CN101059564A - Testing device and method for measuring laser range finder transmitting and receiving axis matching degree - Google Patents
Testing device and method for measuring laser range finder transmitting and receiving axis matching degree Download PDFInfo
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- CN101059564A CN101059564A CN 200710040397 CN200710040397A CN101059564A CN 101059564 A CN101059564 A CN 101059564A CN 200710040397 CN200710040397 CN 200710040397 CN 200710040397 A CN200710040397 A CN 200710040397A CN 101059564 A CN101059564 A CN 101059564A
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Abstract
The invention discloses a device for testing the registration of receiving shaft and emitting shaft of a laser ranging system, wherein the device comprises a beam folder, a collimator, an analogue echo generator, and a beam angle micro adjuster. The analogue echo generator is composed of a fiber couple, a multimode fiber, a fiber collimator, and an adjustable fiber attenuator. Th method uses the collimator and the beam angle micro adjuster to adjust a reference beam and an analogue echo parallel to accurately mark the initial position of the analogue echo light, adjusts the beam angle micro adjuster, to watch the change of the output signal of the receiving part of the object system to obtain the adjusted angle value, to be compared with the angle value of the initial position to obtain the horizontal and vertical bias of the emitting shaft and the receiving shaft of the laser ranging system. The invention has the advantages that the invention directly uses the laser of the object system to couple, without additional lasers, with simple structure, and combines the beam angle and the output signal of the object system, to improve the reliability and accuracy of the test result.
Description
Technical field
The present invention relates to the performance test of laser distance measuring system, be meant especially the installation of a kind of detection laser range measurement system finish after the proving installation and the method for its emission shaft and receiving axes registration.
Background technology
The basic functional principle of laser distance measuring system is: the distance that light is passed by during obtaining by the mistiming of measuring emission laser and reception return laser beam, and then obtain distance value.
Along with the development of laser technique and sounding technology, the ranging that laser ranging can be measured is also more and more far away.Not only can carry on the aircraft platform, and have more and more countries that it is carried on the spaceborne platform.According to the range data that records, and, just can obtain the information such as shape, surface reflectivity and height of measured object through corresponding processing.
Laser distance measuring system owner's dynamic formula remote sensing instrument, it mainly is made up of laser emitting module, laser pick-off module and data processing module three parts.System need receive the emission echo could realize its function.For the airborne of telemeasurement or satellite borne laser range measurement system, its emission angle is very little usually, has only several milliradians; For avoiding stray light, the acceptance angle of receiving system is also as far as possible little.Therefore, laser distance measuring system is very high to the depth of parallelism requirement of its emission shaft and receiving axes, and the registration of transmitting-receiving axle is one of important key that realizes distance measurement function.
And for the satellite borne laser range measurement system, its working environment is harsh, and the working time is long.And away from ground, in case the emission, can not be real-time it is carried out adjustment.So must test in the face of its serviceability on ground, to determine state of the art, the assurance laser distance measuring system is normally moved when rail.
In the assembling process of system, have the effective registration that method (parallel light tube method) guarantees to receive and dispatch axle of debuging.But after final assembly was finished, system was output as electric signal, can not come the registration of detection system transmitting-receiving axle with original method.And, after finishing, complete machine need carry out environmental simulation test in that ground experiment is indoor for the satellite borne laser range measurement system.Dynamics environments simulation when environmental simulation test comprises satellites transportation, emission such as thermovacuum, cold black, solar irradiation, electromagnetic radiation and vibration, impact and speed.Laser distance measuring system is when experience these whens test, particularly thermovacuum, dynamics environment simulation, and its transmitting-receiving axle registration probably can be affected.So the detection of the coaxial registration in ground after complete machine is finished is very important.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the defective of prior art, and a kind of proving installation and method of high-precision laser distance measuring system transmitting-receiving axle registration is provided.
Proving installation of the present invention, comprise: optical test path and analogue echo generator two parts, optical test path part are that 90 ° first semi-transparent semi-reflecting lens 1 is formed with the angle micro actuator 7 of second semi-transparent semi-reflecting lens 2, the attenuator 8 of adjusting the reference beam parallel light tube 9 parallel with measuring beam, CCD camera 10, decay incident laser energy, adjustment beam direction by two angles.
Beam angle micro actuator 7 is made up of two pairs of wedges, is installed in respectively on two turntables, is used for the level and the vertical adjusting of light beam.
The analogue echo generator is made of the laser-fiber coupler 3, multimode optical fiber 4, adjustable optic fibre attenuator 5 and the fiber optic collimator mirror 6 that become light to connect successively.
Utilize the method for described measurement device laser distance measuring system transmitting-receiving axle registration, comprise the following steps:
§ 1. adjusts light path
The laser that the radiating portion of laser distance measuring system is sent is incident to second semi-transparent semi-reflecting lens 2, by second semi-transparent semi-reflecting lens 2 incident laser is divided into two tunnel: one road transmitted light and enters attenuator 8, parallel light tube 9 and CCD camera 10 successively as reference light; Another road reflected light enters the analogue echo generator of the fiber coupler 3, multimode optical fiber 4, adjustable optic fibre attenuator 5 and fiber optic collimator mirror 6 formations that become light to connect successively, what fiber optic collimator mirror 6 was exported is a branch of analogue echo laser, and this analogue echo laser reflects, enters attenuator 8, parallel light tube 9 and CCD camera 10 through 7 transmissions of angle micro actuator, first semi-transparent semi-reflecting lens 1 and second semi-transparent semi-reflecting lens 2 successively; Adjusting angle micro actuator 7 is observed the CCD camera, and overlapping on focal surface of collimator tube when reference light and analogue echo laser is same point, shows that then analogue echo laser is parallel with reference light, and writes down the initial scale value of beam angle micro actuator 7.Analogue echo laser directly enters the receiving unit of laser distance measuring system through the transmitted light of first semi-transparent semi-reflecting lens 1.
The transmitting-receiving axle registration of 2. pairs of laser distance measuring system of § is tested
Regulate fibre optic attenuator 5, with the analogue echo energy attenuation to laser distance measuring system receiving sensitivity size.Regulate beam angle micro actuator 7, to finish of the scanning of echo laser in level and vertical direction.According to the scale on the beam angle micro actuator 7 can the nominal light beam steering direction and size.Observe the output situation of system under test (SUT) simultaneously.Record measured laser range measurement system is just during no-output, the reading of beam angle micro actuator 7.The recording level direction from no signal to having again to there not being two readings, vertical direction from no signal to having again to there not being two readings.Calculate mean value respectively, this mean value is compared with the initial scale value of beam angle micro actuator 7 emission shaft that just can draw laser distance measuring system and receiving axes departing from the horizontal and vertical directions at vertical direction and two readings of horizontal direction.
Advantage of the present invention is: proving installation is simple in structure, the precision height;
Beam angle and system under test (SUT) output signal are connected, and test result has more reliability;
Utilize parallel light tube and CCD camera that reference light and analogue echo laser level is capable, realized the accurate demarcation of analogue echo initial position;
The direction that adopts two wedges to change and demarcate light beam, and can control wedge light beam is finely tuned in the horizontal and vertical directions;
Adopt fiber coupler, multimode optical fiber, optical fiber collimator and adjustable optic fibre attenuator to constitute the analogue echoes generator, directly adopt system under test (SUT) laser to be coupled, need not other laser instrument, cost is low, and is simple in structure.And laser is broadened through the optical fiber afterpulse, has better simulated actual ghosts.Adjustable attenuator is placed between multimode optical fiber and the light collimating mirror, can not change the adjustable size of finishing energy under the echo direction.
Description of drawings
Fig. 1 is a measurement mechanism synoptic diagram of the present invention;
Fig. 2 is the synoptic diagram that test macro docks with laser distance measuring system.
Embodiment
Providing better embodiment of the present invention according to Fig. 1, Fig. 2 below also elaborates:
Fig. 1 is a proving installation synoptic diagram of the present invention, is made up of light beam deflector, parallel light tube 9, camera 10, analogue echo generator and beam angle micro actuator 7.The light beam mirror of turning back is that 90 ° first semi-transparent semi-reflecting lens 1 and second semi-transparent semi-reflecting lens 2 constitutes by angle.Laser-fiber coupler 3, multimode optical fiber 4, adjustable optic fibre attenuator 5, fiber optic collimator mirror 6 common formation analogue echo generators.Optical fiber 4 adopts the multimode optical fiber of 62.5um/125um, and length can be regulated according to the needs of tested instrument, and the length in the present embodiment is 5km; Adjustable optic fibre attenuator 5 adopts the FC-flange-type.Beam angle micro actuator 7 is made up of two pairs of wedges, is installed in respectively on two turntables, is used for the level and the vertical adjusting of light beam.Attenuator 8 is a neutral density filter, does the beam energy decay and uses.Parallel light tube 9 and camera 10 are put for the leveling luggage.
By described method the twin shaft registration of present embodiment laser distance measuring system is tested, precision can reach 15 seconds.
Claims (2)
1. a Laser Measurement range measurement system is received and dispatched the proving installation of axle registration, comprise: optical test path and analogue echo generator two parts, optical test path part are that 90 ° first semi-transparent semi-reflecting lens (1) is formed with the angle micro actuator (7) of second semi-transparent semi-reflecting lens (2), the attenuator (8) of adjusting the reference beam parallel light tube (9) parallel with measuring beam, CCD camera (10), decay incident laser energy, adjustment beam direction by two angles;
Said beam angle micro actuator (7) is made up of two pairs of wedges, is installed in respectively on two turntables, is used for the level and the vertical adjusting of light beam;
The analogue echo generator is made of the laser-fiber coupler (3) that becomes light to connect successively, multimode optical fiber (4), adjustable optic fibre attenuator (5) and fiber optic collimator mirror (6).
2. utilize the method for described measurement device laser distance measuring system transmitting-receiving axle registration, comprise the following steps:
§ A. light path is adjusted
The laser that the radiating portion of laser distance measuring system is sent is incident to second semi-transparent semi-reflecting lens (2), by second semi-transparent semi-reflecting lens (2) incident laser is divided into two tunnel: one road transmitted light and enters attenuator (8), parallel light tube (9) successively, focuses on the CCD camera (10) as reference light; Another road reflected light enters the analogue echo generator of the fiber coupler (3), multimode optical fiber (4), adjustable optic fibre attenuator (5) and fiber optic collimator mirror (6) formation that become light to connect successively, what fiber optic collimator mirror (6) was exported is a branch of analogue echo laser, and this analogue echo laser reflects, enters attenuator (8), parallel light tube (9), focuses on the CCD camera 10 through angle micro actuator (7) fine setting transmission, first semi-transparent semi-reflecting lens (1) and second semi-transparent semi-reflecting lens (2) successively; Adjusting angle micro actuator (7) is observed the CCD camera, and overlapping on focal surface of collimator tube when reference light and analogue echo laser is same point, shows that then analogue echo laser is parallel with reference light, and writes down the initial scale value of beam angle micro actuator (7); Analogue echo laser directly enters the receiving unit of laser distance measuring system through the transmitted light of first semi-transparent semi-reflecting lens (1);
§ B. tests the transmitting-receiving axle registration of laser distance measuring system
Regulate fibre optic attenuator (5), with the analogue echo energy attenuation to laser distance measuring system receiving sensitivity size; Regulate beam angle micro actuator (7), to finish of the scanning of echo laser in level and vertical direction; According to the scale on the beam angle micro actuator (7) can the nominal light beam steering direction and size; Observe the output situation of system under test (SUT) simultaneously, record measured laser range measurement system is just during no-output, the reading of beam angle micro actuator (7), recording level direction two readings when arriving no-output again that grow out of nothing, vertical direction two readings when arriving no-output again that grow out of nothing, calculate mean value respectively, this mean value is compared with the initial scale value of beam angle micro actuator (7) emission shaft that just can draw laser distance measuring system and receiving axes departing from the horizontal and vertical directions at vertical direction and two readings of horizontal direction.
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| CN200710040397A CN101059564B (en) | 2007-05-08 | 2007-05-08 | Testing device and method for measuring laser range finder transmitting and receiving axis matching degree |
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| CN200710040397A CN101059564B (en) | 2007-05-08 | 2007-05-08 | Testing device and method for measuring laser range finder transmitting and receiving axis matching degree |
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| CN101059564B CN101059564B (en) | 2010-05-19 |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793508A (en) * | 2010-03-23 | 2010-08-04 | 长春理工大学 | Device for measuring parallelism of transmission shaft and receiving shaft of laser distance measuring equipment based on focal plane scanning |
| CN102401647A (en) * | 2010-09-07 | 2012-04-04 | 原相科技股份有限公司 | Optical ranging system |
| CN102436043A (en) * | 2011-12-23 | 2012-05-02 | 中国科学院长春光学精密机械与物理研究所 | Electrooptical countermeasure infield simulation-based low level laser transformation system |
| CN103644899A (en) * | 2013-12-06 | 2014-03-19 | 苏州迅威光电科技有限公司 | Laser centering module for total station |
| CN103698768A (en) * | 2014-01-21 | 2014-04-02 | 杭州先临三维科技股份有限公司 | Distance measuring device and distance measurement method of point-source hologram |
| TWI471581B (en) * | 2011-12-09 | 2015-02-01 | Asia Optical Co Inc | Distance measuring device |
| CN105137415A (en) * | 2015-05-25 | 2015-12-09 | 北京空间机电研究所 | Device and method for laser rangefinder receiving field-of-view calibration and optical axis parallelism measurement |
| CN105445941A (en) * | 2015-12-18 | 2016-03-30 | 南京雨花肿瘤防治研究所 | High power laser attenuator |
| CN106767907A (en) * | 2016-11-29 | 2017-05-31 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and apparatus for evaluating and method |
| CN107727368A (en) * | 2017-10-13 | 2018-02-23 | 中国科学院上海技术物理研究所 | A kind of device and method for demarcating focal surface of collimator tube position |
| CN108226946A (en) * | 2018-01-23 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | Laser range finder and its signal element pedestal |
| CN108572355A (en) * | 2018-04-04 | 2018-09-25 | 南京理工大学 | A kind of laser echo simulation device |
| CN108693516A (en) * | 2018-08-20 | 2018-10-23 | 中国科学院上海技术物理研究所 | A kind of device and method of quick measurement laser ranging system performance |
| CN109239722A (en) * | 2017-07-10 | 2019-01-18 | 日立乐金光科技株式会社 | Distnace determination device and its angle adjusting method |
| CN110806573A (en) * | 2019-12-13 | 2020-02-18 | 中国科学院长春光学精密机械与物理研究所 | Indoor distance measurement precision real-time measurement device for laser distance measuring machine |
| CN110907920A (en) * | 2018-09-18 | 2020-03-24 | 中国北方车辆研究所 | Indoor passive laser ranging simulation device and ranging capability detection method |
| CN114812333A (en) * | 2022-05-23 | 2022-07-29 | 高密市勇利机械有限公司 | V-groove inspection tool of movable workbench and inspection method thereof |
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| CN2667481Y (en) * | 2003-12-29 | 2004-12-29 | 中国人民解放军总装备部军械技术研究所 | Pulse laser distance-measuring equipment optical axis parallel automatic detecting apparatus |
| CN100334463C (en) * | 2004-06-30 | 2007-08-29 | 中国科学院上海技术物理研究所 | Optical calibrating apparatus and method of laser ranging system |
| EP1705497B1 (en) * | 2005-03-21 | 2019-06-26 | Saab Ab | Efficient and reliable testing of laser rangefinders |
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- 2007-05-08 CN CN200710040397A patent/CN101059564B/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793508A (en) * | 2010-03-23 | 2010-08-04 | 长春理工大学 | Device for measuring parallelism of transmission shaft and receiving shaft of laser distance measuring equipment based on focal plane scanning |
| CN102401647A (en) * | 2010-09-07 | 2012-04-04 | 原相科技股份有限公司 | Optical ranging system |
| TWI471581B (en) * | 2011-12-09 | 2015-02-01 | Asia Optical Co Inc | Distance measuring device |
| CN102436043A (en) * | 2011-12-23 | 2012-05-02 | 中国科学院长春光学精密机械与物理研究所 | Electrooptical countermeasure infield simulation-based low level laser transformation system |
| CN103644899A (en) * | 2013-12-06 | 2014-03-19 | 苏州迅威光电科技有限公司 | Laser centering module for total station |
| CN103698768B (en) * | 2014-01-21 | 2016-05-25 | 杭州先临三维科技股份有限公司 | Point-source hologram range unit and distance-finding method |
| CN103698768A (en) * | 2014-01-21 | 2014-04-02 | 杭州先临三维科技股份有限公司 | Distance measuring device and distance measurement method of point-source hologram |
| CN105137415A (en) * | 2015-05-25 | 2015-12-09 | 北京空间机电研究所 | Device and method for laser rangefinder receiving field-of-view calibration and optical axis parallelism measurement |
| CN105137415B (en) * | 2015-05-25 | 2017-08-29 | 北京空间机电研究所 | The apparatus and method that laser range finder field of view of receiver is demarcated and parallelism of optical axis is measured |
| CN105445941A (en) * | 2015-12-18 | 2016-03-30 | 南京雨花肿瘤防治研究所 | High power laser attenuator |
| CN105445941B (en) * | 2015-12-18 | 2018-01-23 | 南京雨花肿瘤防治研究所 | A kind of high-power laser attenuator |
| CN106767907A (en) * | 2016-11-29 | 2017-05-31 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and apparatus for evaluating and method |
| CN106767907B (en) * | 2016-11-29 | 2019-11-08 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and assessment device and method |
| CN109239722A (en) * | 2017-07-10 | 2019-01-18 | 日立乐金光科技株式会社 | Distnace determination device and its angle adjusting method |
| CN107727368A (en) * | 2017-10-13 | 2018-02-23 | 中国科学院上海技术物理研究所 | A kind of device and method for demarcating focal surface of collimator tube position |
| CN107727368B (en) * | 2017-10-13 | 2023-07-04 | 中国科学院上海技术物理研究所 | Device and method for calibrating focal plane position of collimator |
| CN108226946A (en) * | 2018-01-23 | 2018-06-29 | 中国航空工业集团公司洛阳电光设备研究所 | Laser range finder and its signal element pedestal |
| CN108572355A (en) * | 2018-04-04 | 2018-09-25 | 南京理工大学 | A kind of laser echo simulation device |
| CN108693516A (en) * | 2018-08-20 | 2018-10-23 | 中国科学院上海技术物理研究所 | A kind of device and method of quick measurement laser ranging system performance |
| CN108693516B (en) * | 2018-08-20 | 2024-02-20 | 中国科学院上海技术物理研究所 | Device and method for rapidly measuring performance of laser ranging system |
| CN110907920A (en) * | 2018-09-18 | 2020-03-24 | 中国北方车辆研究所 | Indoor passive laser ranging simulation device and ranging capability detection method |
| CN110907920B (en) * | 2018-09-18 | 2023-10-27 | 中国北方车辆研究所 | Indoor passive laser ranging simulation device and ranging capability detection method |
| CN110806573A (en) * | 2019-12-13 | 2020-02-18 | 中国科学院长春光学精密机械与物理研究所 | Indoor distance measurement precision real-time measurement device for laser distance measuring machine |
| CN114812333A (en) * | 2022-05-23 | 2022-07-29 | 高密市勇利机械有限公司 | V-groove inspection tool of movable workbench and inspection method thereof |
| CN114812333B (en) * | 2022-05-23 | 2023-09-22 | 高密市勇利机械有限公司 | Movable workbench V-groove inspection tool and inspection method thereof |
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