CN204882821U - Killer switch state detection circuitry - Google Patents
Killer switch state detection circuitry Download PDFInfo
- Publication number
- CN204882821U CN204882821U CN201520600683.4U CN201520600683U CN204882821U CN 204882821 U CN204882821 U CN 204882821U CN 201520600683 U CN201520600683 U CN 201520600683U CN 204882821 U CN204882821 U CN 204882821U
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- photoelectrical coupler
- diode
- type triode
- circuit breaker
- pnp type
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Abstract
The utility model belongs to the technical field of power electronic, concretely relates to killer switch state detection circuitry. The utility model discloses a killer switch state detection circuitry, it includes circuit breaker, optoelectronic coupler, PNP type triode, emitting diode and buzzer. The circuit breaker is in the closed condition, and optoelectronic coupler does not switch on, and emitting diode does not work, the buzzer voiceless sound, the circuit breaker is in off -state, and optoelectronic coupler switches on, and emitting diode was bright this moment, and the buzzer is sounded. The utility model discloses with the substituting auxiliary contact auxiliary of simple electronic circuit, the voltage difference at measuring circuit breaker both ends, the design is simple, low cost, can be used to measurings such as circuit breaker, fuse.
Description
Technical field
The utility model belongs to electric and electronic technical field, is specifically related to a kind of circuit breaker switch state testing circuit.
Background technology
In recent years, along with the fast development of science and technology, electrical equipment occupies more and more important position in industrial automation system.In the electric power system of electrical equipment and control system, all need to use protection components and parts to carry out short-circuit protection or heavy overload protection to circuit.Protection components and parts have serial connection overcurrent protection components and parts in circuit, and parallel connection overvoltage protection components and parts in circuit.
Isolating switch can be used to distribute electric energy; infrequently start asynchronous motor; protection is carried out to power circuit and motor etc., can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they, its function is equivalent to Fuse switch and the combination of crossing underheat relay etc.And generally do not need to change parts after disjunction fault current.
Isolating switch is applied in feed circuit or control circuit, and whether the break-make of isolating switch decides circuit and normally work, and also has the effect of the safety of protection circuit and personnel.The switch detection method of conventional circuit breaker: increase extra auxiliary contact and could judge which kind of state it is in.This killer switch detection method not only increases the complicacy of circuit, and can increase the volume of isolating switch, installs also cumbersome.
Utility model content
For the traditional detection method of circuit breaker switch state, the utility model proposes a kind of circuit breaker switch state testing circuit, extra structure need not be increased, only need use the detection that this circuit can realize circuit breaker switch state.Its structure simple, with low cost and can and alarm.
The utility model adopts following technical scheme:
A kind of circuit breaker switch state testing circuit, it comprises isolating switch, photoelectrical coupler, PNP type triode and hummer, the A end of isolating switch connects the input anode of photoelectrical coupler through the first diode and the first resistance, the positive pole of the first diode and negative pole connect A end and first resistance of isolating switch respectively; The B end of isolating switch connects the input cathode of photoelectrical coupler through the second diode and the second resistance, the positive pole of the second diode and negative pole connect the B end of the second resistance and isolating switch respectively; The input end of photoelectrical coupler is parallel with the 3rd diode, and the positive pole of the 3rd diode and negative pole connect input cathode and the input anode of photoelectrical coupler respectively; First output head grounding of photoelectrical coupler, second of photoelectrical coupler exports the base stage of termination PNP type triode, second output terminal of photoelectrical coupler also connects power end through the 3rd resistance and light emitting diode, the emitter of PNP type triode is through the 4th resistance eutral grounding, and the collector of PNP type triode connects power end through hummer.
Further, the emitter of PNP type triode is through capacity earth, and the emitter of PNP type triode connects I/O port.
Further, light emitting diode is red light emitting diodes.
The utility model proposes a kind of circuit breaker switch state testing circuit, for detecting the on off state of isolating switch, and feeding back according to the on off state of isolating switch.The simple electronic circuit of the utility model substitutes auxiliary contact auxiliary, detects the voltage differences at isolating switch two ends, simplicity of design, with low cost, can be used for the detection such as isolating switch, fuse.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of circuit breaker switch state testing circuit.
Embodiment
For further illustrating each embodiment, the utility model provides accompanying drawing.These accompanying drawings are a part for the utility model disclosure, and it is mainly in order to illustrate embodiment, and the associated description of instructions can be coordinated to explain the operation principles of embodiment.Coordinate with reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantage of the present utility model.Assembly in figure not drawn on scale, and similar element numbers is commonly used to assembly like representation class.
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
Consult shown in Fig. 1, a kind of circuit breaker switch state testing circuit of the preferred embodiment of the utility model, it comprises isolating switch K, photoelectrical coupler U1, PNP type triode Q1 and hummer BL.A termination power Vcc, B end of isolating switch K is through load LOAD ground connection.The A end of isolating switch K connects the input anode of photoelectrical coupler U1 through the first diode D1 and the first resistance R1, the positive pole of the first diode D1 and negative pole meet A end and the first resistance R1 of isolating switch K respectively.The B end of isolating switch K connects the input cathode of photoelectrical coupler U1 through the second diode D2 and the second resistance R2, the positive pole of the second diode D2 and negative pole connect the B end of the second resistance R2 and isolating switch K respectively.The input end of photoelectrical coupler U1 is parallel with the 3rd diode D3, and the positive pole of the 3rd diode D3 connects the input cathode of photoelectrical coupler U1.First output head grounding of photoelectrical coupler U1, second of photoelectrical coupler U1 exports the base stage of termination PNP type triode Q1, second output terminal of photoelectrical coupler U1 also connects power end through the 3rd resistance R3 and light emitting diode D4, the emitter of PNP type triode Q1 is through the 4th resistance R4 ground connection, and the collector of PNP type triode Q1 connects power end through hummer BL.The emitter of PNP type triode Q1 is through electric capacity C1 ground connection, and the emitter of PNP type triode Q1 connects I/O port.
When isolating switch K closes, the A end of isolating switch K is identical with the voltage that the B of isolating switch K holds, then the input anode of photoelectrical coupler U1 is identical with the voltage of input cathode, and photoelectrical coupler U1 does not work.The non-conducting of output terminal of photoelectrical coupler U1, light emitting diode D4 and hummer BL all cannot form loop, therefore light emitting diode D4 does not work, and hummer BL does not have sound, and the voltage that I/O port exports is low-voltage.
When isolating switch K disconnects, the A end of isolating switch K is positive voltage, and the B end of isolating switch K is through carrying ground, and the first diode D1, the first resistance R1, photoelectrical coupler U1, the second resistance R2 and the second diode D2 form loop, photoelectrical coupler U1 conducting.The then base earth of PNP type triode Q1, PNP type triode Q1 conducting, light emitting diode D4 is through the 3rd resistance R3 ground connection.Light emitting diode D4 forms loop through the 3rd resistance R3, and hummer BL forms loop through PNP type triode Q1 and the 4th resistance R4, and therefore, light emitting diode D4 is bright, and hummer BL sounds, and the voltage that I/O port exports is high voltage.
It should be noted that, light emitting diode D4 is red light emitting diodes.Those skilled in the art are known, and PNP type triode Q1 also can adopt the PNP type triode of other types, and light emitting diode D4 also can be green or yellow light-emitting diode.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (3)
1. a circuit breaker switch state testing circuit, it comprises isolating switch, photoelectrical coupler, PNP type triode and hummer, it is characterized in that: the A end of described isolating switch connects the input anode of photoelectrical coupler through the first diode and the first resistance, the positive pole of the first diode and negative pole connect A end and first resistance of isolating switch respectively;
The B end of described isolating switch connects the input cathode of photoelectrical coupler through the second diode and the second resistance, the positive pole of the second diode and negative pole connect the B end of the second resistance and isolating switch respectively;
The input end of described photoelectrical coupler is parallel with the 3rd diode, and the positive pole of the 3rd diode and negative pole connect input cathode and the input anode of photoelectrical coupler respectively;
First output head grounding of described photoelectrical coupler, second of photoelectrical coupler exports the base stage of termination PNP type triode, second output terminal of photoelectrical coupler also connects power end through the 3rd resistance and light emitting diode, the emitter of PNP type triode is through the 4th resistance eutral grounding, and the collector of PNP type triode connects power end through hummer.
2. circuit breaker switch state testing circuit as claimed in claim 1, is characterized in that: the emitter of described PNP type triode is through capacity earth, and the emitter of PNP type triode connects I/O port.
3. circuit breaker switch state testing circuit as claimed in claim 1 or 2, is characterized in that: described light emitting diode is red light emitting diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600683.4U CN204882821U (en) | 2015-08-11 | 2015-08-11 | Killer switch state detection circuitry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600683.4U CN204882821U (en) | 2015-08-11 | 2015-08-11 | Killer switch state detection circuitry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204882821U true CN204882821U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520600683.4U Active CN204882821U (en) | 2015-08-11 | 2015-08-11 | Killer switch state detection circuitry |
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| CN (1) | CN204882821U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526003A (en) * | 2017-07-20 | 2017-12-29 | 北京天泰怡和科技有限公司 | Intelligent distribution network automatic analysis system |
| CN108832590A (en) * | 2018-07-13 | 2018-11-16 | 浙江英洛华新能源科技有限公司 | overcurrent protection relay |
| CN109031107A (en) * | 2018-07-13 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
-
2015
- 2015-08-11 CN CN201520600683.4U patent/CN204882821U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526003A (en) * | 2017-07-20 | 2017-12-29 | 北京天泰怡和科技有限公司 | Intelligent distribution network automatic analysis system |
| CN108832590A (en) * | 2018-07-13 | 2018-11-16 | 浙江英洛华新能源科技有限公司 | overcurrent protection relay |
| CN109031107A (en) * | 2018-07-13 | 2018-12-18 | 浙江英洛华新能源科技有限公司 | Detect the electron assistant contact circuit of high-voltage relay contact on-off |
| CN108832590B (en) * | 2018-07-13 | 2023-09-29 | 浙江英洛华新能源科技有限公司 | Overcurrent protection relay |
| CN109031107B (en) * | 2018-07-13 | 2023-10-03 | 浙江英洛华新能源科技有限公司 | Electronic auxiliary contact circuit for detecting on-off of high-voltage relay contact |
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