SU744616A1 - Multichannel device for monitoring parameters - Google Patents

Description

The image refers to the computational technology of automatic control of technological processes with a large number of controlled parameters. A device for tolerance control is known, comprising a switch, input signal details, a resistor block, a divider control contact, a comparator, a logic processing and documentation unit, a reference voltage source, a software block. This device sequentially in time carries out the tolerance control of analog signals. The drawbacks of the device are limited functionality, poor control performance, significant information redundancy due to deterministic sequential control, as well as low reliability due to information aging during the polling time of all monitored parameters. It is also known an automatic control device containing signal conditioners, parameter outputs outside the tolerance field, each of which contains a circuit including two threshold elements corresponding to parameter deviations beyond the upper and lower limits of the tolerance field, the inputs of which are connected to the input bus of the device, and the outputs through the first OR element with the driver output, the switch, the first inputs of which are respectively connected to the device input buses, the parameter address encoder, the inputs of which correspond to connected to the first outputs of the switch, the logic unit, the first input of which is connected to the output of the address coder, and its first output is connected to the second input of the switch, the setting unit, the inputs of which are respectively connected to the third inputs of the switch, the comparison unit, the inputs of which are respectively connected with the second outputs of the switch, and the outputs, the first - lienocpencTBeHHO, and the second - through a digital converter, is connected to the second and third inputs of logic unit 2. In an idle device, the sequential control of K-yagaramegros, which were inadvertently entered beyond the field of tolerances, is carried out according to the sequence numbers without taking into account the amount of their deviations from. tolerance zones. The recognition of the state of the object of the control unit as a whole and the decisions taken to control it is carried out only through the yrem. Et:. where t.j is the time to determine the address and deviation values of the i-ro parameter, which makes the software decision process the inertial control results and the reliability of the control. The purpose of the invention is to increase the speed and accuracy of the control. The goal is achieved by the fact that in the multichannel Devices for controlling paramettes: p6v, containing signal conditioners, a switch, the first inputs are connected to the inputs of the device, and the first outputs are from; the address encoder's inputs, the output of the Ifci eiiorc GDDD5 is connected to the 7th input of the logic unit, the first output of which is connected to the second input of the switch, the unit forming unit, the outputs of which are connected to T etu1U the outputs of which, the first is directly, and the second through the analog-to-digital conversion of the body are connected according to the CR and the third inputs of the logical block, the input element is NOT, the element OR is NOT, is sequentially connected OR, the element And the pulse generator to each channel is successively connected to the shift register, the second, the OR element and the second element AND, and the forwarders of the signals are multilevel, the outputs of the formers are connected to the diasters of the shift register registers, the output of the jOfBHHHf pulse generator with Shinnam shift shift registers And, .rg / 1Ye dinacsh outputs of the higher bits of the shift registers are connected to the inputs of the OR-NOT element and to four switches of the switch, the first KOtuporo wiring harnesses are connected to the set inputs of the switch in shift, inputs of the second Element of the two OR of the connection |)% T The first Element OR with the second input of the first element AND, the third, third inputs of which are under Zhcheny with the second output of the logic block and through the EYement NO - to rub the e the taBra, the control inputs of each driver are connected to the selective buses). In FIG. 1 is a functional diagram of the device; FIG. 2 - diagram of the driver with ignals; in FIG. 3 is a switch diagram. The device (Fig. 1) contains, according to the number of monitored parameters, the shaper 1 signal of the deviation value of the monitored parameter, the t-bit shift registers 2, the generator of 3 pulses, the second elements 4 And, the switch 5, the address encoder b, the setting block 7, the block 8 comparison, logic unit 9, analog-to-digital converter 10, element 11 OR, in the second element 12 OR, element 13 AND, element 14 OR-NO, element 15 NOT. Shaper 1 (FIG. 2) contains m circuits, each of which consists of two threshold elements 16 and element 17 OR, where m is the number of quantization levels., The deviation of the control parameter of the bus 18 select control. Switch 5 -, (fig.Z) contains triggers 19, elements 20-23 OR, matrices 24 and 25 keys,., “The device works as follows. In the initial state, when all monitored parameters are in the specified tolerance zones, the device is in the standby mode: at the outputs of the formers 1, the potentials are zero, the shift registers 2 are in the initial zero state, and the generator of 3 pulses is in the decelerated state. With deviations of one or several parameters, which are the case. By the tea functions of time, the corresponding threshold elements of the 16 formers 1 are triggered outside the predetermined zone. Let at the time instant t the monitored parameters d, f, go out from the tolerance zone, and the d parameter will go beyond the upper limit, reaching the second level , and parameter 6, reaching the uppermost m - level; the lower limit is crossed by the values of the f-parameter, reaching the fourth level. The outputs of the parameters for the levels with the same numbers of the upper and lower deviations are equivalent. And so, the first and second threshold elements 16 of the channel trigger. In the upper region of d - shaper 1, all m threshold elements of 16 channels of the upper region - shaper 1, as well as threshold elements 16 of the first to fourth channels of the lower region f - shaper 1. At the outputs of the formers, 1 sig.nals are the so-called t-element unit codes, reflecting the value of the deviations d, f and the controlled parameters of the profile {1100 ... O, 111100 ... O, 11 .-. 11) . As a result, at the output elements of the 11 OR channels of the above parameters are in unit potential potentials that prepare the elements 4 for operation And only d, f and 6 registers 2. At the same time, the integral single signal from the output of element 21 OR through element 13 AND is triggered 3. The pulses from the output of the generator 3 are fed to the shift buses of only those registers 2, in which the deviation codes are fixed, i.e. shear bus d, f, 6 registers 2. This eliminates the possibility of loss of information that occurs at the outputs of the other drivers 1 during the operation of the generator 3 pulses.

As a result of the actions of the first shift pulse, a pulse appears at the dynamic output of the t-bit P - shift register 2, which by means of elements 14 OR-NOT and 13 AND stops generator 3 and is also fixed by the corresponding trigger 19 of switch 5. Thus, the device setting the priority among the monitored parameters, the current values are outside the tolerance zone, start-up, service the parameter with the greatest deviation of, and the admissible limits of the tolerance zone, i.e. controlled 2-parameter. The signals fixed in the d and f shift registers 2 are shifted one p & r to the right and look like: 0100, ...,

Oh, 011110, ..., a.

Trigger trigger 3.9 drive. It ensures reliable retention through the circuit of elements 20 OR, 15 NOT and 13 AND generator 3 into an inhibited / state. A single signal from the output of element 20 OR, passage through the sequence of elements 21 And with the order of numbers 1,2,3, ..., 8 -1 and through element 22 VI with i -number goes as At the -th input of the encoder b addresses, and on the E-th control matrices 24 and 25 keys. The signal from the B-output switch 5, connected to the installation input 6-register 2, translates it into the original zero state yo. The current and nominal values of the controlled 6-parameter come through the corresponding public keys of the matrices 24 and 25 keys to the inputs of the comparison unit 8, which gives the logical block 9 the sign of the deviation. The analog deviation signal of the monitored E-parameter from another output of block 8 is fed to the input of the analog-digital converter 10. The results of the operations of coding the address and deviation of the current value of the P-th parameter from the nominal value and the sign of the deviation is fixed by the logical block 9. Starting from the moment of fixing the address code and the sign of the parameter and up to the moment of fixation of the code of the magnitude of the deviation of this parameter, the indication of the signal generation, the decisions made according to this information for controlling the control object, from the output l The optical unit 9 is supplied with a zero signal at the input of the element 13, and thereby the generator 3 is kept in a retarded state. At the end of this process

5, on the first and second outputs of the logic unit 9, single signals appear, the following,. The trigger L9 of the switch 5 returns to the initial zero state, a single signal does NOT appear at the output of element 15, element 13 AND is triggered and generator 3 is started.

The pulses from the generator 3 output go to the Shift tires only d

5 and f registers 2 through open elements 4 AND of these registers, carried out the operation of shifting over the codes recorded in d and f registers 2.

This shift process continues until the appearance of a single pulse pulse on the dynamic output of the t-bit f of the shift register 2 of the parameter f, if during this time the real registers 2 have not accepted the sign codes of the deviations exceeding the rto

5 to its value of codes previously recorded in the d and f registers 2.

In the case of the appearance at the outputs of the formers 1 of identical codes, which simultaneously lead to

0 the appearance of single signals at the dynamic outputs of the t-bit of two or more registers 2, these single signals are fixed simultaneously by the corresponding triggers 19 of the switch 5. The device proceeds to sequential maintenance of these parameters according to the sequence numbers simultaneously entered into the switch 5 parameter settings.

The generator 3 at this time is in the inhibited state.

At the end of the service of each parameter, the current values of which left the working area, logic block 9 each time determines the state of the control object and generates a signal by controlling the 3TidM state, followed by its

0 adjusted.

If necessary, a circular or selective control or self-control device, the starting pulses of tires 18 are fed to the control inputs of drivers

five

1. The operation of the device is similar to the described algorithm.

The application of the proposed device will allow to increase the speed of obtaining reliable results of monitoring the parameters of technological processes and speed up the development of control decisions, especially in emergency situations.

Formula of invention

A multichannel device for controlling parameters containing signal conditioners, a switch, the first inputs of which are connected to the device inputs, and the first outputs, turns, to the inputs of an address encoder, the output of which is connected to the first input of the logic unit, the first output of which is connected to the second input of the switch, a shaping unit, the outputs of which are connected to t | reyimi inputs of the switch, the second outputs of which are connected to the inputs of the comparison unit, the outputs of which, the first - directly, and the second - through analog-digital The generator is connected to the second and third inputs of the logic unit, respectively, with the fact that, in order to increase the reliability and speed of the control, elements are introduced into it

NOT, OR-NOT element, series-connected OR element, AND element and pulse generator and serially connected shift registers in each channel, second OR element and second AND element, and signal formers are multilevel, shaper outputs are connected to forward dynamic inputs of shift registers , the output of the impulse generator is connected to the shift buses of the shift registers through the second AND elements, the forward dynamic outputs of the higher bits of the shift registers are connected to the inputs of the OR-NOT element and to the fourth input mi switch, the first outputs of which are connected to the installation inputs of the shift registers, the outputs of the second OR elements are connected through the first element OR to the second input. The first AND element, the third and fourth inputs of which are connected respectively to the second output of the logic unit and through the NOT element to the third output of the switch. , the control inputs of each driver are connected to the selective control buses.

Sources of information taken into account in the examination

1. USSR author's certificate number 460547, cl. G About F 15/46, 1973.

2. USSR author's certificate No. -489115, cl. .G 06 F 15/46, 1973 (prototype).

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Claims (1)

Claim A multichannel device for monitoring parameters, containing signal conditioners, a switch, the first inputs of which are connected to the inputs of the device, and the first outputs, outputs - with the inputs of the address encoder, the output of which is connected to the first input of the logic unit, the first output of which is connected to the second input of the switch ', the forming unit, the outputs of which are connected to the third inputs of the switch, the second outputs of which are connected to the inputs of the comparison unit, the outputs of which, the first - directly, and the second - through analog-digital second converter are connected respectively to second and third inputs of the logic block, wherein ni it with I in that, in order to improve reliability and speed control, elements introduced into it NOT, an OR-HE element, a series-connected OR element, an AND element and a pulse generator and in each channel sequentially connected shift registers, a second OR element and a second AND element, and the signal conditioners are multi-level, the output of the former is connected to the direct dynamic inputs of the shift registers, the output of the pulse generator is connected to the shift buses of the shift registers through the second AND elements, the direct dynamic outputs of the upper bits of the shift registers are connected to the inputs of the OR-NOT element and to the fourth inputs a switch, the first outputs of which are connected to the installation inputs of the shift registers, the outputs of the second OR elements are connected through the first OR element to the second input, the first AND element, the third and fourth inputs of which are connected respectively to the second output of the logic unit and through the element NOT to the third output of the switch , the control inputs of each driver are connected to the selective control buses.