SU1401491A2 - Minimum signal selector - Google Patents

Abstract

The invention can be used in functional converters, devices for forming logical control laws of dyne. musical systems, it is an improvement of the invention according to the author. By 1089585, it possesses wider functionality due to the fact that it allows to determine not only the minimum signal value from the set of input signals, but also its input number. This is achieved by introducing a comparators block with (n + 1) inputs and n outputs and into each differential optocoupler of third photodiodes whose cathodes are connected to the plnx: at the constant voltage source, and the anodes are connected to the bus through appropriate additional current-carrying resistors zero potential, as well as to the corresponding inputs of the comparators block. An additional (n + 1) input of the comparators is connected to the CMC output, formed by the output of the operational amplifier, and the outputs are the outputs of the indication of the minimum signal input number. 1 il. (L

Description

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The invention relates to an automaton and computer technology, can be used in functional converters and devices for generating logical laws of control of dynamic systems and is an improvement of the invention by the author. No. 1089595.

The aim of the invention is to expand the functionality. the selector by determining the sequence number of the input minimum signal.

The drawing shows an electrical functional diagram of the selector

The selector contains converters 1, -1j, input voltage to current, differential optocouplers 2, -2, operational amplifier 3, current-creating resistor A, source 5 of constant voltage Uj, additional current-setting resistors U, -10, block 11 of comparators , each differential optocoupler 2, - 2 (, consists of a LED 6, the first 7, the second 8, and the third 9 photodiodes.

In addition, the drawing shows the input signals of the selector U, and the comparators block U -Ujy, respectively, the output signal and, the selector equal to the minimum input signal, the output signals Ug, -id, the comparators block (indication signals of the input number to which the minimum signal ), constant voltage U power supply.

The minimum signal selector works as follows.

The input signals U, - U are fed to the inputs of the corresponding transducers 1, which form currents in the LED circuits 6 optocouplers 2, - 2 "The LEDs 6 optocouplers 2, - 2 emit light streams, the power of which is proportional to the corresponding input signals U, - and".

Since the second photodiodes 8 optocoupler 2c 2 are connected in series and according to, and they are fed back bias voltage sources U, the effect of light fluxes on these photodiodes 8 leads to the formation of a photocurrent at the input 3, the value of which linearly depends on the minimum of all input signals Uf ,. Consequently, at the output of amplifier 3, a signal Ugj ,, is generated.

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proportional to the minimum input signal. And since the third photodiodes 9 of all optocouplers 2-2 are fed back by the source 5 of the voltage Up, the effect of the light fluxes on these photodiodes 9 leads to the formation of 11 photocurrents on the corresponding inputs of the comparators block 11, the values of which are proportional to the corresponding input signals C, - U, Since block 11 consists of comparators, the first inputs of which are supplied respectively with the signals Uj and the second inputs are connected to the output of the selector and the output signals are changed in accordance with

1 with UenitUgj ,,; About when Uexj Ugy J

where i 1,2,3, ..., p,

then the signal at the output of block 11 appears only at the output whose number corresponds to the input to which the minimum signal from all the signals fed to the input is supplied.

Claims (1)

The proposed minimum signal selector, in comparison with the known one, possesses enhanced functionality by determining the number of the input on which the minimum signal is given while maintaining high accuracy of operation. Invention Formula Minimum signal selector for auth. No. 1089595, characterized in that, in order to expand the functionality by determining the sequence number of the input minimum signal, a comparators block, additional current-setting resistors are introduced according to the number of differential optocouplers, each of which has a third photodiode, each of which is connected to the positive pole of the constant voltage source, and each of the anodes of the third photodiodes of the functional optocouplers is connected via an appropriate additional current-carrying resistor to the bus zero potential and connected to the corresponding input of the gr-upa from the p inputs of the comparators block, the auxiliary input of which is connected to the output of the operational amplifier, and the group of outputs of the comparators block is the output of the indication (and the sequence number of the input minimum signal.