SU1336062A1 - Device for checking object shift - Google Patents

Abstract

The invention relates to automatic control systems and a recCanal t t 1 about 7 liters. 1 and can be used to control the movement or counting of moving objects in cases where it is necessary to distinguish the directions of their movement. The device has high accuracy and ease of execution. The device contains control channels 1 and 2 and element 3. Each control channel consists of a sensor 4, an alternating voltage generator 5, a pulse shaper 6, a trigger 7, and a SHSh-HE element 8. The trigger 7 is a combined IK-trigger with one setup R input. The operation of the device is based on the determination of the sequence of the operation of the channels and the issuance of signals depending on the direction of the displacement of the object on one or other device output. 2 Il. (L XoHoaZ ixH l / RU 10

Description

one

The invention relates to automatic control and regulation systems and can be used for

controlling the movement or counting of moving objects in cases where it is necessary to distinguish the direction of their movement.

The purpose of the invention is to simplify the device and improve its accuracy.

Figure 1 shows the structural diagram of the device; 2 shows time diagrams of the device operation.

The device for controlling the movement of objects Figure 1 contains the first 1 and second 2 control channels and the element. And 3, and each channel contains a sensor 4, for example, an electromagnetic one, an alternating voltage generator 5 operating in an oscillation stall mode, a pulse shaper 6, a trigger 7 and an OR element 8, the output 9 of the first channel 1 and the output 10 of the second channel 2 In this case, the trigger is a universal RS trigger that changes its state under the influence of the fronts of the signals from the zero to one level at its dynamic inputs, and the input of the zero setting of the trigger is a potential input.

The device works as follows.

. In the initial state, i.e. in the absence of a controlled object in the zone of sensors 4, both generators 5 operate in self-oscillation mode. The sinusoidal signals from the generators 5 are fed to the formers 6, where they are detected, converted into a signal of the unit level, and the output of the element I 3 also has a signal of the unit level. Therefore, the triggers 7 are held in the zero state, there is a single level signal at their inverse outputs, and zero level signals are held at the outputs of the OR-HE elements 8.

When any conductive or ferromagnetic object passes by sensors 4, oscillations break down at the beginning of one generator 5 and then another generator 5. For normal operation of the device, it is necessary to choose such mutual arrangement of sensors 4 so that

3360622

they had a section of the path, during the passage of which the object of oscillations in both generators 5

g would be srgoy.

Consider the case when an object moves from sensor 4 of channel 1 to sensor 4 of channel 2. In this case, oscillations of channel generator 5 are first broken and the voltage at the output of channel generator 6 becomes paBHbiM zero, and the signals at the outputs of the remaining circuit elements do not change. With further movement

The object 15 stops working and the generator 5 of channel 2, and at the output of the driver b of channel 2, the voltage becomes zero. Therefore, at the output of the element, And 3 is set to a zero signal level. Further movement of the object leads to the restoration of oscillations of the generator 5 of channel 1, and at the output of the former 6 of channel 1 a single signal appears

25 level, and the trigger 7 of channel 1 is set to one. Therefore: a single level signal appears at output 10 of the element OR-NO 8 of channel 2, the duration of which is 30 is determined by the time interval until the object leaves the sensing zone of sensor 4 of channel 2. When the object leaves the sensory zone: sensor 4 channels 2 trigger 7 channel

351 is set to the initial zero state, and at the output 10 of the element OR-NO 8 of channel 2, a zero level signal is set.

When an object moves in the direction of the SRI from sensor 4 of channel 2 to the sensor

4 channels 1, i.e. when srsh oscillations occur first in the generator

5 channel 2, and then in the generator 5 of channel 1, the operation of the device proceeds similarly. In this case, the trigger 7 of channel 2 and the element OR-NO 8 of channel 1 is overturned, and the states of the trigger 7 of channel 1 and the element OR-NOT 8 of channel 2 are

50

When the direction of motion of the object in the sensitivity zone of the sensors 4 is changed, the output signal at the output of the corresponding element OR NOT 8 does not appear or appears sequentially at the outputs of both elements OR NE 8, i.e. the possibility of error is eliminated when using the reverse object counting.

55

Timing diagrams i of FIG. 2) are shown for the case of movement of an object from sensor 4 of channel 1 to sensor 4 of channel 2.

Fore

Mule Invention

A device for controlling the movement of an object, containing the first and second control channels, in each of which the sensor output is connected via an alternating voltage generator to the input of a pulse shaper, whose code is connected to the first input of the OR-NOT element, the trigger output of one control channel is connected to

Generator 5 ka / ha 1

Generator 5 channel 2

Formiroba t spruce 6 channel /

(Wormix Channel 6

Element FROM

Channel 7 trigger 1

Channel trigger 2

Element or-NOT 8 channel 1

Element OR-n channel 2

Compiled by G. Usachev Editor N. Bobkova Tehred V. Kadar Proofreader V. But ha

Order 4050/47 Circulation 469 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

the second input of an OR-NOT element of another channel, characterized in that, in order to improve the accuracy and simplify the device, an AND element is introduced into it, the trigger is designed as an RS flip-flop, in each control channel the output of the pulse former is connected to the I-input RS- trigger exit

pulse driver of one control channel is connected to the K input of the RS flip-flop of another control channel, the outputs of the pulse driver of both control channels are connected to

the inputs of the element And, the output of which is connected to the R-inputs of the trigger of both control channels.

Claims (1)

Claim A device for controlling the movement of an object, containing the first and second control channels, in each of which the output of the sensor through an alternating voltage generator is connected to the input of the pulse shaper, the output of which is connected to the first input of the OR-NOT element, the trigger output of one control channel is connected to Generator 5ka- (\ Г \ _______ of channel 1 \ J —— by the second input of the OR-HE element of another channel, characterized in that, in order to increase the accuracy and simplify the device, the And element is introduced into it, the trigger is made in the form of an RS-trigger, each control channel the output of the pulse shaper is connected to the I-input of the RS-trigger, the output of the pulse shaper of one control channel is connected to the K-input of the RS-trigger of the other control channel, the outputs of the pulse shapers of both control channels are connected to the inputs of the element And, the output of which is connected to R -in inputs of triggers about x control channels. wvw Channel 5 Generator 2 Formirooya Tel 6 channels / shaper 6 channels 2 Element FROM Trigger 7 channel 1 wvwLI Trigger 7 channel 2 Element or NOT 8 channels / Element AND L AND NOT 8 channels 2 Figure 2