CN206379712U - A kind of air-conditioner set overload protection arrangement - Google Patents
A kind of air-conditioner set overload protection arrangement Download PDFInfo
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- CN206379712U CN206379712U CN201621398797.6U CN201621398797U CN206379712U CN 206379712 U CN206379712 U CN 206379712U CN 201621398797 U CN201621398797 U CN 201621398797U CN 206379712 U CN206379712 U CN 206379712U
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Abstract
The utility model discloses a kind of air-conditioner set overload protection arrangement, including amplifying circuit, de-noising circuit and MCU, the amplifying circuit, de-noising circuit and MCU are sequentially connected, the amplifying circuit includes photoelectrical coupler T, resistance R1, electric capacity C1, inductance L1 and triode Q1, wherein photoelectrical coupler T input is connected with current sensor, photoelectrical coupler T VCC ends are connected with+5V power supply, photoelectrical coupler T output end is connected with resistance R1 one end, the resistance R1 other end is connected with electric capacity C1 one end, 1 pin of the electric capacity C1 other end respectively with triode Q1, inductance L1 one end and+12V power supplys are connected, the inductance L1 other end is connected to triode Q1 3 pins and resistance R3 one end.The utility model can be detected accurately to circuital current, so that whether accurate decision circuitry overloads, and can eliminate impurity signal, it is to avoid influence judged result, simple in construction, easy to use, cost is low.
Description
Technical field
The utility model is related to overload protection technical field, more particularly to a kind of air-conditioner set overload protection arrangement.
Background technology
Air-conditioner set overload protection arrangement is to access the load excessive of circuit for air-conditioner set and cause power-supply device certainly
The equipment that dynamic circuit breaker opens power supply, with the development of science and technology people have higher requirement to overload protection arrangement.
Existing overload protection arrangement be mostly by the electric current in current sensor monitoring circuit come decision circuitry whether
Overload, but can be interfered in the monitoring signals of current sensor and there is impurity signal, judged result is easily influenceed, and not
The accuracy of judgement can be improved, therefore, is used to solve the above problems we have proposed a kind of air-conditioner set overload protection arrangement.
Utility model content
The purpose of this utility model is and a kind of air-conditioner set mistake proposed in order to solve shortcoming present in prior art
Carry protection device.
To achieve these goals, the utility model employs following technical scheme：
A kind of air-conditioner set overload protection arrangement, including amplifying circuit, de-noising circuit and MCU, the amplifying circuit, de-noising
Circuit and MCU are sequentially connected, and the amplifying circuit includes photoelectrical coupler T, resistance R1, electric capacity C1, inductance L1 and triode Q1,
Wherein photoelectrical coupler T input is connected with current sensor, and photoelectrical coupler T VCC ends are connected with+5V power supply, light
Electric coupler T output end is connected with resistance R1 one end, and the resistance R1 other end is connected with electric capacity C1 one end, electric capacity C1's
The other end is connected with triode Q1 1 pin, inductance L1 one end and+12V power supplys respectively, and the inductance L1 other end is connected respectively
There are triode Q1 3 pins and resistance R3 one end, triode Q1 2 pins are connected with resistance R2 one end, and resistance R2's is another
One end is connected to triode Q2 2 pins and resistance R6 one end, and the resistance R6 other end is connected with MCU, three pole
Pipe Q2 1 pin is connected with resistance R4 one end, and the resistance R4 other end is connected to electric capacity C2 one end and resistance R5
One end, the other end ground connection of the electric capacity C2, and resistance the R5 other end are connected with triode Q3 1 pin, the triode
Q3 3 pins and triode Q2 3 pins are grounded, and triode Q3 2 pins be connected to resistance R3 the other end and
Resistance R7 one end, the other end of the resistance R7 is connected with MCU, and the output end of the MCU is connected to the one of resistance R8
The one end at end, relay Q4 3 pins, diode D negative pole and inductance L2, the other end of the resistance R8 is connected with relay
Q4 1 pin, and relay Q4 2 pins be connected to relay Q4 3 pins and+12V power supplys, the inductance L2's is another
One end is connected to resistance R9 one end and OUT1 ports, and the positive pole of the diode D and the resistance R9 other end are grounded,
And it is respectively connected with OUT2 ports.
It is preferred that, the de-noising circuit includes resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, three poles
Pipe Q2, triode Q3 and electric capacity C2.
It is preferred that, the resistance R8, relay Q4, diode D, inductance L2, resistance R9, OUT1 ports and OUT2 ports structure
Into on-off circuit, and MCU is connected by on-off circuit with air-conditioner set.
It is preferred that, the current sensor is connected with air-conditioner set.
It is preferred that, the resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8 and
Resistance R9 resistance is respectively 10K Ω, 15K Ω, 20K Ω, 10K Ω, 20K Ω, 15K Ω, 25K Ω, 15K Ω and 10K Ω.
It is preferred that, electric capacity C1 and electric capacity C2 capacitance are respectively 20 μ F and 40 μ F.
In the utility model, a kind of air-conditioner set overload protection arrangement can amplify current sense by amplifying circuit
The detection signal of device, improves detection accuracy, can eliminate the impurity signal in detection signal by de-noising circuit, it is to avoid influence
MCU judged result, can be to send a signal to MCU in circuit overloads by current sensor, being capable of controlling switch by MCU
The break-make of circuit, so as to disconnect the connection of air-conditioner set and main power source, it is to avoid air-conditioner set is damaged, and the utility model can be accurate
Circuital current is detected so that whether accurate decision circuitry overloads, and impurity signal can be eliminated, it is to avoid influence is sentenced
Disconnected result, simple in construction, easy to use, cost is low.
Brief description of the drawings
Fig. 1 be the utility model proposes a kind of air-conditioner set overload protection arrangement circuit theory schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.
Reference picture 1, a kind of air-conditioner set overload protection arrangement, including amplifying circuit, de-noising circuit and MCU, the amplification
Circuit, de-noising circuit and MCU are sequentially connected, the amplifying circuit include photoelectrical coupler T, resistance R1, electric capacity C1, inductance L1 and
Triode Q1, wherein photoelectrical coupler T input are connected with current sensor, and photoelectrical coupler T VCC ends are connected with+5V
Power supply, photoelectrical coupler T output end is connected with resistance R1 one end, and the resistance R1 other end connects with electric capacity C1 one end
Connect, the electric capacity C1 other end is connected with triode Q1 1 pin, inductance L1 one end and+12V power supplys respectively, and inductance L1's is another
One end is connected to triode Q1 3 pins and resistance R3 one end, and triode Q1 2 pins are connected with the one of resistance R2
End, the resistance R2 other end is connected to triode Q2 2 pins and resistance R6 one end, resistance the R6 other end and MCU
Connection, 1 pin of the triode Q2 is connected with resistance R4 one end, and the resistance R4 other end is connected to the one of electric capacity C2
End and resistance R5 one end, the other end ground connection of the electric capacity C2, and resistance the R5 other end are connected with the 1 of triode Q3 and drawn
Pin, 3 pins of the triode Q3 and triode Q2 3 pins are grounded, and triode Q3 2 pins are connected to resistance
The R3 other end and resistance R7 one end, the other end of the resistance R7 are connected with MCU, and the output end of the MCU is connected respectively
There are resistance R8 one end, relay Q4 3 pins, diode D negative pole and inductance L2 one end, the other end of the resistance R8
It is connected with relay Q4 1 pin, and relay Q4 2 pins are connected to relay Q4 3 pins and+12V power supplys, institute
The other end for stating inductance L2 is connected to resistance R9 one end and OUT1 ports, the positive pole of the diode D and resistance R9's
The other end is grounded, and is respectively connected with OUT2 ports, and a kind of air-conditioner set overload protection arrangement can by amplifying circuit
Amplify the detection signal of current sensor, improve detection accuracy, the impurity in detection signal can be eliminated by de-noising circuit
Signal, it is to avoid influence MCU judged result, can be to send a signal to MCU in circuit overloads by current sensor, pass through
MCU is capable of the break-make of controlling switch circuit, so as to disconnect the connection of air-conditioner set and main power source, it is to avoid air-conditioner set is damaged, this
Utility model can be detected accurately to circuital current, so that whether accurate decision circuitry overloads, and can be eliminated miscellaneous
Matter signal, it is to avoid influence judged result, simple in construction, easy to use, cost is low.
In the utility model, the de-noising circuit includes resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance
R7, triode Q2, triode Q3 and electric capacity C2, the resistance R8, relay Q4, diode D, inductance L2, resistance R9, OUT1 ends
Mouth and OUT2 ports constitute on-off circuit, and MCU is connected by on-off circuit with air-conditioner set, the current sensor and air-conditioning
Unit is connected, the resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8 and resistance R9
Resistance be respectively 10K Ω, 15K Ω, 20K Ω, 10K Ω, 20K Ω, 15K Ω, 25K Ω, 15K Ω and 10K Ω, electric capacity C1 and electricity
The capacitance for holding C2 is respectively 20 μ F and 40 μ F, and a kind of air-conditioner set overload protection arrangement can amplify electricity by amplifying circuit
The detection signal of flow sensor, improves detection accuracy, can eliminate the impurity signal in detection signal by de-noising circuit, keep away
Exempt to influence MCU judged result, can be to send a signal to MCU in circuit overloads by current sensor, can be controlled by MCU
The break-make of on-off circuit processed, so as to disconnect the connection of air-conditioner set and main power source, it is to avoid air-conditioner set is damaged, the utility model energy
It is enough that accurately circuital current is detected, so that whether accurate decision circuitry overloads, and impurity signal can be eliminated, it is to avoid
Judged result is influenceed, simple in construction, easy to use, cost is low.
In the utility model, current sensor is detected to the electric current in circuit, then sends detection signal to amplification
Circuit, amplifying circuit is amplified to detection signal, then transmits the detection signal after amplification to de-noising circuit, de-noising circuit
The impurity signal in detection signal is eliminated, then the detection signal for eliminating impurity signal is transmitted to MCU, MCU and believed according to detection
The break-make of number controlling switch circuit, so as to be switched on or switched off the connection of air-conditioner set and main power source, protection is provided to air-conditioner set.
It is described above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent substitution or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (6)
1. a kind of air-conditioner set overload protection arrangement, including amplifying circuit, de-noising circuit and MCU, it is characterised in that the amplification
Circuit, de-noising circuit and MCU are sequentially connected, the amplifying circuit include photoelectrical coupler T, resistance R1, electric capacity C1, inductance L1 and
Triode Q1, wherein photoelectrical coupler T input are connected with current sensor, and photoelectrical coupler T VCC ends are connected with+5V
Power supply, photoelectrical coupler T output end is connected with resistance R1 one end, and the resistance R1 other end connects with electric capacity C1 one end
Connect, the electric capacity C1 other end is connected with triode Q1 1 pin, inductance L1 one end and+12V power supplys respectively, and inductance L1's is another
One end is connected to triode Q1 3 pins and resistance R3 one end, and triode Q1 2 pins are connected with the one of resistance R2
End, the resistance R2 other end is connected to triode Q2 2 pins and resistance R6 one end, resistance the R6 other end and MCU
Connection, 1 pin of the triode Q2 is connected with resistance R4 one end, and the resistance R4 other end is connected to the one of electric capacity C2
End and resistance R5 one end, the other end ground connection of the electric capacity C2, and resistance the R5 other end are connected with the 1 of triode Q3 and drawn
Pin, 3 pins of the triode Q3 and triode Q2 3 pins are grounded, and triode Q3 2 pins are connected to resistance
The R3 other end and resistance R7 one end, the other end of the resistance R7 are connected with MCU, and the output end of the MCU is connected respectively
There are resistance R8 one end, relay Q4 3 pins, diode D negative pole and inductance L2 one end, the other end of the resistance R8
It is connected with relay Q4 1 pin, and relay Q4 2 pins are connected to relay Q4 3 pins and+12V power supplys, institute
The other end for stating inductance L2 is connected to resistance R9 one end and OUT1 ports, the positive pole of the diode D and resistance R9's
The other end is grounded, and is respectively connected with OUT2 ports.
2. a kind of air-conditioner set overload protection arrangement according to claim 1, it is characterised in that the de-noising circuit includes
Resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, triode Q2, triode Q3 and electric capacity C2.
3. a kind of air-conditioner set overload protection arrangement according to claim 1, it is characterised in that the resistance R8, relay
Device Q4, diode D, inductance L2, resistance R9, OUT1 ports and OUT2 ports constitute on-off circuit, and MCU by on-off circuit with
Air-conditioner set is connected.
4. a kind of air-conditioner set overload protection arrangement according to claim 1, it is characterised in that the current sensor with
Air-conditioner set is connected.
5. a kind of air-conditioner set overload protection arrangement according to claim 1, it is characterised in that the resistance R1, resistance
R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8 and resistance R9 resistance be respectively 10K Ω, 15K Ω,
20K Ω, 10K Ω, 20K Ω, 15K Ω, 25K Ω, 15K Ω and 10K Ω.
6. a kind of air-conditioner set overload protection arrangement according to claim 1, it is characterised in that electric capacity C1's and electric capacity C2
Capacitance is respectively 20 μ F and 40 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398797.6U CN206379712U (en) | 2016-12-19 | 2016-12-19 | A kind of air-conditioner set overload protection arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398797.6U CN206379712U (en) | 2016-12-19 | 2016-12-19 | A kind of air-conditioner set overload protection arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206379712U true CN206379712U (en) | 2017-08-04 |
Family
ID=59406368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621398797.6U Expired - Fee Related CN206379712U (en) | 2016-12-19 | 2016-12-19 | A kind of air-conditioner set overload protection arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206379712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557255A (en) * | 2018-11-15 | 2019-04-02 | 广东精科环境科技有限公司 | A kind of intelligence SOIL GAS detection method and system |
-
2016
- 2016-12-19 CN CN201621398797.6U patent/CN206379712U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557255A (en) * | 2018-11-15 | 2019-04-02 | 广东精科环境科技有限公司 | A kind of intelligence SOIL GAS detection method and system |
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| 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: 20170804 Termination date: 20201219 |