CN201251534Y - Michelson comprehensive experimental instrument - Google Patents
Michelson comprehensive experimental instrument Download PDFInfo
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- CN201251534Y CN201251534Y CNU2008201884940U CN200820188494U CN201251534Y CN 201251534 Y CN201251534 Y CN 201251534Y CN U2008201884940 U CNU2008201884940 U CN U2008201884940U CN 200820188494 U CN200820188494 U CN 200820188494U CN 201251534 Y CN201251534 Y CN 201251534Y
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- michelson
- lead screw
- force measuring
- experimental instrument
- comprehensive experimental
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Abstract
The utility model discloses a Michelson comprehensive experimental instrument, comprising an optical path difference indication mechanism, a moving carrier (4) mounted on the frame (1), a Michelson interferometer formed by a parallel guide rail (2) and a stretcher. The stretcher comprises a handwheel (7) and a driving lead screw (9); a force measuring mechanism capable to measure the tensile force by the movement of the driving lead screw is mounted between the driving lead screw (9) and the moving carrier (4); the force measuring mechanism comprises an elastic ring, an electric resistance strain gage arranged on the elastic ring and a tension meter (14) are connected by a lead (13). The Michelson comprehensive experimental instrument has the advantages of high measurement precision, little error, novel structure and stable and easy operation, and the result of micro-elongation measurement can reach the degree of magnitude of light-wave length. The Michelson comprehensive experimental instrument is capable to expand the knowledge scope of students during teaching, and has strong practicality in production and scientific research.
Description
Technical field
The utility model relate to a kind of be used to measure metal special rational can device, be the Michelson comprehensive test instrument that the function combinations of a kind of comprehensive Michelson interferometer and Young modulus instrument forms specifically.
Background technology
Eighties of last century is after the seventies, and the semiconductor circuit integrated technology increases exhibition rapidly, and the SIC (semiconductor integrated circuit) piece of large-sized multifunction is used very extensive in each field, and digital circuit and mimic channel are changed mutually, and this provides convenience to the electrical measurement that realizes non-electrical quantities.
Known that by the mechanics of materials in elastic range, annulus is subjected to the effect of power in diametric(al), the deformation that causes is directly proportional with the size of power.If stick resistance strain gage on the wall of annulus, because the effect of strain, the resistance of resistance strain gage will change, and resistance strain gage is the change that will cause the output potential difference in electric bridge.We are converted into the electric potential difference measurement to force measurement like this, are converted into the size demonstration of power then again by digital operational circuit.
The method of measuring Young modulus wiry is a lot, and the key distinction is to measure the method for small elongation.As the optical lever amplifying method, diffraction approach, measuring microscope direct-reading method or the like.
All there is the not strong shortcoming of complex structure, troublesome poeration, practicality in the instrument that present Michelson interferometer and Young modulus instrument are combined.
Summary of the invention
The purpose of this utility model is provides a kind of measuring accuracy height, error Michelson comprehensive test instrument little, easy and simple to handle.
The Michelson comprehensive test instrument that the utility model provides, comprise by the optical path difference indication mechanism, be installed in the Michelson interferometer that mobile pallet, closed slide and drawing mechanism on the support body are formed, drawing mechanism is made up of handwheel, drive lead screw, be equipped with by drive lead screw between drive lead screw and mobile pallet and move the force measuring machine that measures pulling force, described force measuring machine comprises resilient ring, places resistance strain gage and the dynamometer that is connected by lead on the resilient ring.
Resilient ring in the force measuring machine force measuring machine is connected with mobile pallet with drive lead screw by coil tension spring.
This resilient ring is made by steel, alloy or carbon fibre material, or adopts other material with elastic material to make.
The utility model as long measure, is measured small elongation with this immutable amount of monochromatic wavelength based on Michelson interferometer, further calculates Young modulus wiry.Michelson interferometer and modulus measurer wiry are combined by force measuring machine, can measure Young modulus wiry.The utlity model has that measuring accuracy height, error are little, novel structure, operation is steady and characteristic of simple, the measurement result of small elongation is reached the order of magnitude of optical wavelength.In teaching, can widen the students'knowledge face, in production and scientific research, good practicability be arranged also.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A part enlarged drawing of Fig. 1.
Embodiment
With reference to Fig. 1, Fig. 2, the Michelson comprehensive test instrument that the utility model provides, a kind of Michelson comprehensive test instrument, comprise by the optical path difference indication mechanism, be installed in the mobile pallet 4 on the support body 1, the Michelson interferometer that closed slide 2 and drawing mechanism are formed, wherein the optical path difference indication mechanism is by optical screen 8, be installed in the reflection and transmission mirror 12 on the support 11, offset lens 6, reflective mirror 5 and the catoptron 3 that is fixed on the mobile pallet 4 are formed, this support 11 is installed between optical screen 8 and the mobile pallet 4, drawing mechanism is by handwheel 7, drive lead screw 9 is formed, between drive lead screw 9 and mobile pallet 4, be equipped with and move the force measuring machine that measures pulling force by drive lead screw, mobile pallet 4 and support body 1 are away from being used for fixing tinsel 15 between optical screen 8 other ends, described force measuring machine comprises resilient ring 16, place resistance strain gage 17 and the dynamometer 14 that is connected by lead 13 on the resilient ring, wherein the resilient ring in the force measuring machine force measuring machine 16 is connected with mobile pallet 4 with drive lead screw 9 by coil tension spring 10, and this resilient ring 16 is by steel, alloy or carbon fibre material are made.
During use, can mobile drive lead screw 9 when rotating handwheel 8, drive coil tension spring 10, dynamometer 14 is measured the pulling force size, resilient ring in the dynamometer 14 16 spurs mobile pallets 4 simultaneously, the also same moved further of catoptron 3 on the mobile pallet 4, stretched wire 15 when mobile pallet 4 moved, distance between catoptron 3 and the reflection and transmission mirror 12 just changes, be that optical path difference in the light path changes, interference fringe in the optical screen 9 can occur the emerging phenomenon of " or falling into into ", the change value of optical path difference equals elongation wiry.
Its measuring process is as follows:
(1) calibration of dynamometer: with dynamometer with have the digital voltmeter of power supply (in order to improve precision, select for use potential difference meter to make milivoltmeter) connect, the preheating of switching on then, in the scale pan of the lower end of dynamometer, add counterweight, add counterweight etc. quality ground, from digital voltmeter, read the corresponding voltage output valve successively;
(2) will calibrate good dynamometer (this moment, electronics milivoltmeter registration was the size of power) and other part installs;
(3) lead straight tinsel, progressively apply pulling force, read fringe number and corresponding output voltage that optical screen moves past to dynamometer;
(4) survey length wiry and diameter with ruler and milscale respectively;
(5) calculate the result according to existing formula.
According to above-mentioned structure, also can finish the experiment of sensor aspect.
In addition, Michelson interferometer and metal wire dilatometer are combined, can measure expansion coefficients of metal wire.
Claims (3)
1, a kind of Michelson comprehensive test instrument, comprise by the optical path difference indication mechanism, be installed in the Michelson interferometer that mobile pallet [4], closed slide [2] and drawing mechanism on the support body [1] are formed, drawing mechanism is made up of handwheel [7], drive lead screw [9], it is characterized in that being equipped with by drive lead screw between drive lead screw [9] and mobile pallet [4] and move the force measuring machine that measures pulling force, described force measuring machine comprises resilient ring [16], places resistance strain gage [17] and the dynamometer [14] that is connected by lead [13] on the resilient ring.
2, Michelson comprehensive test instrument according to claim 1 is characterized in that the resilient ring [16] in the force measuring machine is connected with mobile pallet [4] with drive lead screw [9] by coil tension spring [10].
3, Michelson comprehensive test instrument according to claim 1 is characterized in that resilient ring [16] made by steel, alloy, carbon fibre material or other material with elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201884940U CN201251534Y (en) | 2008-08-08 | 2008-08-08 | Michelson comprehensive experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201884940U CN201251534Y (en) | 2008-08-08 | 2008-08-08 | Michelson comprehensive experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251534Y true CN201251534Y (en) | 2009-06-03 |
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ID=40747206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201884940U Expired - Fee Related CN201251534Y (en) | 2008-08-08 | 2008-08-08 | Michelson comprehensive experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251534Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297285A (en) * | 2014-09-10 | 2015-01-21 | 董赫 | Metal linear expansion coefficient measuring device based on Michelson interference method |
| CN105466342A (en) * | 2015-12-30 | 2016-04-06 | 西南交通大学 | Device for measuring micro displacement |
| CN105466769A (en) * | 2015-12-30 | 2016-04-06 | 西南交通大学 | Young modulus measuring instrument |
| CN105627930A (en) * | 2015-12-30 | 2016-06-01 | 西南交通大学 | Displacement monitoring instrument for separation layer of surrounding rock |
-
2008
- 2008-08-08 CN CNU2008201884940U patent/CN201251534Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297285A (en) * | 2014-09-10 | 2015-01-21 | 董赫 | Metal linear expansion coefficient measuring device based on Michelson interference method |
| CN105466342A (en) * | 2015-12-30 | 2016-04-06 | 西南交通大学 | Device for measuring micro displacement |
| CN105466769A (en) * | 2015-12-30 | 2016-04-06 | 西南交通大学 | Young modulus measuring instrument |
| CN105627930A (en) * | 2015-12-30 | 2016-06-01 | 西南交通大学 | Displacement monitoring instrument for separation layer of surrounding rock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20110808 |