CN201174574Y - General-purpose electric appliance diad anti-electricity plug with selection function - Google Patents
General-purpose electric appliance diad anti-electricity plug with selection function Download PDFInfo
- Publication number
- CN201174574Y CN201174574Y CNU2008200085442U CN200820008544U CN201174574Y CN 201174574 Y CN201174574 Y CN 201174574Y CN U2008200085442 U CNU2008200085442 U CN U2008200085442U CN 200820008544 U CN200820008544 U CN 200820008544U CN 201174574 Y CN201174574 Y CN 201174574Y
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- China
- Prior art keywords
- live wire
- plug
- ground wire
- circuit
- zero
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The utility model discloses a two in one electricity prevention plug with option function for a general electric appliance. The plug is characterized in that the input end of a singlechip is connected with a zero line and earth line potential difference detection device, a live wire and zero line electric current difference detection device, two simulation test touch buttons, and two touch switches which have the connection and disconnection function. The input end of a triode switching circuit is connected with the output end of the singlechip. A relay connected with the triode switching circuit controls the on-off of the live wire, the earth line and the plug contact pins which are connected with contacts of the relay. The zero line and earth line potential difference detection device spans between the earth line and the zero line. A rear level circuit consists of a switching tube, a Darlington tube, an operational amplifier and a monostable circuit respectively. One of the four combinations is selected through the on-off of the touch switch. The simulation test touch button is used for testing the working state. The plug has the advantages that an electric water heater and other electric appliances cut off the live wire and the earth line when the live wire leaks electricity or are substantially insulated and the earth line is invalid simultaneously or the earth line is electrified, and the plug is suitable for various electric water heaters and other various electric appliances.
Description
Technical field
The utility model relates to a kind of two-in-one anti-plug, particularly a kind of general-purpose electric appliance two-in-one against electric plug with selection function.
Background technology
The utility model is before the applying date; the anti-plug that prior art is applied in electric heater and other electrical equipment is actually a kind of earth leakage protective device; only electric leakage has defencive function to live wire; but to electric heating tube and other electrical equipment basic insulations with ground wire lost efficacy simultaneously or really weary protection during ground wire electrification; do not meet especially with at the end of Year 2008 the issue international electric heater safety standard; to the electric heating tube basic insulation and ground wire lost efficacy simultaneously or during ground wire electrification really the electric heater of weary protection user's Electrical Safety environment is brought hidden danger, use the countries and regions that are not suitable for electrical equipment imperfect earth especially and have a similar electrical equipment imperfect earth area.
Summary of the invention
The purpose of this utility model provides a kind of general-purpose electric appliance two-in-one against electric plug with selection function.
To be the single-chip processor i/o input touch key and two with zero grounding potential difference detector set, live wire and neutral line current device for detecting difference, two simulation tests to the technical scheme that its technical problem that solves the utility model adopts has to be connected with the touch-switch of break function and be connected, the single-chip processor i/o output is connected with the input of transistor switching circuit, the output of transistor switching circuit is connected with relay, and relay control is connected on the break-make of live wire, ground wire and the plug contact pin of its contact.Zero grounding potential difference detector set is connected across between ground wire and zero line, connect to form step by step by the transformer, rectifying tube, voltage-stabiliser tube, electric capacity of voltage regulation and the late-class circuit that are connected across between ground wire and zero line, late-class circuit is made up of switching tube, Darlington transistor, operational amplifier and monostable circuit respectively, and late-class circuit is connected with the single-chip processor i/o input respectively.Two have connection and are connected with the single-chip processor i/o input respectively with touch-switch one end of break function, and be connected with positive source by resistance, its common end grounding, the connection of two touch-switchs with disconnect to form four kinds of various combinations, be respectively applied for and select in the zero grounding potential difference detector set late-class circuit a kind of in switching tube, Darlington transistor, operational amplifier and the monostable circuit.Simulation test touches key and comprises zero line-ground wire potential difference analog signal and live wire and neutral line current differential mode analog signal, provide by scm software, in order to test electric heating tube and other electrical equipment basic insulations and ground wire lost efficacy simultaneously or the situation of ground wire electrification under or electrical work state under live wire electric leakage situation, and show by the luminous tube of different colours.Live wire and neutral line current device for detecting difference are connected to form by double operational integrated circuit and magnetic ring coil, and live wire and zero line pass magnetic ring coil, and the double operational integrated circuit is connected with the single-chip processor i/o input.
The beneficial effects of the utility model are to make various electric heaters and other various electrical equipment at live wire electric leakage or basic insulation with ground wire lost efficacy simultaneously or cut off live wire and ground wire during ground wire electrification, meeting will be in the international electric heater safety standard of issuing at the end of Year 2008, Electrical Safety environment to the user when electric heating tube basic insulation and ground wire inefficacy simultaneously or ground wire electrification and live wire electric leakage brings guarantee, is specially adapted to electrical equipment imperfect earth and uses with the countries and regions with similar electrical equipment imperfect earth area.Selection function of the present utility model can make one's options to the actual requirement of different electrical equipment, makes the utility model be applicable to various electric heaters and other various electrical equipment.Simulation test touches key in order to test the operating state of various electric heaters and other various electrical equipment, promptly electric heating tube and other electrical equipment basic insulations and ground wire lost efficacy simultaneously or the situation of ground wire electrification under or can operate as normal under live wire electric leakage situation.
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.Single-chip microcomputer is the 8-bit microcontroller of U.S. Microchip company among the figure.Embodiment is PIC16C57.
As shown in the figure, single-chip processor i/o input and zero grounding potential difference detector set, live wire and neutral line current device for detecting difference, two simulation tests touch key and two to have to be connected with the touch-switch of break function and is connected, the single-chip processor i/o output is connected with the input of transistor switching circuit, the output of transistor switching circuit is connected with relay, and relay control is connected on the break-make of live wire, ground wire and the plug contact pin of its contact.Zero grounding potential difference detector set is connected across between ground wire and zero line, connect to form step by step by the transformer, rectifying tube, voltage-stabiliser tube, electric capacity of voltage regulation and the late-class circuit that are connected across between ground wire and zero line, late-class circuit is made up of switching tube, Darlington transistor, operational amplifier and monostable circuit respectively, and late-class circuit is connected with the single-chip processor i/o input respectively.Two have connection and are connected with the single-chip processor i/o input respectively with touch-switch one end of break function, and be connected with positive source by resistance, its common end grounding, the connection of two touch-switchs is formed four kinds of various combinations with disconnection, the present embodiment definition is connected to 1, being broken as 0, four kind of various combination is 00,01,10,11, is respectively applied for to select in the zero grounding potential difference detector set late-class circuit a kind of in switching tube, Darlington transistor, operational amplifier and the monostable circuit.Simulation test touches key and comprises zero line-ground wire potential difference analog signal and live wire and neutral line current differential mode analog signal, provide by scm software, in order to test electric heating tube and other electrical equipment basic insulations and ground wire lost efficacy simultaneously or the situation of ground wire electrification under or electrical work state under live wire electric leakage situation, and show by the luminous tube of different colours.Live wire and neutral line current device for detecting difference are connected to form by double operational integrated circuit and magnetic ring coil, and live wire and zero line pass magnetic ring coil, and the double operational integrated circuit is connected with the single-chip processor i/o input.
Claims (5)
1, a kind of general-purpose electric appliance two-in-one against electric plug with selection function, it is characterized in that single-chip processor i/o input and zero grounding potential difference detector set, live wire and neutral line current device for detecting difference, two simulation tests touch key and two and have to be connected with the touch-switch of break function and be connected, the single-chip processor i/o output is connected with the input of transistor switching circuit, the output of transistor switching circuit is connected with relay, and relay control is connected on the break-make of live wire, ground wire and the plug contact pin of its contact.
2, the general-purpose electric appliance two-in-one against electric plug with selection function according to claim 1, it is characterized in that zero grounding potential difference detector set is connected across between ground wire and zero line, connect to form step by step by the transformer, rectifying tube, voltage-stabiliser tube, electric capacity of voltage regulation and the late-class circuit that are connected across between ground wire and zero line, late-class circuit is made up of switching tube, Darlington transistor, operational amplifier and monostable circuit respectively, and late-class circuit is connected with the single-chip processor i/o input respectively.
3, the general-purpose electric appliance two-in-one against electric plug with selection function according to claim 1, it is characterized in that two have to connect and are connected with the single-chip processor i/o input respectively with touch-switch one end of break function, and be connected with positive source by resistance, its common end grounding, the connection of two touch-switchs with disconnect to form four kinds of various combinations, be respectively applied for and select in the zero grounding potential difference detector set late-class circuit a kind of in switching tube, Darlington transistor, operational amplifier and the monostable circuit.
4, the general-purpose electric appliance two-in-one against electric plug with selection function according to claim 1, it is characterized in that simulation test touches key and comprises zero line-ground wire potential difference analog signal and live wire and neutral line current differential mode analog signal, provide by scm software, in order to test electric heating tube and other electrical equipment basic insulations and ground wire lost efficacy simultaneously or the situation of ground wire electrification under or electrical work state under live wire electric leakage situation, and show by the luminous tube of different colours.
5, the general-purpose electric appliance two-in-one against electric plug with selection function according to claim 1, it is characterized in that live wire and neutral line current device for detecting difference are connected to form by double operational integrated circuit and magnetic ring coil, live wire and zero line pass magnetic ring coil, and the double operational integrated circuit is connected with the single-chip processor i/o input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200085442U CN201174574Y (en) | 2008-03-16 | 2008-03-16 | General-purpose electric appliance diad anti-electricity plug with selection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200085442U CN201174574Y (en) | 2008-03-16 | 2008-03-16 | General-purpose electric appliance diad anti-electricity plug with selection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201174574Y true CN201174574Y (en) | 2008-12-31 |
Family
ID=40201702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200085442U Expired - Fee Related CN201174574Y (en) | 2008-03-16 | 2008-03-16 | General-purpose electric appliance diad anti-electricity plug with selection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201174574Y (en) |
-
2008
- 2008-03-16 CN CNU2008200085442U patent/CN201174574Y/en not_active Expired - Fee Related
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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: 20081231 |