RU1774166C - Displacement meter - Google Patents

Abstract

The invention relates to measuring technique The purpose of the invention is to increase the accuracy of measurement of the reference signal by eliminating the error that occurs when reversing the measurement of the direction of movement of the object. The raster converter 1 generates a measuring signal and a reference signal. Short pulse generators 4.5 generate short pulses along the edges of the measuring signal and the signal inverted by inverter 3. The generated short pulses are logically added by the OR element 6 and added to the reference signal by the generated raster converter 1. A reference signal is generated at the output of the And 2 element. 2 silt

Description

YU

WITH

4

LP

g

Qtoit

Zb

VI

VI

Јь

ck

The invention relates to measuring technique and can be used to measure linear and angular movements of various objects.

A device for measuring displacement is known, comprising a raster transducer, an AND element, the inputs of which are connected to the outputs of the raster transducer.

Closest to the proposed device for measuring movement, comprising a raster transducer with a measuring output and a reference origin output, an element And, the first input of which is connected to the reference output of the raster transducer.

A disadvantage of the device is the measurement error of the reference point when measuring the direction of movement of the raster transducer.

An object of the invention is to improve the accuracy of a reference signal.

This goal is achieved by the fact that the device for measuring displacement, comprising a raster transducer with a measuring output and a reference origin output, element I, the first input of which is connected to the reference source output of the raster transducer, is equipped with an inverter, the input of which is connected to the measuring output of the raster transducer, two short pulse generators, the inputs of which are connected to the measuring output of the raster converter and the inverter output, an OR element, the inputs of which are connected to short-pulse formers, the output of the OR element is connected to the second input of the element I.

Figure 1 presents the functional diagram of the device; figure 2 shows the timing diagrams of signals generated at the outputs of individual nodes.

The device comprises a raster converter 1 with a measuring output and a reference origin output, element And 2, the first input of which is connected to the reference point output of the raster converter 1, an inverter 3, the input of which is connected to the measuring output of the raster converter 1, shapers 4.5 short pulse, the inputs of which are connected to the measuring output of the raster transducer 1 and the output of the inverter 2, the OR element 6, the inputs of which are connected to the outputs of the shapers 4.5 short pulse, the output of the OR element b is connected with the second input of the element And 2.

The device operates as follows.

When moving an object associated

with raster converter 1, a sequence of measuring signals is formed at its outputs, and when it is in a certain spatial position, a reference signal.

When moving the raster transducer 1 water from the directions along the leading edge, the shaper 4 generates a short pulse, which through the element

5 OR 6 is fed to the second input of AND 2, the first input of which receives a reference signal. At the output of AND 2, a reference signal is generated.

When changing the direction of movement of the raster transducer 1 along the leading edge of the signal generated by the inverter 1, the short-pulse shaper 5 generates a short pulse, which is transmitted through the OR element b to

5, the second input of the element I. At the output of the element And 2, a reference signal is generated. Thus, regardless of the direction of movement of the raster transducer 1, the reference signal

0 is formed at the output of element And 2 in the same spatial position of the raster transducer 1.

Using the device improves the accuracy of measuring the reference signal

5 when reversing the direction of movement of the raster transducer 1.

SUMMARY OF THE INVENTION

0 A device for measuring displacements, comprising a raster transducer with a measuring output and a reference origin output, an element And, the first input of which is connected to a reference source output of a digital transducer, characterized in that, in order to increase the accuracy of measuring the reference signal, it equipped with an inverter, the input of which is connected to the measuring output of the raster 0 transducer, two

short-pulse shapers, the inputs of which are connected to the measuring output of the raster converter and the inverter output, with an OR element, the inputs of which are connected to the outputs of the short-pulse shapers, the output of the OR element is connected to the second input of the AND element

Movement 8 straight ahead cash 0a6, le 1D /

-U

And lj

U

Movement 8 reverse

Vt.5TIJTJIJIJIJIJI OLJI-

2nd

6x.b

.5

Lj

Lj

FIG. 2