CN208063168U - A kind of high voltage isolation interlocking switch circuit - Google Patents
A kind of high voltage isolation interlocking switch circuit Download PDFInfo
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- CN208063168U CN208063168U CN201820668704.XU CN201820668704U CN208063168U CN 208063168 U CN208063168 U CN 208063168U CN 201820668704 U CN201820668704 U CN 201820668704U CN 208063168 U CN208063168 U CN 208063168U
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Abstract
The utility model belongs to control relay circuit technical field, interlocking switch circuit is isolated more particularly to a kind of high voltage, agent structure includes first input end, first resistor, the first optocoupler, second resistance, 3rd resistor, power supply, the first output end, the second input terminal, the 4th resistance, the second optocoupler, the 5th resistance and second output terminal, using structure based on optocoupler and resistance, signal provides level output in order to control, and the process of level output is：First input end input high level, the cathode of second input terminal input low level, the just extremely high level of the first optocoupler, the first optocoupler is low level, the cathode of second optocoupler is high level, the just extremely low level of second optocoupler, at this point, the first optocoupler is connected, the transmitting of first optocoupler extremely high level, first output end exports high level, and the second optocoupler is by second output terminal exports low level；Its is simple and compact for structure, and security performance is reliable, convenient for making and safeguarding, low processing cost, use easy to spread.
Description
Technical field：
The utility model belongs to control relay circuit technical field, and in particular to a kind of high voltage isolation interlock switch electricity
Road, the high voltage control low pressure for being suitable for table note relay breaker tripping and closing control signal transmission system are isolated operating circuit, are believed in order to control
Number provide level output.
Background technology：
Relay control system is generally made of the part such as master control electrical apparatus, contactor, relay and conducting wire, can be relay
Device regards electromagnetic switch as, to coil plus a voltage, generates a magnetic field, which makes the contact closure of relay, contact quilt
Regard switch as, they allow electric current to flow through, to which main circuit to be closed；In relay control system, a control is completed
Task processed, need to be by conducting wire by various input equipments (button, control switch, limit switch, sensor etc.) and several intermediate relays
The control circuit with certain logic of the compositions such as device, the time relay, counting relay is connected, and then passes through output equipment
(executive components such as contact net, solenoid valve) go the action of control controlled device or operation, this control system to be referred to as wiring control system
System, the logic realized are known as hard wired logic, that is, input and realized by " wiring program " to the control action of output,
In this control system, the change or modification that control requirement must be completed by changing the hardwire of control circuit.
The mutual lock control of a kind of multiple-channel output modular power source output voltage isolation disclosed in Chinese patent 201611124346.8
Circuit, main power circuit include modular power source power conversion circuit 1#, power conversion circuit 2#, and multiple-channel output modular power source shares
Inlet highway and input filter generate different output voltages by different power conversion circuit transformation, also, multichannel is defeated
Go out voltage realization to be electrically isolated completely to.Output voltage interlocking control circuit is to detect output voltage signal in order to control all the way, is passed through
Optocoupler controls the control circuit of another way out-put supply, realizes the interlocking purpose of output voltage；Chinese patent
A kind of control relay circuit of band isolation, the base stage of triode Q1 disclosed in 201520221803.X are connected to the another of resistance R2
On one end, the base stage of triode Q2 is connected on the other end of resistance R3, and the base stage of triode Q4 is connected to the hair of triode Q3
On emitter-base bandgap grading, the collector of triode Q3 is connected on one end of resistance R4, and the base stage of triode Q3 is connected to one end of resistance R5
On, the other end of resistance R4 is connected on 5V supply terminals, and the other end of resistance R5 is connected on relay combined floodgate end；Three poles
The base stage of pipe Q6 is connected on the emitter of triode Q5, and the collector of triode Q5 is connected on one end of resistance R6, three poles
The base stage of pipe Q5 is connected on one end of resistance R7, and the other end of resistance R6 is connected on 5V supply terminals, and resistance R7's is another
One end is connected to relay and operates a switch on end；A kind of control relay circuit disclosed in Chinese patent 201520247893.X, including
Resistance R1, resistance R2, capacitance C1, triode VT1, diode D1 and relay K, which is characterized in that the one end the resistance R1 connects
Input signal Ui is met, the resistance R1 other ends are separately connected resistance R2, resistance R3 and ground capacity C1, and the resistance R2 other ends connect respectively
Connecting resistance R4, resistance R6, resistance R7, switch S and triode VT4 emitters, the resistance R3 other ends connecting triode VT1 bases
Pole, triode VT1 collectors are separately connected the resistance R4 other ends and triode VT2 base stages, and triode VT1 emitters are separately connected
Ground resistance R5 and triode VT2 emitters, triode VT2 collectors are separately connected the resistance R6 other ends and diode D1 is negative
Pole, diode D1 anode connecting triode VT3 base stages, triode VT3 emitters ground connection, triode VT3 collectors are separately connected
The resistance R7 other ends, capacitance C2 and resistance R8, the capacitance C2 other ends are being separately connected relay K coils and ground connection diode D2 just
Pole, relay K coil other end connecting triode VT4 collectors, triode VT4 base stages connect the resistance R8 other ends, described to open
Close S other ends connection power supply VCC；A kind of relay control electricity reducing power consumption disclosed in Chinese patent 201510329470.7
Road.It includes photoelectrical coupler, first resistor, second resistance, 3rd resistor, the 4th resistance, the first triode, the two or three pole
Pipe, the first capacitance, the second capacitance, zener diode, third capacitance, relay coil, diode, light emitting diode and the 5th electricity
Resistance, an input terminal of photoelectrical coupler connect control signal by first resistor, another input end grounding, an output termination
Bias voltage, another output end connect the collector of the base stage and the second diode of the first triode by second resistance, and first
The emitter of triode couples the collector of the second triode, the collector of the first triode by zener diode in parallel and
One end of third capacitance contact relay coil and the anode of diode, the other end of relay coil and the cathode of diode connect electricity
Source voltage, light emitting diode and the 5th resistance series connection after with diodes in parallel；One disclosed in Chinese patent 201520950266.2
Kind multicircuit relay control circuit includes power circuit, single-chip core core circuit, relay drive circuit, 232 serial communications
Interface circuit and 485 communication interface circuits, the power circuit, the relay drive circuit, 232 serial communication interface
Circuit and 485 communication interface circuit are integrated on one piece of pcb board, and the single-chip core core circuit is integrated in another piece
On pcb board, two pieces of pcb boards are by arranging needle and row's seat plug connection；It is a kind of disclosed in Chinese patent 201621300619.5
The driving power that electromagnetic relay control circuit includes the driving circuit being connected with enable signal and is connected with the driving circuit
And electromagnetic relay, it is characterised in that：The driving circuit includes the delay and running module being connected with enable signal, is driven with delay
Maintenance drive module dynamic model block connected actuation drive module and be connected with driving power and electromagnetic relay, the maintenance
Drive module, actuation drive module and delay and running module are respectively equipped with switching tube, and when being attracted the electromagnetic relay, institute
State the switching tube conducting for being attracted drive module and maintaining drive module, in electromagnetic relay maintains attracting process, the delay
Drive module and the switching tube conducting for maintaining drive module；A kind of double relay control disclosed in Chinese patent 201720154257.1
Circuit processed includes first resistor；First relay, the first pin are connected with one end of first resistor, the second pin and first
The other end of resistance connects；First diode, anode are connect with the 4th pin of the first relay, cathode and second voltage
Source connects；First triode, first end are connect with the anode of the first diode, and third end is connected with load；Second relay
The other end of device, the first pin and first resistor connects, and the second pin is connect with first voltage source, third pin and institute
State the second voltage source connection；Second diode, anode are connect with the 4th pin of the second relay, cathode and second voltage
Source connects；Second triode, first end are connect with the anode of the second diode, second end ground connection, third end and load
Connection；The control of circuit and relay in the prior art that the above patent is related to is that control signal is transmitted directly to control
What MCU was realized, anti-external influence factors ability is weaker, while because control MCU and external relay are direct-connected, the protection of external high pressure
Ability is weaker, if external high pressure flows into inside control MCU, entire circuit will damage, and external disturbance is believed when control signal transmission
Number small can use other circuit for eliminating, and when interference signal is too big, error signal is still able to enter control MCU, works as data
When having error signal close to switch, will multiple data, cause to malfunction so that abnormal breaker tripping and closing phenomenon, shadow occurs in relay
The normal work for ringing relay generates the logout of mistake.Therefore, a kind of high voltage isolation interlocking switch circuit is researched and developed, is prevented
The only generation of wrong time improves the accuracy of relay operation, there is very much social value and economic benefit.
Invention content：
The purpose of the utility model is to overcome disadvantages of the existing technology, design a kind of high voltage isolation interlock switch
Circuit, the high voltage control low pressure for table note relay breaker tripping and closing control signal transmission system is isolated in operating circuit, to improve
The accuracy of relay operation.
To achieve the goals above, the agent structure of the utility model includes first input end, first resistor, the first light
Coupling, second resistance, 3rd resistor, power supply, the first output end, the second input terminal, the 4th resistance, the second optocoupler, the 5th resistance and
Second output terminal；First input end and 1 foot of first resistor connect, and 2 feet of first resistor are connect with the anode of the first optocoupler, the
The collector of one optocoupler and 2 feet of second resistance connect, and the emitter of the first optocoupler and 1 foot of 3rd resistor connect, the second electricity
1 foot of resistance is connect with power supply, and 2 feet of 3rd resistor are connect with the first output end, and 1 foot of the second input terminal and the 4th resistance connects
It connects, 2 feet of the 4th resistance are connect with the anode of the second optocoupler, after the collector of the second optocoupler is connect with the collector of the first optocoupler
It is connect with 2 feet of second resistance, the emitter of the second optocoupler is connect with 1 foot of the 5th resistance, 2 feet of the 5th resistance and second defeated
Outlet connects, and first input end is also connect with the cathode of the second optocoupler, and the second input terminal is also connect with the cathode of the first optocoupler.
Compared with prior art, using structure based on optocoupler and resistance, signal provides level to the utility model in order to control
Output, the process that level exports are：First input end input high level, the second input terminal input low level, the first optocoupler is just
The cathode of extremely high level, the first optocoupler is low level, and the cathode of the second optocoupler is high level, the just extremely low electricity of the second optocoupler
Flat, at this point, the first optocoupler is connected, the transmitting extremely high level of the first optocoupler, the first output end exports high level, and the second optocoupler is cut
Extremely, second output terminal exports low level；Its is simple and compact for structure, and security performance is reliable, and convenient for making and safeguarding, processing cost is low
It is honest and clean, use easy to spread.
Description of the drawings：
Fig. 1 is the control circuit agent structure principle schematic of the utility model.
Specific implementation mode：
The utility model is described further by way of example and in conjunction with the accompanying drawings.
Embodiment 1：
The agent structure for the high voltage isolation interlocking switch circuit that the present embodiment is related to includes the 1, first electricity of first input end
Hinder the 2, first optocoupler 3, second resistance 4,3rd resistor 5, the 6, first output end 7 of power supply (VCC), the second input terminal 8, the 4th resistance
9, the second optocoupler 10, the 5th resistance 11 and second output terminal 12；First input end 1 is connect with 1 foot of first resistor 2, the first electricity
2 feet of resistance 2 are connect with the anode of the first optocoupler 3, and the collector of the first optocoupler 3 is connect with 2 feet of second resistance 4, the first optocoupler 3
Emitter connect with 1 foot of 3rd resistor 5,1 foot of second resistance 4 is connect with power supply 6,2 feet of 3rd resistor 5 and first defeated
Outlet 7 connects, and the second input terminal 8 is connect with 1 foot of the 4th resistance 9, and the anode of 2 feet of the 4th resistance 9 and the second optocoupler 10 is even
It connects, the collector of the second optocoupler 10 is connect after being connect with the collector of the first optocoupler 3 with 2 feet of second resistance 4, the second optocoupler 10
Emitter connect with 1 foot of the 5th resistance 11,2 feet of the 5th resistance 11 are connect with second output terminal 12, first input end 1 also
It is connect with the cathode of the second optocoupler 10, the second input terminal 8 is also connect with the cathode of the first optocoupler 3.
The first input end (input_1) 1 that the present embodiment the is related to electricity different from 8 output of the second input terminal (input_2)
Usually effectively；First resistor (R1) 2, second resistance (R2) 4, the 5, the 4th resistance (R4) 9 of 3rd resistor (R3) and the 5th resistance
(R5) 11 include 1 foot and 2 feet, and second resistance 4 is pull-up resistor；First optocoupler (DW1) 3 and the second optocoupler (DW2) 10 wrap
Include anode+, cathode-, collector C and emitter E, the first optocoupler DW1 and the second optocoupler DW2 normalities be in high level.
When the high voltage isolation interlocking switch circuit operation that the present embodiment is related to, input_1 input high levels, input_2
The cathode of input low level, the just extremely high level of the first optocoupler DW1, the first optocoupler DW1 is low level, the second optocoupler DW2's
Cathode is high level, the just extremely low level of the second optocoupler DW2, at this point, the first optocoupler DW1 conductings, the transmitting of the first optocoupler DW1
Extremely high level, the first output end (output_1) 7 export high level, and the second optocoupler DW2 is by second output terminal (output_
1) 12 output low level；When input_1 input low levels, input_2 input high levels, as a result on the contrary.
Claims (1)
1. interlocking switch circuit is isolated in a kind of high voltage, it is characterised in that agent structure includes first input end, first resistor, the
One optocoupler, second resistance, 3rd resistor, power supply, the first output end, the second input terminal, the 4th resistance, the second optocoupler, the 5th electricity
Resistance and second output terminal；First input end and 1 foot of first resistor connect, and 2 feet of first resistor and the anode of the first optocoupler are even
It connecing, the collector of the first optocoupler and 2 feet of second resistance connect, and the emitter of the first optocoupler and 1 foot of 3rd resistor connect, the
1 foot of two resistance is connect with power supply, and 2 feet of 3rd resistor are connect with the first output end, 1 foot of the second input terminal and the 4th resistance
Connection, 2 feet of the 4th resistance are connect with the anode of the second optocoupler, and the collector of the second optocoupler is connect with the collector of the first optocoupler
It is connect afterwards with 2 feet of second resistance, the emitter of the second optocoupler is connect with 1 foot of the 5th resistance, 2 feet and second of the 5th resistance
Output end connects, and first input end is also connect with the cathode of the second optocoupler, and the second input terminal is also connect with the cathode of the first optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820668704.XU CN208063168U (en) | 2018-05-07 | 2018-05-07 | A kind of high voltage isolation interlocking switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820668704.XU CN208063168U (en) | 2018-05-07 | 2018-05-07 | A kind of high voltage isolation interlocking switch circuit |
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| Publication Number | Publication Date |
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| CN208063168U true CN208063168U (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820668704.XU Active CN208063168U (en) | 2018-05-07 | 2018-05-07 | A kind of high voltage isolation interlocking switch circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660239A (en) * | 2019-01-14 | 2019-04-19 | 武汉盛硕电子有限公司 | A kind of interlock circuit and application |
| CN110535458A (en) * | 2019-07-16 | 2019-12-03 | 青岛乾程科技股份有限公司 | A kind of signal rate Amplification and insulation transmission circuit |
| CN111463894A (en) * | 2020-04-27 | 2020-07-28 | 湖南三一智能控制设备有限公司 | Power supply switching circuit |
| CN112234978A (en) * | 2020-10-30 | 2021-01-15 | 南京甄视智能科技有限公司 | Switching value output circuit |
| CN114938316A (en) * | 2022-05-20 | 2022-08-23 | 淮安威灵电机制造有限公司 | Isolated asynchronous communication circuit and method of household appliance and household appliance |
-
2018
- 2018-05-07 CN CN201820668704.XU patent/CN208063168U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109660239A (en) * | 2019-01-14 | 2019-04-19 | 武汉盛硕电子有限公司 | A kind of interlock circuit and application |
| CN109660239B (en) * | 2019-01-14 | 2024-02-13 | 武汉盛硕电子有限公司 | Interlocking circuit and application |
| CN110535458A (en) * | 2019-07-16 | 2019-12-03 | 青岛乾程科技股份有限公司 | A kind of signal rate Amplification and insulation transmission circuit |
| CN111463894A (en) * | 2020-04-27 | 2020-07-28 | 湖南三一智能控制设备有限公司 | Power supply switching circuit |
| CN111463894B (en) * | 2020-04-27 | 2023-03-28 | 湖南三一智能控制设备有限公司 | Power supply switching circuit |
| CN112234978A (en) * | 2020-10-30 | 2021-01-15 | 南京甄视智能科技有限公司 | Switching value output circuit |
| CN112234978B (en) * | 2020-10-30 | 2022-08-05 | 南京甄视智能科技有限公司 | Switching value output circuit |
| CN114938316A (en) * | 2022-05-20 | 2022-08-23 | 淮安威灵电机制造有限公司 | Isolated asynchronous communication circuit and method of household appliance and household appliance |
| CN114938316B (en) * | 2022-05-20 | 2023-09-22 | 淮安威灵电机制造有限公司 | Isolation asynchronous communication circuit and method of household appliance and household appliance |
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