SU506892A1 - Photoelectric converter of angular movements in a code - Google Patents

Description

The control unit is connected to a reversing counter, the output of the storage unit is connected to the control unit, the power supply is connected to one of the inputs of the third driver, and the resolution of the photoelectric converter is connected. In luminaire disks of holders with sockets for photojackers, additional illuminators and photodetectors with forming converters are installed opposite the apertures.

The coincidence of the holes on both disks in the places of installation of the illuminator and photodetectors occurs at the same time for the full course of the mechanism. And the "position of the mechanism at which a coincidence occurs is uniquely determined by the places of the marks on both disks when the shaft of the photoelectric converter is rigidly connected with the mechanism and position of the illuminators and photo sensors relative to these marks on the disks. To increase the reliability of information retrieval at control points, the disks are parallel and coaxially at a minimum distance from one another, and the additional disk is made smaller in diameter than the raster by the size of the raster lattice, which makes it possible to use the same ones for retrieving information at test points from two disks same illuminators and photo receivers.

Thus, it is possible to receive signals about a certain number of points of positions of the controlled mechanism in the form of pulses at the output of shaping converters, each of which is transmitted through its own wires. This allows you to receive information about a number of position points corresponding to certain positions of the mechanism and to determine these positions with high accuracy, and also allows you to reset the reading of the reversible counter at the instants of the signals in the control positions of the mechanism and enter the number corresponding to position of the monitored mechanism at the control point and, therefore, restore the correspondence of the output signal of the reversible counter to the position of the monitored mechanism for short-term use Photovoltaic Voltage Converter Angle Code.

FIG. 1 schematically shows an oxidized photoelectric converter, general view; in fig. 2 - movable discs and fixed holders with nests for photographic frames; in fig. 3 - functional electrical converter circuit.

A high-speed raster disk 1 is rigidly mounted on the shaft 2 associated with a controlled mechanism (not shown). ValoM 2 is connected via a reduction gearbox 3 to shaft 4, on which a low-speed secondary disk 5 is rigidly fitted. On both sides of the movable disks 1 and 5, holder-disks 6 are fixed with sockets for photo shootors: illuminators 7 and photo-detectors 8. Location of modulation tags in the form of slots ic with radii Ri and R2 on the raster disk iBbrcoKoo6opoTiHOM is shown in FIG. 2a, on a queuing additional disk, on FIG. 26, in FIG. 2s shows the location of the sockets for the fingering receivers and illuminators on the fixed discs-holders 6 for positioning the marks,

10 corresponding to those shown in FIG. 2 a, 6. The outputs of the photodetectors 8 are connected to the inputs of the drivers 9 and 10. The outputs of the drivers 9 are connected via inputs to the inputs of the direction of rotation 11

15 of the reversible counter 12. The output of the imaging unit 10 is connected to the input of the unit near the board 13. To the other input of the unit 13 the output of the storage unit 14 is connected.

The luminous flux from the illuminators 7 through the modulation marks in the form of slots on the disks is fed to the photodetectors 8. The power supply to all the circuits is supplied from the power source 15. The output signals of the sensor are represented as 1 POSITIONAL pulses UQ and

5 position code Ui, U, UK.

When the shaft 2 connected with a controlled mechanism is wound, the light flux from the illuminators 7 through the slots of a high-speed raster disk 5 or a high-speed

0 raster 1 and additional 5 slow-speed circuits go to photodetectors 8. At the outputs of drivers 9 and 10, signals appear that are added to driver 9 and are subtracted

5 by counter 12, depending on the direction of rotation of the high-speed raster disk, determined by the direction determining unit 11. The signal from the output of the former 10 is in the form of an impulse / 7 ° to the output of the sensor (not shown in the drawing), indicating that one of the positioned points of the monitored mechanism passes. At the same time, this signal is fed to the input of the control unit 13 by a reversible counter

5 12, resetting the readings of the latter and recording in it the number corresponding to the position point of the mechanism position taken from the recording unit 14. After the f / o signal disappears, the reversing counter

0 continues counting pulses from the formers 9 through the rotational direction detecting unit 11, which switches the summing and subtracting inputs of the reversible counter 12. At the output of the rev 1SIV of the downstream counter 12, signals Hi, Uz, L / s, representing the position code, are generated.

The correction of the counting results of the reversible counter is performed by the described method.

0 each time when the mechanism passes control points, it ensures that the output signal of the sensor is preserved for a momentary disappearance of the threading voltage and at the same time

p yes positional pulses.

FORLPLA invention

The photoelectric transducer of angular displacements into a code containing a raster disk, on one side of which are illuminators, and on the other, photodetectors, whose outputs are connected to the formers, a rotational direction detection unit connected to a reversible counter, and a source: IR power, differing from that, in order to improve the reliability of the converter, a control unit, a storage unit, additional disks and a reducer are introduced into it, one of

additional disks connected with the raster disk shaft through a reducer, in the raster and one of the additional disks, are located; married. between other additional

the disks in which the illuminators and photodetectors are placed, make holes, the first two drivers are connected to the block and the directions of rotation are determined, the output of the third driver through the control unit is connected to a reversible counter, the output of the storage unit is connected to K. the control unit, to one of the inputs of the third driver power source is connected.

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