CN106403990B - A kind of light axis consistency caliberating device - Google Patents
A kind of light axis consistency caliberating device Download PDFInfo
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- CN106403990B CN106403990B CN201510462999.6A CN201510462999A CN106403990B CN 106403990 B CN106403990 B CN 106403990B CN 201510462999 A CN201510462999 A CN 201510462999A CN 106403990 B CN106403990 B CN 106403990B
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- autocollimator
- group
- bracket
- light axis
- caliberating device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention belongs to the non-contact angle measurement fields of photoelectric auto-collimation, provide a kind of quick, convenient and fast optical path, complete the light axis consistency caliberating device of tested alignment prism emergent ray light axis consistency；A kind of light axis consistency caliberating device, it is used to group, alignment prism, rocket body bracket and integration test electric cabinet including autocollimator A, bidirectional electronic level meter, autocollimator B, testboard bay and adjustment bracket, double excitation, wherein the testboard bay and adjustment bracket are double-layer scaffold, upper layer bracket upper surface is equipped with cast aluminum casings, the cast aluminum casings both ends are respectively equipped with autocollimator A and autocollimator B, and a bidirectional electronic level meter is equipped between autocollimator A and autocollimator B；The testboard bay and the lower floor support for adjusting bracket are equipped with an integration test electric cabinet；The rocket body bracket is equipped with double excitation and is used to group, and the used group of the double excitation is that two laser to be measured is used to group, and each laser is used to be respectively equipped with an alignment prism in group.
Description
Technical field
The invention belongs to the non-contact angle measurement fields of photoelectric auto-collimation, and in particular to a kind of light axis consistency caliberating device.
Background technique
The navigation system on carrier rocket is to improve navigation accuracy more set strapdown inertial measurement units is usually selected to carry out redundancy system at present
It leads.The initial installation position deviation between two even more strapdown inertial measurement units of Accurate Calibration is needed before rocket flight.Strapdown is used
The alignment prism for representing its navigational coordinate system is installed in group, it is consistent by orientation of the external equipment to alignment prism emergent light axis
Property carry out calibration calibration to used group of initial installation position deviation can be completed.This calibration value is finally bound to carry in arrow and calculate
Navigation calculation is participated in machine.
According to conventional method, the mode of at least two theodolite networkings of calibration of alignment prism emergent light axis consistency
Indirectly obtain.Specific method is that wherein two theodolites are respectively collimated with alignment prism, then again mutually collimation to taking aim at,
Obtain two rotational angle thetas1With 360 ° of-θ2, then the deviation delta that two alignment prisms are initially installed is 180 °-(θ1+360°-θ2)。
There are many error term when measuring in this way, if test site sighting condition is bad, or even need more warps
Latitude instrument carrys out networking measurement.Main error item includes the instrument error of more theodolites itself, theodolite to when taking aim to taking aim at error,
The error of focusing of every instrument operator, to operating errors such as line errors, the quantity of theodolite is more, and error is bigger.These
1:1 is brought directly in measurement result by error, seriously affects the accuracy of measurement result.
This caliberating device can not only meet the accurate measurement of equipment under test initial attitude, and can overcome completely above-mentioned
Method there are the drawbacks of, and by measurement site environment influenced very little.
Summary of the invention
The object of the present invention is to which completion is tested in view of the shortcomings of the prior art, providing a kind of quick, convenient and fast optical path
The light axis consistency caliberating device of alignment prism emergent ray light axis consistency.
The technical scheme is that
A kind of light axis consistency caliberating device, including autocollimator A, bidirectional electronic level meter, autocollimator B, testboard
Frame and adjustment bracket, double excitation are used to group, alignment prism, rocket body bracket and integration test electric cabinet, wherein the testboard bay and
Adjustment bracket is double-layer scaffold, and upper layer bracket upper surface is equipped with cast aluminum casings, and the cast aluminum casings both ends are respectively equipped with autocollimatic
Straight instrument A and autocollimator B, is equipped with a bidirectional electronic level meter between autocollimator A and autocollimator B；The testboard bay
And the lower floor support of adjustment bracket is equipped with an integration test electric cabinet；The rocket body bracket is equipped with double excitation and is used to group, institute
Stating the used group of double excitation is that two laser to be measured is used to group, and each laser is used to be respectively equipped with an alignment prism in group.
The cast aluminum casings handle by actual effect and stablize processing.
The autocollimator A is parallel with the measurement optical axis of autocollimator B.
The beneficial effects of the present invention are:
1. the present invention demarcates the orientation values of alignment prism using CCD photoelectric auto-collimator, CCD photoelectric auto-collimator
Existing vertical pivot leveling error and artificial error of focusing when more theodolite networking measurements can be effectively avoided, line is collimated and is missed
Difference etc..
2. it is handled simultaneously since two CCD photoelectric auto-collimators sample return picture in the presence of control system simultaneously,
The error as caused by the disunity at collimation moment when avoiding manual operation.The automatic calculating of control system is also great simultaneously
It improves work efficiency, reduces the labor intensity of operator.
Detailed description of the invention
Fig. 1 is a kind of light axis consistency caliberating device structural schematic diagram；
Fig. 2 is a kind of light axis consistency caliberating device structure calibration process light path schematic diagram；
Fig. 3 is a kind of light axis consistency caliberating device structure principle chart.
Wherein, 1. autocollimator A；2. bidirectional electronic level meter；3. autocollimatic value instrument B；4. testboard bay and adjustment bracket；5.
Double excitation is used to group；6. alignment prism；7. rocket body bracket；8. integration test electronic box；
Specific embodiment
It a kind of is further introduced with embodiment to proposed by the present invention with reference to the accompanying drawing:
A kind of light axis consistency caliberating device, it is characterised in that: including autocollimator A1, bidirectional electronic level meter 2, autocollimatic
Straight instrument B3, testboard bay and the used group 5 of adjustment bracket 4, double excitation, alignment prism 6, rocket body bracket 7 and integration test electric cabinet 8,
Wherein the testboard bay and adjustment bracket 4 are double-layer scaffold, and upper layer bracket upper surface is equipped with cast aluminum casings, the cast aluminium shell
Body both ends are respectively equipped with autocollimator A1 and autocollimator B3, and a two-way electricity is equipped between autocollimator A1 and autocollimator B3
Sub- level meter 2；The testboard bay and the lower floor support for adjusting bracket 4 are equipped with an integration test electric cabinet 8；The rocket body
Bracket 7 is equipped with the used group 5 of double excitation, and the used group 5 of the double excitation is used to group for two laser to be measured, and each laser is used in group respectively
Equipped with an alignment prism 6.
The cast aluminum casings handle by actual effect and stablize processing.
The autocollimator A1 is parallel with the measurement optical axis of autocollimator B3.
Two CCD photoelectric auto-collimators are fixed in test, wherein two autocollimators are respectively aligned to master and slave used group
Alignment prism.The zero-bit optical axis of two autocollimators is taken aim at when leaving the factory after debugging at parallel according to two autocollimators alignments
The difference read after quasi- prism can calculate the gun parallax between two alignment prism normals.
In order to avoid horizontal error does not influence prism crest line caused by orientation, two CCD photoelectric autos in measuring device
Straight instrument should keep measuring under horizontality as far as possible, accurately level caliberating device using bidirectional electronic level meter and supervise in real time
It surveys, real-time compensation.
As shown in Fig. 1, CCD photoelectric auto-collimator is used to measure the orientation values of alignment prism outgoing normal, and has certainly
It is dynamic to line, the advantages that automatic collection, the automatic processing of automatic reading and data, while two CCD photoelectric auto-collimators are being controlled
It under the participation of system processed, resets, acquires simultaneously simultaneously, read simultaneously.It efficiently avoids existing when manual operation theodolite
Theodolite error itself and manual operation error.
Two CCD autocollimators are mounted on the shell of cast aluminium, and cast aluminum casings are handled by actual effect and disposal of stability, can
Effectively to guarantee that the deformation of high/low temperature condition lower substrate is minimum, and do not cause between two installed CCD autocollimators mutually
The variation of position.
After two CCD photoelectric auto-collimators are mounted on shell, by the method for precise finiss by the measurement optical axis tune of the two
It saves to parallel.Two alignment prism emergent light axis can be calibrated by being directed at the difference read after alignment prism according to two autocollimators
Conformity error.
The installation base surface of bidirectional electronic level meter is parallel with the plane where two CCD photoelectric auto-collimator emergent light axis,
Can be with the horizontality of real-time display caliberating device, real-time monitoring and real-time compensation for calibration process.
As shown in Fig. 3, read in reference bi electrolevel, make light axis consistency caliberating device with it is flat take aim at state with
Prism collimation to be calibrated.
Before to strapdown inertial measurement unit alignment prism emergent light axis consistency calibration, each used group of alignment prism phase should be calibrated first
To the installation error of used group of reference axis, i.e. α, β value；Wherein α is the not parallel mistake of prism crest line and used group reference axis around X-direction
Difference, β are the not parallel error of prism crest line and used group reference axis around Y direction.Wherein main part is used to used group of prism of group and backup
α, β value are respectively αIt is main、βIt is main, αIt is standby、βIt is standby, defining the angle rotated around X-axis is azimuth.
In formal calibration process, for two CCD photoelectric auto-collimators after collimating with alignment prism, reading is A and B respectively,
Then gun parallax of the used group prism of backup relative to the used group prism of main part
Δ=(B- αIt is standby)-(A- αIt is main)。
Claims (2)
1. a kind of light axis consistency caliberating device, it is characterised in that: including autocollimator A (1), bidirectional electronic level meter (2), from
Group (5), alignment prism (6), rocket body bracket (7) and synthesis are used in collimator B (3), testboard bay and adjustment bracket (4), double excitation
It tests electric cabinet (8), wherein the testboard bay and adjustment bracket (4) are double-layer scaffold, upper layer bracket upper surface is equipped with casting
Aluminum enclosure, the cast aluminum casings both ends are respectively equipped with autocollimator A (1) and autocollimator B (3), autocollimator A (1) and autocollimatic
A bidirectional electronic level meter (2) is equipped between straight instrument B (3)；It is set on the testboard bay and the lower floor support of adjustment bracket (4)
There is an integration test electric cabinet (8)；The rocket body bracket (7) is equipped with double excitation and is used to group (5), and the double excitation is used to group (5)
Be used to group for two laser to be measured, each laser is used to be respectively equipped with an alignment prism (6) in group, the autocollimator A (1) and
The measurement optical axis of autocollimator B (3) is parallel.
2. a kind of light axis consistency caliberating device as described in claim 1, it is characterised in that: the cast aluminum casings pass through actual effect
Processing and stable processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462999.6A CN106403990B (en) | 2015-07-31 | 2015-07-31 | A kind of light axis consistency caliberating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510462999.6A CN106403990B (en) | 2015-07-31 | 2015-07-31 | A kind of light axis consistency caliberating device |
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| CN106403990A CN106403990A (en) | 2017-02-15 |
| CN106403990B true CN106403990B (en) | 2019-07-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024131B (en) * | 2020-01-03 | 2022-06-17 | 中国船舶重工集团公司第七0七研究所 | Calibration method for horizontal reference mirror |
| CN111693070B (en) * | 2020-06-23 | 2022-03-18 | 安东仪器仪表检测有限公司 | Electronic theodolite auto-collimation error in-situ detection method |
| CN112068322B (en) * | 2020-09-09 | 2022-06-17 | 西安应用光学研究所 | Multi-detector system optical axis parallelism correction method based on laser displacement sensor |
| CN112146681B (en) * | 2020-09-12 | 2023-03-10 | 中国运载火箭技术研究院 | Method and device for testing installation error of inertial group prism and computer storage medium |
| CN114815285B (en) * | 2022-04-29 | 2023-05-12 | 中船重工中南装备有限责任公司 | Optical axis consistency calibration method and calibration system |
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| CN2508221Y (en) * | 2001-11-21 | 2002-08-28 | 中国科学院光电技术研究所 | Vertical angle standard device capable of carrying out arbitrary graduation |
| CN104034349A (en) * | 2014-05-04 | 2014-09-10 | 中国科学院西安光学精密机械研究所 | Absolute horizontal reference precision test system and test method thereof |
| CN104482940A (en) * | 2014-12-05 | 2015-04-01 | 北京兴华机械厂 | Precision test method of two-freedom-degree tracking angle measurement device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3034922C2 (en) * | 1980-09-16 | 1982-11-25 | Siemens AG, 1000 Berlin und 8000 München | Adjustment and testing device for a laser distance measuring system |
| US9239237B2 (en) * | 2013-04-08 | 2016-01-19 | Optikos Corporation | Optical alignment apparatus and methodology for a video based metrology tool |
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2015
- 2015-07-31 CN CN201510462999.6A patent/CN106403990B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2508221Y (en) * | 2001-11-21 | 2002-08-28 | 中国科学院光电技术研究所 | Vertical angle standard device capable of carrying out arbitrary graduation |
| CN104034349A (en) * | 2014-05-04 | 2014-09-10 | 中国科学院西安光学精密机械研究所 | Absolute horizontal reference precision test system and test method thereof |
| CN104482940A (en) * | 2014-12-05 | 2015-04-01 | 北京兴华机械厂 | Precision test method of two-freedom-degree tracking angle measurement device |
Non-Patent Citations (1)
| Title |
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| 火箭炮摇架水平台与基准管轴线一致性光电检测系统研究;刘有贵，等;《兵工学报》;20080229;第29卷(第2期);第232-234页 |
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| CN106403990A (en) | 2017-02-15 |
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