CN205720392U - Non-contact zero live wire detects warning circuit and instrument automatically - Google Patents
Non-contact zero live wire detects warning circuit and instrument automatically Download PDFInfo
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- CN205720392U CN205720392U CN201620668560.9U CN201620668560U CN205720392U CN 205720392 U CN205720392 U CN 205720392U CN 201620668560 U CN201620668560 U CN 201620668560U CN 205720392 U CN205720392 U CN 205720392U
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Abstract
This utility model relates to a kind of non-contact zero live wire and automatically detects warning circuit, it is characterised in that include electric field induction sensor, the first diode, the first resistance, metal-oxide-semiconductor, the second resistance；The positive pole of described electric field induction sensor and the first diode connects, and the negative pole of described first diode and one end of the first resistance connect, and the other end of described first resistance is connected with the G pole of metal-oxide-semiconductor；The D level of metal-oxide-semiconductor is connected with one end of the second resistance and warning circuit outfan, and the S level of metal-oxide-semiconductor is connected with end of connecting wires；Another termination digital power voltage of second resistance.Understanding based on aforementioned schemes, this utility model circuit is simple, and reliability is high, it is only necessary to by an induction apparatus, and these discrete devices of diode, resistance, metal-oxide-semiconductor coordinate firmware program to complete detection；Easy for installation, can be directly embedded in electrical equipment.The application is also claimed a kind of instrument.
Description
[technical field]
This utility model relates to electric instrument apparatus field, particularly relates to non-contact zero live wire and automatically detects alarm electricity
Road.
[background technology]
When survey object is the most charged now, it is necessary to use special test pen.When contact electroprobe test electrical body,
Electroprobe, human body, the earth constitute path, are indicated whether charged by neon tube luminous；Vicarious electroprobe is by experiencing electrical body, people
The electric field signal that body, the earth are constituted, follow-up through amplifying shaping, indicate whether charged finally by sound, light etc..
[utility model content]
For solving foregoing problems, the utility model proposes a kind of non-contact zero live wire being integrated in instrument and automatically examine
Survey warning circuit and corresponding instrument.
For reaching object defined above, this utility model adopts the following technical scheme that a kind of non-contact zero live wire detects automatically
Warning circuit, it is characterised in that include electric field induction sensor, the first diode, the first resistance, metal-oxide-semiconductor, the second resistance；
The positive pole of described electric field induction sensor and the first diode connects, the negative pole and first of described first diode
One end of resistance connects, and the other end of described first resistance is connected with the G pole of metal-oxide-semiconductor；
The D level of metal-oxide-semiconductor is connected with one end of the second resistance and warning circuit outfan, and the S level of metal-oxide-semiconductor connects with end of connecting wires
Connect；Another termination digital power voltage of second resistance.
First preferred version of the present utility model by: described in connect wires end connected wires as zero line or live wire.
Second preferred version of the present utility model is: a kind of instrument, including single-chip microcomputer, it is characterised in that: include that right is wanted
Asking non-contact zero live wire described in 1 or 2 automatically to detect warning circuit, an input of described single-chip microcomputer connects described alarm electricity
Road outfan.
This utility model can reach following technique effect: circuit is simple, and reliability is high, it is only necessary to by an induction apparatus,
These discrete devices of diode, resistance, metal-oxide-semiconductor coordinate firmware program to complete detection；Easy for installation, electrical equipment can be directly embedded into
In.
These features of the present utility model and advantage will be detailed in following detailed description of the invention, accompanying drawing exposure.
[accompanying drawing explanation]
Below in conjunction with the accompanying drawings this utility model is described further:
Fig. 1 is the circuit theory diagrams of this utility model embodiment 1.
[detailed description of the invention]
Below in conjunction with the accompanying drawing of this utility model embodiment the technical scheme of this utility model embodiment explained and
Illustrate, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in embodiment,
Those skilled in the art are obtained other embodiments on the premise of not making creative work, broadly fall into of the present utility model
Protection domain.
Embodiment 1.
Referring to Fig. 1, a kind of non-contact zero live wire detects warning circuit automatically, including electric field induction sensor
Sense, the first diode D1, the first resistance R1, metal-oxide-semiconductor Q1, the second resistance R2；
The positive pole of described electric field induction sensor sense and the first diode D1 connects, described first diode D1's
One end of negative pole and the first resistance R1 connects, and the described other end of the first resistance R1 is connected with the G pole of metal-oxide-semiconductor Q1；Metal-oxide-semiconductor Q1's
D level is connected with one end and the warning circuit outfan LN OUT of the second resistance R2, and the S level of metal-oxide-semiconductor is connected with the end REF that connects wires；
Another termination digital power voltage DVDD of the second resistance R2.The end REF that connects wires is connected wires as zero line or live wire.Electric field induction
Formula sensor sense can be a sheet metal.
In work process, when the end REF that connects wires is connect as zero line, warning circuit outfan LN OUT is high level；When
When the end REF that connects wires is live wire, warning circuit outfan LN OUT is 50Hz square wave.When testee is charged, electric field induction
Formula sensor acquisition charged signal is also carried out current limliting by the first resistance R1 after the first diode D1 carries out halfwave rectifier, and rear-guard
Dynamic metal-oxide-semiconductor Q1 opens.Then, warning circuit outfan LN OUT outputting alarm signal.
A kind of instrument, including single-chip microcomputer, aforementioned non-contact zero live wire detects warning circuit, the one of described single-chip microcomputer automatically
Individual input connects described warning circuit outfan LN OUT, and when receiving warning signal, other device in control instrument sends
Alarm signal, such as sound and light alarm, wireless alarm signal etc..
The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to
In this, it is familiar with this those skilled in the art and should be understood that this utility model includes but not limited to accompanying drawing and specific embodiment party above
Content described in formula.Any amendment without departing from function of the present utility model and structural principle is intended to be included in claims
Scope in.
Claims (3)
1. a non-contact zero live wire detects warning circuit automatically, it is characterised in that include electric field induction sensor, first
Diode, the first resistance, metal-oxide-semiconductor, the second resistance；
The positive pole of described electric field induction sensor and the first diode connects, the negative pole of described first diode and the first resistance
One end connect, the other end of described first resistance is connected with the G pole of metal-oxide-semiconductor；
The D level of metal-oxide-semiconductor is connected with one end of the second resistance and warning circuit outfan, and the S level of metal-oxide-semiconductor is connected with end of connecting wires；
Another termination digital power voltage of second resistance.
The most according to claim 1, non-contact zero live wire detects warning circuit automatically, it is characterised in that end of connecting wires described in:
Connected wires as zero line or live wire.
3. an instrument, including single-chip microcomputer, it is characterised in that: include that described in claim 1 or 2, non-contact zero live wire is examined automatically
Surveying warning circuit, an input of described single-chip microcomputer connects described warning circuit outfan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620668560.9U CN205720392U (en) | 2016-06-24 | 2016-06-24 | Non-contact zero live wire detects warning circuit and instrument automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620668560.9U CN205720392U (en) | 2016-06-24 | 2016-06-24 | Non-contact zero live wire detects warning circuit and instrument automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205720392U true CN205720392U (en) | 2016-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620668560.9U Active CN205720392U (en) | 2016-06-24 | 2016-06-24 | Non-contact zero live wire detects warning circuit and instrument automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205720392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315105A (en) * | 2017-04-27 | 2017-11-03 | 柳州铁道职业技术学院 | Vehicle current monitors sensor |
-
2016
- 2016-06-24 CN CN201620668560.9U patent/CN205720392U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107315105A (en) * | 2017-04-27 | 2017-11-03 | 柳州铁道职业技术学院 | Vehicle current monitors sensor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |