SU1298786A1 - Device for checking equipment operation and downtime - Google Patents

Abstract

The invention relates to automation and computing, in particular to technical means for monitoring the state and time of equipment operation. The aim of the invention is to expand the field of application of the device by determining non-cyclical changes in the state of equipment. The device for monitoring operation and simple equipment includes sensors 1 of the equipment condition, a generator of 2 pulses, a counter 3, a decoder 4, a delay element 5 and a block 6 of the memory of the current state of the equipment. Block 6 contains time delay elements 7, AND elements 8 and OR element 9, the Device also contains memory block 10 of the preceding equipment state, consisting of: And 11 first elements, D-flip-flops 12, And 13 second elements and OR element 14. The device also includes a coincidence element 15. The first step of the current equipment state memory block 6 is the first output 16 of the device, the second output 17 of which is the output of the coincidence element 15. 2C. f-ly, 1 ill. (L

Description

The invention relates to automation and computing, in particular, to technical means for monitoring the state and time of operation of equipment.

The purpose of the invention is to expand the field of application of the device by determining non-cyclical changes in the state of the equipment.

The drawing shows the functional diagram of the device,

The device / contains a sensor 1 of the equipment condition, a generator of 2 pulses, a counter 3, a decoder 4, a delay element 5, a block 6 of a memory of the current state of the equipment consisting of time delay elements 7, AND elements 8 and an OR element 9, block 10 the memory of the preceding equipment state, consisting of the first elements AND 11, D-flip-flops 12, the second elements AND 13 and the element OR 14, the element 15, coincidence, the output 16 of the state sign (the first output of the device) and the output 17 of the measuring signal - Neither condition (second-OUT of device).

The operation of the device is as follows.

In s1h6dnaya signal generator 2 pulses fed to the input of the counter 3, changing its output code. This code is fed to the input of the decoder 4, resulting in the initiation of its outputs corresponding to a specific information channel.

From the activated output of the decoder 4, the polling pulse goes to the elements AND 8 of block 6 and the elements 11 and 13 of block 10, as a result of which a certain information channel is switched, and after a time determined by the corresponding time element 7, the output signal of sensor 1 (logical unit in the case of a simple and logical zero in the operating state of the monitored equipment) goes to the output of the element OR 9 and further to the first input of the element 15 coincidence.

The setting of the time delay element corresponds to the maximum stopping time of the equipment, which should not be perceived by the device as a simple state. A sequence of pulses is formed on the outset of the delay element 5.

five

0

records delayed with respect to the polling pulses for the time required to trigger the recording equipment, but no more than for the duration of the polling pulse. When a write pulse arrives at the first inputs of the And 11 elements, the state of the polled sensor is recorded into the corresponding D-flip-flop, 12, the output of which goes to the output of the OR 14 element and then to the second input of the coincidence element 15.

Thus, in the time interval between the interrogation pulse and the recording pulse in the coincidence element 15, the signals from the blocks of the current 6 and the preceding 1C equipment state are compared.

If at the moment of polling any sensor 1 its state, determined by block 6., does not correspond to its previous state fixed in block 10, then at the output

 element 15 of the match, a signal of a logical unit. When a recording pulse is received from block 10, a new state of the equipment is fixed, and the output signal from the element

0 15 matches become zero.

As a result, at the output 17 of the device, a pulse signal is formed at each change in the state of 5 of the equipment, while the presence of the indicated signal at the output of 16 at the instant of action of the specified signal corresponds to the beginning of a simple signal, and the level of logical zero Q is simple.

Thus, fixing the current and previous states of the monitored equipment, taking into account the length of time of its technological shutdowns and cyclical organization of information channels not related to the technological tact of the equipment, allows the proposed device to be used to determine the change in the state of equipment with any technological mode. his works.

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Claims (3)

1. A device for monitoring operation and simple equipment comprising sensors of equipment state, the outputs of which are connected to the corresponding first inputs of the memory of the current state of the equipment, the first output of which is connected to the first input of the match element, the second input of which is connected to the output of the memory prior state of the equipment, a pulse generator, characterized in that, in order to expand the field of application of the device by determining non-cyclical changes in the state of the equipment, the decoder counter, delay element, pulse generator output are connected to the input of the delay element and counter whose outputs are connected to the corresponding inputs of the decoder, the outputs of which are connected to the second inputs of the memory of the current state of the equipment and the first inputs of the memory of the previous state of the equipment, the output of the delay element is connected to the second input of the memory block of the preceding equipment state, the third inputs of which are connected to the corresponding second outputs of the memory block The current state of the equipment, the first output of which is the first output of the device, the second output of which is the output of the coincidence element. 2. The device is pop, 1, characterized in that the memory block of the current state of the equipment contains AND elements, OR elements and time delay elements according to the number of equipment state sensors, the outputs of which are connected to the first Editor V.Danko Compiled by I. Rybakov Tehred I.Popovich Proofreader A, Obruchar Order 893/53 Circulation 470 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Razshska nab. 4/5 Production and printing company, Uzhgorod, Projecto st., 4 the inputs of the corresponding AND elements, the outputs of which are the second outputs of the memory block of the current state of the equipment and connected to the inputs of the ICH element whose output is the first output of the memory block of the current state of the equipment whose first inputs are the inputs of the corresponding time delay elements the second inputs of the AND elements are the second inputs of the memory block of the current state of the equipment. 3. The device according to claim 1, characterized in that the memory block of the previous equipment state contains the first and second elements AND, D-flip-flops and the OR element, the outputs of the first elements AND are connected to the C-inputs of the corresponding, D-flip-flops, the outputs of which connected to the first inputs of the corresponding second elements AND, whose outputs are connected to the inputs of the OR element, the output of which is the output of the storage unit of the preceding equipment state, the first inputs of the first AND elements are combined with the second inputs of the second AND elements and are The first inputs of the memory of the current state of the equipment, the second input of which is the combined second inputs of the first elements AND, the D inputs of the D-flip-flops are the third inputs of the memory of the previous state of the equipment,