CN206450766U - Three-phase detection circuit - Google Patents
Three-phase detection circuit Download PDFInfo
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- CN206450766U CN206450766U CN201720097021.9U CN201720097021U CN206450766U CN 206450766 U CN206450766 U CN 206450766U CN 201720097021 U CN201720097021 U CN 201720097021U CN 206450766 U CN206450766 U CN 206450766U
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- phase
- resistance
- electric capacity
- photoelectrical coupler
- diode
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a kind of three-phase detection circuit, including three-phase T, three-phase S, three-phase R, zero-power line, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first voltage-regulator diode, the second voltage-regulator diode, the first photoelectrical coupler, the second photoelectrical coupler, triode, the first diode and the second diode being electrically connected to each other.Using the utility model, simple in construction, reliability is high, fast response time, and antijamming capability is good, and phase shortage, the effective detection of anti-phase can be achieved.
Description
Technical field
The utility model is related to electronic technology field, more particularly to a kind of three-phase detection circuit.
Background technology
As shown in figure 1, in conventional three-phase detection circuit, if three phase mains R（First phase）、S（Second phase）、T（Third phase）
When inputting normal, then P1, P2 are closed；If three-phase R, S, T anti-phase, P1, P2 disconnect.But the circuit has one disadvantage in that, if three-phase S
Phase shortage, P1, P2 is still closure, so that pile defection is defective.
The content of the invention
Technical problem to be solved in the utility model is that there is provided a kind of simple in construction, reliability is high, response speed
It hurry up, phase shortage, the effective detection of anti-phase can be achieved in the good three-phase detection circuit of antijamming capability.
In order to solve the above-mentioned technical problem, the utility model provides a kind of three-phase detection circuit, including is electrically connected to each other
Three-phase T, three-phase S, three-phase R, zero-power line, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance,
It is six resistance, the 7th resistance, the 8th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, first steady
Press diode, the second voltage-regulator diode, the first photoelectrical coupler, the second photoelectrical coupler, triode, the first diode and second
Diode.
As the improvement of such scheme, the three-phase T, three-phase S, three-phase R, second resistance, 3rd resistor, the 5th resistance,
Second voltage-regulator diode, the second photoelectrical coupler and zero-power line are interconnected to constitute three-phase lack phase circuit；The three-phase T passes through
5th resistance accesses the second voltage-regulator diode, the second photoelectrical coupler and zero-power line；The three-phase S is accessed by second resistance
Second voltage-regulator diode, the second photoelectrical coupler and zero-power line；The three-phase R accesses the pole of the second voltage stabilizing two by 3rd resistor
Pipe, the second photoelectrical coupler and zero-power line.
As the improvement of such scheme, the three-phase T, three-phase S, three-phase R, the first electric capacity, the second electric capacity, the 3rd electric capacity,
4th electric capacity, first resistor, the 4th resistance, the 6th resistance, the first voltage-regulator diode and the first photoelectrical coupler constitute phase sequence inspection
Slowdown monitoring circuit；The three-phase S enters the first photoelectricity coupling by the 3rd electric capacity, the second electric capacity, the 6th resistance and the first voltage-regulator diode
Clutch, the three-phase R enters the first photoelectrical coupler, described the by first resistor, the 6th resistance and the first voltage-regulator diode
One photoelectrical coupler connects three-phase T by the 4th resistance and passes through the 4th electric capacity and the first capacitance connection three-phase R.
As the improvement of such scheme, the positive pole of first diode is electrically connected with the LED negative poles of the second photoelectrical coupler
Connect, the negative pole of first diode is electrically connected with the LED positive poles of the second photoelectrical coupler.
As the improvement of such scheme, the positive pole of second diode is electrically connected with the LED negative poles of the first photoelectrical coupler
Connect, the negative pole of second diode is electrically connected with the LED positive poles of the first photoelectrical coupler.
As the improvement of such scheme, the base stage of triode colelctor electrode respectively with the second photoelectrical coupler, the 8th
One end electrical connection of resistance and the 5th electric capacity, the emitter stage of the triode is electrically connected with the other end of the 5th electric capacity and earth polar respectively
Connect, the base collector of the triode is electrically connected with the emitter stage of the first photoelectrical coupler, first photoelectrical coupler
Colelctor electrode connects power supply by the 7th resistance.
Implement the beneficial effects of the utility model to be：
The utility model three-phase detection circuit by introduce the first photoelectrical coupler and the second photoelectrical coupler realize phase shortage,
The effective detection of anti-phase, overcomes the shortcoming of prior art.
The utility model passes through three-phase T, three-phase S, three-phase R, second resistance, 3rd resistor, the 5th resistance, the second voltage stabilizing two
Pole pipe, the second photoelectrical coupler and zero-power line are interconnected to constitute three-phase lack phase circuit.If three-phase（Three-phase T, three-phase S and three
Phase R）Normally, then the second photoelectrical coupler is not turned on, triode ON；If three-phase（Three-phase T, three-phase S and three-phase R）Phase shortage, then
Second voltage-regulator diode is turned on, and the second photoelectrical coupler is also switched on, and three-phase detection is output as high level.
The utility model by three-phase T, three-phase S, three-phase R, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity,
First resistor, the 4th resistance, the 6th resistance, the first voltage-regulator diode and the first photoelectrical coupler constitute circuit of testing the phase sequence.If
Three-phase phase-sequence is normal, and the first photoelectrical coupler conducting, three-phase detection is output as low level；If there is anti-phase, the first photoelectric coupling
Device is not turned on, and three-phase detection is output as high level.
Three-phase detection circuit of the present utility model is made of digital circuit, not only simple but also reliable, and fast response time resists dry
Disturb ability good, manufacturing cost is low.
Brief description of the drawings
Fig. 1 is existing three-phase detection circuit；
Fig. 2 is the circuit diagram of the utility model three-phase detection circuit.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type is described in further detail.Only this is stated, the up, down, left, right, before and after of the invention that occurs in the text or will appear from,
The orientation such as inside and outside word, only on the basis of the accompanying drawing of the present invention, it is not the specific restriction to the present invention.
As shown in figure 1, in conventional three-phase detection circuit, if three phase mains R（First phase）、S（Second phase）、T（Third phase）
When inputting normal, then P1, P2 are closed；If three-phase R, S, T anti-phase, P1, P2 disconnect.But the circuit has one disadvantage in that, if three-phase S
Phase shortage, P1, P2 is still closure, so that pile defection is defective.
Referring to Fig. 2, Fig. 2 shows the circuit diagram of the utility model three-phase detection circuit, and it includes three be electrically connected to each other
Phase T, three-phase S, three-phase R, zero-power line, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance
R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity
C4, the 5th electric capacity C5, the first voltage-regulator diode Z1, the second voltage-regulator diode Z2, the first photoelectrical coupler IC1, the second photoelectricity coupling
Clutch IC2, triode Q1, the first diode D1 and the second diode D2.Wherein：
The three-phase T, three-phase S, three-phase R, second resistance R2,3rd resistor R3, the 5th resistance R5, the second voltage-regulator diode
Z2, the second photoelectrical coupler IC2 and zero-power line are interconnected to constitute three-phase lack phase circuit.Specifically, the three-phase T passes through
Five resistance R5 access the second voltage-regulator diode Z2, the second photoelectrical coupler IC2 and zero-power line；The three-phase S passes through the second electricity
Hinder R2 and access the second voltage-regulator diode Z2, the second photoelectrical coupler IC2 and zero-power line；The three-phase R passes through 3rd resistor R3
Access the second voltage-regulator diode Z2, the second photoelectrical coupler IC2 and zero-power line.
If it should be noted that three-phase（Three-phase T, three-phase S and three-phase R）Normally, then the second photoelectrical coupler IC2 is not led
It is logical；If three-phase（Three-phase T, three-phase S and three-phase R）Phase shortage, then the second voltage-regulator diode Z2 conductings, the second photoelectrical coupler IC2
Conducting.
The three-phase T, three-phase S, three-phase R, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4,
One resistance R1, the 4th resistance R4, the 6th resistance R6, the first voltage-regulator diode Z1 and the first photoelectrical coupler IC1 constitute phase sequence inspection
Slowdown monitoring circuit.Specifically, the three-phase S passes through the 3rd electric capacity C3, the second electric capacity C2, the 6th resistance R6 and the first voltage-regulator diode Z1
Into the first photoelectrical coupler IC1, the three-phase R is entered by first resistor R1, the 6th resistance R6 and the first voltage-regulator diode Z1
Enter the first photoelectrical coupler IC1, the first photoelectrical coupler IC1 by the 4th resistance R4 connection three-phase T and by the 4th electricity
Hold C4 and the first electric capacity C1 connection three-phases R.
It should be noted that if phase sequence is normal, the first photoelectrical coupler IC1 is turned on；If there is anti-phase, the first photoelectric coupling
Device IC1 is not turned on.
In addition, the positive pole of the first diode D1 is electrically connected with the second photoelectrical coupler IC2 LED negative poles, described
One diode D1 negative pole is electrically connected with the second photoelectrical coupler IC2 LED positive poles.The positive pole of the second diode D2 and
One photoelectrical coupler IC1 LED negative poles electrical connection, the negative pole of the second diode D2 and the first photoelectrical coupler IC1 LED
Positive pole is electrically connected.The base stage of triode Q1 colelctor electrode respectively with the second photoelectrical coupler IC2, the 8th resistance R8 and the 5th
Electric capacity C5 one end electrical connection, the emitter stage of the triode Q1 is electrically connected with the 5th electric capacity C5 other end and earth polar respectively,
The base collector of the triode Q1 is electrically connected with the first photoelectrical coupler IC1 emitter stage, first photoelectrical coupler
IC1 colelctor electrode passes through the 7th resistance R7 connection power supplies.
From the foregoing, it will be observed that unlike the prior art, the utility model three-phase detection circuit is by introducing the first photoelectricity coupling
Clutch IC1 and the second photoelectrical coupler IC2 realize phase shortage, the effective detection of anti-phase, overcome the shortcoming of prior art.Specifically
Ground, if three-phase（Three-phase T, three-phase S and three-phase R）Normally, then the second photoelectrical coupler IC2 is not turned on, triode Q1 conductings；If three
Phase（Three-phase T, three-phase S and three-phase R）Phase shortage, then the second voltage-regulator diode Z2 conductings, the second photoelectrical coupler IC2 is also switched on, and three
Mutually detection is output as high level；If three-phase phase-sequence is normal, the first photoelectrical coupler IC1 conductings, three-phase detection is output as low level；
If there is anti-phase, the first photoelectrical coupler IC1 is not turned on, and three-phase detection is output as high level.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
It is considered as protection domain of the present utility model.
Claims (6)
1. a kind of three-phase detection circuit, it is characterised in that including the three-phase T being electrically connected to each other, three-phase S, three-phase R, zero-power line,
First resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, first
Electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first voltage-regulator diode, the second voltage-regulator diode, the first light
Electric coupler, the second photoelectrical coupler, triode, the first diode and the second diode.
2. three-phase detection circuit as claimed in claim 1, it is characterised in that the three-phase T, three-phase S, three-phase R, the second electricity
Resistance, 3rd resistor, the 5th resistance, the second voltage-regulator diode, the second photoelectrical coupler and zero-power line are interconnected to constitute three-phase
Phase shortage circuit；
The three-phase T accesses the second voltage-regulator diode, the second photoelectrical coupler and zero-power line by the 5th resistance；
The three-phase S accesses the second voltage-regulator diode, the second photoelectrical coupler and zero-power line by second resistance；
The three-phase R accesses the second voltage-regulator diode, the second photoelectrical coupler and zero-power line by 3rd resistor.
3. three-phase detection circuit as claimed in claim 1, it is characterised in that the three-phase T, three-phase S, three-phase R, the first electricity
Appearance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, first resistor, the 4th resistance, the 6th resistance, the first voltage-regulator diode and first
Photoelectrical coupler constitutes circuit of testing the phase sequence；
The three-phase S enters the first photoelectric coupling by the 3rd electric capacity, the second electric capacity, the 6th resistance and the first voltage-regulator diode
Device, the three-phase R enters the first photoelectrical coupler, described first by first resistor, the 6th resistance and the first voltage-regulator diode
Photoelectrical coupler connects three-phase T by the 4th resistance and passes through the 4th electric capacity and the first capacitance connection three-phase R.
4. three-phase detection circuit as claimed in claim 1, it is characterised in that the positive pole and the second photoelectricity of first diode
The LED negative poles electrical connection of coupler, the negative pole of first diode is electrically connected with the LED positive poles of the second photoelectrical coupler.
5. three-phase detection circuit as claimed in claim 1, it is characterised in that the positive pole and the first photoelectricity of second diode
The LED negative poles electrical connection of coupler, the negative pole of second diode is electrically connected with the LED positive poles of the first photoelectrical coupler.
6. three-phase detection circuit as claimed in claim 1, it is characterised in that the base stage of the triode respectively with the second photoelectricity
One end electrical connection of the colelctor electrode of coupler, the 8th resistance and the 5th electric capacity, the emitter stage of the triode is electric with the 5th respectively
The other end of appearance and earth polar electrical connection, the base collector of the triode are electrically connected with the emitter stage of the first photoelectrical coupler,
The colelctor electrode of first photoelectrical coupler connects power supply by the 7th resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097021.9U CN206450766U (en) | 2017-01-25 | 2017-01-25 | Three-phase detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720097021.9U CN206450766U (en) | 2017-01-25 | 2017-01-25 | Three-phase detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206450766U true CN206450766U (en) | 2017-08-29 |
Family
ID=59667271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720097021.9U Expired - Fee Related CN206450766U (en) | 2017-01-25 | 2017-01-25 | Three-phase detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206450766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196137A (en) * | 2018-01-24 | 2018-06-22 | 广东志高暖通设备股份有限公司 | A kind of three-phase power detection circuit and method |
-
2017
- 2017-01-25 CN CN201720097021.9U patent/CN206450766U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196137A (en) * | 2018-01-24 | 2018-06-22 | 广东志高暖通设备股份有限公司 | A kind of three-phase power detection circuit and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20190125 |