CN201352246Y - Binary detection device for electrification signals of electric water heater - Google Patents
Binary detection device for electrification signals of electric water heater Download PDFInfo
- Publication number
- CN201352246Y CN201352246Y CNU2009201134811U CN200920113481U CN201352246Y CN 201352246 Y CN201352246 Y CN 201352246Y CN U2009201134811 U CNU2009201134811 U CN U2009201134811U CN 200920113481 U CN200920113481 U CN 200920113481U CN 201352246 Y CN201352246 Y CN 201352246Y
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- China
- Prior art keywords
- zero line
- ground wire
- circuit
- live wire
- input end
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- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A binary detection device for electrification signals of an electric water heater is provided with a device for detecting the electric potential difference between a ground wire and a zero line, a device for detecting the current difference between a live wire and the zero line, and a self-checking circuit. The former consists of a transformer, a rectification circuit, a triode and a photocoupler which are connected in sequence; and a primary coil of the transformer is connected with the ground wire and the zero line of a power supply; and the output end of the photocoupler is connected with the input end of a singlechip. The latter consists of a magnet ring coil and a double opamp integrated circuit; the live wire and the zero line pass through the magnet ring coil; and the output end of the double opamp integrated circuit is connected wtih the input end of the singlechip. The self-checking circuit consists of keystrokes and a resistor, and is connected with the singlechip. The beneficial effects are that when an electric heating tube is basically insulated and simultaneously the ground wire fails and the electric heating tube leaks electricity, the electrification signals are supplied to a control circuit so that the control circuit can conduct real-time control on the live wire, the ground wire and the zero line; and the photocoupler is adopted, and light is taken as a medium to transmit the electrification signals, therefore, good isolation effect is provided to the input electrification signals and the output electrification signals.
Description
Technical field
The utility model relates to a kind of pick-up unit, the two pick-up units of the charged signal of particularly a kind of electric heater.
Background technology
The prior art electric heater does not have the two pick-up units of charged signal; can not be provided at when electric heating tube basic insulation and ground wire lose efficacy simultaneously and electric heating tube leaks electricity live wire, ground wire and zero line were controlled in real time, and make the personal safety of user under the imperfect earth environment can not get protection.
Summary of the invention
The purpose of this utility model provides the two pick-up units of the charged signal of a kind of electric heater.
The technical scheme that its technical matters that solves the utility model adopts is: comprise potential difference detecting device, live wire and neutral line current device for detecting difference and the self-checking circuit of cross-over connection between ground wire and zero line.Potential difference detecting device between ground wire and zero line is connected to form successively by transformer, rectification circuit, triode, photoelectrical coupler, the primary coil of transformer is connected with zero line with the ground wire of power supply, and the output terminal of photoelectrical coupler is connected with the I/O input end of single-chip microcomputer; Live wire and neutral line current device for detecting difference are made up of magnetic ring coil and double operational integrated circuit, and live wire and zero line pass magnetic ring coil, and the output terminal of double operational integrated circuit is connected with the I/O input end of single-chip microcomputer; Self-checking circuit is made up of button and resistance, and an end of button is connected with the I/O input end of single-chip microcomputer, and is connected other end ground connection with positive source by resistance.
Provide charged signal to control circuit when the beneficial effects of the utility model are at the electric heating tube basic insulation and ground wire lost efficacy simultaneously and electric heating tube leaks electricity, so that control circuit is controlled in real time to live wire, ground wire and zero line, adopt photoelectrical coupler, with light is the media transmission electric signal, and input, output electric signal are had the good isolation effect.Self-checking circuit has analog electrical signal and detects and the system reset function.
Description of drawings
The utility model is described in further detail below by accompanying drawing.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model.
Embodiment
Consult Fig. 1.The utility model single-chip microcomputer model is: PIC16C54.
The utility model is made up of potential difference detecting device, live wire and neutral line current device for detecting difference and the self-checking circuit of cross-over connection between ground wire and zero line, potential difference detecting device between ground wire and zero line is connected to form successively by transformer T, rectification circuit D1-D4, triode G, photoelectrical coupler GN, the primary coil of transformer T is connected with zero line N with the ground wire E of power supply, and the output terminal of photoelectrical coupler GN is connected with the I/O input end of single-chip microcomputer; Live wire L and zero line N current difference detection means are made up of magnetic ring coil L and double operational integrated circuit LM358, and live wire L and zero line N pass magnetic ring coil L, and the output terminal of double operational integrated circuit LM358 is connected with the I/O input end of single-chip microcomputer; Self-checking circuit is made up of button K and resistance R, and an end of button is connected with the I/O input end of single-chip microcomputer, and is connected other end ground connection with positive source by resistance.Self-checking circuit has analog electrical signal and detects and the system reset function.The single-chip processor i/o output terminal electric heating tube basic insulation and ground wire lost efficacy simultaneously and during the electric heating tube electric leakage backward a level control circuit charged signal is provided.
Claims (1)
1, the two pick-up units of the charged signal of a kind of electric heater, comprise potential difference detecting device, live wire and neutral line current device for detecting difference and the self-checking circuit of cross-over connection between ground wire and zero line, it is characterized in that the potential difference detecting device between ground wire and zero line is connected to form successively by transformer, rectification circuit, triode, photoelectrical coupler, the primary coil of transformer is connected with zero line with the ground wire of power supply, and the output terminal of photoelectrical coupler is connected with the I/O input end of single-chip microcomputer; Live wire and neutral line current device for detecting difference are made up of magnetic ring coil and double operational integrated circuit, and live wire and zero line pass magnetic ring coil, and the output terminal of double operational integrated circuit is connected with the I/O input end of single-chip microcomputer; Self-checking circuit is made up of button and resistance, and an end of button is connected with the I/O input end of single-chip microcomputer, and is connected other end ground connection with positive source by resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201134811U CN201352246Y (en) | 2009-02-01 | 2009-02-01 | Binary detection device for electrification signals of electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201134811U CN201352246Y (en) | 2009-02-01 | 2009-02-01 | Binary detection device for electrification signals of electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352246Y true CN201352246Y (en) | 2009-11-25 |
Family
ID=41375634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201134811U Expired - Fee Related CN201352246Y (en) | 2009-02-01 | 2009-02-01 | Binary detection device for electrification signals of electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352246Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253306A (en) * | 2010-04-13 | 2011-11-23 | 福特全球技术公司 | Power distribution circuit diagnostic system |
| CN102865663A (en) * | 2012-08-03 | 2013-01-09 | 苏州新亚科技有限公司 | Galvanized steel sheet water heater antirust water tank and corrosion prevention method thereof |
| CN106322767A (en) * | 2015-06-23 | 2017-01-11 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater and control method |
-
2009
- 2009-02-01 CN CNU2009201134811U patent/CN201352246Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253306A (en) * | 2010-04-13 | 2011-11-23 | 福特全球技术公司 | Power distribution circuit diagnostic system |
| US8855951B2 (en) | 2010-04-13 | 2014-10-07 | Ford Global Technologies, Llc | Power distribution circuit diagnostic system and method |
| CN102253306B (en) * | 2010-04-13 | 2015-12-09 | 福特全球技术公司 | Power distribution circuit diagnostic system |
| CN102865663A (en) * | 2012-08-03 | 2013-01-09 | 苏州新亚科技有限公司 | Galvanized steel sheet water heater antirust water tank and corrosion prevention method thereof |
| CN102865663B (en) * | 2012-08-03 | 2015-04-15 | 苏州新亚科技有限公司 | Galvanized steel sheet water heater antirust water tank and corrosion prevention method thereof |
| CN106322767A (en) * | 2015-06-23 | 2017-01-11 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater and control method |
| CN106322767B (en) * | 2015-06-23 | 2019-11-05 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20100201 |