CN2105667U - Laser measurer for torsional angle - Google Patents
Laser measurer for torsional angle Download PDFInfo
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- CN2105667U CN2105667U CN 91222479 CN91222479U CN2105667U CN 2105667 U CN2105667 U CN 2105667U CN 91222479 CN91222479 CN 91222479 CN 91222479 U CN91222479 U CN 91222479U CN 2105667 U CN2105667 U CN 2105667U
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- laser
- measuring device
- measuring
- torsion angle
- photoelectric
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Abstract
The utility model relates to a laser measurer for torsion angles, which comprises a light source and a reflector. The laser measurer for torsion angles is characterized in that the light source adopts a laser gun; a beam expander and a light column are arranged between the laser gun and the reflector; a photoelectric converter is arranged in the reflection direction of the reflector, and is mutually connected with a receiving amplifier through conducting wires. The reflector arranged at the measured component reflects the parallel and high-intensity monochromatic light beam emitted by the laser gun onto the photoelectric converter, and the photoelectric converter outputs the torsion light signals in the electrical signals mode; after the electrical signals pass through the receiving amplifier, the torsion data can be directly displayed and recorded in real time on a recorder or a displayer.
Description
The utility model belongs to the physical testing instrument field, relates in particular to test specimen or reverses the measurement mechanism of dynamic little torsion angle of parts.
The extensive at present determinator that adopts with the optical lever principle design of mensuration for test specimen or parts torsion angle.This device is to reverse the little concave mirror that an additional reflection windup-degree changes on the parts, shining on this little mirror with source of parallel light; When parts deflection, utilize the rectilinear propagation of light and the increase by the reflection light path on the facet mirror that the minute angle of deflection is amplified, and on graduated frosted glass chi artificial reading.Though this instrument that is commonly called as lamp chi device is a kind of easy device of measuring small distortion that is widely used in, and owing to utilize the principle of similitude of geometrical optics to make magnification in certain light path scope, have reliable and stable characteristics, but still have the following disadvantages: (1) is by the cursor palpus manual observation of mirror reflects on rule, thereby make tester's fatiguability, and have personal error; (2) because ordinary ray is easily dispersed, the distance of chi mirror (light path) in fact only just can obtain cursor clearly in a fixed range, thereby enlargement factor is limited, causes degree of accuracy very limited; (3) this device must be in the darkroom or the special optical channel aptitude test that hides is set, thereby brings many constant in the use.
Provide a kind of determinator based on not enough the utility model of existing torsion angle determinator with little torsion angle of degree of accuracy height, easy to use, applied range.
The laser measuring device for measuring of the torsion angle that provides of the utility model reaches by following manner to achieve these goals: this device comprises light source and catoptron, be characterized in that light source adopts laser gun, beam expander and Guang Lan are set between laser gun and the catoptron, on the reflection direction of catoptron photoelectric commutator is set, this photoelectric commutator links by lead and reception amplifier.
Below the utility model is described in detail:
According to structural representation shown in Figure 1, the laser measuring device for measuring of torsion angle comprises light source (2), beam expander (3), light hurdle (4), catoptron (5), photoelectric commutator (7) and reception amplifier (8), beam expander is made by concavees lens and convex lens, catoptron adopts concave mirror, and magazine (6) is set before photoelectric commutator.Light source adopts laser gun to launch laser, and this laser gun can adopt the He-Ne Lasers rifle, and it is stable with the laser beam that guarantees to launch to supply with burning voltage by stabilized voltage supply (1).The laser that laser gun sends is expanded bundle and is focused on the back by the light hurdle by beam expander, the laser that makes on the catoptron to be shone is a branch of parallel and high-intensity homogeneous beam, and can also access suitable light beam and light intensity according to the catoptron on unit under test size and apart from beam expander, the light intensity that reflexes on the photoelectric commutator is adjusted to till the best.Photoelectric commutator can be installed on the adjusting bracket of three degree fine settings, and the little magazine of black that is arranged on its place ahead can prevent entering of parasitic light, so that help to improve the resolution of photoelectric commutator.The concave mirror that is arranged on the catoptron employing of unit under test is superior to level crossing, its curvature is to be decided by required sensitivity, photoelectric commutator is transformed into electric signal output with light signal, its output signal is input to reception amplifier by lead further amplifies, and its amplifying signal is by showing in real time on the instruments such as registering instrument or display.
The laser measuring device for measuring of above-mentioned torsion angle, photoelectric commutator can adopt photoelectric cell, and this photoelectric cell is one of circular light battery or diagonal form photoelectric cell.Round photocell structure is according to shown in Figure 2, on round insulation sheet (10), be provided with two semicircle workplaces (11), this workplace is selected the silicon mating plate usually for use, and insulated separation line (12) is set between two silicon mating plates, and the light that workplace receives converts the mode of electricity to by lead-in wire (9) output.The diagonal form photocell structure is according to shown in Figure 3, and workplace (13) is that two silicon mating plates triangular in shape arrange that with the angle symmetrical manner two of the silicon mating plate respectively are provided with lead-in wire (14).When photoelectric commutator adopts circular light battery or diagonal form photoelectric cell, mirror reflects cursor on the unit under test must be adjusted near insulated separation line or the place, diagonal angle before measuring, along with the distortion folded light beam of unit under test is mobile on the photoelectric cell workplace, thereby photoelectric cell is exported the light signal of distortion in the electric signal mode.
Can also select the optical grating photoelectric pond for use when photoelectric commutator adopts photoelectric cell, its structure is made up of a plurality of photoelectric cell groups according to shown in Figure 4, every group of photoelectric cell by four independently photosensitive unit form, every all has independently and goes between.In fact the photoelectric cell of this structure is to be evenly divided into four by the normal optical battery with each photoelectric cell group that uniform distances is arranged, is equipped with the insulation fine rule between every, all forms by independently going between for every.Precision when such structure has guaranteed light beam transition between adjacent light electric battery and the every group of photoelectric cell unit, its precision is by the insulation fine rule width decision of every group of photoelectric cell unit.
Opto-electronic conversion is when adopting above-mentioned photoelectric cell, reception amplifier can adopt following amplifying circuit that the electric signal of being imported is amplified, promptly according to shown in Figure 5, this amplifying circuit be on two positive and negative pickup electrodes on the operational amplifier LM respectively with divider resistance R
1, R
2Link R
1Fixedly feedback resistance R connects between the LM negative signal utmost point that is joined and the output terminal of LM
3With the variable resistor R that is used to adjust enlargement factor and feedback quantity size
4, and the positive-negative power of LM extremely goes up and disposes correspondent voltage respectively, this voltage is generally ± 15V.Because the grating photoelectric cell be by four many groups that photovoltaic element is formed photoelectric cells, thereby the amplifying circuit of every photoelectric cell group is to be in parallel by four above-mentioned amplifying circuits to form, i.e. the amplifying circuit of being realized by four LM.In order to prevent undesired signal and to reduce the amount distortion of signal, can connect the cotype anti-jamming circuit between photoelectric commutator and the reception amplifier.
According to the laser measuring device for measuring of above-mentioned torsion angle, photoelectric commutator can also adopt the electric charge coupling light electric transducer of being made up of the CCD device.According to shown in Figure 6, this electric charge coupling light electric transducer is made up of CCD device, driving amplifying circuit, circuit for synchronizing, exposure oscillator, clock oscillator and pre-amplification circuit, exposure oscillator and clock oscillator are by behind the circuit for synchronizing, be input to the CCD device through driving to amplify, and the CCD device links with pre-amplification circuit.The CCD device is the buried channel linear array optical sensor that 2048 pixel units are formed, and the signal that is produced by exposure oscillator and clock oscillator further amplifies on driving amplifier after the circuit for synchronizing synchronization, and with this driven CCD device; Meanwhile, the CCD device is with the signal output logic signal after preposition amplification that is received.After reception amplifier further amplifies, can connect single-chip microcomputer or computing machine according to above-mentioned electric charge coupling light electric transducer by interface, make the light signal of distortion can be directly on registering instrument that single-chip microcomputer joined or computing machine demonstration or record.
The utility model has the characteristics of degree of accuracy height, easy to use, applied range according to the laser measuring device for measuring of the torsion angle that said structure provided, can realize the light signal of little distortion is directly shown or record, thereby existing fatiguability when having avoided artificial reading, be prone to the possibility of error, and compare it with existing technology and measure sensitivity and increase substantially.As when photoelectric commutator adopts the electric charge coupling light electric transducer of being made up of the CCD device, light path is that its resolution reaches 2.8 * 10 in 3 meters
-4Degree.
One of embodiment that the utility model provides:
According to the laser measuring device for measuring of above-mentioned torsion angle, when photoelectric commutator adopted circular light battery or diagonal form photoelectric cell, it received amplifying circuit according to shown in Figure 7, and operational amplifier is selected LM324 for use, resistance R
1=R
2=3K Ω, R
3=82K Ω, R
4=100K Ω, and at output signal end connection stabilivolt 2CW14.
Two of the embodiment that the utility model provides:
According to the laser measuring device for measuring of above-mentioned torsion angle, when photoelectric commutator adopted the raster pattern battery, the reception amplifying circuit of each photoelectric cell unit was according to shown in Figure 8, and operational amplifier is selected LM358 for use, resistance R
1=R
2=10K Ω, R
3=470K Ω, R
4=470K Ω.
Description of drawings:
Fig. 1 is for showing the laser measuring device for measuring structural representation of the torsion angle that the utility model provides;
Fig. 2 shows the adoptable circular light battery structure of photoelectric commutator synoptic diagram in the laser measuring device for measuring of torsion angle;
Fig. 3 shows the adoptable diagonal form photocell structure of photoelectric commutator synoptic diagram in the laser measuring device for measuring of torsion angle;
Fig. 4 shows the adoptable optical grating photoelectric pool structure of photoelectric commutator synoptic diagram in the laser measuring device for measuring of torsion angle;
Fig. 5 is the amplification circuit diagram that shows available reception amplifier when photoelectric commutator adopts photoelectric cell in the laser measuring device for measuring of torsion angle;
Fig. 6 is the structure principle chart that shows the adoptable electric charge coupling light of photoelectric commutator electric transducer in the laser measuring device for measuring of torsion angle;
Fig. 7 is of the present utility model by reception amplifier circuit diagram that one of embodiment provided for showing;
Fig. 8 is for the amplification path synoptic diagram that is provided by two of embodiment of utility model is provided.
Claims (10)
1, a kind of laser measuring device for measuring of torsion angle comprises light source and catoptron, it is characterized in that light source adopts laser gun, be provided with between laser gun and the catoptron and put bundle device and Guang Lan, on the reflection direction of catoptron photoelectric commutator is set, this photoelectric commutator links by lead and reception amplifier;
2, according to the laser measuring device for measuring of the described torsion angle of claim 1, it is characterized in that beam expander made by concavees lens and convex lens, catoptron adopts concave mirror, and magazine is set before photoelectric commutator;
3,, it is characterized in that photoelectric commutator adopts photoelectric cell, and this photoelectric cell is one of circular light battery, diagonal form photoelectric cell or optical grating photoelectric pond according to the laser measuring device for measuring of claim 1,2 described torsion angles;
4, according to the laser measuring device for measuring of claim 1,2 described torsion angles, it is characterized in that photoelectric commutator adopts electric charge coupling light electric transducer, this sensor is made up of CCD device, driving amplifying circuit, circuit for synchronizing, exposure oscillator, clock oscillator and pre-amplification circuit, wherein expose oscillator and clock oscillator by behind the circuit for synchronizing, be input to the CCD device through driving to amplify, and CCD device and pre-amplification circuit link;
5, according to the laser measuring device for measuring of the described torsion angle of claim 3, it is characterized in that amplifying circuit that reception amplifier adopts on two positive and negative pickup electrodes on the operational amplifier LM respectively with divider resistance R
1, R
2Link R
1Fixedly feedback resistance R connects between the LM negative signal utmost point that is joined and the output terminal of LM
3With variable resistor R
4, and the positive-negative power of LM is extremely gone up and is disposed correspondent voltage respectively;
6,, it is characterized in that operational amplifier selects LM324 for use, resistance R according to the laser measuring device for measuring of the described torsion angle of claim 5
1=R
2=3K Ω, R
3=82K Ω, R
4=100K Ω, and on the output terminal of LM, connect stabilivolt 2CW14;
7,, it is characterized in that operational amplifier selects LM358 for use, resistance R according to the laser measuring device for measuring of the described torsion angle of claim 5
1=R
2=10K Ω, R
3=470K Ω, R
4=470K Ω;
8, according to the laser measuring device for measuring of the described torsion angle of claim 3, it is characterized in that the circular light battery structure on the round insulation sheet, to be provided with two semicircle workplaces, this workplace is selected the silicon mating plate for use, between two silicon mating plates the insulated separation line is set;
9,, it is characterized in that the diagonal form photocell structure is that workplace two silicon mating plates triangular in shape arrange that with the angle symmetrical manner both sides of silicon mating plate respectively are provided with lead-in wire according to the laser measuring device for measuring of the described torsion angle of claim 3;
10,, it is characterized in that connecting the cotype anti-jamming circuit between photoelectric commutator and the reception amplifier according to the laser measuring device for measuring of the described torsion angle of claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91222479 CN2105667U (en) | 1991-11-12 | 1991-11-12 | Laser measurer for torsional angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91222479 CN2105667U (en) | 1991-11-12 | 1991-11-12 | Laser measurer for torsional angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2105667U true CN2105667U (en) | 1992-05-27 |
Family
ID=4929343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91222479 Granted CN2105667U (en) | 1991-11-12 | 1991-11-12 | Laser measurer for torsional angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2105667U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306245C (en) * | 2005-02-08 | 2007-03-21 | 王治平 | Laser digital angle measuring method and apparatus thereof |
| CN101358841B (en) * | 2007-08-01 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Color wheel parameter detecting system and method |
| CN101358840B (en) * | 2007-08-01 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Color wheel parameter detecting system and method |
| CN102032879A (en) * | 2010-10-18 | 2011-04-27 | 北京理工大学 | Device for testing torsional angle of mast system based on high speed camera and design method thereof |
| CN103557809A (en) * | 2013-10-30 | 2014-02-05 | 北京理工大学 | Multipoint angle measuring device based on CCD |
| CN103808502A (en) * | 2014-01-28 | 2014-05-21 | 长沙理工大学 | Measuring device and measuring method for element torsion and position parameters |
-
1991
- 1991-11-12 CN CN 91222479 patent/CN2105667U/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306245C (en) * | 2005-02-08 | 2007-03-21 | 王治平 | Laser digital angle measuring method and apparatus thereof |
| CN101358841B (en) * | 2007-08-01 | 2010-06-16 | 鸿富锦精密工业（深圳）有限公司 | Color wheel parameter detecting system and method |
| CN101358840B (en) * | 2007-08-01 | 2010-06-23 | 鸿富锦精密工业（深圳）有限公司 | Color wheel parameter detecting system and method |
| CN102032879A (en) * | 2010-10-18 | 2011-04-27 | 北京理工大学 | Device for testing torsional angle of mast system based on high speed camera and design method thereof |
| CN103557809A (en) * | 2013-10-30 | 2014-02-05 | 北京理工大学 | Multipoint angle measuring device based on CCD |
| CN103808502A (en) * | 2014-01-28 | 2014-05-21 | 长沙理工大学 | Measuring device and measuring method for element torsion and position parameters |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |