SU1667128A1 - Device for checking equipment - Google Patents

Abstract

The invention relates to a technique for monitoring and recording equipment operations, intended to compare planned and actual production workings and can be used in a conveyor production method. The aim of the invention is to simplify the device and improve accuracy. The device contains generators 1, 3 pulses, a divider 2 frequencies, counters 4, 7, 28, a block of 5 switches, And 6, 16 elements and by the number of controlled operations - counting channels 8 ₁ ... 8 _K , which contain sensors 11 ₁ . .. 11 _K completion of operations, counters 13 ₁ ... 13 _K , decoders 14 ₁ ... 14 _K , elements 15 ₁ ... 15 _{K of the} display, blocks 9 ₁ ... 9 _{K of the} comparison and blocks 10 ₁ . .. 10 _K switches, elements OR 17, 25, 27, triggers 18, 19, element 20, alarm unit 21, switch 22, display unit 23, output sensor 24, delay elements 26, 30 and decoder 29. The device allows em o erativno carry out the control and regulation of the production process. 1 il.

Description

The invention relates to techniques for monitoring and recording the operation of machines and apparatuses, is intended to compare the planned and actual production of products, automatic control of the accounting of equipment and can be used, for example, with a conveyor production method.

The purpose of the invention is to simplify the device and improve accuracy by eliminating additional elements in each counting channel.

The drawing shows a block diagram of the proposed device.

The device contains a first pulse generator 1, a frequency divider 2, a second pulse generator 3, a first counter 4, a block of 5 switches, a first element And 6, a second counter 7, made of bits 7ι-7 _η , according to the number of controlled operations - counting channels 8, each of which is equipped with a comparison unit 9, a switch unit 10, an operation completion sensor 11, an element 12, a counter 13, a decoder 14 and an indication element 15, a second element 16, a first element 17, a first 18 and a second 19 triggers, an element NOT 20, block 21 alarm switch 22 Torr, the display unit 23, the sensor 24 output, a second OR element 25, the first delay element 26, a third OR gate 27, the third counter 28, decoder 29 and a second delay element 30.

The device operates as follows.

Before starting work, the dispatcher (operator) sets on the block of 5 switches the value of the division coefficient of the frequency divider 2, equal to the planned task for the manufacture of products for the planned working period of time, and on blocks 10t-10 _{to the} switches - the time to perform controlled operations. In the initial state, the counters 4, 7, 13ι ~ 13k are reset. The counter 28 is set in a state in which there is a signal at the first output of the decoder 29 and the second input of the And 12ι element connected to it, there are no signals at the other outputs of the decoder 29, 0 is set at the output of the first trigger 18, and 1 is set at the output of the second trigger 19 ( the initial installation circuits of triggers 18, 19, counter 28 and zeroing of counters 4, 7 and 13ι ~ 1 Зк are not shown in the drawing).

The pulse generator 1 continuously generates pulses that are fed to the third input of the frequency divider 2, Each time a trigger pulse is received from the second pulse generator 2 to the first input of the frequency divider, it passes to the input of the first counter 4 the number of pulses equal to the value of the division coefficient set on block 5 switches. Therefore, at the output of the first counter 4, the signal frequency exactly corresponds to the value inverse to the planned task.

With the arrival of the next trigger pulse to the input of the frequency divider 2, the operation is repeated and the next burst of pulses arrives at the input of the first counter 4. The division ratio of the first counter 4 is constant and equal to the number of pulses issued by the second pulse generator 3 for the planned period of time (shift, day, etc.). For example, in the proposed device, the division coefficient of the first counter 4 is equal to the number of seconds in a shift, therefore, the pulse repetition period from the second pulse generator is a second.

At the same time, pulses from the second pulse generator 3 arrive through the first input of the first element And 6 to the first (counting) input of the second counter 7, consisting of η decimal places 7ι ~ 7 _π connected in series. The total number of decimal places is determined by the manufacturing time of one unit of production according to the formula η = log bOhT, where T is the manufacturing time of one unit of production, min;

- coefficient for translating T in seconds;

η is the total number of decimal places of the second counter 7, and in the calculation the whole part is taken with rounding towards a large value.

The binary-decimal code from the second counter 7 goes simultaneously to the second inputs of the blocks 9ι ~ 9κ comparing all the counting channels 8ι ~ 8κ, the second inputs of which are supplied with the binary-decimal code dialed earlier on the blocks 10ι — 10k of the switches.

If the planned time has expired and the current operation has not been completed, then at the inputs of one of the comparison blocks 9ι ~ 9κ (for example, at block 9i, i = 1, 2, ... к), the code matches and appears on its output signal. The signal from the output of the comparison unit 9ι passes through the elements OR 25 and AND 16 to the input of the trigger 18. and through the elements AND 16, OR 25 and 17 and the element 26 of the delay to the input of the trigger 19.

In this case, the second trigger 19 remains in its original state, and the first trigger 18 switches at its output, and accordingly, signals appear on the inputs of the first element OR 17, the element Η E 20 and the third inputs of the elements AND 12ι ~ 12κ. The signal is also present at the second input of the And 12i element. At the second input of the first element And 16 the signal disappears. In this regard, the first element And 6 does not pass pulses from the generator 3 pulses to the counting input of the second counter 7 and therefore, the planned time for the subsequent controlled operation is not performed, and the element And 12ι passes these pulses to the input of the control counter 13b using the decoder 14 | indicators of the indication element 15i, as well as the corresponding input of the signaling unit 21. The alarm unit 21 is turned on and gives information in the form of light and sound signals about the lag of the actual execution time of the current operation from the planned or idle equipment, and the indication element 15 captures this time.

After actual execution of the current operation, the signal from the sensor 11ι of the completion of the operation receives a signal through the third element OR 27 to the first input of the second trigger 19th counter input of the third counter 28 and through the second delay element 30 to the second input of the first trigger 18. Third counter 28, the division ratio of which is determined by the number of controlled operations, goes into the next state and at the output of the decoder 29 connected to the second input of the element And 12 (+1, a signal appears, and at the second input of the element And 12j the signal disappears. The second tr Giger 19 is switched, the signals disappear at its output and at the corresponding inputs of the elements M 12ι ~ 12κ and the second element And 16. The first trigger 18 is set to its original state and with its output pulse coming through the first elements OR 17 and delay 26 returns the second trigger 19 in the initial state.In connection with the resumption of the supply of pulses through the first element And 6 to the counting input of the second counter 7, the countdown of the scheduled time for the subsequent operation begins, and due to the termination of the supply of pulses through element And 12j, the signaling unit 21 is turned off and the lag time accounting is stopped.

If the current operation is completed earlier than the scheduled time, then the output of the corresponding sensor 111-11 _{By the} end of the operation (for example, sensor 111), a signal will arrive through the OR element 27 to the inputs of the second trigger 19 and the third counter 28 and through the second delay element 30 to the second input of the first trigger 18.

In this case, the third counter 28 is installed in the next (I + 1) -th state, the second trigger 19 switches both at its output and at the corresponding inputs of the elements And 12ι — 12k and the second element And 16 the signals disappear. The first trigger 18 remains in its original state, and the element And 12 | does not pass pulses to the inputs of the alarm unit 21 and counter 13 ,. Therefore, time is not counted and the signaling unit 21 does not turn on, since the first element And 6 transmits pulses to the counting input of the second counter 7, the counting of the planned execution time of the current operation continues, after which the signal from the output of the comparison unit 9ί through the second and first elements OR 25, 17 and delay element 26, the second trigger 19 returns to its original state.

If the actual execution time of the current operation coincides with the planned one, then from the output of the corresponding comparison block 9ι-9 * (for example, block 9i) and the sensor 11i of the completion of the operation through the corresponding elements OR and AND, signals are simultaneously sent to the first inputs of triggers 18 and 19. In this situation, both triggers 18, 19 can be switched simultaneously or only one of them. These Triggers are returned to their original state by the corresponding signals delayed by the delay elements 26. 30, which eliminates the undefined state of the triggers 18. 19 and improves the accuracy of the device by eliminating the false response of the signaling unit 21 and the false accounting of the time lag or downtime of the equipment.

After expiration of the scheduled time of the last controlled operation signal from the output of the last block 9 _By comparing a second counter 7 is reset (zero) state, and after filling the first counter 4, which corresponds to the expiration of the planned time manufacturing unit of products, the signal from its output is supplied to the switch 22. The switch 22 after the arrival of the next control signal from the output of the first counter 4 switches on the display unit 23 (its planned part), the next combination of numbers, respectively currently planning task. time, and from the sensor 24 of the output, informing about the manufacture of the next unit of production, the display unit 23 (its actual part) moves to the position corresponding to the next combination of its significant digits.

By comparing the planned and actual values of production, controlling the lag of the actual execution time of each operation from the planned one, urgently identifying cases of lag and downtime of equipment for only one operation, the execution of which is regulated by 10 at the moment, you can quickly monitor and regulate the production process.

Thus, the proposed device in comparison with the prototype, allows 15 to simplify its design by eliminating in each counting channel additional elements NOT, OR, AND, two triggers and their corresponding connections, as well as increasing accuracy by eliminating false 20 of the alarm block 21 and false accounting of equipment downtime caused by the uncertain state of triggers 18, 19, if their inputs receive signals from 25 outputs of comparison blocks 9ι ~ 9κ and sensors 111-11 at the end of the run neniya operation through respective OR elements 25, 27 and 16 and that corresponds to the coincidence of the actual execution time of current 30 with the planned operation.

Claims (1)

Claim The apparatus for control of equip- dovaniya 35, comprising first and second goneratory pulses, a frequency divider unit switches, the first and second counters, the first and second AND gates, ^switch,! output sensor, display unit, 40 signaling unit and, by the number of controlled operations, counting channels, each of which is equipped with an operation completion sensor, serially connected by a switch unit and 45 comparison unit and serially connected AND elements, counter, decoder and indication element, output the second pulse generator is connected to the first input of the first element And and with the first 50 input of the frequency divider, the second and third inputs of which are connected respectively to the outputs of the block switches and the first pulse generator, and the output is to the input of the first counter, the output of which is connected to the first input of the switch, the second input of which is connected to the output of the output sensor, and the outputs to the inputs of the display unit, in each counting channel, the second inputs of the comparison unit are connected to the outputs of the second device counter, the first input of the And element is connected to the output of the second pulse generator of the device, the output of the And element of each counting channel is connected to the inputs of the device’s alarm unit, the output of the first element And nen with the first input of the second counter, characterized in that, in order to simplify the device and increase * accuracy, the first and second delay elements, the first, second and third OR elements, the NOT element, the first and second triggers and the third counter connected in series are introduced into it and a decoder, the inputs of which are connected to the second input of the AND element of each counting channel, the output of the second OR element is connected to the first inputs of the first element. OR of the second AND element, whose output is connected to the first input of the first trigger, the second input of which is connected to the output of the second delay element, and the output - with the second input of the first OR element and through the element NOT - with the second input of the first AND element, inputs of the second OR element connected to the outputs of the block of comparison of the counting channels, the output of the block of comparison of the last counting channel is connected to the second input of the second counter of the device, the output of the third element OR is connected to the input of the second delay element, the input of the third counter and the first at the input of the second trigger, the output of the first OR element through the first delay element is connected to the second input of the second trigger, the outputs of the first and second triggers are connected respectively to the third and fourth inputs of the AND element of each counting channel, the inputs of the third OR element are connected to the output of the sensor for completing the operations of each counting channel, the output of the second trigger is connected to the second input of the second element I.