit 14, and the display unit 14 wraps
It is in the latticed display screen with coordinate to include；The processor 1 according to laser determine 4 each surface of object under test away from
From, and be shown on the display screen.
Preferably, the laser pickoff 31 is CCD, i.e. charge coupled device.CCD, English full name：Charge-
Coupled Device, Chinese full name：Charge coupled cell.Ccd image sensor is properly termed as, is also image controller.CCD
It is a kind of semiconductor devices, optical image can be converted into electric signal.The small photoactive substance being implanted on CCD is referred to as pixel
(Pixel).The pixel count included on one piece of CCD is more, and the screen resolution that it is provided is also higher.CCD's acts like glue
Piece is the same, but it is that optical signal is converted into charge signal.There is the photodiode of many marshallings on CCD, light can be sensed
Line, and electric signal is converted optical signals into, it is converted into data image signal through external sampling amplification and analog to digital conversion circuit.It is preferred that
Ground, CCD is used to absorb plane picture using dot matrix CCD including x, y both direction in the present embodiment.
Preferably, the light receiver lens 32 are Gauss lens.The group mirror construction of aspheric lens is contained, can be suppressed
The aberration that wide-angle lens is held, the image of distinctness is presented.Backlight can not only be received, the anti-of inclined ramp can also be received
Light.
Further, the highest measurement speed of the laser displacement measurement device is 5000000, unit 3D-point/
s。
In laser displacement measurement device provided by the utility model, measured using non-contact laser, can be to different tables
The object under test in face measures, and is not influenceed by object under test surface gloss, there is outstanding accurate rate and resolution ratio, while can
To measure inclined surface.With very high commercial exploitation and the value promoted.
Embodiment of the present utility model is described above in conjunction with accompanying drawing, but the utility model is not limited to
The embodiment stated, above-mentioned embodiment is only schematical, rather than restricted, this area it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under enlightenment of the present utility model
Under, many forms can be also made, these are belonged within protection of the present utility model.
Claims (7)
- A kind of 1. laser displacement measurement device, for measuring the displacement of object under test, it is characterised in that including：Processor；Laser beam emitting device, it is connected with the processor, including generating laser and light diversing lens；The processor controls institute Laser transmitter projects laser is stated, laser is radiated on the object under test the smooth diversing lens into strips by laser light scattering；Laser receiver, including laser pickoff and light receiver lens；The light receiver lens are by the object under test The laser pickoff is sent to after the laser pick-off of reflection；The laser pickoff sends laser to the processor, institute The distance that processor judges the object under test according to laser is stated, and is treated according to calculating the change of the object under test distance Survey the displacement of object.
- 2. laser displacement measurement device according to claim 1, it is characterised in that the light receiver lens include multiple Coaxial focusing lens, multiple focusing pieces are sent to the laser after the laser that the object under test reflects is focused Receiver.
- 3. laser displacement measurement device according to claim 1, it is characterised in that the processor includes speedy carding process list Member, standard output unit and high-precision output unit；The range of the speedy carding process unit output laser is the standard output The half of the range of unit and the high-precision output unit output laser；The precision of the high-precision output unit output laser It is four times of the precision of the speedy carding process unit and standard output unit output laser.
- 4. laser displacement measurement device according to claim 1, it is characterised in that it is single that the processor also includes display Member, it is in the latticed display screen with coordinate that the display unit, which includes,；The processor determines the determinand according to laser The distance on each surface of body, and be shown on the display screen.
- 5. laser displacement measurement device according to claim 1, it is characterised in that the laser pickoff is CCD.
- 6. laser displacement measurement device according to claim 1, it is characterised in that the light receiver lens are Gauss mirror Head.
- 7. the laser displacement measurement device according to any one of claim 1 to 6, it is characterised in that the laser displacement is surveyed The highest measurement speed for measuring device is 5000000, unit 3D-point/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660418.4U CN206818149U (en) | 2017-06-07 | 2017-06-07 | A kind of laser displacement measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720660418.4U CN206818149U (en) | 2017-06-07 | 2017-06-07 | A kind of laser displacement measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206818149U true CN206818149U (en) | 2017-12-29 |
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ID=60759307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720660418.4U Active CN206818149U (en) | 2017-06-07 | 2017-06-07 | A kind of laser displacement measurement device |
Country Status (1)
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|---|---|
| CN (1) | CN206818149U (en) |
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2017
- 2017-06-07 CN CN201720660418.4U patent/CN206818149U/en active Active
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