CN217009078U - Circuit of electronic circuit breaker with continuously adjustable setting parameters and visual data - Google Patents
Circuit of electronic circuit breaker with continuously adjustable setting parameters and visual data Download PDFInfo
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- CN217009078U CN217009078U CN202123454803.9U CN202123454803U CN217009078U CN 217009078 U CN217009078 U CN 217009078U CN 202123454803 U CN202123454803 U CN 202123454803U CN 217009078 U CN217009078 U CN 217009078U
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Abstract
The utility model relates to a circuit of an electronic circuit breaker with continuously adjustable setting parameters and visible data, wherein the circuit breaker is a three-phase circuit breaker, the circuit of the three-phase circuit breaker is provided with a signal processing circuit and a power supply processing circuit, the signal processing circuit comprises an A-phase circuit, a B-phase circuit, a C-phase circuit, a main chip U1 and a liquid crystal display driving circuit, each phase of circuit is provided with a current sampling circuit and a voltage sampling circuit, the current sampling circuit converts a current signal into a voltage signal, the voltage sampling circuit is used for acquiring the voltage signal and processing the voltage signal to acquire an access detection signal of an ADC (analog to digital converter) interface of the main chip U1, and the detection signal drives the liquid crystal display driving circuit to perform liquid crystal display and control output after being operated and processed by the main chip U1; the power supply processing circuit comprises a rectifying circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit. The product continuously adjusts the setting current and the delayed breaking time of the circuit breaker through the button, and the data is visual and intuitive.
Description
Technical Field
The utility model relates to a circuit of an electronic circuit breaker with continuously adjustable setting parameters and visible data.
Background
In the prior art, a common electronic circuit breaker adjusts current and time delay through knob step difference, and the defects that the set current and time delay breaking time of an unadjustable circuit breaker cannot be adjusted, and data cannot be visualized and visualized exist.
Disclosure of Invention
The purpose of the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides the circuit of the electronic circuit breaker with continuously adjustable setting parameters and visual data.
The technical scheme of the utility model is as follows: a circuit of an electronic circuit breaker with continuously adjustable setting parameters and visible data is disclosed, wherein the circuit breaker is a three-phase circuit breaker, the circuit of the three-phase circuit breaker is provided with a signal processing circuit and a power supply processing circuit,
the signal processing circuit comprises an A-phase circuit, a B-phase circuit, a C-phase circuit, a main chip U1 and a liquid crystal display driving circuit,
each phase circuit is provided with a current sampling circuit and a voltage sampling circuit,
a current sampling circuit for converting the current signal into a voltage signal,
the voltage sampling circuit is used for obtaining a voltage signal and processing the voltage signal to obtain an access detection signal of an ADC interface of the main chip U1,
after the detection signal is subjected to operation processing of the main chip U1, the detection signal drives a liquid crystal display driving circuit to perform liquid crystal display and control output;
the power supply processing circuit comprises a rectifying circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit,
a rectifying circuit for rectifying the three-phase current signals to obtain DC signals,
the first voltage regulator circuit is used for stabilizing the DC signal to obtain the power voltage of DC12V,
and the second voltage stabilizing circuit is used for stabilizing the power supply voltage of the DC12V to obtain the power supply VDD required by the main chip U1.
Preferably, the current sampling circuit comprises a rectifier bridge D1 and a resistor R1, and obtains a current signal from the secondary side of the current transformer, the voltage sampling comprises capacitors R2 and R18, a capacitor C1, and an operational amplifier, after obtaining the current signal from the secondary side of the current transformer of each phase circuit, the current signal is converted into a voltage signal through the rectifier bridge D1 and the resistor R1, then the voltage signal is limited through the capacitors R2 and R18, the capacitor C1 filters the voltage signal, and an input signal is inverted through the U1 end of the operational amplifier, and an access detection signal of the ADC interface of the main chip U1 is obtained after amplification.
Preferably, the rectifier circuit comprises rectifier bridges D1, D2 and D3, the first voltage stabilizing circuit comprises triodes Q2 and Q3 and voltage-stabilizing tubes ZD1 and ZD2, the second voltage stabilizing circuit comprises diodes D8 and D9 and voltage-stabilizing blocks U3 and U2, the three-phase current signals are respectively rectified by the rectifier bridges D1, D2 and D3 to obtain direct current signals, voltage-stabilizing is carried out by the triodes Q2 and Q3 and the voltage-stabilizing tubes ZD1 and ZD2 to obtain DC12V power supply voltage, and then the power supply VDD required by the main chip U1 is obtained by the diodes D8 and D9 and the voltage-stabilizing blocks U3 and U2.
Preferably, the master chip U1 may use the PIC24FJ128GA 306.
Compared with other circuit breakers, the utility model has the following beneficial effects:
1. the product continuously adjusts the set current and the delayed breaking time of the circuit breaker through the button, and data is visual;
2. the circuit working power supply is obtained through the induction processing of the current transformer, so that the switch is convenient to debug without an external auxiliary power supply;
3. the sampling current precision is extremely high and the error is extremely small through a specially-made high-precision current transformer;
4. the circuit breaker has three-section protection functions of current overload long-delay protection, short-circuit short-delay protection and short-circuit instantaneous protection;
5. the RS485 communication port is matched, and the communication joint debugging can be carried out with a background system;
6. the shunt circuit with the control switch of the product avoids the trouble of additionally installing a shunt release.
Drawings
Fig. 1 is an overall circuit diagram of the circuit breaker of the present invention;
fig. 2 is a signal processing circuit diagram of the overall circuit diagram of the circuit breaker of the present invention;
fig. 3 is a power supply processing circuit in the overall circuit diagram of the circuit breaker of the present invention;
FIG. 4 is an enlarged view of a portion A1 of FIG. 2, showing a current sampling input circuit;
fig. 5 is a partial enlarged view of a portion a2 in fig. 2, which is a circuit diagram of a key signal input circuit on the circuit breaker;
FIG. 6 is a partial enlarged view of portion B of FIG. 2, showing a power filter circuit;
FIG. 7 is an enlarged view of a portion C of FIG. 2, showing a key input circuit diagram of the circuit breaker;
FIG. 8 is an enlarged view of a portion D of FIG. 2 showing a circuit diagram of a liquid crystal display;
FIG. 9 is an enlarged view of a portion E of FIG. 2, showing a communication input circuit;
FIG. 10 is an enlarged view of a portion F of FIG. 2, showing a communication circuit;
FIG. 11 is an enlarged view of a portion G of FIG. 2, showing a data storage circuit;
FIG. 12 is an enlarged view of a portion a1 in FIG. 3, showing a current sampling circuit;
fig. 13 is a partial enlarged view of a portion a2 in fig. 3, which is a circuit diagram of current signal processing;
FIG. 14 is a partial enlarged view of portion b of FIG. 3 showing a power processing circuit;
fig. 15 is a partially enlarged view of the portion c in fig. 3, showing a circuit diagram of the connector on the circuit breaker.
Detailed Description
As shown in fig. 1-15, the circuit of the electronic circuit breaker with continuously adjustable setting parameters and visual data of the utility model is a three-phase circuit breaker, the circuit of the three-phase circuit breaker is provided with a signal processing circuit and a power supply processing circuit,
the signal processing circuit comprises an A-phase circuit, a B-phase circuit, a C-phase circuit, a main chip U1 and a liquid crystal display driving circuit, wherein the main chip U1 can use PIC24FJ128GA 306;
each phase circuit is provided with a current sampling circuit and a voltage sampling circuit,
the current sampling circuit comprises a rectifier bridge D1 and a resistor R1, current signals are obtained from the secondary side of a current transformer, voltage sampling comprises capacitors R2 and R18, a capacitor C1 and an operational amplifier, after the current signals are obtained from the secondary side of the current transformer of each phase circuit, the current signals are converted into voltage signals through the rectifier bridge D1 and the resistor R1, current limiting is carried out through the capacitors R2 and R18, filtering is carried out through a capacitor C1, and access detection signals of an ADC (analog to digital converter) interface of a main chip U1 are obtained through inverting input signals at the U1 end of the operational amplifier after amplification;
after the detection signal is subjected to operation processing of the main chip U1, the detection signal drives a liquid crystal display driving circuit to perform liquid crystal display and control output;
the power supply processing circuit comprises a rectifying circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit,
the rectifying circuit comprises rectifying bridges D1, D2 and D3,
the first voltage stabilizing circuit comprises a triode Q2, a Q3, a voltage stabilizing tube ZD1, a voltage stabilizing tube ZD2,
the second voltage stabilizing circuit comprises diodes D8 and D9 and voltage stabilizing blocks U3 and U2, stabilizes the power supply voltage of the DC12V,
three-phase current signals are rectified by rectifier bridges D1, D2 and D3 to obtain direct current signals, voltage stabilization is carried out by triodes Q2 and Q3 and voltage-stabilizing tubes ZD1 and ZD2 to obtain DC12V power supply voltage, and power supply VDD required by a main chip U1 is obtained by diodes D8 and D9 and voltage-stabilizing blocks U3 and U2.
Claims (4)
1. The utility model provides a circuit of electronic type circuit breaker that setting parameter is continuously adjustable and data is visual which characterized in that: the circuit breaker is a three-phase circuit breaker, the circuit of the three-phase circuit breaker is provided with a signal processing circuit and a power supply processing circuit,
the signal processing circuit comprises an A-phase circuit, a B-phase circuit, a C-phase circuit, a main chip U1 and a liquid crystal display driving circuit,
each phase circuit is provided with a current sampling circuit and a voltage sampling circuit,
a current sampling circuit for converting the current signal into a voltage signal,
the voltage sampling circuit is used for obtaining a voltage signal and processing the voltage signal to obtain an access detection signal of an ADC interface of the main chip U1,
after the detection signal is subjected to operation processing of the main chip U1, the detection signal drives a liquid crystal display driving circuit to perform liquid crystal display and control output;
the power supply processing circuit comprises a rectifying circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit,
a rectifying circuit for rectifying the three-phase current signals to obtain DC signals,
the first voltage regulator circuit is used for stabilizing the DC signal to obtain the power voltage of DC12V,
and the second voltage stabilizing circuit is used for stabilizing the power supply voltage of the DC12V to obtain the power supply VDD required by the main chip U1.
2. The circuit for an electronic circuit breaker with continuously adjustable tuning parameters and data visualization of claim 1, wherein: the current sampling circuit comprises a rectifier bridge D1 and a resistor R1, current signals are obtained from the secondary side of a current transformer, voltage sampling comprises capacitors R2 and R18, a capacitor C1 and an operational amplifier, after the current signals are obtained from the secondary side of the current transformer of each phase circuit, the current signals are converted into voltage signals through the rectifier bridge D1 and the resistor R1, current limiting is carried out through the capacitors R2 and R18, filtering is carried out through the capacitor C1, and access detection signals of an ADC interface of a main chip U1 are obtained through inverting input signals at the U1 end of the operational amplifier and amplifying.
3. The circuit for an electronic circuit breaker with continuously adjustable tuning parameters and data visualization of claim 1, wherein: the rectifying circuit comprises rectifying bridges D1, D2 and D3, the first voltage stabilizing circuit comprises triodes Q2 and Q3 and voltage-stabilizing tubes ZD1 and ZD2, the second voltage stabilizing circuit comprises diodes D8 and D9 and voltage-stabilizing blocks U3 and U2, three-phase current signals are respectively rectified by the rectifying bridges D1, D2 and D3 to obtain direct current signals, voltage-stabilizing is carried out by the triodes Q2 and Q3 and the voltage-stabilizing tubes ZD1 and ZD2 to obtain DC12V power supply voltage, and then power supply VDD required by the main chip U1 is obtained by the diodes D8 and D9 and the voltage-stabilizing blocks U3 and U2.
4. The circuit for an electronic circuit breaker with continuously adjustable tuning parameters and data visualization of claim 1, wherein: the master chip U1 may use the PIC24FJ128GA 306.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454803.9U CN217009078U (en) | 2021-12-31 | 2021-12-31 | Circuit of electronic circuit breaker with continuously adjustable setting parameters and visual data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454803.9U CN217009078U (en) | 2021-12-31 | 2021-12-31 | Circuit of electronic circuit breaker with continuously adjustable setting parameters and visual data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217009078U true CN217009078U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123454803.9U Active CN217009078U (en) | 2021-12-31 | 2021-12-31 | Circuit of electronic circuit breaker with continuously adjustable setting parameters and visual data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217009078U (en) |
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2021
- 2021-12-31 CN CN202123454803.9U patent/CN217009078U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Hebrew Electric Technology Co.,Ltd. Assignor: Hengsmai Electric Power Technology Zhejiang Co.,Ltd. Contract record no.: X2023980040933 Denomination of utility model: A Circuit of Electronic Circuit Breaker with Continuous Adjustable Setting Parameters and Visible Data Granted publication date: 20220719 License type: Common License Record date: 20230901 |