SU917346A1

SU917346A1 - Electronic relay

Info

Publication number: SU917346A1
Application number: SU792897367A
Authority: SU
Inventors: Леонид Григорьевич Борисов
Original assignee: Предприятие П/Я В-8828
Priority date: 1979-12-14
Filing date: 1979-12-14
Publication date: 1982-03-30

Description

(S) ЭЛЕКТРОННОЕ РЕЛЕ(S) ELECTRONIC RELAY

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Изобретение относитс к автоматике и может быть использовано в раз личных област х техники.The invention relates to automation and can be used in various fields of technology.

Известен специальный тип электромеханических реле, называемых дистанционными переключател ми, предназначенный дл коммутации в мощных цеп х. Дл управлени дистанционными переключател ми энерги во входной цепи (в обмотке) необходима только в момент переключений j l Недостаток известного устройства заключаетс в низкой надежности из-за истирани и подгорани контактов.A special type of electromechanical relays, known as remote switches, is known for switching in high-power circuits. To control remote switches, the energy in the input circuit (in the winding) is necessary only at the moment of switching j. A disadvantage of the known device is the low reliability due to the abrasion and burning of the contacts.

Наиболее близким по технической сущности к предлагаемому вл етс . электронное реле, содержащее последовательно соединенные элемент гальванической разв зки с входным и выходным преобразовател ми, операционный усилитель и транзисторной ключ tz. The closest in technical essence to the proposed is. an electronic relay containing series-connected galvanically isolated element with input and output converters, an operational amplifier and a transistor switch tz.

Недостаток данного реле состоитThe disadvantage of this relay is

В невозможности сн ти управл ю/щего сигнала после включени репе.It is impossible to remove the control signal after turning on the turnips.

Цель изобретени - расширение функциональных возможностей устройства .The purpose of the invention is to expand the functionality of the device.

Поставленна цель достигаетс тем, что в электронном реле, содержащем подключенный к входным клеммам элемент гальванической разв зки с входным и выходным преобразовател ми, The goal is achieved by the fact that in an electronic relay containing a galvanic isolation element connected to the input terminals with input and output converters,

10 последовательно соединенные операционный усилитель и выходной транзисторный ключ, а также шины питани , входной преобразователь выполнен в виде нагревател , выходной - в виде 10 connected in series an operational amplifier and an output transistor switch, as well as a power supply bus, the input converter is designed as a heater, the output one is

15 батареи термопар, подключенной через резисторы к шинам питани и непосредственно к входам операционного усилител , и введены дополнительные входные клеммы дл выключени и два 15 thermocouple batteries connected through resistors to the power rails and directly to the inputs of the operational amplifier, and additional input terminals were introduced for switching off and two

Claims

There are 20 additional transducer heaters, one of which is located under the hot thermopile splices and is connected to the output power cable and the other to the output of the transistor switch, and the second is located under the cold thermopile terminals and is connected to the additional input terminals. The drawing shows a diagram of an electronic relay. The relay contains a galvanic isolating element in the form of a thermoelectric converter 1, the input converters (heaters) 2 and 3 are placed under the hot spares, and the output converter (heater) / f is located under the cold joints, the heater 2 serving to turn on the electronic relay, the heater 4 for the electronic relay is turned off, and the heater 3 is for keeping it in the on state. The output of the galvanic isolation element 1 is connected to the input of the operational amplifier 5, to the output of which the base of the transistor switch 6 is connected; The electronic relay works as follows. At. switching on the power source and in the absence of control voltage in the heater 2, the amplifier 5 is closed by the voltage obtained at. the passage of current through the thermocouple battery in the galvanic isolation element 1. This voltage should slightly exceed the maximum possible bias voltage for this type of amplifier. If the control voltage is applied to the heater 2, then due to the heating of the hot thermopile junctions, a thermo-emf occurs at its output, sufficient to open the amplifier 5- The heater 3 connected to the output of the transistor switch 6, will flow a current that will additionally heat the hot junctions thermopile. After removing the voltage from the heater 2, the amplifier 5 will remain open due to the heating of the hot junctions by the heater 3. Actuation: the heater 5 is equivalent to the action of the permanent magnets in the remote switches. To turn off the electronic relay, apply the voltage to the heater 4 at the same time. At the same time, the cold junctions will be heated to the same temperature as the hot junctions, the thermo-EMF of the thermopile will be equal to O, the booster 5 and the switch 6 will be turned off. Thus, the proposed electronic relay will significantly expand the functionality of the device, since in a number of cases the switch-on command is issued as a short pulse (0.2-0.5 s) by pressing the self-return button, in the described device this is not required . Claims of the invention An electronic relay comprising an electrically isolated element with input and output converters connected to the input terminals, an operational amplifier and an output transistor switch connected in series, as well as a power bus, in order to expand the functionality of the device, the input converter is made in the form of a heater, output - in the form of a battery of thermocouples, connected through resistors to the power buses and directly to the inputs of the operational amplifier, and introduced Additional input terminals for switching off and two additional converter heaters, one of which is located under the hot thermopile junction and is connected to the corresponding power supply bus by one terminal and the other one to the thermal junction of the thermistor battery and connected to additional input terminals. Sources of information taken into account during the examination 1. Remote switch RPS20.РПС 24, etc. Relay. Selection Guide. The industry standard for GOST.457.000, 1975.,. 2, Electron Disj, 2b December 1976, 20, p. 48-56, fig. 12 (prototype). X