SU1363465A1 - Displacement-to-code converter - Google Patents

Abstract

The invention relates to measurement technology and automation. The aim of the invention is to increase the speed of the converter and expand its functionality by generating signals that determine the state of the object. The goal is achieved by the fact that the transducer translates into a code. Output at PriztZN (L with SP from 4 :: about recounted

Description

contains a pulse generator 11, a counter 9, a decoder 10, an LED scale 1, the first photodetector 3, the first driver 4 pulses and keys 7.8, a second photo receiver 2, a second driver 5 pulses and a HE element 6, and the counter 9 is reversible, and Photographic receivers 2.3 are rigidly interconnected with each other and with the object under control, and their outputs are outputs of the sign of the movement of an object. The converter operates in continuous continuous conversion mode, t.e. as the photodetectors advance 2.3, the LEDs on the scale 1 successively light up from its beginning to the photodetector 2, and the photodetector 3 will not be illuminated, and the number of illuminated LEDs will be equal to the number of pulses received from the generator 11

one

The invention relates to measurement technology, automation and can be used in all sectors of the national economy for measuring linear and angular displacements.

The purpose of the invention is to increase the speed of the converter and expand its functionality by generating signals that determine the state of the object.

The drawing shows a flowchart in code.

The converter contains an LED scale 1, photodetectors 2 and 3 shapers 4 and 5 pulses, element 6, keys 7 and 8, a reversible counter 9, a decoder 10 and a generator 11 of pulses.

The motion to code converter operates as follows.

In the initial state, the photodetectors 2 and 3, mechanically connected with the object being moved, are in an arbitrary position relative to the beginning of the LED scale 1. When the converter is turned on, the reversible meter 9 is in the zero state of the AI, the signals at the outputs are decoded

pulses to the summing input of the reversible counter 9, the output of which is the output of the converter. When changing the direction of motion, the photodetector 3 triggers, opening the key 7, through which the pulses from the generator 11 enter the subtraction input of the reversible counter 9. The subtraction is performed until the decoder 10 is set to the position where the photodetector 2 is illuminated and not the photoprofile 3 is illuminated. Thus, when the object is stationary, there is a signal at the output of the photoreceiver 2, and there is no signal at the output of the photoreceiver 3; and in the opposite direction, signals are present at the outputs of both photodetectors.

0

five

ra 10 is equal to zero, the LED structure of the LED scale 1 is not light vehicle and the signals at the outputs of photodetectors 2 and 3, and therefore at the output. dah shapers 4 and 5 pulses are also zero. The HE element 6 converts the zero input signal into a single signal at the output that is open: gives the key 8, and the pulses from the generator 11 arrive at the summing input of the reversible counter 9 and accumulate in it. The output code of the reversible counter 9 is converted by the decoder 10 into a sequence of output signals, alternately, starting from the first, arriving at the LEDs of scale 1. The LEDs begin to shine, and the optical radiation propagates sequentially on the LED scale 1 as the pulses arrive at the reversible counter 9. When the optical radiation reaches the photodetector 2, a signal appears at its output, which, after being formed by shaper 5 and inverted by the element NOT 6, closes key 8. Summing impulses Q: stops, and a code is set at the output of the reversing counter 9.

corresponding to the position of the photodetectors 2 and 3 relative to the beginning of the LED scale 1.

If after that the photodetectors 2 and 3 are shifted to the left, then the photodetector 3 lights up, which opens the key 7 through the pulse former 4, and the pulses from the generator 11 begin to flow to the subtracting input of the reversing counter 9. The number of pulses in the counter 9 decreases, respectively , the number of light emitting diodes from right to left on the LED scale 1 decreases. As soon as the illumination of the photodetector 3 stops, the key 7 closes and the code corresponding to the new position of the photo is set at the output of the reversing counter 9 Receivers 2 and 3.

When the photoreceivers 2 and 3 are shifted to the right, the light of the photoreceiver 2 stops, the key 8 is opened, and the pulses from the generator 11 are again fed to the summing input of the reversing counter 9, and the optical radiation propagates to the right on a scale of 1 until the photoreceiver 2 lights up.

Thus, the optical radiation produced by the LED scale 1 continuously monitors the position of the photodetectors 2 and 3, while the steady state is reached when the photodetector 2 is illuminated and the photodetector 3 is not illuminated. Thus, the presence of a signal at the output connected to the photodetector 2, and the absence of a signal at the output connected to the photodetector 3 correspond to the stationary state of the object, the absence of a signal at both outputs (at the outputs of the photoreceivers 2 and 3) corresponds to the movement of the object in one direction ( according to the drawing, to the right), and the presence of signals on both photodetectors 2 and 3 corresponds to the movement of the object in a steep direction.

The code of the reversible counter 9 unambiguously corresponds to the position of the photodetectors 2 and 3 relative to the beginning of the LED scale 1.

0

five

0

five

0

five

0

five

0

The magnitude of the displacements to be converted is determined by the length of the LED scale 1, and the discreteness of the measurement is determined by the number of LED structures in this scale 1.

The converter operates in continuous continuous conversion mode and can be used for both linear and angular movements. In the latter case, the LED scale is executed in the form of an arc or a ring.

Claims (1)

Invention Formula A motion converter in a code containing a pulse generator, keys, a counter, the outputs of which are connected to the inputs of the decoder, the outputs of which are connected to an LED scale, optically connected to the first photodetector, the output of which is connected to the input of the first pulse shaper, the output of which is connected to the control input of the first a key, characterized in that / in order to increase the speed of the converter and enhance its functionality by generating signals determining the state of the object, He introduced the second photodetector, the second pulse shaper and the element is NOT, and the counter is reversible, and the photo receiver is rigidly interconnected and with the object being monitored the output of the second photoreceiver is connected to the input of the second pulse shaper, the output of which is connected through the element NOT to the control input of the second key the output of which is connected to the summing input of the reversible counter, the output of which is the output of the converter, the output of the pulse generator is connected to the information outputs of the keys The output of the first switch is connected to the subtraction input of the reversible counter, the outputs of the photodetectors are the outputs of the sign of movement of the converter. .