SU1270564A1 - Device for measuring manual angular displacement of two objects - Google Patents

Description

The invention relates to a measurement technique and can be used in astronavigation and astroorientation systems and other measurement systems where it is necessary to perform remote measurement of the mutual angular position of objects. The purpose of the invention is to increase the range of measured angles of measurement and increase accuracy by increasing the area of the irradiated space and using a position-sensitive photodetector and a weighted sum of video signals when determining the coordinates of the image center of gravity. The drawing shows a block diagram of the Device.

A device for measuring the mutual angular displacement of two objects contains a source of radiation I, consisting of a point radiator 2 and a capacitor 3, a translucent mirror 4, objective 5, a flat reflector 6, a position-sensitive photodetector 7 in the form of a matrix converter on a junction box with charge coupling an image coordinate determination unit 8 consisting of an analog-digital converter A / D converter 9, two formers 10 and P codes for coordinates, two matrix multipliers 12 and 13, three adders 14-16 and two dividing circuits 17 and 18, and bl 19 to transform the center of gravity coordinate image code value in the mutual angular peremeschen11 objects. Using a translucent mirror 4, the apex of the diverging aperture of the radiation source 1 is aligned with the optical center of lens 5, and the photosensitive surface of the photodetector 7 is aligned with its focal plane. The outputs of the photodetector 7 are connected to the inputs of the image coordinate determination unit 8, the outputs of which are connected to the inputs of the conversion unit 19. The position-sensitive photodetector is made in the form of a matrix light-signal converter on devices with charge coupling. In block 8 of determining the coordinates of the image, the outputs of the formers 10 and 11 of the coordinate code are connected to the first inputs of matrix multipliers 12 and 13, the second inputs of which are connected to the output of ADC 9 and the input of adder 16, and the outputs to the inputs of adders

The device works as follows.

Point emitter 2 and condensation; The trash 3 creates a diverging beam of rays, the top of which coincides with the optical center of the lens 5. The beam from the flat reflector 6 enters the lens 5 and, reflected from the translucent mirror 4, is focused on the photosensitive surface of the position-sensitive photodetector 7, which represents light-signal television converter based on a photosensitive array of charge-coupled devices (CCD). Lowercase

5 and the frame sync pulses and video signals from the photodetector 7 are fed to the inputs of the block 8 for determining the coordinates. This block implements a weighted summation algorithm for determining the Lenin coordinates of the center of the gravity of the image of a point source of radiation

n t

 .21 D - S X

V iii i JA.J. ,

l

z: z Aij

r ji: l

n ni

-i Lj i jiIiJ

Have

ffl

  Mr. Aij

l where X, Y - estimates of the coordinates of the center

the tin of the image of a point source of radiation Ajj - the amplitude of the signal for ij

reference points with coordinates 55Xj, yjj;

n is the number of lines of the raster; m is the number of elements along the line. 5642 14 and 15, the outputs of the adders 14 and 15 are connected to the first inputs of dividing circuits 17 and 18, the second inputs: which are connected to the output of the third adder. The outputs of the division circuits 17 and 18 are the outputs of the image coordinate determination unit 8. The inputs of the Yun coders of the coordinate code and the input of the A / D converter 9 are the inputs of the horizontal and frame sync pulses and the video signal input of the image coordinate determining unit 8. All components of the device are placed on the first object, except for the flat reflector 6, which is mounted on the second object in the aperture of the radiation source 1.

Claims (1)

Claim A day device for measuring the mutual angular displacement of two objects, containing a radiation source, a position-sensitive lens; photodetector, co30 detection unit 1270564 4 image ordinates and a conversion unit installed on the first object, as well as a flat reflector installed on the second object in the aperture of the radiation source, the photodetector is placed in the focal plane of the lens, the outputs of the photodetector are connected to the inputs of the image coordinate determination unit, the outputs of which I are connected to the unit conversion, characterized in that, in order to increase the range. the area of the measured angles, distance, measurement and accuracy, the radiation source is made with a diverging aperture, the apex of which coincides with the optical center of the lens, the position-sensitive photodetector is made in the form of a matrix converter on charge-coupled devices, and the image coordinate determination unit is made in the form of analog-digital a converter, two coordinate code shapers, two matrix multipliers, three adders and two division schemes, the outputs of the first and second coordinate code shapers m are connected to the first inputs of the first and second matrix multipliers, respectively, the second inputs of which are connected to the output of the analog-to-digital converter and the input of the third adder, and the outputs with the inputs of the first and of the second adders, the outputs of the first and second adders are connected to the first inputs, respectively, of the first and second division circuits, the second inputs of which are connected to the output of the third adder, and the outputs are the outputs of the image coordinate determination unit, the inputs of the first and second coordinate code formers, and the input of the analog-to-digital converter are respectively the inputs of the horizontal and frame sync pulses and the video signal input of the image coordinate determination unit.