SU1383422A1 - Device for counting piece articles - Google Patents

Abstract

The invention relates to information and computing technology and can be used as a peripheral sensor B system of operational management of production. The device allows accounting of products of various types. The device contains sensors 1, 2, elements AND 3-5, delay elements 6, 22, 23, pulse generator 7, prohibition elements 8-11, elements OR 12-15, meter 16, decoder 17, counter 18 for looking at the types of products, mismatch element 19, single-vibrators 20, 21 and trigger 24. Identification of products by type is carried out by the duration of their interaction with the sensors during movement. 1 il.

Description

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The invention relates to information and computing technology and can be used as peripheral sensors in a production control system.

The purpose of the invention is to expand the field of application of the device by identifying several types of products with its help.

The drawing shows a block diagram of the device.

The device contains the first 1 and second 2 sensors, the first 3, the second 4 and the third 5 elements And, the first delay element 6, made in the form of a shift register, a pulse generator 7, the fourth 8, the second 9, the third 10 and the first 1 1 prohibition elements, the first 12, third 13, second 14 and fourth 15 OR elements, counter 16, decoder 17, counters 18 by the number of product types, mismatch element 19, second 20 and first 21 one-shot, second 22 and third 23 delay elements and trigger 24.

The device works as follows.

; In the initial state (in the absence of the product in the working areas of the sensors 1 and 2), the counter 16 is reset, and the trigger 24 is set to enable the AND 5 element to pass the signal from the one-shot output 20.

When products pass in front of sensor 2, the first element 6 of the delay causes a unit that advances to the ei o output during the whole time: the signal from the output of sensor 2 to the first delay element 6 is brought down by the units that move first to its second output, where the second element 4 is opened to pass pulses from the output of the generator 7 pulses to the clock input of the counter 16.

If the pulse duration from the second sensor 2 changes on the counter 16, the latter is set to the zero state, the output of the first prohibition element 8 is a signal that passes through the signal delay elements 23, switches trigger 24 from the initial state, blocking AND 5 to pass the signal from the output of the element 3. At the same time, the first one-shot 20 must provide the necessary delay for reliably blocking this signal, because of the large response time of the trigger 24 and the prohibition element 8.

If, when measuring the duration of the signal from the second sensor 2, a zero level appears at its output, the signal at the first output of the first delay element 6 appears at the input of the element I 3. From the output of the first sensor 1 by this time there is a signal. If this signal is simultaneously

appears with the signal of the second sensor 2. the first single-vibrator 20 selects the falling edge of this signal and it passes to the output of the element 5, gating the decoder 17,

on one of the outputs of which a signal appears, which is detected by one of the counters 18. At the same time, the second element OR 13 returns the counter 16 to the initial state via the OR element 15. If

When signals appear at both inputs of the first element I 3, their durations do not coincide; this mismatch is highlighted by the mismatch element 19.

If the duration of the mismatch signals exceeds the time specified by the delay element 22 (the signal is shifted relative to another or the signal is longer relative to the other), a signal appears at the output of the prohibition element 10 which, passing through the OR element 14 also triggers the 24, thereby blocking the passage signal through element 5. In the case when trigger 24 is activated, element 5 is blocked when a signal appears at the output of the first sensor 1. At the same time, a pulse appears on inhibit elements 9 and I1 and trigger OR 14 through element 14 24. In this case, the signal for gating the decoder 17 does not form, and the reset of the counter 16 and the cocked trigger 24 to the initial state is performed on the rear

the front of the signal from the output of the element OR 12 through the one-shot 21 and the delay element 23, which ensure the device is reset to its original state only after the product passes by the sensors and 2. This signal can be used to warn about the absence of registration of the product as it passes by the sensors 1 and 2

Thus, in the proposed device, the product is discriminated not only by their movement from the sensor to the sensor, but also by the duration of their interaction with the sensors, which significantly expands the functionality of the device.

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Claims (1)

Invention Formula 0 A device for counting products, comprising sensors, the output of the first of which is connected to the first input of the first element And, the output of the second sensor is connected to the first input of the first delay element, the first output of which is connected to the second input of the first element And, a pulse generator, the output of which is connected to the first the input of the second element And, the output of which is connected to the first input of the counter, characterized in that. for the purpose of expanding the field of application of the device by identifying various types of products, a decoder, counters for the number of types of products, AND and OR elements, prohibition elements, single-vibrators, delay elements, a mismatch element and a trigger, the output of the first sensor are connected to the first inputs of the first the OR element, the first prohibition element and the mismatch element, the output of which is connected to the first inputs of the second and third prohibition elements and through the second delay element to the second input of the third prohibition element; the first is connected to the first input of the second OR element, the output of which is connected to the first input of the trigger, the output of which is connected to the first input of the third element I, the output of which is connected to the first input of the decoder, the outputs of which are connected to the inputs of counters by the number of types of products and the third OR element, the output of which is connected to the first input of the fourth OR element, the output of which is connected to the second input of the counter, whose outputs are connected to the second inputs the decoder, the output of the pulse generator is connected to the first input of the fourth prohibition element and the second input of the first delay element, the second output of which is connected to the second inputs of the second element And the fourth prohibition element, the output of which is connected to the second input of the second element OR, the first output of the first delay element is connected to the second inputs of the mismatch element and the first OR element, the output of which is connected to the input of the first one-shot and the second input of the second prohibition element, the output of which is connected to the second th input of the first element of the ban, the output of which is connected to the third input of the second element OR, the output of the first one-shot through the third delay element is connected to the second inputs of the trigger and the fourth element OR, the output of the first element I through the second one-shot is connected to the second input of the third element I.