SU1444810A1 - Device for ranging signals - Google Patents

Abstract

The invention relates to the field of computer technology and automation and can be used in special devices for automatic data processing. The aim of the invention is to improve the accuracy of measurement of signal parameters. The device contains sensors 1, blocks 2 for calculating the difference, blocks 3 and 6 for switching, block 4 for ranking numbers, counter 5, register 7, decoder 8, blocks 9 for keys. 2 Il. And MP. zap

Description

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The definition relates to computing and automation and can be used in special automatic data processing devices.

The aim of the invention is to improve the accuracy of measurement of signal parameters.

This goal is achieved by solving the following optimization problem. It is necessary to rank the sensors in such a way as to ensure the minimum current error at a given point in time. Mathematically, this can be written:

min h; (t.) min (Y, (t :) - Hj (t :)),

(one)

H,. (Tj)

i 1, n, j 0,1,2, ...,

where Y; (tj) is the real output value of the i-th system (sensor) at the j-th instant of time,

- the desired value of the i-th system (sensor) at the j-th time instant.

The solution of the problem was found in the class of nonlinear nonstationary systems. An advantage of the invention is the absence of accumulation of measurement error and the possibility of operating in any mode (linear, nonlinear) while ensuring minimal error and increasing the reliability of selecting the most accurately estimated signal parameters from the set of measurement groups.

FIG. 1 is a functional diagram of the deviceJ in FIG. 2 is a functional block diagram for calculating a difference.

The device contains: sensors - signals, difference calculation units 2, first switching unit 3, number ranking unit 4, counter 5, second switching unit 6, register 7, decoder 8, key blocks 9, analog-to-digital converter 10, register 11, adder 12, the third block 13 is a switch 11, counter 14, the block 15 is a division register 16, the block 17 is subtracted.

The difference calculating unit 2 is started to perform the operation of finding the expectation of the measured parameter r at the i-th instant of time and determine the difference

0

five

0

five

0

five

0

five

0

five

S C. (

UU, M, -, H, 7

where .M. - expected value. measured parameter | for i measurement cycles, the measured value of this parameter of the measured value at i + l is the time point.

Block 2 works as follows. The analog-to-digital converter 10 (FIG. 2) converts a non-diurnal signal (t) into a parallel t-bit code, which is outputted to register 11 for each HF pulse. 14 counts the number of added numbers, at the same time at its second output there appears information in the form of a t-bit parallel code, which then goes to divider 15 (Fig. 5), where the average finding operation is performed. As soon as the number of added numbers becomes equal to the HQM of the first output of the counter 14, a pulse is emitted which, via block 13, information on the measured parameter F is output to the subtractor 17 by the t-bit parallel code, where the operation of calculating the difference U.J4.I - M. - f, which, in the form of a parallel t-bit code, gives it to block 3.

The number ranking block provides continuous real-time ordering of the P numbers in order of increasing their values (the formation of a variational series), ... stepping in a sliding window, i.e., upon receipt of (P + 1) -th number of the first; The new number is excluded, and a variational series is formed from the remaining N numbers, and the numbers of the registers in which the numbers of the variation series are found determine the ranks of the number.

The device works as follows.

From each of the P sensors 1, in the output buses, in the form of a parallel P-bit code, information on the measured parameters of the signal under study (t) is sent to the difference calculation blocks. For each write pulse (TI) information about b. in B1 a parallel w-bit coder

Yes, through block 3 it enters the number ranking block 4, in which real-time ranking of differences by value is performed; a large value has a greater rank, and a smaller one has a smaller one.

Counter 5 determines the channel number which is currently connected to block 4. Information about the channel number currently connected to block 4, the i value of which will be the smallest, is written to register 7. From the 7-channel register information 7, the channel number is - the parallel code discharge goes to the decoder 8, the output of which produces control pulses that control the key blocks, to the inputs of which from the corresponding block 2 receives information about the value of the parameter measured by this sensor 1, in the form of bit one parallel code.

In this way, the most accurately measured signal parameters are selected.

For each TI, the information from each of the sensors is updated 1.

Claims (1)

Invention Formula A device for ranking signals, containing a number ranging unit, whose recording and shift inputs are respectively a recording input and a first clock input of a device, characterized in that, in order to improve the accuracy of measuring signal parameters, n differential difference calculation blocks are entered into it (where n - number of sensors Q 5 0- five 0 Q five O4 for measuring signal parameters), the first and second switching units, the counter, the register, the decoder and the n key blocks, the information inputs of the difference calculating blocks are the formation inputs of the device, the outputs of the difference between the expected and the measured values of the n difference calculating blocks the inputs of the first switching unit, the first information output of which is connected to the information input of the number ranking unit, the output of the rank of numbers of which is connected to the control input of the second switching unit The synchronization input of which is connected to the recording input of the device and to the input of the initial installation of the first switching unit, the second information output of which is connected to the counting input of the counter, the output of which is connected to the information input of the second switching unit, the information output of which is connected to the information input of the register whose output is connected with the information input of the decoder, the pth output of which is connected to the control input of the nth key block, the information input of the nth key block is connected to the output of The actual value of the nth difference calculator, the information output of the nth key block is the nth information output of the device, the second clock input of the device is connected to the clock inputs of the n blocks for determining the difference, the first switching block and the number ranking block, the read input of the device is connected with inputs of the same name n difference calculation units. Fie.2