CN206725677U - A kind of grounding safety Protective Detector - Google Patents
A kind of grounding safety Protective Detector Download PDFInfo
- Publication number
- CN206725677U CN206725677U CN201720497426.1U CN201720497426U CN206725677U CN 206725677 U CN206725677 U CN 206725677U CN 201720497426 U CN201720497426 U CN 201720497426U CN 206725677 U CN206725677 U CN 206725677U
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- resistance
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- switch circuit
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Abstract
The utility model discloses a kind of grounding safety Protective Detector; the first switch circuit SW1; second switch circuit SW2 input is connected after being connected with power circuit, and first switch circuit SW1 output ends are grounded after being connected with light emitting diode D3, resistance R6；The second switch circuit SW2 output ends are grounded after being connected with light emitting diode D4, resistance R5;Resistance R1, resistance R2 series circuits and resistance R3, resistance R4 series circuits are in parallel, it is connected between diode D1 inputs and resistance R1, resistance R2, output end is connected with first switch circuit SW1 Enable Pin, it is connected between diode D2 inputs and resistance R3, resistance R4, output end is connected with second switch circuit SW2 Enable Pin.Utility model works are reliable, no mechanical action, and the life-span is extremely long.
Description
Technical field
A kind of grounding safety Protective Detector is the utility model is related to, belongs to electric circuit inspection technical field.
Background technology
It is growing with household electrical appliance, Electrical Safety already turn into one it is important the problem of.It is well known that ground wire is
The critical circuits of people's life security are protected, with the permanent use of electric wire, the phenomenon of failure occurs sometimes, it is so anti-
And as the killer of threat people's life.
And the old man in family now, have cardio-cerebral diseases waits patient more and more, once shock by electricity, although tripping, this
Individual electric current also can be fatal.The fact that it is of common occurrence, ground wire safety as it is intended that patron saint virtually have left.
Utility model content
Purpose：In order to overcome the deficiencies in the prior art, the utility model provides a kind of grounding safety protection detection
Device.
Technical scheme：In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of grounding safety Protective Detector, including：Power circuit, light emitting diode, first switch circuit SW1, second
On-off circuit SW2, the first switch circuit SW1, second switch circuit SW2 include input, output end, Enable Pin；Institute
Stating light emitting diode includes：Light emitting diode D3, light emitting diode D4；The first switch circuit SW1, second switch circuit
SW2 input is connected after being connected with power circuit, first switch circuit SW1 output ends and light emitting diode D3, resistance
It is grounded after R6 series connection；The second switch circuit SW2 output ends are grounded after being connected with light emitting diode D4, resistance R5;Resistance R1,
Resistance R2 series circuits are in parallel with resistance R3, resistance R4 series circuits, between diode D1 inputs and resistance R1, resistance R2
Be connected, output end is connected with first switch circuit SW1 Enable Pin, diode D2 inputs and resistance R3, resistance R4 it
Between be connected, output end is connected with second switch circuit SW2 Enable Pin；The input of the resistance R1, resistance R2 it is defeated
Enter end, resistance R2 and resistance R4 connection ends and be respectively set to circuit port.
Preferably, in addition to：3rd on-off circuit SW3, the 4th on-off circuit SW4, sounding module I C2, raise one's voice
Device, the 3rd on-off circuit SW3, the 4th on-off circuit SW4 include input, output end, Enable Pin；3rd on-off circuit
SW3 Enable Pin is connected with second switch circuit SW2 output end, and the 3rd on-off circuit SW3 output end is connected with ground connection
Logical, the 3rd on-off circuit SW3 input is connected with the 4th on-off circuit SW4 output end, and the 4th on-off circuit SW4's makes
Energy end is connected with first switch circuit SW1 output end, the 4th on-off circuit SW4 input and connecing for sounding module I C2
Ground terminal is connected, and sounding module I C2 output end is connected with loudspeaker.
Preferably, the power circuit includes transformer, commutation diode D5, filter capacitor C1, the transformation
The low-voltage output of device is in series with commutation diode D5, is parallel with filter capacitor C1, the high voltage input terminal of transformer respectively with electricity
Resistance R1, resistance R2 input are connected, power circuit output direct current 5V voltages.
Preferably, in addition to protective resistance R8, the first switch circuit SW1 output ends are parallel with protective resistance
R8。
Preferably, in addition to protective resistance R7, the second switch circuit SW2 output ends are parallel with protective resistance
R7。
Preferably, the first switch circuit SW1, second switch circuit SW2, the 3rd on-off circuit SW3, the 4th
On-off circuit SW4 uses high resistant MOS switch circuit.
Beneficial effect：A kind of grounding safety Protective Detector provided by the utility model, can quick detection become a Buddhist monk or nun middle phase line,
Whether zero line, the working condition of ground wire are normal, present apparatus reliable operation, no mechanical action, long lifespan, and cost is low.
Brief description of the drawings
Fig. 1 uses schematic diagram to be of the present utility model.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
The core socket of national regulations three should a left side be phase line, the right side is zero line, and center is protective grounding line.As shown in figure 1, by original
Reason figure is visible, in use, the circuit port at resistance R1 is connected with L lines, the circuit port at resistance R3 is connected with N lines,
Resistance R2 is connected with the circuit port at resistance R4 with ground wire, after transformer inputs with phase line, zero line by being connected, is
This detector provides DC5V power supplys.
When three lines are intact, D1 just extremely high potentials, SW1 is opened, and N lines and ground wire are low potential, i.e. the positive Very Low Potential of D2
Positive 5V forms loop through SW1 and D3, R6, and light emitting diode D3 is bright.
When L lines and N line reversal connections, D2 positive pole high potentials, D1 positive pole low ground potentials.SW2 is opened, and SW1 is closed.Positive 5V warps
SW2, D4, R5 form loop, and light emitting diode D4 is bright.
When ground wire disconnects, D1, D2 positive poles are all high potential.SW1, SW2 are opened simultaneously.Then light emitting diode D3 and D4 is double
Lamp is bright together.Because D3, D4 positive pole are all high potential, SW3 and SW4 are opened, and IC2 work, music has acoustic alarm, illustrate to protect ground wire
It is already off.
It should be immediately checked for, try to avert accidents.It can check whether all sockets are intact in family one by one with this tester.
And be fixed and be inserted on a no socket, the serviceable condition as patron saint, day and night monitoring ground wire bus.It to avoid
The whole powered dire consequences of all household electrical appliance.It is demonstrated experimentally that its reliable operation, no mechanical action, life-span are extremely long.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of grounding safety Protective Detector, including：Power circuit, light emitting diode, it is characterised in that：First switch circuit
SW1, second switch circuit SW2, the first switch circuit SW1, second switch circuit SW2 include input, output end, made
Can end；The light emitting diode includes：Light emitting diode D3, light emitting diode D4；The first switch circuit SW1, second opens
Powered-down road SW2 input is connected after being connected with power circuit, first switch circuit SW1 output ends and light emitting diode
It is grounded after D3, resistance R6 series connection；The second switch circuit SW2 output ends are grounded after being connected with light emitting diode D4, resistance R5;
Resistance R1, resistance R2 series circuits and resistance R3, resistance R4 series circuits are in parallel, diode D1 inputs and resistance R1, electricity
It is connected between resistance R2, output end is connected with first switch circuit SW1 Enable Pin, diode D2 inputs and resistance R3,
It is connected between resistance R4, output end is connected with second switch circuit SW2 Enable Pin；Input, the electricity of the resistance R1
Resistance R2 input, resistance R2 and resistance R4 connection ends is respectively set to circuit port.
A kind of 2. grounding safety Protective Detector according to claim 1, it is characterised in that：Also include：3rd switch electricity
Road SW3, the 4th on-off circuit SW4, sounding module I C2, loudspeaker, the 3rd on-off circuit SW3, the 4th on-off circuit SW4
Include input, output end, Enable Pin；3rd on-off circuit SW3 Enable Pin and second switch circuit SW2 output end phase
Connection, the 3rd on-off circuit SW3 output end are connected with ground connection, the 3rd on-off circuit SW3 input and the 4th switch electricity
Road SW4 output end is connected, and the 4th on-off circuit SW4 Enable Pin is connected with first switch circuit SW1 output end, the
Four on-off circuit SW4 input is connected with sounding module I C2 earth terminal, sounding module I C2 output end and loudspeaker
It is connected.
A kind of 3. grounding safety Protective Detector according to claim 1, it is characterised in that：The power circuit includes becoming
Depressor, commutation diode D5, filter capacitor C1, the low-voltage output of the transformer are in series with commutation diode D5, are parallel with
Filter capacitor C1, the input of the high voltage input terminal of transformer respectively with resistance R1, resistance R2 are connected, and power circuit output is straight
Flow 5V voltages.
A kind of 4. grounding safety Protective Detector according to claim 2, it is characterised in that：Also include protective resistance R8,
The first switch circuit SW1 output ends are parallel with protective resistance R8.
A kind of 5. grounding safety Protective Detector according to claim 1, it is characterised in that：Also include protective resistance R7,
The second switch circuit SW2 output ends are parallel with protective resistance R7.
A kind of 6. grounding safety Protective Detector according to claim 2, it is characterised in that：The first switch circuit
SW1, second switch circuit SW2, the 3rd on-off circuit SW3, the 4th on-off circuit SW4 use high resistant MOS switch circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497426.1U CN206725677U (en) | 2017-05-05 | 2017-05-05 | A kind of grounding safety Protective Detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497426.1U CN206725677U (en) | 2017-05-05 | 2017-05-05 | A kind of grounding safety Protective Detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725677U true CN206725677U (en) | 2017-12-08 |
Family
ID=60510241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720497426.1U Expired - Fee Related CN206725677U (en) | 2017-05-05 | 2017-05-05 | A kind of grounding safety Protective Detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950453A (en) * | 2017-05-05 | 2017-07-14 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
-
2017
- 2017-05-05 CN CN201720497426.1U patent/CN206725677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950453A (en) * | 2017-05-05 | 2017-07-14 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
| CN106950453B (en) * | 2017-05-05 | 2023-09-12 | 南京信息工程大学 | Grounding safety protection detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20190505 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |