SU1741162A1 - Device for recognition of situations - Google Patents

Abstract

The invention relates to automation and computer technology and can be used to recognize situations with unclear features. The purpose of the invention - improving the accuracy of the device - is achieved by taking into account additional information about the importance of individual parameters 1 or 2.

Description

The invention relates to automation and computer technology and is intended to recognize situations with indistinctly expressed 1.titles.

A device is known that contains GTI, AND, NOT elements, a reversible counter, a delay element, and computational blocks with corresponding links.

The disadvantage of this device is its narrow functionality.

Closest to the proposed technical entity is a device comprising three AND elements, a GTI, an OR element, a block of registers, n computing blocks, a block of AND elements, an NOT element, a ring shift register, three delay elements, and a comparison block with corresponding links. .

The disadvantages of the known device are low accuracy, due to the fact that the importance of the signs that determine the belonging of a given situation is not taken into account.

The purpose of the invention is to improve the recognition accuracy

The goal is achieved in that a device containing a block of m multi-bit shift registers, a clock pulse generator, the output of which is connected to the control inputs of the m multi-bit shift registers of the block, and a block of calculators, are connected in series with a block of multipliers, the inputs of which are connected to the outputs of the calculator block, the block of adders and the block for extracting the maximum signal, while the inputs of the block of calculators are connected to the outputs of the block of m multi-digit shift registers.

The drawing shows an electrical block diagram of a device for recognizing a situation.

The device contains a series-connected block 1 of m multi-bit shift registers (t is the number of parameters characterizing the situation), the control inputs of which are connected to the outputs of the GTI 2, the calculator block of calculators, the multiplier block 4, the block 5 of adders and the block 6 for selecting the maximum signal h.

Yo

Vj

four

O u

Blocks 1 and 2 are standard blocks of computing technology, and blocks 3-6 in the particular case can be made in the form of ROMs operating in read mode.

The device for recognizing the situation works as follows.

It is assumed that the recognition of the situation is made by m parameters, the results of measurements of which by signals of GTI 2 are received in block 1 from m multi-digit shift registers, each of which is designed for N samples.

Thus, in block 1, in steady state, there is a set of samples of parameter values {SiJ, i 1, m; j 1, n}.

Each of the samples of the corresponding parameter is in a fuzzy relation to the recognizable situation, i.e. is a possible value of the corresponding fuzzy set Si {Si, Msi (Si)}.

The most common is the assignment of the form of the membership function of the type of approximate equality of the linear form

/ Si Soi / f

)

ABOUT)

where Soi, oi are the parameters of the membership function, characterizing its position and span, respectively.

The calculators З-i are programmed for the membership functions Ms, (Si), therefore on. their outputs form Msi (Si) values. In the multiplier block, these values are multiplied by the corresponding importance coefficients y, (i 1. m) parameters used to recognize the situation.

As a result, weighted sums are formed at the output of adders 5-j

m

 yi -MS, (s {).

J i 1

It is advisable to choose the coefficients of importance, taking into account their normalization

Ј

U) 1, 2, U | 1- therefore weighted

i 1

sums of C / 0,1 / can be interpreted as

J

the important values of the membership functions of a recognizable situation, which takes the maximum value of the weighted sums generated

Ms max

 .

Upon receipt of the next measurement results, the output signal is updated, which allows continuous assessment of the current situation.

Thus, the introduction of new blocks and links improves recognition accuracy, since additional information about the importance of individual parameters is taken into account.

Claims (1)

Invention Formula A device for recognizing a situation, comprising a block of shift registers, a block of calculators and a clock integrator, the output of which is connected to the clock input of the block of shift registers, an information input of which is an information input of the device, characterized in that, in order to increase the accuracy of the device, it contains a block for selecting the maximum signal, a block adders and a multiplier block, a group of outputs of a block of shift registers are connected respectively to a group of inputs of a block of calculators, a group of outputs of which are connected respectively to a group of inputs of a block of multipliers, a group of outputs of which are connected respectively to a group of inputs of a block of adders, a group of outputs of which are connected respectively to a group of inputs of a selection block the maximum signal whose output is a device output. 000 / 000/7 / V OOP / 5-1 Ltd / VI / °°° 1 / 4-L7 Ltd for about o ( Ltd 5-H