SU1223259A2 - Selector of minimum signal - Google Patents

Abstract

The invention relates to computing and is intended to provide a minimum signal from a combination of electrical and optical signals. It is an improvement on the device auth. St. No. 1089595. The selector contains input voltage-to-current converters to which differential optocouplers 2-2 are connected, each of which consists of an LED 6, the first 7, and the second 8 photodiodes. The optocouplers are open with an optical channel, the first photodiode, each optocoupler is optically coupled to one end of the optical fiber 9, the other end of which is the corresponding optical input of the selector. Simultaneous acquisition of a combination of input electrical and optical signals leads to photodiodes 7 total luminous fluxes, the power of which is proportional to the corresponding amounts of input electrical and optical signals, resulting in a signal at the output of amplifier 3 proportional to the minimum sum of the corresponding electrical and optical signals. 1 il. i (L to you O9 Yu cl “

Description

The invention relates to automation and computing, can be used in functional converters and devices for the formation of logical laws of control of dynamic systems and is an improvement of the device according to the author. Evs, No. 1089595.

The purpose of the invention is to expand the scope and functionality by separating the minimum signal from a combination of electrical and optical signals.

The drawing shows a functional diagram of the selector minimum signal.

The minimum signal selector contains converters. input voltage to current, differential optocouplers, operational amplification

3, a current-establishing resistor 4, a source of constant voltage U, 5, each differential opto-detector consisting of an LED 6, a first 7, and a second 8 photodids. In addition, the selector contains optical fibers 9 -9,

The first inputs of the transducers 1 are the corresponding electrical inputs of the device, and one of the ends of the fibers, t, are the corresponding optical inputs of the selector. The LEDs of 6 differential optocouplers are connected to the outputs of the transducers. The first photodiodes 7 of all optocouplers are connected in series and according to, the cathode of the photodiode 7 of the optocoupler 2 is connected to the plus of the constant voltage source 5, and the anode of the photodiode 7 of the optocoupler 2f is to the amplifier 3 input. Opposite the end of each fiber is optically coupled to a corresponding photodiode 7 optocoupler 2c. The second photodiode 8 of each optocoupler is connected to the second input of the corresponding transducer (. The input of the operational amplifier 3 is connected to the zero potential bus through a resetting resistor 4, and its output is an output selector

The selector works as follows.

Upon receipt of the input electrical signals and to the inputs of the corresponding transducers 1 -1, currents in the LED circuits 6 of the optocouplers are generated from their outputs. LEDs 6 optocouplers 2 -2 ,,, emit light

five

Since the first photodiodes 7 of optocouplers 2 are connected in series and according to and fed back by the source 5 of a constant voltage U, the effect of light fluxes on these photodiodes 7 leads to the formation of the input of the amplifier 3 photocurrent, the value of which linearly depends on the minimum of all the input electrical signals. Consequently, at the output of the amplifier 3, a signal and a 6X are generated. proportional to the minimum

five

five

0

five

electrical input signal.

When the input light signals arrive at the optical corresponding inputs of the fibers from their outputs, the light fluxes, whose power is proportional to the corresponding input light signals, affect the first photodiodes 7 of optocouplers 2. The effect of the light fluxes on these photodiodes 7 leads to the formation of a signal at the output of the amplifier 3. Uq, j ,, proportional to the minimum input light signal I -I. Simultaneous arrival of input

- electrical C-U, and light 1 signals to all relevant inputs leads to the impact on the first photodiodes 7 optocouplers 2 total light fluxes, the power of which is proportional to the corresponding amounts of the input electrical and light signals. The impact of the total light flux on these photodiodes 7 leads to the formation at the output of the amplifier 3 signal U „, proportional to the minimum sum of the corresponding electrical U, -U and light input signals.

. When a different combination of input electrical and light signals is received, the operation of the selector is similar to that described.

In order to ensure linearity and stability of the conversion of the input electrical signals, the second photodiodes 8 of the respective optocouplers 2 are connected to the second inputs of the converter 55

lei The transducers and the corresponding differential optocouplers can be implemented as a single device - an optoelectronic amplifier.

Thus, the minimum selector selector provides 312232594

It does not select the minimum signal, and so that, with the aim of expanding from both the set of electrical applications and light and function signals, as well as their capabilities, by highlighting a possible combination that significantly minimizes the signal from the combination it expands the possibilities of using , electrical and optical signals; optical fibers are introduced into it into functional units in x, simulation devices for the logic number of differential optocouplers, and control laws, and The differential-differential optocouplers are made of systems and other devices with an open optical channel, one of continuous logic. the end of each optical fiber is the corresponding optical

Claims (1)

The invention is a selector input, and the other end of each optical fiber is optically The minimum signal selector is connected to the first photodiode, respectively, author. St. No. 1089595, distinguishing., A differential differential optocoupler.