CN202167826U - Electric leakage and excess temperature protection control circuit for intelligent electronic closet controller - Google Patents
Electric leakage and excess temperature protection control circuit for intelligent electronic closet controller Download PDFInfo
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- CN202167826U CN202167826U CN2011202871140U CN201120287114U CN202167826U CN 202167826 U CN202167826 U CN 202167826U CN 2011202871140 U CN2011202871140 U CN 2011202871140U CN 201120287114 U CN201120287114 U CN 201120287114U CN 202167826 U CN202167826 U CN 202167826U
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Abstract
The utility model discloses an electric leakage and excess temperature protection control circuit for an intelligent electronic closet controller. The electric leakage and excess temperature protection control circuit comprises a one-chip microcomputer, an excess temperature protection device, an electric leakage detection device, an electric leakage module power supply, an electric leakage signal processing device and a power-off protection device, wherein the one-chip microcomputer is connected with the excess temperature protection device, the electric leakage detection device is connected with the electric leakage signal processing device, the electric leakage signal processing device is connected with the electric leakage module power supply and the power-off protection device, the electric leakage module power supply and the power-off protection device are respectively connected with an AC power supply, the electric leakage detection device is provided with a zero sequence current transformer (T1), and the AC power supply penetrates through the zero sequence current transformer (T1). The circuit can cut off both the heavy current and the weak current of a system under the condition of electric leakage, protects the safety of person and the controller to a maximum extent, uses an excess temperature protection control circuit and an electric leakage protection circuit module together, makes the control of the circuit more flexible, gives full play to the effect of the circuit, and saves cost.
Description
Technical field
The utility model relates to the field of smart electronics toilet controller, relates in particular to a kind of electric leakage and overheat protector control circuit of smart electronics toilet controller.
Background technology
At present, the control circuit of smart electronics toilet controller on the market generally all is integrated in creepage protection function on the power-line plug, makes that the cost increase and the versatility of product are poor; They are two years old; Smart electronics toilet controller on the market control circuit generally adopt controllable silicon as the load switch pipe; Because controllable silicon is operated on off state; Bear the impact of civil power for a long time, thus therefore controlled possibly occur puncturing cause that power termination is out of control works always, make machine breakdown even cause hardly imaginable consequence such as fire.
Because smart electronics toilet operational environment is moist, the electronics seat ring of toilet directly contacts with human body, so when design, must increase creepage protection function, prevents that the accident that the person gets an electric shock and electric leakage causes from taking place.
The utility model content
To the problems referred to above that exist in the prior art, the utility model provides a kind of electric leakage and overheat protector control circuit of smart electronics toilet controller.
The utility model provides a kind of electric leakage and overheat protector control circuit of smart electronics toilet controller, comprises single-chip microcomputer, overheat protector device, detection of electrical leakage device, electric leakage modular power source, electric leakage signal processing apparatus and power-off protection device;
Single-chip microcomputer is connected with the overheat protector device, and the detection of electrical leakage device is connected with the electric leakage signal processing apparatus, and the electric leakage signal processing apparatus also is connected with the power-off protection device with the electric leakage modular power source;
Electric leakage modular power source and power-off protection device are connected with AC power respectively;
The detection of electrical leakage device has zero sequence current mutual inductor T1, and AC power is passed from zero sequence current mutual inductor T1.
In one example, pass zero-power line lead J1, power firestreak lead J2 and the overheat protector lead J3 sensing hole in the middle of zero sequence current mutual inductor T1; Power firestreak lead J2 is connected with power firestreak with overheat protector lead J3, and zero-power line lead J1 is connected with zero-power line.
In one example, the electric leakage modular power source comprises diode D1, resistance R 1, resistance R 4, electrochemical capacitor E1 and ceramic disc capacitor C5;
The anode of diode D1 is connected with power firestreak, and the negative electrode of diode D1 connects an end of resistance R 1 and an end of resistance R 4 respectively, and the other end of resistance R 1 is connected with zero-power line through electrochemical capacitor E1; The other end of resistance R 4 is connected with the power-off protection device through ceramic disc capacitor C5.
In one example, the power-off protection device comprises relay R EY1, unidirectional controllable silicon S 1 and diode D2;
The other end of resistance R 4 is respectively at being connected with the negative electrode of diode D2, an end of relay R EY1 coil and the end of ceramic disc capacitor C5; The other end of the other end of relay R EY1 coil, diode D2 anode and ceramic disc capacitor C5 is connected to the anode of unidirectional controllable silicon S 1; The control utmost point of unidirectional controllable silicon S 1 is connected with the electric leakage signal processing apparatus, and the negative electrode of unidirectional controllable silicon S 1 is connected with zero-power line;
Zero-power line lead J1 is connected with one tunnel input of relay, and power firestreak lead J2 is connected with another road input of relay, and two normally closed outputs of relay are connected respectively to the power input of control board circuit.
In one example, the overheat protector device comprises optocoupler PC1, resistance R 7, resistance R 5; Single-chip microcomputer is connected through the photophore of resistance R 7 with optocoupler PC1, and overheat protector lead J3 is connected with zero-power line through the light-receiving device of resistance R 5 and optocoupler PC1.
In one example, the electric leakage signal processing apparatus comprises electric leakage signal process chip IC1, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, resistance R 2 and resistance R 3;
The output of zero sequence current mutual inductor T1 is connected to an end of resistance R 2 and an end of resistance R 3, and the other end of resistance R 3 is connected to electric leakage signal process chip IC1; The other end of resistance R 2 is connected with another output of zero sequence current mutual inductor T1, and the other end of resistance R 3 is connected with electric leakage signal process chip IC1; Another output of zero sequence current mutual inductor T1 is connected to electric leakage signal process chip IC1; The other end of resistance R 2 is connected with zero-power line through capacitor C 1;
The negative electrode of unidirectional controllable silicon S 1 is connected to electric leakage signal process chip IC1 through capacitor C 2; The control utmost point of unidirectional controllable silicon S 1 is connected to electric leakage signal process chip IC1 through capacitor C 3; The control utmost point of unidirectional controllable silicon S 1 also directly is connected with electric leakage signal process chip IC1, and capacitor C 4 is connected between the negative electrode and the control utmost point of unidirectional controllable silicon S 1.
The utility model circuit can all break off the strong, weak electricity of system under the electric leakage situation; Protect the safety of the person and controller to greatest extent; And it is overheat protector control circuit and leakage protection circuit module is shared; Make circuit control more flexible, bring into play the effect of circuit to greatest extent, save cost.
Description of drawings
Come the utility model is done further explain below in conjunction with accompanying drawing, wherein:
Fig. 1 is the electric leakage and the overheat protector control circuit embodiment operation principle sketch map of the smart electronics toilet controller of the utility model;
Fig. 2 is the electric leakage and the overheat protector control circuit embodiment circuit theory diagrams of the smart electronics toilet controller of the utility model.
Embodiment
The technical scheme of the utility model is to adopt single-chip microcomputer (MCU) to add control device to realize, can both be during electric leakage, load switch device excess temperature out of control with dump, and keep off-position always, only if connect power supply again.
Fig. 1 is the electric leakage and the overheat protector control circuit embodiment operation principle sketch map of the smart electronics toilet controller of the utility model, comprising: detection of electrical leakage device, electric leakage signal processing apparatus, electric leakage modular power source, power-off protection device and overheat protector device.The current signal that the detection of electrical leakage device is sensed during with system electric leakage or overheat protector is transferred to the electric leakage signal processing apparatus; The electric leakage signal processing apparatus is controlled the power-off protection device again, the system control panel power supply is broken off, when CPU detects system's excess temperature; Output signal to the overheat protector device; Making in the detection of electrical leakage device has induced current, and power-off protecting circuit is broken off, and cuts off the control board power supply.
Fig. 2 is the electric leakage and the overheat protector control circuit embodiment circuit theory diagrams of the smart electronics toilet controller of the utility model, comprising: detection of electrical leakage device, electric leakage signal processing apparatus, electric leakage modular power source, power-off protection device and overheat protector device.
The detection of electrical leakage device comprises: zero sequence current mutual inductor T1, lead J2, J3.The electric leakage modular power source comprises: diode D1, resistance R 1, R4, electric capacity E1, ceramic disc capacitor C5.The electric leakage signal processing apparatus comprises: electric leakage signal process chip IC1, capacitor C 1, C2, C3, C4, resistance R 2, R3.The power-off protection device comprises: relay R EY1, unidirectional controllable silicon S 1, diode D2.The overheat protector device comprises: optocoupler PC1, resistance R 7, R5, lead J3.
Pass zero-power line lead J1, power firestreak lead J2, the sensing hole of overheat protector lead J3 in the middle of zero sequence current mutual inductor T1.Zero sequence current mutual inductor T1 one output is connected to resistance R 2 and resistance R 3, and resistance R 3 is connected in series to an end of chip IC 1; Another output of zero sequence current mutual inductor T1 is connected to an end of capacitor C 1, resistance R 2 and chip IC 1; Diode D1 negative electrode is connected to the end that resistance R 1, R4, resistance R 1 are connected to electric capacity E1 and chip IC 1 again, resistance R 4 one ends again with an end of relay R EY1 coil, diode D2 negative electrode, capacitor C 5 links to each other.The other end of relay R EY1 coil; Diode D2 anode; Capacitor C 5 and connect after be connected to the anode of controllable silicon S1; The control utmost point of controllable silicon S1 links to each other with an end of capacitor C 3, C4, chip IC 1, silicon controlled negative electrode and capacitor C 4, C2, C1, electrochemical capacitor E1, optocoupler PC1, zero-power line lead J1 one end be connected to power supply 220V the zero line input (～220V-N).Power supply 220V live wire input links to each other with anode, power firestreak lead J2 and the end of overheat protector lead J3 of diode D1; Zero-power line lead J1 one end links to each other with relay one tunnel input; Power firestreak lead J2 links to each other with another input of relay; Two normally closed output terminals A C-N, AC-L of relay are connected respectively to the power input of control board circuit, and overheat protector lead J3 one end links to each other with resistance R 5, and resistance R 5 links to each other with optocoupler PC1 again; One termination power VDD of the input of optocoupler arrives cpu port behind the input other end series resistance R7.
When electric leakage, zero sequence current mutual inductor is with system's electric leakage signal induction and be transferred to the electric leakage signal process chip, after leakage current arrives set point; The conducting of a signal control thyristor of output; Relay is broken off, thereby make system cut-off, guarantee the safety of the person and system.
When excess temperature; After MCU detects the judgement excess temperature; Export a control signal and give optocoupler PC1, after the optocoupler PC1 conducting, have an electric current through passing the electric leakage induction coil through overheat protector lead J3; Zero sequence current mutual inductor T1 senses current signal, and operation principle is identical with the electric leakage operation principle thereafter.
During operate as normal, zero-power line lead J1 and power firestreak lead J2 current balance type, the non-inductive signal of zero sequence current mutual inductor T1, controllable silicon S1 does not work, and relay R EY1 is in normally off, and circuit supply is normal.1: when electric leakage occurring, between power firestreak and the zero line, balance is broken; Cause difference between current, zero sequence current mutual inductor T1 is transferred to electric leakage signal through resistance R 3 with induced signal with the form of voltage, and R2 is transferred to process chip IC1; After leakage current arrived set point, chip IC 1 output signal control thyristor S1 made its conducting, thus the relay adhesive; Normally closed group of disconnection, thus the control board power supply breaks off the safety that has guaranteed human body and control board.2: when the load temperature that some reason causes too high, when especially when the switching device of control load lost efficacy, making load control, after temperature is too high; CPU is according to the temperature value that detects; The output signal is through resistance R 7 to optocoupler PC1, after the optocoupler PC1 conducting, after electric current passes through J3, resistance R 5; In zero sequence current mutual inductor T1, produce electric current, operation principle is said by 1 thereafter.
The above is merely the preferred implementation of the utility model, but the utility model protection range is not limited thereto.Any those skilled in the art all can carry out suitable change or variation to it in the disclosed technical scope of the utility model, and this change or variation all should be encompassed within the protection range of the utility model.
Claims (6)
1. the electric leakage of a smart electronics toilet controller and overheat protector control circuit is characterized in that, comprise single-chip microcomputer, overheat protector device, detection of electrical leakage device, electric leakage modular power source, electric leakage signal processing apparatus and power-off protection device;
Single-chip microcomputer is connected with the overheat protector device, and the detection of electrical leakage device is connected with the electric leakage signal processing apparatus, and the electric leakage signal processing apparatus also is connected with the power-off protection device with the electric leakage modular power source;
Electric leakage modular power source and power-off protection device are connected with AC power respectively;
The detection of electrical leakage device has zero sequence current mutual inductor (T1), and AC power is passed from zero sequence current mutual inductor (T1).
2. electric leakage as claimed in claim 1 and overheat protector control circuit is characterized in that, pass zero-power line lead (J1), power firestreak lead (J2) and overheat protector lead (J3) sensing hole in the middle of zero sequence current mutual inductor (T1); Power firestreak lead (J2) is connected with power firestreak with overheat protector lead (J3), and zero-power line lead (J1) is connected with zero-power line.
3. electric leakage as claimed in claim 2 and overheat protector control circuit is characterized in that, the electric leakage modular power source comprises diode (D1), resistance (R1), resistance (R4), electrochemical capacitor (E1) and ceramic disc capacitor (C5);
The anode of diode (D1) is connected with power firestreak, and the negative electrode of diode (D1) connects an end of resistance (R1) and an end of resistance (R4) respectively, and the other end of resistance (R1) is connected with zero-power line through electrochemical capacitor (E1); The other end of resistance (R4) is connected with the power-off protection device through ceramic disc capacitor (C5).
4. electric leakage as claimed in claim 3 and overheat protector control circuit is characterized in that, the power-off protection device comprises relay (REY1), one-way SCR (S1) and diode (D2);
The other end of resistance (R4) is respectively at being connected with the negative electrode of diode (D2), an end of relay (REY1) coil and an end of ceramic disc capacitor (C5); The other end of the other end of relay (REY1) coil, diode (D2) anode and ceramic disc capacitor (C5) is connected to the anode of one-way SCR (S1); The control utmost point of one-way SCR (S1) is connected with the electric leakage signal processing apparatus, and the negative electrode of one-way SCR (S1) is connected with zero-power line;
Zero-power line lead (J1) is connected with one tunnel input of relay, and power firestreak lead (J2) is connected with another road input of relay, and two normally closed outputs of relay are connected respectively to the power input of control board circuit.
5. electric leakage as claimed in claim 4 and overheat protector control circuit is characterized in that, the overheat protector device comprises optocoupler (PC1), resistance (R7), resistance (R5); Single-chip microcomputer is connected through the photophore of resistance (R7) with optocoupler (PC1), and overheat protector lead (J3) is connected with zero-power line through the light-receiving device of resistance (R5) with optocoupler (PC1).
6. electric leakage as claimed in claim 5 and overheat protector control circuit is characterized in that, the electric leakage signal processing apparatus comprises electric leakage signal process chip (IC1), electric capacity (C1), electric capacity (C2), electric capacity (C3), electric capacity (C4), resistance (R2) and resistance (R3);
One output of zero sequence current mutual inductor (T1) is connected to an end of resistance (R2) and an end of resistance (R3), and the other end of resistance (R3) is connected to electric leakage signal process chip (IC1); The other end of resistance (R2) is connected with another output of zero sequence current mutual inductor (T1), and the other end of resistance (R3) is connected with electric leakage signal process chip (IC1); Another output of zero sequence current mutual inductor (T1) is connected to electric leakage signal process chip (IC1); The other end of resistance (R2) is connected with zero-power line through electric capacity (C1);
The negative electrode of one-way SCR (S1) is connected to electric leakage signal process chip (IC1) through electric capacity (C2); The control utmost point of one-way SCR (S1) is connected to electric leakage signal process chip (IC1) through electric capacity (C3); The control utmost point of one-way SCR (S1) also directly is connected with electric leakage signal process chip (IC1), and electric capacity (C4) is connected between the negative electrode and the control utmost point of one-way SCR (S1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202871140U CN202167826U (en) | 2011-08-09 | 2011-08-09 | Electric leakage and excess temperature protection control circuit for intelligent electronic closet controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202871140U CN202167826U (en) | 2011-08-09 | 2011-08-09 | Electric leakage and excess temperature protection control circuit for intelligent electronic closet controller |
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| Publication Number | Publication Date |
|---|---|
| CN202167826U true CN202167826U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202871140U Expired - Fee Related CN202167826U (en) | 2011-08-09 | 2011-08-09 | Electric leakage and excess temperature protection control circuit for intelligent electronic closet controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300259A (en) * | 2017-05-27 | 2017-10-27 | 深圳市鹰之航航空科技有限公司 | The method of water boiling device and control of heating up water with many defencive functions |
-
2011
- 2011-08-09 CN CN2011202871140U patent/CN202167826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300259A (en) * | 2017-05-27 | 2017-10-27 | 深圳市鹰之航航空科技有限公司 | The method of water boiling device and control of heating up water with many defencive functions |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140809 |
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| EXPY | Termination of patent right or utility model |