SU1495832A1 - Device for counting piece objects - Google Patents

Abstract

The invention relates to computing and information technology. The aim of the invention is to improve the accuracy of the account. The device includes a sensor 1, comparator 2, counters 3 and 12, digital comparator 4, trigger 5, elements 6-8 of the signal delay, elements 9, 10, 11, time delay element 13, elements BANKS 14 and 15, pulse shapers 16 and 17, the pulse generator 18, the switch 19 and the one-shot 20. In the device, the signal from the sensor is discriminated not only in amplitude but also in duration. 1 il.

Description

25

31495832

The invention relates to a computing and information technology and is intended for registering piece goods in an automated process control system for e-production.

The aim of the invention is to increase the accuracy of the account by increasing the reliability of the received accounting information due to discrimination of the signal from the product not only in size but also in duration. The drawing shows a structural diagram of the device.

The device contains sensor 1, com-15 parator 2, first counter 3, digital comparator 4, trigger 5, element 6-8 signal delay, elements 9-11, second counter 12, time delay element 13, elements BANE 14 20 and 15, pulse shapers 16 and 17, pulse generator -18, pulsator 19 and one-shot 20. Digital comparator 4 can be implemented, for example, as two comparators, gating which is performed by a delayed signal from the output of generator 18. Digital setpoint the comparator Nj, is selected from the condition of the minimum duration of the interaction Mode of the registered product with the sensor 1. The setting of the digital comp-. The rator N is selected from the condition of the maximum duration of the interaction of the registered product with the sensor 1.35

The device works as follows.

When a pulse appears at the output of the sensor} (a product appeared in the working area of sensor 1), 40 comparator 2 is triggered, the setpoint of which is set to the nominal value (subject to detuning from interference). The impulse from the output of comparator 2 through the element BANCH 14 turns on the counter 3, in which during the whole signal from the part the impulses from the generator 18 accumulate. At the same time, the digital code M of the comparator 4 compares the code accumulated in the counter 3 with the jQ value. digital comparator 4. When digital comparator 4 is activated, the first output (corresponding to the first code N) generates a signal that is fed to the input of the first element 6 of the signal delay. If after that the signal at the output of the comparator 2 ends, the counting 5 is triggered through the pulse shaper 16

5 0 0 5

0 5 Q

Tick 3 and digital comparator 4 will not work on its second output and does not switch trigger 5, which will not block AND 9 element and after-time specified by signal delay element 6, AND 9 element will receive a counting signal at counter input 12. Duration of time set by delay element 6, is chosen longer than the recalculation time from the lower setpoint code of digital comparator 4 to its upper setpoint code, i.e.

 , - N) d,

where l With - the period of the pulses of the generator 18.

If the duration of the signal from comparator 2 is longer than the maximum time of interaction between the product and sensor 1, digital comparator 4 will work on the second output. In this case, the trigger 5 is energized, blocking element 9 and the pulse from the output of element 6 of the signal delay will not pass to the input of counter 12. This will trigger the element 13 of the time delay, which switches the switch 19 to the higher setting of the comparator via the one-vibrator 20 switch 20 2. In this case, the element BANGE 14 is blocked, the trigger 5 is reset to its original state, and

(N - Ng).

If at the same time the comparator 2 remained in the actuated state, a failure pulse will be generated at the output of the second element 10. If the comparator 2 when the switch 19 is switched, the comparator setpoint is reset to zero, which is made the second element of the BANNER 15, and then going to the nominal setpoint again goes to a high output level, which is highlighted by the third element 11, impulse, which will signal about getting the part into the working area of the sensor 1 and stopping it in the working area of the sensor. Moreover, the duration of time, set by the signal delay element 8, is slightly longer than the device diagnostics time. The reset of the counter 3 to the initial state is carried out on the falling edge of the signal from the output of the second element BANGE 14.

Thus, the proposed device discriminates against

impulse not only in magnitude, but also in its duration.

Claims (1)

The invention of the Device for counting piece goods, containing a sensor, the output of which is connected to the first input of the comparator, the output of which is connected to the first input of the first BAN element, the output of which is connected to the input of the first pulse shaper, a pulse generator, the output of which is connected to the counting input of the first counter, the outputs of which are connected to the information inputs of the comparator, the first output of which is connected to the input of the time delay element, the output of which is connected to the input of one vibrator, a trigger, the first, second and third elements of the delay, the first element And, the second element BANKS and the second counter, which is different in that, in order to improve the accuracy And, the output of the second element is banned through the third element of the z. Delay is connected to the second input of the third element AND, the output of which is the first output of the device, the output of the second element And the second output of the device, the output of the element of the time delay is connected to the second input of the first element The BAN and through the second pulse shaper is connected to the second inputs of the second BAN and the second element AND, the output of the one-shot is connected to the control input of the switch, whose output outputs are device inputs, the output of the first BAN element is connected to the control input of the first counter, the setup input which is connected with the output of the first pulse generator, the output of the pulse generator is connected to the gate input of the comparator, the first output of which is connected directly and through the second account, it introduced the second formu-25 delay element with trigger inputs. pulse generator, the second and third elements are And, and the switch, the output of which is connected to the second input of the comparator, the output of which is connected to the first inputs of the second element ZA-PRET and the second and third elements the output of which is connected to the first input of the first element I, the output of which is connected to the input of the second counter, the second output of the comparator through the first delay element connected to the second input of the first element I.