CN205719011U - The caliberating device of dynamic target dynamic deformation angle error - Google Patents

Abstract

This utility model relates to the caliberating device of a kind of dynamic target dynamic deformation angle error, it is intended to solve the problem that tradition caliberating device stated accuracy is low.Caliberating device includes dynamic target and imaging device；Dynamic target is made up of shaft-position encoder, light source, collimator objective and reflecting mirror；Imaging device includes by the most rigidly connected first object lens of lens barrel, diffusing panel, the second object lens and CCD, and diffusing panel is positioned on the image space focal plane of the first object lens, and CCD is positioned in the image planes of the second object lens.Inciding reflecting mirror after the light collimated object lens collimation that light source sends, the reflection light beam of reflecting mirror incides on imaging device, imaging device gather the punctate opacity of the cornea of dynamic target as coordinate.The advantage that this utility model has simple in construction, stated accuracy is high.

Description

The caliberating device of dynamic target dynamic deformation angle error

Technical field

This utility model belongs to optical field, relates to the mark of a kind of target range dynamic target dynamic deformation angle error Determine device.

Background technology

Electro-optic theodolite, generally with more than two as group, is arranged in first district, navigating area or target range, district, end, is leading Trajectory measurement task is undertaken, the tracking of electro-optic theodolite when playing observing and controlling, moonscope, conventional Weapon test Speed, tracking accuracy and capture ability etc. generally to be simulated surveying at indoor dynamic target when dispatching from the factory Examination.When test, dynamic target rotates with specific speed, and when rotating, dynamic target often produces micro- The mechanical deformation of amount, this mechanical deformation directly affects the stated accuracy of electro-optic theodolite.

Tradition scaling method is carried out under dynamic target resting state, is in by demarcating dynamic target During different locus, the Space Angle of target output, determines the geometric parameter of dynamic target, ties simultaneously Close the shaft-position encoder reading in dynamic target rotary shaft, it is achieved the demarcation to dynamic target.This demarcation Method precision is relatively low.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in construction, high the moving of stated accuracy The caliberating device of state target dynamic deformation angle error.

The technical solution of the utility model is:

The caliberating device of dynamic target dynamic deformation angle error, including dynamic target；Described dynamic target Including shaft-position encoder, light source and reflecting mirror；It is provided with collimation in light path between light source and reflecting mirror Object lens；The rotary shaft of described shaft-position encoder overlaps with the rotary shaft of dynamic target；It is characterized in that Also include imaging device；Described imaging device includes by the most rigidly connected first object lens of lens barrel, overflows Penetrate plate, the second object lens and CCD；Described diffusing panel is positioned on the image space focal plane of the first object lens；Described CCD position In the image planes of the second object lens；Incide reflecting mirror after the light collimated object lens collimation that light source sends, The reflection light beam of reflecting mirror incides on imaging device, imaging device the punctate opacity of the cornea picture gathering dynamic target is sat Mark.

Above-mentioned caliberating device also includes controlling to analyze software, for contrast conting dynamic target with specific angle speed The angular error that during degree motion, the mechanical deformation of generation is introduced.

The utility model has the advantages that:

The space angle of the dynamic target of motion can be carried out Accurate Calibration, thus when dynamic target is moved The space angle error that the mechanical deformation of generation is introduced carries out quantitatively demarcating accurately.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Wherein: 1-light source；2-collimator objective；3-shaft-position encoder；4-reflecting mirror；5-the first object lens； 6-diffusing panel；7-the second object lens；8-CCD；9-lens barrel.

Detailed description of the invention

With detailed description of the invention, this utility model is further described below in conjunction with the accompanying drawings.

As it is shown in figure 1, the demarcation dress of dynamic target dynamic deformation angle error provided by the utility model Put and include that software is analyzed in dynamic target, imaging device and control.

Dynamic target includes shaft-position encoder 3, light source 1 and reflecting mirror 4；Incident illumination at reflecting mirror 4 Collimator objective 2 it is provided with in light path, and the rotary shaft weight of the rotary shaft of shaft-position encoder 3 and dynamic target Close；Collimator objective 2 is between light source 1 and reflecting mirror 4.

Imaging device includes by the most rigidly connected first object lens 5 of lens barrel 9, diffusing panel the 6, second thing Mirror 7 and CCD8, and diffusing panel 6 is positioned on the image space focal plane of the first object lens 5, and CCD8 is positioned at the second thing In the image planes of mirror 7.This utility model is by arranging diffusing panel 6 and the between the first object lens 5 and CCD8 Two object lens 7, by twice imaging by the reflection photoimaging of reflecting mirror 4 to CCD8, can be prevented effectively from by Focal length in the first object lens 5 is long causes light beam not received by CCD8 completely, thus ensure that demarcation essence Degree.

Control the real time readouts (angle that i.e. dynamic target rotates analyzing software for extracting shaft-position encoder 3 Degree) and CCD8 collection punctate opacity of the cornea as coordinate (punctate opacity of the cornea during dynamic target static state as coordinate, dynamic target with Punctate opacity of the cornea when specific angle speed rotates is as coordinate), and transport with specific angle speed with this contrast conting dynamic target The angular error that time dynamic, the mechanical deformation of generation is introduced.

The specific works process of dynamic target timing signal is by employing this utility model:

(1) to its prior demarcation when dynamic target is in static state

A, the position of adjustment imaging device, make the optical axis of the first object lens 5 and the rotary shaft of shaft-position encoder 3 Coaxially；

B, dynamic target is rested on specific location (0 ° 0 ' 0 ", 90 ° 0 ' 0 ", 180 ° 0 ' 0 ", 270 ° 0 ' 0 " these four positions), and read registration θ of corresponding shaft-position encoder 3；Open light source 1 And adjust the position of lens barrel 9, make the first object lens 5 can receive reflecting mirror 4 completely and be in this ad-hoc location Time reflecting mirror 4 output directional light；

Directional light in C, step (1) B is through first object lens 5 imaging on diffusing panel 6, through diffusing panel Picture signal, through second object lens 7 imaging on CCD8, is converted to punctate opacity of the cornea as coordinate by CCD8 by the light of 6 (x_θ,y_θ), θ is the registration of shaft-position encoder 3；

The concrete principle of above-mentioned steps and process be:

Shaft-position encoder 3 registration is 0 ° 0 ' 0 " time, the punctate opacity of the cornea that CCD8 photographs is (x as coordinate₁, y₁)； Shaft-position encoder 3 registration is 90 ° 0 ' 0 " time, the punctate opacity of the cornea that CCD8 photographs is (x as coordinate₂, y₂)； Shaft-position encoder 3 registration is 180 ° 0 ' 0 " time, the punctate opacity of the cornea that CCD8 photographs is (x as coordinate₃, y₃)； Shaft-position encoder 3 registration is 270 ° 0 ' 0 " time, the punctate opacity of the cornea that CCD8 photographs is (x as coordinate₄, y₄)； If four punctate opacity of the corneas fall on same circle as coordinate, then system call interception puts in place.This equation of a circle can be expressed as:

${(x_{\mathrm{\θ}}-\frac{\underset{i=1}{\overset{4}{\Σ}}{x}_i}{4})}^2+{(y_{\mathrm{\θ}}-\frac{\underset{i=1}{\overset{4}{\Σ}}{y}_i}{4})}^2=\frac{{(x_1-x_3)}^2+{(x_2-x_4)}^2+{(y_1-y_3)}^2+{(y_2-y_4)}^2}{2}$

In formula, (x_θ,y_θ) it is encoder registration when being θ, punctate opacity of the cornea picture coordinate position on CCD8.

(2) dynamic target carries out real-time calibration to it when moving with specific angle speed

A, imaging device keep state in step (1) constant；

B, dynamic target is made to rotate with specific angular velocity；

C, the punctate opacity of the cornea picture of imaging device Real-time Collection dynamic target: after collimated object lens 2 collimation, output is flat Row light is through first object lens 5 imaging on diffusing panel 6, through the light of diffusing panel 6 through the second object lens 7 at CCD8 Upper imaging, by CCD8 by dynamic target at the figure of position (i.e. dynamic target is at each space angle) Image signal is converted to corresponding punctate opacity of the cornea as coordinate (x_θ',y_θ'), θ is the registration of shaft-position encoder；

(3) angular error that the mechanical deformation of dynamic target is introduced is calculated

The angle that software extract real-time dynamic target rotates is analyzed in A, control, and i.e. shaft-position encoder 3 is real-time Reading θ；

B, the punctate opacity of the cornea controlled in analysis software extract real-time above-mentioned steps (1) C are as coordinate (x_θ,y_θ) and step Suddenly the punctate opacity of the cornea in (2) C is as coordinate (x_θ',y_θ')；

C, the data of control analysis software integrating step (3) A, B calculate dynamic target with specific angle speed Degree rotates, when the registration of shaft-position encoder is θ, and the angular error that the mechanical deformation of dynamic target is introduced.

According to above-mentioned steps (3), when dynamic target is with specific angle speed dynamic rotary, when encoder registration is During θ, the punctate opacity of the cornea that CCD8 gathers is (x as coordinate_θ',y_θ'), then the angle that the mechanical deformation of dynamic target introduces Degree error delta r_θFor:

${\mathrm{\Δr}}_{\mathrm{\θ}}=\mathrm{\β}\sqrt{{({x_{\mathrm{\θ}}}^{\′}-x_{\mathrm{\θ}})}^2+{({y_{\mathrm{\θ}}}^{\′}-y_{\mathrm{\θ}})}^2}$

In formula, β is the moving-target mark angle value that CCD8 unit picture element characterizes.

Claims (2)

1. the caliberating device of dynamic target dynamic deformation angle error, including dynamic target；Described Dynamic Targets Mark includes shaft-position encoder, light source and reflecting mirror；It is provided with standard in light path between light source and reflecting mirror Straight object lens；The rotary shaft of described shaft-position encoder overlaps with the rotary shaft of dynamic target；It is characterized in that: Also include imaging device；

Described imaging device includes by the most rigidly connected first object lens of lens barrel, diffusing panel, the second thing Mirror and CCD；Described diffusing panel is positioned on the image space focal plane of the first object lens；Described CCD is positioned at the second object lens In image planes；

Incide reflecting mirror after the light collimated object lens collimation that light source sends, the reflection light beam of reflecting mirror Incide on imaging device, imaging device gather the punctate opacity of the cornea of dynamic target as coordinate.

The caliberating device of dynamic target dynamic deformation angle error the most according to claim 1, it is special Levy and be: also include controlling to analyze software, when contrast conting dynamic target moves with specific angle speed The introduced angular error of mechanical deformation produced.