SU1325515A1 - Device for monitoring technical condition of radioelectronic units - Google Patents

Abstract

The invention relates to computerized automation, and is intended to monitor and predict the technical condition of radio electronic objects. The purpose of the invention is to increase the reliability of the evaluation of the technical condition by adapting the device to the rate of change of the monitored parameter 1 X i pa. The device contains sensors Iw of parameters, switch 2, normalizer 3, analog-digital converter 4, first 5 and second 19 memory blocks, first 6 and second 16 algebraic summing blocks, unit 7 of comparison, block 8 of specifying constants, first 9 and second 13 multiplication blocks, block 11 setting smoothing coefficients, first 12 and second 24 adders, blocks of keys from first to seventh 15, 17, 18, 23, 25,10,14, shift register 20, block 21 specifying standards, indicator 22, clock pulse generator 26, frequency divider 27. The device calculates the difference between predicted and measured values of the parameter, interpreted as the rate of its change, depending on the speed, choose the appropriate value of the smoothing coefficient, 3 slug. A d 77 l from 00 I ate ate SL 22 25 figl

Description

The invention relates to automation and computer technology and can be used to assess and predict the technical condition of radio-electronic objects.

The purpose of the invention is to improve the control accuracy by adapting the device to the rate of change of the monitored parameter.

Figure 1 shows the structural diagram of the device; figure 2 - timing charts of the device; Fig. 3 shows the dependence of the variance of the total error on the smoothing factor.

The device contains sensors 1 - 1 parameters, switch 2, normator1, gateway 3, analog-digital converter 4, first memory block 5, first algebraic summation block 6, comparison block 7, constant setting block 8, first multiplication block 9, sixth key block 10, block II setting smoothing coefficients first adder i 2, second multiplication block 13, seventh key block 14, first key block 15. second algebraic summing block 1, second 17 and third 18 key blocks, second memory block 19, shift register 20, unit 23 for setting standards, scrolling unit 22, the fourth block of 23 keys, the second adder 24, five: a block of 25 memory, a gene, a clock clock of 26 pulses and a frequency divider 27.

The device works as follows.

Cyclically with a period T, L objects are polled. In turn, each of the periods of T. consists of polling periods of parameters, j l, m. Thus, each j-th parameter of the 1st object is controlled with a TO period, which is considered a single measurement, and control of a set of objects and parameters is implemented using the principle of time division.

The generator 26 and the frequency divider 27 express signals (FIG. 2):

At | A, C; G- | jC2, .. ,,

Is) s, s,. , S

specifying the sequence of information processing, and synchronize the operation of the device nodes.

15.2

From the sensors of 1 ton characterizing the current technical condition of objects, electrical signals in analog form are fed to switch 2, which provides alternate connection of signals from each of the objects for each of the parameters and is an electronic switch consisting of L x m electronic selection circuits that receive signals from the parameter sensors, control the polling signals and synchronization signals from the frequency divider 27.

The normalizer 3 converts various electrical quantities of the monitored objects to a defined voltage scale; the conversion factor is automatically set by the control signals (.A% with in the range of the signal Sj,

Analog-to-digital converter 4 converts the voltage from the output of the normalizer into a digital binary code.

The basis for calculating the estimated and extrapolated values of an arbitrarily taken parameter is, as in the known device, the experimental smoothing method, in which the previous values of the parameters are taken into account with exponentially decreasing weights, while ensuring consistent refinement of the object's parameters according to the results of subsequent measurements. Calculation of the estimated and j ,. and the extrapolated values of the parameter j in the nth suare analysis is performed using recurrent expressions:

(

inl)

and

(

+ l)

((Mtj

V) j (“-) j

(2)

3; - smoothing factor

in the nth step;

Uflj is the result of measuring parameter j at the current nth step of the analysis;

b (p-l) is the estimated value of the parameter at the previous (n-l) -M analysis step. the output of the ADC 4 measurement results "in digital form come in

The estimated value of the parameter 0 is calculated in accordance with the expression (1).

 31325515

the first memory block 5, which in the end, at the output of the adder 12, forms a memory cell for storing a single number for at least T,. The contents of this cell are read twice in time.

register 20, and also under the action of the clock signal Sj-. through block 15 is fed to block 16, to the second

ten

The first time at the input of block 6 and the second time at the input of block 9, after which its contents are erased.

The basis for determining the value is the calculation in block 6 at each step of the analysis of the difference (/; "U, -)

Comparison in block 7 obtained calculated value and. the recording of which is driven by the sync signal Sj. through block 18, the nominal value U of the parameter j from the unit 21 for setting standards.

In block 16, the values are calculated; In block 16, the values are calculated with four constants and. &,

and,. L., stored in block 8, and vi5 "and signs of deviations 4 | controls T TTOx .Tv rMTOtrowtTi-rv о and OTT itltrTi yogogchakh gatchl

Based on the result of the comparison via blocks 10 and 14 keys of one of the five values -Jj. , x {5 students in block 11, in accordance with the rule: with s /,; d choose

at, v

estimated values of parameters from their nominal values (standards) and,; - and

at 2 tfj i-dj

at Lz 4 f / 3 at 4 - c jn

W,

.G 0

(P)

(.,

AND

 ) J 0.4; ) 0.3; Or 0.2.

h, -Hj The reference template is a permanent storage device with a capacity of L X m memory cells, when reading the contents of which there is no destruction of information. The value of the deviation d - under the block 8 of the task of constants by the representation of the clock signal S through the block

The continuous memory 7 is indicated on the indicator 22, which

device with minimal capacity used for visual assessment

four cells, allowing multiple-Results control. For each pair reading information without it on the indicator is displayed but destroyed. The number of bits of each parameter of the object, the upper and lower memory cells should not be "tolerances of deviation from the nominal

less than the 7 numbers compared in a blot.

The sixth 10 and seventh 14 blocks of keys are similar in construction. Each . of them is a combination of five independent keys (by the number of fixed values of V) s controlled by the outputs of block 7.

Filing value U,,. to the second input of block 6, the algebraic summation is disconnected from the output of block 19 under the action of the clock signals S of block 27.

The results of measurements from the second output of the first memory block are short-lived deviations of the estimated value of L; as well as extrapolated

calculation of which is the value of D (+1),

25 exists in blocks 19, 20, 23 and 24.

Block 19 contains L x m x 2 memory cells in which estimated values for each of the parameters are stored.

40 of all monitored objects for the current n-th and previous (n-l) -ro analysis steps. At each analysis step, the contents of the accumulator are updated by half. Each number

45 is stored in block 19 for two: x measurement periods, after which

is erased. In register 20, in which the first input of the block 9 with the knife, is written, the value Unj is written, under the action of the second input of which, by the clock signal Sj, a shift 11 occurs of setting the smoothing coefficients gg of the content Not through the block 10 keys arrive. Well, the most significant bits, which is equivalent to the value (1-v)). Thus, with multiplying the recorded number by 2. the output of block 9 to the first input of the block From this it follows that the register size 20 is one more than the number of gg in bits, used to represent the original number. Rezul12 receives the value of (l -) (r, i) U

 (N 1 nj 5

where it is summed up with the value (.p) formed in block 13 and delivered to the second input of block 12. The value -O comes from block 11 through block 14 to block 13 multiplication.

Tat 2 X and (, - is fed to one of the inputs of day-mat 24, to the other input of which, under the action of, the estimated value of parameter 0 is synchronized in accordance with expression (1).

As a result, the output of the adder is 12

register 20, and also under the action of the clock signal Sj-. through block 15 is fed to block 16, to the second

The calculated value and. the recording of which is driven by the sync signal Sj. through block 18, the nominal value U of the parameter j from the unit 21 for setting standards.

In block 16, the magnitude 5 "and the signs of deviations are calculated 4 | T TTOx .Tv rMTOtrowtTi-rv about and OTT itltrTi controls yogchachah gatchl

estimated values of parameters from their nominal values (standards) and,; - and

h, -Hj The reference template is a permanent storage device with a capacity of L X m memory cells, when reading the contents of which there is no destruction of information. The deviation value d - under the action of the clock signal S through the block

"" Tolerance deviation from nominal

current deviations of the estimated value of L; as well as extrapolated

calculation of which is the value of D (+1),

25 exists in blocks 19, 20, 23 and 24.

Block 19 contains L x m x 2 memory cells in which estimated values for each of the parameters are stored.

40 all monitored objects for the current n-th and previous (n-l) -ro analysis steps. At each analysis step, the contents of the accumulator are updated by half. Each number

45 is stored in block 19 for two: x measurement periods, after which

tat 2 X and (, - is applied to one of the inputs of the day-mat 24, to the other input of which is under the action of a clock signal513

la St, through block 23, the value of U (h-T) j from block 19 is applied. In the second adder 2-4, the formation /

the value of Uj); according to expression (2), which is applied by the action of the clock signal S through the block 25 to the indicator 22.

The current deviations of the estimated value of L displayed on the indicator, as well as the extrapolated values of U (j., I; in the indicator itself, are stored for time T, converted into analogue form j and then sent directly to the display. Updating the variable information that is displayed on the I1cicator, occurs with the polling period of objects

about

Parameters number of objects

as well as the upper and lower tolerances on the parameters are permanently displayed information and are not updated from period to period.

The technical effect of using the proposed device is to increase the reliability of the evaluation of the technical condition of radio-electronic objects by increasing the accuracy of determining the current and extrapolated values of the parameters.

Claims (1)

Invention Formula Technical control device state of radio-electronic objects, containing parameter sensors, switch, normalizer, analog-digital converter, first memory block, first and second multiplication blocks, block for setting smoothing coefficients, first and second adders, first to seventh key blocks, first an algebraic sum block, a shift register, a reference set unit, an indicator, a clock generator and a frequency divider connected by an input to the output of a clock generator, and the outputs to a switch synchronous outputs, the norm the first and second multipliers, the smoothing coefficients block, the first and second adders, the first algebraic sum block, the first memory block, the shift register, the standards block, the indicator and the control inputs from the first five blocks of keys out 5 o five Q, d five . 6 Parameters sensors are connected to the information inputs of the switch, the output of which is connected to the information input of the normalizer connected by the output to the input of the analog-digital converter, the first and second outputs of the block for setting smoothing coefficients are connected to the information inputs of the sixth and seventh blocks of keys, the outputs of which are connected to the inputs of the first multipliers of the first and second the multipliers respectively, the outputs of which are connected to the inputs of the first and second components of the first sum of the mater, the output of the adder is connected to The information inputs of the first key block, the shift register and the first memory block, the output of which is connected to the input of the second multiplier of the second multiplication unit and the information input of the fourth key block connected by the output to the input of the first term of the second adder, the input of the second term of which is connected to the output of the shift register, and the output with the information input of the key block connected by the output to the first information input of the indicator, the second information input of which is connected to the output of the second keys, the information input of the second key block is connected to the output of the first, algebraic cy world block, the inputs of the first and second terms of which are connected to the first-and third key blocks, respectively, the information input of the third key block, is connected to the output of the standards setting block, It is worth noting that, in order to improve the control accuracy by adapting the device to the rate of change of the controlled parameter, the second memory block, the second algebraic sum block, a comparison block and a constant setting block, the output of which is connected to the first information input of the comparison block, the output of which is connected to the control inputs of the sixth and seventh key blocks, and the second information input: to the output of the second algebraic summation block, the terms respectively with the outputs of the first and second memory blocks, the information input of the second block the memory is connected to the output of the analog-digital converter, and the output is connected to the input of the second multiplier of the first multiplication unit, the synchronous inputs of the blocks Comparisons, reference standards and the second memory block are connected to additional outputs of the frequency divider. Ofy0.6 Fig.Z