CN102661738B - Aim at inertia system meridian orienting device - Google Patents
Aim at inertia system meridian orienting device Download PDFInfo
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- CN102661738B CN102661738B CN201210161458.6A CN201210161458A CN102661738B CN 102661738 B CN102661738 B CN 102661738B CN 201210161458 A CN201210161458 A CN 201210161458A CN 102661738 B CN102661738 B CN 102661738B
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Abstract
The present invention is to aim at inertia system meridian orienting device, and the device includes prism assemblies (2) vertical shaft series (5), finder telescope (1), spirit level (2), micro-adjusting mechanism (4), locking mechanism (3), orientation arrestment mechanism (6), leveling base (8), leveling spiral (9), casing (10).The device is the simulator for aiming at inertia system azimuth prism, and function and precision self-test are carried out for establishing the reference orientation in laboratory, and to light sighting system.The device is used as meridian orientation benchmark by determining the normal direction of prism assemblies, and the normal direction according to prism assemblies tilts to the rib ridge of prism carries out accurate measurement, and ensures rib ridge auto-collimation azimuthal error within allowed band.Possess the adjustment function of prism rib ridge direction not horizontal, the adjustment function of prism chord plane non-perpendicularity, orientation rotation regulatory function, the function with impact resistance and the local stress deformation of control.
Description
■ technical fields
It is particularly a kind of to aim at inertia system meridian orienting device the present invention relates to a kind of orienting device.
■ background technologies
Existing several orienting devices are described below.
GPS radars meridian orientation can accurately determine position coordinate and linear aspect, for determine gyroscope constant,
Real north of equipment etc. is closed in the position of radar calibration target and demarcation certainly.Utilize gps carrier phase observations technical limit spacing baseline
Azimuth, azimuthal orientation field can be established.Precision analysis and practical application show that the azimuthal orientation field can meet precision needs,
But system complex, cost are higher.
Electronic compass is also a kind of orienting device.When user's transfixion or low speed are advanced, electronics sieve can be utilized
The meridian angle that disk is obtained facing or advanced, similar compass function.But because electronic compass is easily by external electromagnetic field
Interference and influence the degree of accuracy, therefore need to be used cooperatively with GPS.If the translational speed of user once exceedes set speed circle
Limit value, the meridian angle calculated by GPS will be switched to immediately and is defined.When the translational speed of user is less than default
Speed envelope value and after the time is continued above default event horizon value, GPS meridian angle computing function can just be switched
Guided into by electronic compass.In addition, after GPS signals interrupt, electronic compass can be also switched to.
The measuring method such as hour angle method and height method also has meridian measurement function, there is provided meridian orientation survey calibration etc.
Meridian demarcation is oriented, this method substantially meets the meridian focal need of engineering construction, but orientation accuracy is relatively low.
In summary, traditional orientation method can provide orientating function to a certain extent, but each method has it certainly
The deficiency of body, system architecture is larger, higher to the operating environment requirements of orientation system easily by electromagnetic interference, and cost is higher.
The ■ content of the invention：
The present invention provides a kind of aiming inertia system meridian orienting device, as aiming inertia system meridian prism
Simulator, function and precision are carried out for establishing the aiming meridianal orientation of inertia system in laboratory, and to light sighting system
Self-test.
Aim at inertia system meridian orienting device, including vertical shaft series, finder telescope, spirit level, micro-adjusting mechanism, lock
Determine mechanism, in addition to prism assemblies, leveling spiral, meridian arrestment mechanism, base, casing.
The present invention is realized by following technical scheme：1. the prism assemblies in meridian orienting device use secondary reflection
Right-angle prism.As long as incident ray is in the main cross section vertical with two reflectings surface friendship rib, the reflection light after secondary reflection
It will be parallel to each other with incident ray in space；When incident ray changes position in main cross section on height direction, will not change
Become the collimation of emergent ray and incident ray；When incident ray and prism mutually change position on the meridian, emergent light
Line is remained in the plane that incident ray and friendship rib define.By the device one space problem can be changed into one
Incident ray hands over the plane problem defined in rib in plane to handle with prism assemblies, and this point can be brought in actual use
Many convenient places.2. the precision of vertical shaft series directly affects the orientation survey precision of the device, half kinematics formula knot is devised
Structure, half campaign-styled precision bearing system are readily obtained higher precision in putting under the conditions of identical parameters than normal formula precision bearing system.Half
Campaign-styled precision bearing system belongs to low speed precision sliding bearing shafting, and its feature is as follows：Replace a little connecing with small area or linear contact lay
Tactile structure, the structure are applied to Smaller load, and speed of related movement is low, and operating accuracy is required in high structure；Bearing holder (housing, cover) is fixed
Motionless, axle rotation, the conical surface of axle sleeve and the cylindrical of axle have a circle precise ball between plane, and conical surface ball bearing both had
There is taking the weight of, there is self-centering again；Because using more than ten of accurate steel ball supporting, supporting-point is rolling
Dynamic friction, therefore moment of friction is small when rotating, starts flexible, wears small, long lifespan, while to temperature-insensitive, during low temperature not
Cause that stuck phenomenon occurs.
The purpose of the present invention is to be used as meridian orientation by determining the normal direction of prism assemblies, according to prism assemblies
Normal direction tilts to the rib ridge of prism and carries out accurate measurement, and ensures rib ridge auto-collimation azimuthal error within allowed band.
Possesses the adjustment function of prism rib ridge direction not horizontal, the adjustment function of prism chord plane non-perpendicularity, orientation rotation regulation work(
Can, there is impact resistance and control the function of local stress deformation.
Beneficial effect
It is of the present invention to be used to aim at inertia system meridian orienting device, it can play and aim at inertia system azimuth prism etc.
The effect of device is imitated, and for carrying out function and accuracy test and demarcation to light sight device.The device can overcome conventional meridian
The deficiency of line orienting device, system architecture is compact, easy to adjust flexible, is not easy by electromagnetic interference, to the building ring of orientation system
Border requires relatively low, and cost is relatively low.
■ is illustrated
Fig. 1 is meridian orienting device external form figure
Fig. 2 is the azimuth prism corner reflection principle schematic based on the present invention
1- finder telescope 2- spirit level 3- locking mechanism 4- micro-adjusting mechanism 5- vertical shaft series 6- orientation arrestment mechanism
7- prism assemblies 8- leveling base 9- leveling spiral 10- casings
■ embodiments
The present invention is described further below in conjunction with the accompanying drawings：
As shown in figure 1, finder telescope 1 is arranged in the normal direction of prism assemblies 7, the rib ridge of its optical axis and prism into
Orthogonal, its function is to be easy to visual field is relatively crude to take aim in remote photoelectric collimation testing.Prism assemblies 7 are fixed on can be around vertical axis
It is that its end face is equipped with plane mirror, and the azimuth of prism assemblies can be monitored on the prism table of rotation.Prism group
Part, finder telescope are fixed on vertical shaft series, and can be rotated around the rotating shaft of vertical shaft series.Vertical shaft series 5 are felt relieved using pressure
Half campaign-styled shafting of sphere guide rail ball bearing, it is high to orient and put middle precision, to temperature-insensitive, is not easy stuck, can be achieved
The orientation revolution of 360 ° of scopes of prism assemblies 7, and design with ± 1.5 ° of azimuth vernier adjusting function.Provided with orientation arrestment mechanism
6th, micro-adjusting mechanism 4 and optional position locking mechanism 3, the function of orientation arrestment mechanism 6 are to prevent vertical shaft series 5 from rotating, realization side
Position positioning, the function of micro-adjusting mechanism 4 are to finely tune the orientation of prism, and the function of locking mechanism 3 is to prevent prism from walking about.Leveling
Base 8 and leveling spiral 9 are used to support and leveling whole device, the purpose of leveling make vertical shaft series 5 be located in vertical guide.Leveling
There are three foot screws on base 8, for flattening instrument.Be connected a vertical pivot axle sleeve and leveling spiral 9 on base.Spirit level 2 is aobvious
Show the accurate leveling precision of the device, leveling error is not more than 1/2 lattice value.Casing 10 shields to whole device.The dress
It is on 250C channel steel upright post lateral surface that bottom set seat, which is arranged on specification in laboratory, can be adjusted to the position needed on column, is had
There is the reliable and stable mode that is connected.It can be fixed on special tripod and use in outdoor.
The core of the device is prism assemblies 7, and prism assemblies 7 use secondary reflection right-angle prism.Not make prism
Reflecting layer exposure in atmosphere, to incident ray use interior reflective surface reflection form, as shown in Figure 2：ABCD is reflecting surface,
X, y, z is rectangular coordinate system, and o is the origin of coordinates.According to catoptric imaging property, two reflectings surface of the light through prism reflect successively
Afterwards, the angle that reflection light deflects relative to incident ray is two times of two reflecting surface angles, when two reflecting surface angles are 90 °
When, reflection light deflects 180 ° of angle relative to incident ray.Exactly secondary reflection right angle is used according to this characteristic, prism
Prism, its working face are two planes of refraction and a reflecting surface, are main cross section perpendicular to the section of rib.As long as incident ray is in
In the main cross section vertical with two reflectings surface friendship ribs, the light after secondary reflection will be parallel to each other with incident ray in space；
When height direction changes position to incident ray in main cross section, the collimation of emergent ray will not changed；When incident ray and
When prism mutually changes position in main cross section (incident ray and friendship rib define plane), emergent ray remains at same plane
It is interior, in the azimuth direction in accordance with reflection law；When incident ray (collimation optical axis) has an inclination angle λ relative to directional plane,
Emergent ray can also deviate incident ray and produce meridian error angle λ '.
Claims (1)
1. aim at inertia system meridian orienting device, the device by vertical shaft series, finder telescope, spirit level, micro-adjusting mechanism,
Locking mechanism, orientation arrestment mechanism, leveling base, leveling spiral and casing composition, vertical shaft series are located at leveling base and casing
Top, around leveling base and the main shaft gyration of box house, leveling spiral is arranged on the bottom of levelling gear, for according to level
The instruction of device integrally carries out leveling to device, and orientation arrestment mechanism, micro-adjusting mechanism are arranged in casing, for vertical shaft series and
Its part installed above carries out azimuth caging and fine setting, it is characterised in that：Described device also includes prism assemblies, prism group
Part, finder telescope are fixed on vertical shaft series；Prism assemblies are fixed on prism table, and its end face is equipped with plane mirror, energy
Enough azimuths to prism assemblies are monitored；Finder telescope is arranged in the normal direction of prism assemblies, its optical axis and rib
The rib ridge of mirror is orthogonal, and its function is to be easy to visual field is relatively crude to take aim in remote photoelectric collimation testing；The device can conduct
The simulator of EOTS azimuth prism, for carrying out function and precision self-test and reference orientation to EOTS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210161458.6A CN102661738B (en) | 2012-05-23 | 2012-05-23 | Aim at inertia system meridian orienting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210161458.6A CN102661738B (en) | 2012-05-23 | 2012-05-23 | Aim at inertia system meridian orienting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102661738A CN102661738A (en) | 2012-09-12 |
| CN102661738B true CN102661738B (en) | 2018-01-09 |
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| CN201210161458.6A Expired - Fee Related CN102661738B (en) | 2012-05-23 | 2012-05-23 | Aim at inertia system meridian orienting device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135944B (en) * | 2015-08-27 | 2016-12-07 | 北京航天发射技术研究所 | The method that rocket sighting system obtains reference bearing by pendulum-type north finder automatically north seeking |
| CN106643807A (en) * | 2017-01-16 | 2017-05-10 | 中国人民解放军军械工程学院 | Precision detection method of tube azimuth orienting device |
| CN111504344B (en) * | 2020-05-15 | 2022-03-11 | 天津时空经纬测控技术有限公司 | Calibration system and method for calibrating non-contact attitude measurement equipment |
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| CN2589937Y (en) * | 2002-12-20 | 2003-12-03 | 武汉大学 | Survey gyroscope |
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| JP4242790B2 (en) * | 2004-02-13 | 2009-03-25 | 株式会社 ソキア・トプコン | Surveying instrument |
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| CN102661738A (en) | 2012-09-12 |
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