SU1244677A1 - Device for monitoring parameters - Google Patents

Abstract

This invention relates to computing and instrumentation technology. The aim of the invention is to minimize the number of repetitive measurements, t, e. The shortening of the test time with a given reliability of control. A device for controlling parameters contains a pulse generator, five registers, a comparison unit, pulse counters and decoders, two RS-flip-flops, six AND elements, four AND groups, OR elements, NOT. The device according to this invention allows minimizing the number of repeated measurements with a given confidence control to reduce the time. It will be determined by the required confidence of the control. In addition, by minimizing the number of re-measurements, the costs associated with performing the control are reduced. Due to the control of the device during its operation, the reliability of its operation increases, 1 or 1 table. with -SS (L tc 4; 4i 9d sj

Description

The invention relates to computing and instrumentation technology.

The aim of the invention is to minimize the number of replicate measurements, i.e. reduction of the test time for a given confidence control.

The drawing shows the block diagram of the device.

The device contains the first register 1, the second register 2, the third register 3, the comparison unit 4, the pulse generator 5, the fifth element AND 6, the first element OR 7, the counter 8 pulses, the first decoder 9 pulses, the quarter register 10, the second decoder 11 pulses, fifth register 12 third / third decoder 13 pulses, the third group of elements AND 14, the fourth group of elements AND 15, the second element OR 16, the first RS flip-flop 17, the counter 18 pulses, the second element And 1, piecToft element And 20, the first element And 2.1, the counter 22 pulses, the first group of elements And 23, the group register 24, an accumulator 25, a second group of AND gates 26, NOT element 27, the third AND gate 28, ft chetverDl simplify operation of the device. Scroll up to a multiple of two. The number of repeated measurements of n can also be determined by the formula

.m 0.617.

The device works as follows.

On the control bus 36. Reset, a signal is given to reset the counters 8, 18 and 22, the accumulator adder 25 and the triggers 17 and 30.

Register 1 writes the upper limit code to the parameter being checked for this, an address code is supplied to the address bus 38, and the upper limit code is sent to the data bus 32 to the valid parameter.

In a similar way, the code of the lower limit for the parameter being checked is written to register 3; to register 10, the code of the chosen reliability of the control; to register 12, the code of the required number of repeated measurements (determined by

The second element 29, the second RS flip-flop 30, the first inputs 31 of the control device, the data bus 32, the address bus 33, the second device output 34, the first device output 35, the control bus 36 Reset, Record control bus 37, tires 38 -43 addresses, third output 44 devices.

When checking a control object, each parameter controls with some probability, with each controllable parameter being in the tolerance field or outside the tolerance field. Taking into account the above, a device has been developed that provides a multiple measurement of a parameter, and the number of measurements may vary with the subsequent averaging of the result. In this case, in the obtained average value of the parameter, the measurement results that do not fit into the specified tolerance field are not taken into account.

The results were obtained that allow us to determine the dependence of the number of repeated measurements n on a given confidence (D) of control, They are presented in the table.

I,

based on the table), in the pulse counter 18 is a setpoint that determines the maximum number of incomparisons issued by unit 4 comparing the second output when checking this parameter. The code of the measured parameter from the input 31 enters the register 2, which temporarily stores the received information (at the moment of its existence at the input 31). From the output of register 2, the code of the measured parameter is fed to the second input of unit 4 of the comparison. In accordance with the recorded information in registers 10 and 12, one of the elements And 14 opens, preparing the corresponding element And 15 for opening.

The device starts-up when the address code arrives on the bus 39 and when a signal is written on the control bus 37 Record. In this case, the element AND 29 opens, its output translates the trigger 30 into one state. The output signal of the trigger 30 opens the element 6, In this case, the pulses from the generator 5

pulses through the element OR 7 simultaneously arrive: at the fourth input of block 4 of comparison, by this signal, block 4 compares the code of the measured parameter value with the code of the upper limit arriving at the first input from register 1, and the code of the lower limit arriving at the third input from register 3 (if the code of the measured parameter is greater than the lower limit and less than the upper limit, then unit 4 of the comparison gives a signal from the first output, otherwise from the second output); on the information input of the counter 8 pulses; to the first input of the element 21. If the comparison unit 4 gave a signal from the first output, then this signal through the element 21 is recorded in the counter 22 pulses. The capacitance of the pulse counter 22 is selected based on the maximum number of measurements of the parameter to be tested in the same way, the number of elements 23 and registers 24 is determined. If block 4 compares the signal from the first output, this signal also allows recording the code of the measured parameter from input 31 one of the registers 24. The selection of the register 24 is determined by the signal from the decoder 9. The register 24 temporarily stores information for the period while the elements 20 and 23 are open. From the selected register 24 the information is received into the accumulator 25, there is the addition of informa- tion stored on predschuschem tact with the information received at the moment. The command coming from the direct output of the trigger 17 to the third input of accumulating adder 25, and in the absence of a signal at the first output of the pulse counter 22 in the accumulating adder 25, shifts the information to the right by the number of bits corresponding to the information recorded in the pulse counter 22, which allows most simply to divide by a multiple of two.

n is the number of readings at which the parameter value falls within the specified tolerances of the lower and upper limits, i.e. the number of pulses recorded in the counter 22 impulses. . The arrival period of the measurement code is e-. This parameter to input 31 is equal to the period of operation of the generator 5 pulses. If, after the arrival of the trigger 17, an odd number of pulses is written into the unit state in the counter 22, then

If, as a result of the next comparison, the information from the accumulating adder 25 is not output to output 35, and the element 28 in this case opens. The output signal from the AND 2y element opens the AND 19 element, through which the pulse passes from the generator of 5 pulses to the control input of the comparator unit 4. Another comparison of the measured code is made.

If the code of the measured value with the upper and lower limits of the block 4 compares the signal of comparison with the second output, it arrives at the information input of the pulse counter 18. Counter 18 pulses result in an output signal after it has overflowed. Since the counter capacity is 18

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the pulses are constant, and the number of admissible incomparisons between the code of the measured value of a parameter with given limits can vary, then by introducing a different setpoint into the pulse counter 18, a change in its capacitance is achieved. - If the comparison unit 4 generates a signal of non-comparison from the second output, then information is not received from the input 31 to the accumulating adder 25. As soon as the number of pulses equal to the number of pulses recorded in register 12 is recorded in the pulse counter 8, the corresponding AND 15 element opens. The output signal from AND 15 through the OR 16 element enters input S of the trigger 17. The trigger 17 goes to a single state, thereby removing a signal equivalent to 1 from the inverse output, and outputting it from the direct output. Element And 6 closes, the pulses from the generator of 5 pulses stop. If an even number of pulses is recorded in the counter of 22 pulses, then there is no signal at its first code. In this case, from accumulative adder 25, the code of average value of the parameter arriving at input 31 is output to output 35, i.e.

  I

L / ,.

AND

where N is the code of the parameter value when i-M is read at the input 31 of the device;

n is the number of readings at which the parameter value falls within the specified tolerances of the lower and upper limits, i.e. the number of pulses recorded in the counter 22 impulses. . The arrival period of the measurement code is e-. This parameter to input 31 is equal to the period of operation of the generator 5 pulses. If, after the arrival of the trigger 17, an odd number of pulses is written into the unit state in the counter 22, then

In this case, the information from the accumulating adder 25 to the output 35 is not provided, and the AND element 28 in this case is opened. The output signal from the AND 2y element opens the AND 19 element, through which the pulse passes from the generator of 5 pulses to the control input of the comparator unit 4. Another comparison of the measured code is made.

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parameter arriving at input 31, with the code of the upper and lower limits recorded respectively in registers 1 and 3.

If block 4 compares the signal from the first output, then an even number of pulses is recorded in the pulse counter 22 and information from the output of the accumulating adder 25 is fed to the output 35 of the device.

If the comparator unit 4 generates a noncomparison signal from the second output, it is recorded in the pulse counter 18, and the elements 19 and 28 remain open. The pulses from the generator 5 pulses arrive at the control input until an even number of pulses are recorded in the counter 22 pulses. In the event of overflow of the counter 18. pulses, an overflow pulse is output to output 34, indicating that the permissible number of non-comparison signals has been exhausted.

The operation of the decoders 11 and 13 of the elements 14 and 15 and the trigger 17 for the presence of a malfunction that does not translate the trigger 17 into one state is carried out with the help of an 8-pulse counter and a decoder 9 When the 8-pulse counter overflows, an overflow pulse excites K + 1 output in the decoder 9, thereby signaling the output of the device 44, signaling the presence of a malfunction in the indicated elements or the incorrect recording of information in registers 10 and 12. The malfunction can be determined by supplying control second information on the device inputs.

The advantage of the device is that by minimizing the number of replicate measurements with a given control accuracy, the monitoring time is reduced, which is determined by the required control reliability. In addition, by optimizing the number of replicate measurements, the costs associated with performing the control are reduced. The control of the device in the course of its operation increases the reliability of its operation.

Claims (1)

Invention Formula Device dp control parameters containing the first register, second 0 five The pins register, the outputs of which are connected to: the first inputs of the comparator unit, three pulse counters, the first output of the comparator unit is connected to the injection input of the first impulse counter, characterized in that, in order to reduce the test time for a given reliability of control, a third and the fourth registers, the first and second impulse pulses, four AND elements, two RS flip-flops, the NO element and sequentially connected pulse generator, the five AND element and the first 5 element OR, sequentially connected sixth element AND, first group of elements AND, group of registers, accumulating adder and second group of elements AND as well as serially connected fifth register, third distributor of pulses And third and fourth the OR element, the output of which is connected to the S-input of the first trigger, the inverse output of which is connected to the second input of the fifth element And and to the first input of the sixth element And, the second input connected to the first input of the first element And and to the second output b comparing the eye, and the third vho-. house - with the outputs of the second register, the inputs of which are connected to the first inputs of the device, the outputs of the third register are connected to the second inputs of the comparison unit, the third inputs of which are connected to the outputs of the first register, and a quarter of the input through the first OR element to the output of the second And element, the first the input of which is soy is dinne with the output of the pulse generator, and the second input is with the output of the third And element connected by the first input to the direct output of the first RS flip-flop, to the second inputs of the accumulating adder, and the second group of elements And, and w by the first input to the output of the first discharge of the third pulse counter, to the third input of the accumulating adder and through the element NOT to the third inputs of the second group of elements AND whose outputs are connected to the first outputs of the device, the second output of which is connected to the output of the first pulse counter, the fourth inputs the accumulating adder is connected to h. inputs of the third pulse counter, and the fifth input is connected to the bus Reset of the device, to the R inputs of the first 5 0 five 7 1244677 second and second RS-flip-flops, with the input of the fourth group, (K +1) -and output to control the first, second and third-third output of the device, the outputs of pulse counters, the S-input of the second RS-flip-flop is connected to the output of the fourth element And, and the direct output of the second RS-flip-flop is connected to the third input of the fifth element And, the output of the first element And is connected to the information input of the third pulse counter, and the second input of the first element And - with the output of the first OR element and the countable input of the first pulse counter , K. outputs through which the first decoder is under- - - ,. They are connected to the second inputs of the elements And 15 is not with the input / Write device. The fifth register is connected via the second decoder to the second inputs of the elements of the third group, the data bus is connected to the first inputs of the first third, fourth and fifth registers, to the third inputs of the first pulse counter, and the address bus to the second input of the first, third of the fourth and nth registers, with the input of the address of the first pulse counter and with the first input of the fourth element I, the second input of which connects ten the fourth group, (K +1) -and output- to the third output of the device, outputs - - ,. 5 not with input / device recording. The 5th register is connected to the second inputs of the third group of elements through the second decoder, the data bus is connected to the first inputs of the first, third, fourth and fifth registers, to the third inputs of the first pulse counter, and the address bus to the second input of the first, third, fourth and p of registers, with the input of the address of the first pulse counter and with the first input of the fourth element. And, - the second input of which connects 32 33 Compiled by I.Shved Editor M.Tsitkina Tehred M.Hodanich Proofreader S.Cherni, Order 3919/52 Circulation 671 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4