CN109579743A - A kind of photoelectric angle measuring device applied under thermal vacuum environment - Google Patents
A kind of photoelectric angle measuring device applied under thermal vacuum environment Download PDFInfo
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- CN109579743A CN109579743A CN201811416468.3A CN201811416468A CN109579743A CN 109579743 A CN109579743 A CN 109579743A CN 201811416468 A CN201811416468 A CN 201811416468A CN 109579743 A CN109579743 A CN 109579743A
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- vacuum environment
- thermal vacuum
- measuring device
- under thermal
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- 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
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The present invention relates to angle measurement technique fields under thermal vacuum environment; specifically disclose a kind of photoelectric angle measuring device applied under thermal vacuum environment; protective cover including being fixedly connected with low bulk matrix, the multilayer insulation piece on protective cover lateral wall, the electric heating sheets on protective cover inner sidewall, the main body in protective cover and optical tubes, and it is mounted on the eyeglass at optical tubes both ends.The method of the present invention solves the high-acruracy survey problem of minute angle in thermal vacuum environment, overcomes the disadvantage that traditional measuring device is at high cost, application range is small.
Description
Technical field
The invention belongs to angle measurement technique fields under thermal vacuum environment, and in particular to a kind of light applied under thermal vacuum environment
Electrical measurement angle apparatus.
Background technique
It is directed under thermal vacuum environment both at home and abroad at present and uses research of the photoelectric method to minute angle high precision measurement technology
It is few and immature, the non-cpntact measurement of structure size is concentrated mainly on and uses photogrammetric or vision measurement method.
Thermal vacuum environment refers to vacuum degree better than 1.3 × 10-3Pa, environment temperature is at -173 DEG C~+50 DEG C.Foreign countries are directed to vacuum
The feature and different measurement requests of different measurands, the measurement method of use are relatively more under thermal environment: utilizing holographic method
Antenna thermal deformation is measured under space environmental simulation, and ceramic material thermal deformation is measured using Digital Speckle Correlation Method, utilizes base
The deflection changed linearly over time is dynamically measured in the measurement method of phase shift principle, measurement accuracy is no more than ± 0.1mm etc..State
The measurement of the interior deformation under thermal vacuum environment mainly uses photogrammetric method.But these measurement method measurement accuracy are not
It is high, often complex in realization, and relevant measuring device cost is very high, therefore application range is more limited to, it can not
Meet the high-acruracy survey requirement of minute angle deformation.
Using photoelectric angle measuring device at normal temperatures and pressures to the method for tiny angle measurement, measurement accuracy height, measurement method
It is simple and easy, technology maturation is reliable, be of wide application.But due to the lens materials of photogoniometer, structural metallic materials
Difference will appear biggish malformation in thermal vacuum environment, so as to cause the structure change of optical measuring system, in turn
Cause the variation of measurement accuracy.The serious application for restricting photogoniometer in thermal vacuum environment.
Summary of the invention
The purpose of the present invention is to provide a kind of photoelectric angle measuring devices applied under thermal vacuum environment, realize in Vacuum Heat
To the high-acruracy survey of minute angle under environment.
Technical scheme is as follows:
A kind of photoelectric angle measuring device applied under thermal vacuum environment, including multilayer insulation piece, electric heating sheets, main body, light
Learn lens barrel, protective cover, low bulk matrix and eyeglass；
The protective cover and low bulk matrix are spirally connected fixation；
The optical tubes and main body, which are spirally connected, forms angle measurement unit, and the angle measurement unit is located at by protective cover and low swollen
In the space that swollen matrix surrounds, and it is spirally connected fixation with low bulk matrix；
It is equipped with multilayer insulation piece on the lateral wall of the protective cover, electric heating sheets are equipped on the inner sidewall of protective cover；
The eyeglass passes through pressing ring respectively and is pressed abd fixed on the inner wall at optical tubes both ends.
It further include being machined with gas vent on the inner wall of the optical tubes, to guarantee in extraneous ambient pressure variations,
Air pressure between two eyeglasses keeps balance, avoids causing lens position to shift due to air pressure change.
It further include that thermistor is equipped on the inner sidewall of the protective cover.
The linear expansion coefficient of the main body and the material of eyeglass are close, so that when temperature changes, the two knot
Deformation occurs simultaneously for structure, the deformation quantity due to caused by temperature change will control between the two in minimum.
The multilayer insulation piece and electric heating sheets can guarantee optimum temperature model of the angle measurement cell operation at 20 ± 10 DEG C
In enclosing.
The lens curvature can compensate automatically wave difference after optimization within the scope of wide warm area.
The eyeglass selects K9 optical glass material, and linear expansion coefficient is 7.6 × 10-6/℃。
The main body selects titanium alloy TC 4 material, and linear expansion coefficient is 7.9 × 10-6/℃。
The vacuum degree of the thermal vacuum environment is better than 1.3 × 10-3Pa, environment temperature is at -173 DEG C~+50 DEG C.
The thermal vacuum environment is outer space environment.
Remarkable result of the invention is:
Present invention employs match materials methods, and by controlling pollutant, and design has thermal controls apparatus, will be based on
The measuring device of photoelectricity angle measuring principle is applied in thermal vacuum environment, and the high-precision for solving minute angle in thermal vacuum environment is surveyed
Problem is measured, the disadvantage that traditional measuring device is at high cost, application range is small is overcome.
Detailed description of the invention
Fig. 1 is photoelectric angle measuring device structural schematic diagram.
In figure: 1- multilayer insulation piece；2- electric heating sheets；3- main body；4- optical tubes；5- protective cover；6- low bulk matrix；
7- eyeglass；8- pressing ring；9- gas vent.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of photoelectric angle measuring device applied under thermal vacuum environment as shown in Figure 1 can be suitable for outer space environment,
Including multilayer insulation piece 1, electric heating sheets 2, main body 3, optical tubes 4, protective cover 5, low bulk matrix 6 and eyeglass 7.
The protective cover 5 and low bulk matrix 6 are spirally connected fixation, and the optical tubes 4 and main body 3, which are spirally connected, forms angle measurement
Unit, the angle measurement unit is located in the space surrounded by protective cover 5 and low bulk matrix 6, and is spirally connected with low bulk matrix 6
It is fixed.
On the lateral wall of the protective cover 5 be equipped with multilayer insulation piece 1, by multilayer insulation piece 1 inhibit angle measurement unit to
Heat sink heat loss through radiation, Enhanced Radiation Reduced Blast heat transfer resistance reduce radiation heat transfer heat.It is equipped on the inner sidewall of the protective cover 5
Thermistor and electric heating sheets 2, for controlling the temperature gradient of angle measurement unit.2 energy of multilayer insulation piece 1 and electric heating sheets
Enough guarantee angle measurement cell operation in 20 ± 10 DEG C of optimum temperature range.
The eyeglass 7 selects K9 optical glass material, is pressed abd fixed on 4 both ends of optical tubes by pressing ring 8 respectively
On inner wall, compound refraction type structure is formed, each 7 curvature of eyeglass can compensate automatically wave within the scope of wide warm area after optimization
Difference.The moisture resistance rank of K9 optical glass is few containing calcium oxide less than 2 grades, and chemical property is stablized, linear expansion coefficient 7.6
×10-6/℃。
It is machined with gas vent 9 on the inner wall of the optical tubes 4, to guarantee in extraneous ambient pressure variations, two mirrors
Air pressure between piece 7 keeps balance, avoids that 7 position of eyeglass is caused to shift due to air pressure change, influences image quality, in turn
Influence measurement accuracy.
The linear expansion coefficient of the main body 3 is close with the material of eyeglass 7, so that when temperature changes, the two
Deformation occurs simultaneously for structure, the deformation quantity due to caused by temperature change will control between the two in minimum.The main body 3 is selected
Titanium alloy TC 4 material, linear expansion coefficient are 7.9 × 10-6/ DEG C, it is closest with K9 optical glass.
Claims (10)
1. a kind of photoelectric angle measuring device applied under thermal vacuum environment, it is characterised in that: add including multilayer insulation piece (1), electricity
Backing (2), main body (3), optical tubes (4), protective cover (5), low bulk matrix (6) and eyeglass (7)；
The protective cover (5) and low bulk matrix (6) are spirally connected fixation；
The optical tubes (4) and main body (3), which is spirally connected, forms angle measurement unit, and the angle measurement unit is located at by protective cover (5)
In the space surrounded with low bulk matrix (6), and it is spirally connected fixation with low bulk matrix (6)；
It is equipped with multilayer insulation piece (1) on the lateral wall of the protective cover (5), electricity is equipped on the inner sidewall of protective cover (5) and is added
Backing (2)；
The eyeglass (7) is pressed abd fixed on the inner wall at optical tubes (4) both ends by pressing ring (8) respectively.
2. a kind of photoelectric angle measuring device applied under thermal vacuum environment as described in claim 1, it is characterised in that: further include
Gas vent (9) are machined on the inner wall of the optical tubes (4), to guarantee in extraneous ambient pressure variations, two eyeglasses (7)
Between air pressure keep balance, avoid that eyeglass (7) position is caused to shift due to air pressure change.
3. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 2, it is characterised in that: further include
Thermistor is equipped on the inner sidewall of the protective cover (5).
4. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 3, it is characterised in that: the master
The linear expansion coefficient of body (3) is close with the material of eyeglass (7), so that the two structure is sent out simultaneously when temperature changes
Raw deformation the deformation quantity due to caused by temperature change will be controlled in minimum between the two.
5. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 4, it is characterised in that: described
Multilayer insulation piece (1) and electric heating sheets (2) can guarantee angle measurement cell operation in 20 ± 10 DEG C of optimum temperature range.
6. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 5, it is characterised in that: described
Eyeglass (7) curvature can compensate automatically wave difference after optimization within the scope of wide warm area.
7. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 6, it is characterised in that: described
Eyeglass (7) selects K9 optical glass material, and linear expansion coefficient is 7.6 × 10-6/℃。
8. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 7, it is characterised in that: described
Main body (3) selects titanium alloy TC 4 material, and linear expansion coefficient is 7.9 × 10-6/℃。
9. a kind of photoelectric angle measuring device applied under thermal vacuum environment as described in any one of claims 1 to 8, feature exist
In: the vacuum degree of the thermal vacuum environment is better than 1.3 × 10-3Pa, environment temperature is at -173 DEG C~+50 DEG C.
10. a kind of photoelectric angle measuring device applied under thermal vacuum environment as claimed in claim 9, it is characterised in that: described
Thermal vacuum environment be outer space environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811416468.3A CN109579743A (en) | 2018-11-26 | 2018-11-26 | A kind of photoelectric angle measuring device applied under thermal vacuum environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416468.3A CN109579743A (en) | 2018-11-26 | 2018-11-26 | A kind of photoelectric angle measuring device applied under thermal vacuum environment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982508A (en) * | 1988-06-29 | 1991-01-08 | Dr. Johannes Heidenhain Gmbh | Position measuring device |
| CN101833168A (en) * | 2010-05-06 | 2010-09-15 | 中国科学院西安光学精密机械研究所 | Infrared detection device using reverse compensation heat dissipation design |
| CN103792641A (en) * | 2013-12-27 | 2014-05-14 | 中国科学院西安光学精密机械研究所 | Space optical lens |
| CN104503061A (en) * | 2014-12-24 | 2015-04-08 | 中国科学院光电研究院 | Active thermal control focusing device for space camera |
| CN105318891A (en) * | 2014-07-25 | 2016-02-10 | 北京航天计量测试技术研究所 | Star sensor reference cube-prism installation error calibration apparatus |
| CN106569521A (en) * | 2016-11-04 | 2017-04-19 | 北京控制工程研究所 | Precision temperature control device for X-ray pulsar navigation sensor |
| CN107407623A (en) * | 2015-04-21 | 2017-11-28 | 韩国产业技术大学校 | The device and method of liquid oxygen compound and soild oxide immersion angle of the measurement with reactivity |
-
2018
- 2018-11-26 CN CN201811416468.3A patent/CN109579743A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982508A (en) * | 1988-06-29 | 1991-01-08 | Dr. Johannes Heidenhain Gmbh | Position measuring device |
| CN101833168A (en) * | 2010-05-06 | 2010-09-15 | 中国科学院西安光学精密机械研究所 | Infrared detection device using reverse compensation heat dissipation design |
| CN103792641A (en) * | 2013-12-27 | 2014-05-14 | 中国科学院西安光学精密机械研究所 | Space optical lens |
| CN105318891A (en) * | 2014-07-25 | 2016-02-10 | 北京航天计量测试技术研究所 | Star sensor reference cube-prism installation error calibration apparatus |
| CN104503061A (en) * | 2014-12-24 | 2015-04-08 | 中国科学院光电研究院 | Active thermal control focusing device for space camera |
| CN107407623A (en) * | 2015-04-21 | 2017-11-28 | 韩国产业技术大学校 | The device and method of liquid oxygen compound and soild oxide immersion angle of the measurement with reactivity |
| CN106569521A (en) * | 2016-11-04 | 2017-04-19 | 北京控制工程研究所 | Precision temperature control device for X-ray pulsar navigation sensor |
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Application publication date: 20190405 |