SU1566215A1 - Angle-measuring device - Google Patents

Abstract

This invention relates to a measurement technique. The aim of the invention is to improve the accuracy of angular measurements by increasing the stability of the device and compensating for the effect of the disc eccentricity on the measurement results. The device contains a uniformly rotating disk 1 with two diametrical slots, through which alternating illumination of the diametrical optocouplers 2 and 4 of the main direction and the diametral optocouplers 3 and 5 of the measured direction, symmetrically relative to the center of the disk 1, occurs. 4, 3, 5 pulses from their middle are formed with the help of formers 8, 9, 10, 11, respectively. These pulses generate pulses in the middle of the diametrical optocouplers of the main direction using the imaging unit 12 and the measured direction using the imaging unit 13. After the disc 1 is rotated 180 °, its slits with respect to the optocouple cells are reversed, and the process of pulse generation is repeated, and the resulting pulses and after rotation of the disk 1 by 180 °, pulses of the diametric optocouplers are used to generate pulses from their middle using shapers 14 and 15, respectively, of the main and measured directions along which by RS-trig EPA 16 formed timeslot strictly proportional to the angle between the ground and the directions of the measured emym. With the aid of the counting and recording unit 17 and the master oscillator 6, the time interval is digitized. 2 Il.

Description

The invention relates to a measurement technique and can be used to measure angles by a time method.

The aim of the invention is to improve the accuracy of angular measurements by increasing the stability of the device and compensating for the effect of disk eccentricity on measurement tanks.

Fig, 1 shows a structural diagram of the goniometric device; pas figs. 2 - time diagrams of his work.

The device contains a disk 1 with two diametrical slots mounted rotatably, optocouplers 2-5, with the diametrical optocouplers 2 and 4 of the main direction arranged symmetrically with respect to the center of the disk 1 and the diametrical optocouplers 3 and 5 are also symmetrical with respect to the center of the disk 1, connected in series master oscillator 6 and counting trigger 7, shapers 8-11 of the middle of the pulses of the optocouplers on the leading and trailing fronts, the first inputs of which are connected respectively to the outputs of the optocouplers 2-5, the second inputs to the output of the master generator 6, the third inputs - with the output of the counting trigger 7, the formers 12 and 13 pulses of the middle of the diametric optocouplers, the first inputs of which are connected respectively with the outputs of the formers 8 and 10, the second inputs from you

shaper moves 9 and 1I, third

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the inputs — with the output of the master oscillator 6; the fourth inputs — with the output of the counting trigger 7, the formers 14 and 15 pulses of the middle diameter,

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half of the disk rotation, the first inputs of which are associated respectively with the outputs of the drivers 12 and 13, the second inputs with the output of the master oscillator 6, the third inputs G with the output of the counting trigger 7, the RS-flip-flop 16, the S input of which with the output of the imaging unit 14, and the R input with the output of the imaging generator 15, the counting and recording unit 17, the first input of which is connected with the output of the RS flip-flop, the second input with the output of the master oscillator 6, (Formers 8, 9, 12 and 14 form the channel for processing the pulses of the optocouplers 2 and 4 of the main direction, and the driver and 10, 11, 13, and 15 — a channel for processing the pulses of optocouplers 3 and 5 of the measured direction). Using the RS flip-flop 16, a time interval is formed - the equivalent of the measured angle between the main and measured directions, which is digitized by master oscillator 6 and block 17 account and registration,

The device works as follows

The illumination of the diametral optocouplers 2 and 4 of the main direction and the diametrical optocouplers 3 and 5 of the measured direction occurs alternately through the diametral gaps of the uniformly rotating disk 1 after turning it through an angle depending on the mutual angular position of the directions. In addition, each optocoupler gives an impulse of different widths from IT to the front to the back of it. On the fronts of pulses

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The optocouplers 2-5 generate pulses from their middle using shaper 8 and 9 in the main direction channel and shaper 10 and 11 in the channel of the measured direction. According to these pulses, as they occur, pulses from their middle respectively form in the main direction channel by means of the former 12 and in the channel of the measured time by means of the former 13. Thus, using two diametrical slots of the disk I and the listed formers, one pulse is generated per second. the main and the measured spacing, After turning the disk 1 by 180, its slits in relation to the optrons are reversed and the process of forming the pulses is repeated, and the values obtained before and after the urn the pulses of the diameters of the optocouplers are used in the formation of nm-pulsop of their mid-point using 14 it 15 formers, respectively, of the main and measured directions, in which the time interval is strictly proportional to the angle, main and measured NRM events mp. By using the counting unit 17 and registering, the time interval is converted into digital form. During the foren-nanil pulses and counting process,

clock frequency master oscillator

6 and the frequency, half the clock speed, is obtained using the trigger 7,

FIG. 2 in rows shows the processes of forming the pulses of the middle of the corresponding blocks (FIG. 1) and the time interval, i de t ,, is the time delay of the middle of the pulse along the front and rear edges of the pulse of the optocoupler, t o the time delay of the pulse of the middle of the pulses of the diameter of the optocouplers, t 3 is the time delay of the mid-impulse along the diametral epochs half a turn. When forming a time interval - equivalent to the measured angle (, 2, line lb), as the difference in time of the executive pulses of the channels of the main and measured directions, the total time delay of a constant value is excluded.

Goniometric device of high accuracy and stability of measurement results, the formation of the middle of them

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The pulses of the optocouplers on the front and rear edges compensate for the drift of their amplitude characteristics, which are symmetrical in time, averaging the pulses of the diametrically optocouplers ) 80, and the effect of the different widths of the diametral slits of the disk. These properties distinguish the proposed technical solution from the known

Claims (1)

Claims The goniometric device containing a disk with a slit mounted for rotation, the first and second diametrically main optocouplers, is open; symmetrically relative to the center of the disk, the third and fourth diametrical optocouplers of the measured direction, located symmetrically relative to the center of the disk, master oscillator, optocoupler impulse transducer, counting unit and registers, differing in that, in order to improve the accuracy of angular measurements, four formers with -h-one pulse of the optocoupler on the front / and rear fronts, d «and the pulse former of the middle of the diametral optocouplers, two formers of the impulse half a turn of the disk, the counting trigger and the RS trigger, the second slot is made diametrically to the first, RS-flip-flop output and the first input of the counting and recording unit, the second input of which is connected to the output of the generator and the counting input the trigger, the outputs of the first and second optocouplers are connected to Hiii g by the first inputs of the first and second shapers of the midpoint of the pulses of the optocouplers on the front and rear fronts, the outputs of which are connected respectively by the first and second inputs of the first. the pulse mid-drive pulse of a di-optical optocouplers, the output of which is connected to the first input of the first pulse former of the middle of the diametric opto-switches, is half a turn of the disk, the output of which is connected to the S-triggered RS-trigger, the third and even T - chops first opgrins are connected to the first inputs of the third and fourth formers of the midpoints of the optocouplers on the front and rear edges, the outputs of which are connected respectively to the first and second inputs of the second fortimer of the midpoints of the diametrically optocouplers, the output of which is connected to the first input of the second fortiator of the impulses of the diametrically optocouplers half a turn of the disk, the output of which is connected to the R-input of the RS flip-flop, the output of the master oscillator is connected to the second inputs of the formers of the midpoint imp sov optocouplers on the front and rear edges, the third inputs of the pulse formers of the middle of diametric optocouplers and the second inputs of the pulse formers of the middle of the diametric optocouple half turn of the disk; the optocouplers and the third inputs of the pulse formers of the middle of the diametrical optocouplers by half a turn of the disk, Editor N, Bobkova Compiled by S. Konyuhov Tehred L. Oliynyk Order 1215 Circulation 480 VNIIPN State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 4/5, Moscow, Zh-35, Raushsk nab. 113035 TH / 8.2 Proofreader N. Revska Subscription