CN106403990A - Calibration apparatus for consistency of optical axes - Google Patents
Calibration apparatus for consistency of optical axes Download PDFInfo
- Publication number
- CN106403990A CN106403990A CN201510462999.6A CN201510462999A CN106403990A CN 106403990 A CN106403990 A CN 106403990A CN 201510462999 A CN201510462999 A CN 201510462999A CN 106403990 A CN106403990 A CN 106403990A
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- autocollimator
- support
- consistency
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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 provides a calibration apparatus for the consistency of optical axes, belonging to the field of photoelectric autocollimation non-contact angle measurement. The calibration apparatus employs a rapid and convenient measurement optical path to accomplish calibration of the consistency of the optical axes of emergent rays of to-be-detected alignment prisms. The calibration apparatus for the consistency of the optical axes comprises an autocollimator A, a bidirectional electrolevel, an autocollimator B, a test-bench and adjustment support, double laser inertial units, alignment prisms, an arrow body support and an integrated testing electric cabinet, wherein the test-bench and adjustment support is a double-layer support; the upper surface of the upper-layer support of the test-bench and adjustment support is provided with an aluminum cast shell; two ends of the aluminum cast shell are respectively provided with the autocollimator A and the autocollimator B; the bidirectional electrolevel is arranged between the autocollimator A and the autocollimator B; the lower-layer support of the test-bench and adjustment support is provided with the integrated testing electric cabinet; the arrow body support is provided with the double laser inertial units; the double laser inertial units are two to-be-detected laser inertial units; and each laser inertial unit is provided with one alignment prism.
Description
Technical field
The invention belongs to photoelectric auto-collimation noncontact angle measurement field is and in particular to a kind of light axis consistency is demarcated
Device.
Background technology
Navigation system on carrier rocket is to improve navigation accuracy generally to carry out from the strapdown inertial measurement unit that cover more at present
Redundancy is guided.The initial peace between two even more strapdown inertial measurement unit of Accurate Calibration is needed before rocket flight
Dress azimuth deviation.The alignment prism representing its navigational coordinate system is provided with strapdown inertial measurement unit, is set by outside
The standby orientation concordance to alignment prism emergent light axis carries out demarcation and can complete to used group of initial installation position
The demarcation of deviation.This calibration value is finally bound to carry in arrow and participates in navigation calculation in computer.
According to conventional method, the conforming demarcation of alignment prism emergent light axis uses at least two theodolite groups
The mode of net indirectly obtains.Concrete grammar is that wherein two theodolites are each collimated with an alignment prism,
Then mutually collimation, to taking aim at, obtains two rotational angle theta again1With 360 ° of-θ2, then two alignment prisms are initial
The deviation delta installed is 180 °-(θ1+360°-θ2).
Measurement time error item is a lot of in this way, if test site sighting condition is not good, or even needs
The theodolite more crossed carrys out networking measurement.Main error item includes the instrumental error of itself of multiple stage theodolite, warp
Latitude instrument, the error of focusing of every instrument operator, operates by mistake to line error etc. to taking aim at error to when taking aim at
Difference, the quantity of theodolite is more, and error is bigger.These errors are by 1：1 is brought directly in measurement result,
Have a strong impact on the accuracy of measurement result.
This caliberating device can not only meet the accurate measurement of equipment under test initial attitude, and can be complete
The drawbacks of overcome said method to exist, and affected very little by measurement site environment.
Content of the invention
The purpose of the present invention is, not enough for prior art, provides a kind of quick, easily optical path,
Complete the light axis consistency caliberating device of tested 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 indicator, auto-collimation
Instrument B, testboard bay and adjustment support, double excitation are used to group, alignment prism, rocket body support and integration test
Electric cabinet, wherein said testboard bay and adjustment support are double-layer scaffold, and upper layer bracket upper surface is provided with
Cast aluminum casings, described cast aluminum casings are respectively arranged at two ends with autocollimator A and autocollimator B, autocollimator
It is provided with a bidirectional electronic level indicator between A and autocollimator B；Described testboard bay and adjustment support
Lower floor support is provided with an integration test electric cabinet；Described rocket body support is provided with double excitation and is used to group, institute
State double excitation to be used to organize is that two laser to be measured are used to group, and each laser is used in group be respectively equipped with an aiming rib
Mirror.
Described cast aluminum casings are processed and stabilized treatment through actual effect.
Described autocollimator A is parallel with the measurement optical axis of autocollimator B.
The invention has the beneficial effects as follows：
1. the present invention is demarcated to the orientation values of alignment prism using CCD photoelectric auto-collimator, CCD light
Electric autocollimator can effectively avoid vertical pivot leveling error and the people existing during multiple stage theodolite networking measurement
Work error of focusing, to line collimating error etc..
2. because two CCD photoelectric auto-collimators are sampled to return picture in the presence of control system simultaneously,
Process, it is to avoid due to collimating the error that the disunity in moment causes during artificial operation simultaneously.Control simultaneously
The automatic calculating of system also greatly improves work efficiency, reduces the labor intensity of operator.
Brief description
Fig. 1 is a kind of light axis consistency caliberating device structural representation；
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 indicator；3. autocollimatic value instrument B；4. testboard bay and
Adjustment support；5. double excitation is used to group；6. alignment prism；7. rocket body support；8. integration test electronic box；
Specific embodiment
With embodiment, one kind proposed by the present invention is further introduced below in conjunction with the accompanying drawings：
A kind of light axis consistency caliberating device it is characterised in that：Including autocollimator A1, bidirectional electronic water
Level 2, autocollimator B3, testboard bay and adjustment support 4, double excitation be used to group 5, alignment prism 6,
Rocket body support 7 and integration test electric cabinet 8, wherein said testboard bay and adjustment support 4 are double-deck
Frame, upper layer bracket upper surface is provided with cast aluminum casings, and described cast aluminum casings are respectively arranged at two ends with autocollimator
A1 and autocollimator B3, is provided with a bidirectional electronic level between autocollimator A1 and autocollimator B3
Instrument 2；The lower floor support of described testboard bay and adjustment support 4 is provided with an integration test electric cabinet 8；
Described rocket body support 7 is provided with double excitation and is used to group 5, and it is two laser to be measured that described double excitation is used to organize 5
Used group, each laser is used to be respectively equipped with an alignment prism 6 in group.
Described cast aluminum casings are processed and stabilized treatment through actual effect.
Described 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 of alignment prism.The zero-bit optical axis of two autocollimators debugged into when dispatching from the factory parallel,
According to the difference that two autocollimators are directed at reading after alignment prisms can calculate two alignment prism normals it
Between gun parallax.
In order to avoid the impact that horizontal error does not cause to orientation of prism crest line, two CCD in measurement apparatus
Photoelectric auto-collimator should keep measurement under horizontality as far as possible, will demarcate dress using bidirectional electronic level indicator
Put accurate leveling and real-time monitoring, real-Time Compensation.
As shown in Figure 1, CCD photoelectric auto-collimator is used for measuring the orientation values of alignment prism outgoing normal,
And the advantages of have automatically to line, automatic data collection, the automatic business processing of automatic reading data, simultaneously two
Individual CCD photoelectric auto-collimator, in the presence of control system, resets simultaneously, gathers simultaneously, simultaneously reading.
Efficiently avoid theodolite itself error existing during artificial operation theodolite and artificial operating error.
Two CCD autocollimators are arranged on the housing of cast aluminium, and cast aluminum casings are processed and stability through actual effect
Process, can effectively ensure that the deformation of high/low temperature condition lower substrate is minimum, and not cause installed two
The change of mutual alignment between CCD autocollimator.
After two CCD photoelectric auto-collimators are arranged on housing, by the method for precise finiss by the measurement of the two
Optical axis is adjusted to parallel.Can be calibrated according to the difference that two autocollimators are directed at reading after alignment prism
The conformity error of two alignment prism emergent light axis.
It is flat that the installation base surface of bidirectional electronic level indicator and two CCD photoelectric auto-collimator emergent light axis are located
Face is parallel, can show the horizontality of caliberating device, the real-time monitoring for calibration process and reality in real time
When compensate.
As shown in Figure 3, in reference bi electrolevel reading, make light axis consistency caliberating device with flat
State of taking aim at is collimated with prism to be calibrated.
Before to strapdown inertial measurement unit alignment prism emergent light axis consistency calibration, each used group of aiming should be calibrated first
The alignment error of the relatively used group coordinate axess of prism, i.e. α, β value；Wherein α is that prism crest line is sat with used group
Around the not parallel error of X-direction, β is that prism crest line organizes coordinate axess around Y direction not with used to parameter
Parallel errors.Wherein main part is used to group and the α of backup used group prism, β value are respectively αMain、βMain, αStandby、
βStandby, definition is azimuth around the angle that X-axis rotates.
In formal calibration process, after collimating with alignment prism, reading is respectively for two CCD photoelectric auto-collimators
It is A and B, then back up the gun parallax that used group prism is used to organize prism with respect to main part
Δ=(B- αStandby)-(A- αMain).
Claims (3)
1. a kind of light axis consistency caliberating device it is characterised in that：Including autocollimator A (1),
Bidirectional electronic level indicator (2), autocollimator B (3), testboard bay and adjustment support (4),
Double excitation is used to group (5), alignment prism (6), rocket body support (7) and integration test electric cabinet
(8), wherein said testboard bay and adjustment support (4) are double-layer scaffold, in upper layer bracket
Surface is provided with cast aluminum casings, and described cast aluminum casings are respectively arranged at two ends with autocollimator A (1)
With autocollimator B (3), between autocollimator A (1) and autocollimator B (3), it is provided with one
Individual bidirectional electronic level indicator (2)；Described testboard bay and the lower floor support of adjustment support (4)
It is provided with an integration test electric cabinet (8)；Described rocket body support (7) is provided with double excitation
Used group (5), it is that to be measured two laser is used to group, each laser that described double excitation is used to group (5)
One alignment prism (6) is respectively equipped with used group.
2. as claimed in claim 1 a kind of light axis consistency caliberating device it is characterised in that：
Described cast aluminum casings are processed and stabilized treatment through actual effect.
3. as claimed in claim 1 a kind of light axis consistency caliberating device it is characterised in that：
Described autocollimator A (1) is parallel with the measurement optical axis of autocollimator B (3).
Priority Applications (1)
| 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 |
|---|---|---|---|
| CN201510462999.6A CN106403990B (en) | 2015-07-31 | 2015-07-31 | A kind of light axis consistency caliberating device |
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| CN106403990A true CN106403990A (en) | 2017-02-15 |
| CN106403990B CN106403990B (en) | 2019-07-12 |
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| CN201510462999.6A Active CN106403990B (en) | 2015-07-31 | 2015-07-31 | A kind of light axis consistency caliberating device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024131A (en) * | 2020-01-03 | 2020-04-17 | 中国船舶重工集团公司第七0七研究所 | Calibration method for horizontal reference mirror |
| CN111693070A (en) * | 2020-06-23 | 2020-09-22 | 安东仪器仪表检测有限公司 | Electronic theodolite auto-collimation error in-situ detection method |
| CN112068322A (en) * | 2020-09-09 | 2020-12-11 | 西安应用光学研究所 | Multi-detector system optical axis parallelism correction method based on laser displacement sensor |
| CN112146681A (en) * | 2020-09-12 | 2020-12-29 | 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 |
| CN113295189A (en) * | 2021-06-08 | 2021-08-24 | 江苏北方湖光光电有限公司 | Calibration device for consistency of strapdown inertial navigation shaft and autocollimator shaft in photoelectric boresight |
| CN114815285A (en) * | 2022-04-29 | 2022-07-29 | 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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| US20140300751A1 (en) * | 2013-04-08 | 2014-10-09 | Optikos Corporation | Optical alignment apparatus and methodology for a video based metrology tool |
| 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 |
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| US4432640A (en) * | 1980-09-16 | 1984-02-21 | Siemens Aktiengesellschaft | Adjustment and testing device for a laser ranging system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024131A (en) * | 2020-01-03 | 2020-04-17 | 中国船舶重工集团公司第七0七研究所 | Calibration method for horizontal reference mirror |
| 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 |
| CN111693070A (en) * | 2020-06-23 | 2020-09-22 | 安东仪器仪表检测有限公司 | Electronic theodolite auto-collimation error in-situ detection method |
| CN112068322A (en) * | 2020-09-09 | 2020-12-11 | 西安应用光学研究所 | Multi-detector system optical axis parallelism correction method based on laser displacement sensor |
| 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 |
| CN112146681A (en) * | 2020-09-12 | 2020-12-29 | 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 |
| 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 |
| CN113295189A (en) * | 2021-06-08 | 2021-08-24 | 江苏北方湖光光电有限公司 | Calibration device for consistency of strapdown inertial navigation shaft and autocollimator shaft in photoelectric boresight |
| CN114815285A (en) * | 2022-04-29 | 2022-07-29 | 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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| CN106403990B (en) | 2019-07-12 |
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