SU1239758A1 - Photoelectric relay - Google Patents

Abstract

The invention relates to a pulsed optoelectronic technology and can be "used in information and robot technology complexes of automation, industrial electronics, telemechanics. The aim of the invention is to extend the functionality by organizing a controlled two-way interference-free communication over an optical channel. In order to achieve this goal, a photoelectric element 1 uses a diode control emitter-photodetector as an optoelectronic element, and an amplifier-inverter 9 and a second transistor 10 are added. 11, the device input 7, the output 12 of the amplifier-inverter 9: is the output of the device. The optoelectronic element can be optically coupled with a similar optoelectronic element 13, which is part of another photo relay. I-il 6 i (L

Description

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The invention relates to pulsed optoelectronic technology and can be used in information; and robotic complexes of automation, industrial electronics, telemechanics ..

The purpose of the invention is to increase the reliability and enhance the functionality by organizing controlled two-way jamming over optical communication.

The drawing shows a circuit diagram of the device

The photo relay contains an optoelectronic element 1, the first inverter 2, the second inverter 3, the first transistor 4 whose collector through the first resistor 5 is connected to the source 6, a constant voltage. ELECTRIC input 7 of the device is connected to the input of inverter 2 and through the second resistor 8 to the base of transistor A, the emitter of which is connected to the anode of the optoelectronic element 1. The output of inverter 2 is connected to the cathode of the optoelectronic element 1 and to the input of the inverter. 3 As an optoelectronic. element 1 used an element capable of emitting and receiving optical signals (for example, an LED with photosensitive properties or a photodiode with light-emitting properties. An amplifier-inverter 9 and a second transistor 10, the collector of which is connected to the input of the inverter amplifier 9, are inserted into the device and a third resistor 1 a source of 6-nd yarn. The emitter of transistor 4 is connected to the base of transistor 10, the output of inverter 3 is connected to the emitter of transistor 10, the output 12 of amplifier-inverter 9 is the electrical output of the device. The optoelectronic element I may be optically coupled with a similar optoelectronic element 13, which is part of another photo relay.

The device works as follows.

If a high potential is fixed at the electrical input 7 (logical 1), then the low potential is fixed at the output of the inverter 2 and, consequently, at the cathode of the optoelectronic element 1. Transistor 4 is open and, via the emitter circuit, excites the optoelectronic element 1, which in this mode emits light and, thus, generates 137758.

It acts as a transmitter of information over an optical channel.

The emitter potential of transistor 4 is small, and a high potential is maintained at the output of inverter 3. Therefore, the transistor 10 is closed, its collector potential is close to the voltage level of source 6, and the potential at output 12 is small, i.e. The device in About this mode does not transmit information through the electrical channel.

If a low potential is fixed at the electrical input 7 (logical O), then the transistor 4 is closed, 5 the voltage at the output of the inverter 2 is maintained at a high level, and the optoelectronic element 1 is shifted in the opposite direction. In this mode, the optr-electronic element 1 no longer emits light, but acts as a photodetector, recording information that enters through the optical channel.

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Now, when illuminated, the optoelectronic element 1 creates a photocurrent that unlocks the transistor 10. The collector potential of this transistor decreases, and a high potential is detected at the output 12 of the device (logical 1).

In a robot-technology complex, a photorelay with an optoelectronic element 1 interacts with a photorelay containing an optoelectronic element 13. If an optoelectronic element 1 acts as a light emitter in the information transfer mode, then the photoreceiver of this information is the optoelectronic element 13. In another mode of operation, the optoelectronic element 1 acts as the photodetector and, registers .information in the form of optical signals emitted by the optoelectronic element 13.

Thus, in the photo relay, controlled bi-directional information transfer through the optical channel is provided, which expands the functionality of the device. In the photo relay it is excluded that the transmitter of its transmitter receives signals (transmission and reception of signals through the optical channel are strictly divided by mode and time), which increases the noise immunity and, as a result, the reliability of the device.

Now, when illuminated, the optoelectronic element 1 creates a photocurrent that unlocks the transistor 10. The collector potential of this transistor decreases, and a high potential is detected at the output 12 of the device (logical 1).

In a robot-technology complex, a photorelay with an optoelectronic element 1 interacts with a photorelay containing an optoelectronic element 13. If an optoelectronic element 1 acts as a light emitter in the information transfer mode, then the photoreceiver of this information is the optoelectronic element 13. In another mode of operation, the optoelectronic element 1 acts as the photodetector and, registers .information in the form of optical signals emitted by the optoelectronic element 13.

Thus, in the photo relay, controlled bi-directional information transfer through the optical channel is provided, which expands the functionality of the device. In the photo relay it is excluded that the transmitter of its transmitter receives signals (transmission and reception of signals through the optical channel are strictly divided by mode and time), which increases the noise immunity and, as a result, the reliability of the device.

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Claims (1)

Invention Formula A photo relay containing an optoelectron element, two inverters, the first transistor, the collector of which is connected via a first resistor to a constant voltage source, the electrical input of the device is connected to the input of the first inverter and the second resistor to the base of the first transistor, the emitter of which is connected to the first electrode of the optoelectronic element, the output of the first inverter with the second electrode of the optoelectric element and the input of the second inverter, characterized in that. 397584 that, in order to increase reliability and expand functionality, a diode-controlled emitter-photodetector was used as an optoelectronic element, as well as an amplifier-inverter and a second transistor, the collector of which is connected to the input of the amplifier-inverter and through the third resistor 10 with a constant voltage source, the emitter of the first transistor is connected to the base of the second transistor, the output of the second inverter is connected to the emitter of the second transistor, the output 15 of the inverter amplifier is the electrical output of the device.