SU1117671A1 - Device for checking and recording downtimes of equipment - Google Patents

Abstract

DEVICE FOR MONITORING AND REGISTRATION OF EQUIPMENT EQUIPMENT, containing a sensor, the output of which is through the time delay element and directly connected to the inputs of the first element And, a pulse generator, the first output of which is connected to the first input of the second element And the output of which is connected to the input of the first counter, the third element And, the output of which is connected to the input of the second counter, characterized in that, in order to increase the accuracy of the device, the element NOT and the CHI element are introduced into it, the output of the first element I is connected to the first V54ODOM of the third element And, with the second input of the second element And and with the input of the pulse generator, the second output of which element is NOT connected to the third input of the second element AND and directly to the first input of the OR element, the output of which is connected to the second input (Center of the third element And, the first output of the first counter is connected to the vtos: rum input of the OR element, and the second is connected to the fourth input of the second a of element I.

Description

one

The invention relates to devices for automatic control and recording of equipment operation and can be applied in systems for automatic production control, monitoring compliance with process schedules and simply equipment time.

A device for recording time of a simple equipment is known, which contains pulse shapers, blocks for setting time and pauses, coincidence circuits, control blocks, triggers, equipment sensors, burden meters simply for equipment l.

The drawbacks of the device are the absence of the possibility of fixing the technological pause in the total time of just the equipment, the impossibility of fixing the downtime of the equipment during the shift, which does not allow to conduct the technological processes rhythmically.

The closest to the invention to the technical essence is a device for monitoring and recording equipment downtime, comprising a sensor whose output is through the time delay element and is directly connected to the inputs of the first And element, a pulse generator, the first output of which is connected to the first input of the second And element, the output of which is connected to the input of the first. counter, the third element And, the output of which is connected to the input of the second counter, the third counter and trigger 2.

However, in the known device, when the unit is stopped, the inter-operational and technological pauses are not taken into account in the total time of just the equipment, which affects the total time of just the equipment, on the technological process, and also reduces the hourly productivity of the units. This phenomenon reduces the accuracy of the device, which is reflected in the pause times commensurate with the interoperational pauses.

The aim of the invention is to improve the accuracy of the device by taking into account the time of the technological pause in the total time just equipment, if it exceeds the specified value.

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This goal is achieved by the fact that the device for monitoring and recording equipment downtime contains a sensor whose output is through the 5th end of the time element and is directly connected to the inputs of the first element I, a pulse generator, the first output of which is connected to the first input of the second element I The output of which is connected to the input of the first counter, the third element I, the output of which is connected to the input of the second counter, is entered the element NOT and the element SHI, the output

15 of the first element AND is connected to the first input of the third element AND, with the second input of the second element AND and to the input of the pulse generator, the second output of which is NOT connected to the third input of the second element AND directly to the first input of the OR element whose output is connected with the second input of the third, the element And, the first

5 output of the first counter is connected

to the second input of the OR element, and the second is connected to the fourth input of the second element I.

The drawing shows a block diagram

0 of the proposed device.

The device contains a sensor 1, an element 2 in time support, the first element I 3, a generator of 4 pulses, an element NOT 5, an element OR 6, the first J and the second counters 7 and 8, the recorder 9, made, for example, from the decoder 10 and the indicator 11, the second and third elements And 12 and 13.

The device works as follows.

0 way.

With cyclically operating equipment, sensor 1 emits impulses whose duration is equal to the pauses between cycles. Element 2 Senders

5 time has a setpoint, the duration of which is equal to the allowable or expedient time according to the technology used in the process of the process.

The time t is entered into the time delay element by means of a dial (not shown) -. The same setting device enters into the counter 7 the number of pulses, the number of which is proportional to C, i.e. n ...

5B of the initial state, i.e. when the equipment is running, the signal at the output of sensor 1 is absent, the generator of 4 pulses does not start

3

and at its output there are no pulses with a frequency f and fn. When the unit is stopped for a time t, not exceeding, element 2 of the time lag does not have time to generate a signal arriving at the first input of the first element 3, the output of the first element 3 does not have a signal, the generator of 4 pulses does not start, and counters 7 and 8 do not count impulses. The pause is not fixed.

If the pause of the interval between the interferences and the interferences or inside the cycle exceeds the specified value S, then a signal appears at the output of the time delay element 2. If at this moment the pause is not over, then the presence at the input of the first element AND 3 of the signal from the output of element 2 of the time delay (first input) and the signal from the output of sensor 1 makes it possible to generate at the output of the first element AND 3 a signal that starts the generator 4 pulses and is the enable signal for the operation of counters 7 and 8.

The pulse generator 4 generates pulses with a frequency f at the first output and f at the second output. The frequencies f and f are multiples of K, while fg is significantly greater than f is chosen

from f, f,

  max

where is the pause time in frequency pulses f ,,;

t. - time of im1, pulse frequency

.one

 - time period.

The first pulse from the generator 4 pulses with a frequency f is fed to the second input of the element OR 6 and if there is a signal at the first input of the third element And 13 is fed to the input of the counter 8. The same pulse prevents the passage of pulses from the first output of the pulse generator to the counter.7, so as the element NOT 5 forms a pulse at the third input of the second element I 12.

As soon as the first pulse disappears at the second output of the generator 4 pulses, the second element I 12 permits the passage of pulses from the first output of the geyator 4 pulses to the input of the counter 7, and T) from there through

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the element OR 6 and the third element AND 13 at the counter 8. The counter 8 is filled with pulses. Moreover, for his work, permitting

5 signals at the second, third and fourth inputs of the second element And 12. Counter 7 is filled with pulses until their number becomes equal to n, which is proportional to 10 times the pause time. During the equality of the pulses at the second output of the counter 7, a prohibitive signal is generated, which is fed to the fourth input of the second element 12 before the window

15 tubs are just an aggregate by which counter 7 is reset.

Thus, after the first impulse, which is applied from the second input of the generator, 4 pulses (in the period

20 between the first and second pulses), the counter 8 receives the number of pulses n, which is proportional to the time J. This is ensured by the fact that the pulse frequency is

5 generator 4 pulses on the first output is much higher than the frequency on the second output.

When just ending the equipment at the first input of the third element AND 13, the signal is absent and the pulse counting by the counter 8 stops. The total time of the equipment is simple.

t (n, .n,). | i: .n T,. 5 1 / t2 t2 t where n, Pl - the number of pulses,

recorded by the counter 8; T - the period of the pulse

СОВ from the second output of the generator 4 pulses.

Thus, the device allows, between the first two pulses, to fix with counter 8 the time of the technological or interoperational pause, i.e. consider this time in the total time of the equipment.

Taking into account the time of the technological pause in the total downtime of cyclically operating equipment allows to take into account hidden downtime, improve the rhythm of work, which ultimately leads to an increase in productivity of the units.

Claims (1)

CONTROL DEVICE AND REGISTRATION OF DOWNLOADS OF EQUIPMENT, containing a sensor, the output of which through the time delay element and directly connected to the inputs of the first element And, a pulse generator, the first output of which is connected to the first input of the second element And, the output of which is connected to the input of the first counter, the third element And, the output which is connected to the input of the second counter, characterized in that, in order to increase the accuracy of the device, the element NOT and the OR element are inserted into it, the output of the first element AND is connected to the first input of the third element And, with in the second input of the second AND element and with the input of the pulse generator, the second output of which through the element is NOT connected to the third input of the second AND element and directly to the first input of the OR element, the output of which is connected to the second input of the third AND element, the first output of the first counter is connected to the second input element OR, and the second is connected to the fourth input of the second element I. >