CN106950453B - Grounding safety protection detector - Google Patents
Grounding safety protection detector Download PDFInfo
- Publication number
- CN106950453B CN106950453B CN201710310383.6A CN201710310383A CN106950453B CN 106950453 B CN106950453 B CN 106950453B CN 201710310383 A CN201710310383 A CN 201710310383A CN 106950453 B CN106950453 B CN 106950453B
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- resistor
- switch circuit
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- diode
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention discloses a grounding safety protection detector, wherein the input ends of a first switch circuit SW1 and a second switch circuit SW2 are connected and then communicated with a power circuit, and the output end of the first switch circuit SW1 is connected in series with a light emitting diode D3 and a resistor R6 and then grounded; the output end of the second switch circuit SW2 is connected with the LED D4 and the resistor R5 in series and then grounded, the resistor R1 and the resistor R2 series circuit are connected with the resistor R3 and the resistor R4 series circuit in parallel, the input end of the diode D1 is connected with the resistor R1 and the resistor R2, the output end of the diode D2 is connected with the enabling end of the first switch circuit SW1, the input end of the diode D2 is connected with the resistor R3 and the resistor R4, and the output end of the diode D2 is connected with the enabling end of the second switch circuit SW 2. The invention has reliable operation, no mechanical action and extremely long service life.
Description
Technical Field
The invention relates to a grounding safety protection detector, and belongs to the technical field of circuit detection.
Background
With the increasing development of household appliances, the safety of electricity consumption has long become an important issue. As is well known, the ground wire is a key line for protecting the life safety of people, and the wire sometimes fails with long-term use, so that the ground wire becomes a killer for threatening the life of people.
In the elderly in the present day, patients with heart and brain diseases are more and more, and once electric shock occurs, the current is fatal even though the current trips. This fact has been common, and the ground wire safety has been virtually left as a desired guard.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a grounding safety protection detector.
The technical scheme is as follows: in order to solve the technical problems, the invention adopts the following technical scheme:
a ground safety protection detector comprising: the LED power supply comprises a power supply circuit, a light emitting diode, a first switch circuit SW1, a second switch circuit SW2, wherein the first switch circuit SW1 and the second switch circuit SW2 comprise an input end, an output end and an enabling end; the light emitting diode includes: light emitting diode D3, light emitting diode D4; the input end of the first switch circuit SW1 is connected with the second switch circuit SW2 and then communicated with the power supply circuit, and the output end of the first switch circuit SW1 is connected with the light emitting diode D3 and the resistor R6 in series and then grounded; the output end of the second switch circuit SW2 is connected with the LED D4 and the resistor R5 in series and then grounded, the resistor R1 and the resistor R2 series circuit are connected with the resistor R3 and the resistor R4 series circuit in parallel, the input end of the diode D1 is connected with the resistor R1 and the resistor R2, the output end of the diode D2 is connected with the enabling end of the first switch circuit SW1, the input end of the diode D2 is connected with the resistor R3 and the resistor R4, and the output end of the diode D2 is connected with the enabling end of the second switch circuit SW 2; the input end of the resistor R1, the input end of the resistor R2 and the connection end of the resistor R2 and the resistor R4 are respectively arranged as circuit ports.
Preferably, the method further comprises: the sound generating circuit comprises a third switch circuit SW3, a fourth switch circuit SW4, a sound generating module IC2 and a loudspeaker, wherein the third switch circuit SW3 and the fourth switch circuit SW4 comprise an input end, an output end and an enabling end; the enabling end of the third switch circuit SW3 is connected with the output end of the second switch circuit SW2, the output end of the third switch circuit SW3 is communicated with the ground, the input end of the third switch circuit SW3 is connected with the output end of the fourth switch circuit SW4, the enabling end of the fourth switch circuit SW4 is connected with the output end of the first switch circuit SW1, the input end of the fourth switch circuit SW4 is connected with the ground end of the sounding module IC2, and the output end of the sounding module IC2 is connected with a loudspeaker.
As a preferred scheme, the power supply circuit comprises a transformer, a rectifier diode D5 and a filter capacitor C1, wherein the rectifier diode D5 is connected in series with the low-voltage output end of the transformer, the filter capacitor C1 is connected in parallel with the low-voltage output end of the transformer, the high-voltage input end of the transformer is respectively connected with the input ends of a resistor R1 and a resistor R2, and the power supply circuit outputs direct-current 5V voltage.
Preferably, the circuit further comprises a protection resistor R8, and the output end of the first switch circuit SW1 is connected with the protection resistor R8 in parallel.
Preferably, the circuit further comprises a protection resistor R7, and the output end of the second switch circuit SW2 is connected with the protection resistor R7 in parallel.
Preferably, the first switch circuit SW1, the second switch circuit SW2, the third switch circuit SW3 and the fourth switch circuit SW4 are all high-resistance MOS switch circuits.
The beneficial effects are that: the grounding safety protection detector provided by the invention can be used for rapidly detecting whether the working conditions of the phase line, the zero line and the ground line in a house are normal, and the device is reliable in operation, free of mechanical action, long in service life and low in cost.
Drawings
FIG. 1 is a schematic representation of the use of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The national standard prescribes that the three-core socket should be left as a phase line, right as a zero line and the center as a protection grounding wire. As shown in fig. 1, when the detector is used, the circuit port at the resistor R1 is connected with the L line, the circuit port at the resistor R3 is connected with the N line, the circuit port at the resistor R2 and the resistor R4 is connected with the ground line, and the input end of the transformer is communicated with the phase line and the zero line to provide a DC5V power supply for the detector.
When the three lines are intact, the positive electrode of the D1 is at high potential, the SW1 is opened, the N line and the ground line are at low potential, namely the positive electrode of the D2 is at low potential, the positive electrode 5V forms a loop with the D3 and the R6 through the SW1, and the light-emitting diode D3 is bright.
When the L line and the N line are reversely connected, the positive electrode of the D2 is at a high potential, and the positive electrode of the D1 is at a low potential. SW2 is on and SW1 is off. The positive 5V forms a loop through SW2, D4 and R5, and the light emitting diode D4 is bright.
When the ground line is disconnected, the anodes of D1 and D2 are both at high potential. SW1, SW2 are simultaneously on. The leds D3 and D4 are lit. Because the anodes of D3 and D4 are both high, SW3 and SW4 are opened, IC2 works, and music sounds an alarm, which indicates that the protection ground wire has been disconnected.
The test should be immediately performed to prevent accidents. The tester can be used to check one by one whether all sockets in the home are intact. And fixedly plugging the ground wire bus into a non-used socket to serve as a guard for monitoring the sound state of the ground wire bus day and night. So as to avoid the terrible consequence of all household appliances being fully charged. Experiments prove that the device has reliable operation, no mechanical action and extremely long service life.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. A ground safety protection detector comprising: the power supply circuit, luminescent diode, its characterized in that: the first switch circuit SW1 and the second switch circuit SW2 comprise an input end, an output end and an enabling end; the light emitting diode includes: light emitting diode D3, light emitting diode D4; the input end of the first switch circuit SW1 is connected with the second switch circuit SW2 and then communicated with the power supply circuit, and the output end of the first switch circuit SW1 is connected with the light emitting diode D3 and the resistor R6 in series and then grounded; the output end of the second switch circuit SW2 is connected with the LED D4 and the resistor R5 in series and then grounded, the resistor R1 and the resistor R2 series circuit are connected with the resistor R3 and the resistor R4 series circuit in parallel, the input end of the diode D1 is connected with the resistor R1 and the resistor R2, the output end of the diode D2 is connected with the enabling end of the first switch circuit SW1, the input end of the diode D2 is connected with the resistor R3 and the resistor R4, and the output end of the diode D2 is connected with the enabling end of the second switch circuit SW 2; the input end of the resistor R1, the input end of the resistor R3 and the connecting end of the resistor R2 and the resistor R4 are respectively set as circuit ports;
further comprises: the sound generating circuit comprises a third switch circuit SW3, a fourth switch circuit SW4, a sound generating module IC2 and a loudspeaker, wherein the third switch circuit SW3 and the fourth switch circuit SW4 comprise an input end, an output end and an enabling end; the enabling end of the third switch circuit SW3 is connected with the output end of the second switch circuit SW2, the output end of the third switch circuit SW3 is communicated with the ground, the input end of the third switch circuit SW3 is connected with the output end of the fourth switch circuit SW4, the enabling end of the fourth switch circuit SW4 is connected with the output end of the first switch circuit SW1, the input end of the fourth switch circuit SW4 is connected with the ground end of the sounding module IC2, and the output end of the sounding module IC2 is connected with a loudspeaker;
the power supply circuit comprises a transformer, a rectifier diode D5 and a filter capacitor C1, wherein the rectifier diode D5 is connected in series with the low-voltage output end of the transformer, the filter capacitor C1 is connected in parallel with the low-voltage output end of the transformer, the high-voltage input end of the transformer is respectively connected with the input ends of a resistor R1 and a resistor R3, and the power supply circuit outputs direct-current 5V voltage.
2. A ground safety protection detector according to claim 1, wherein: the circuit also comprises a protection resistor R8, and the output end of the first switch circuit SW1 is connected with the protection resistor R8 in parallel.
3. A ground safety protection detector according to claim 1, wherein: the circuit also comprises a protection resistor R7, and the output end of the second switch circuit SW2 is connected with the protection resistor R7 in parallel.
4. A ground safety protection detector according to claim 1, wherein: the first switch circuit SW1, the second switch circuit SW2, the third switch circuit SW3 and the fourth switch circuit SW4 all adopt high-resistance MOS switch circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310383.6A CN106950453B (en) | 2017-05-05 | 2017-05-05 | Grounding safety protection detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710310383.6A CN106950453B (en) | 2017-05-05 | 2017-05-05 | Grounding safety protection detector |
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| Publication Number | Publication Date |
|---|---|
| CN106950453A CN106950453A (en) | 2017-07-14 |
| CN106950453B true CN106950453B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710310383.6A Active CN106950453B (en) | 2017-05-05 | 2017-05-05 | Grounding safety protection detector |
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| Country | Link |
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| CN (1) | CN106950453B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201199583Y (en) * | 2007-08-29 | 2009-02-25 | 钱加灿 | All-purpose safety plug capable of preventing earth wire contact from non-conducting |
| CN102243286A (en) * | 2011-05-17 | 2011-11-16 | 李英岱 | Apparatus for detecting and displaying grounding state of equipment or socket |
| CN102544930A (en) * | 2012-03-07 | 2012-07-04 | 佛山市新基德电子厂有限公司 | Leakage protection plug |
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN203300911U (en) * | 2013-06-20 | 2013-11-20 | 佛山市顺德区澳骏电子科技有限公司 | Safe earth leakage protection plug with charged ground line alarm function |
| CN204131087U (en) * | 2014-07-29 | 2015-01-28 | 余姚市中建电器有限公司 | Earth leakage protective device |
| CN205141289U (en) * | 2015-07-28 | 2016-04-06 | 深圳市良辉科技有限公司 | Convertible ground wire protected mode's leakage protection plug |
| CN106066443A (en) * | 2016-06-07 | 2016-11-02 | 浙江医药高等专科学校 | The sample circuit of a kind of safety ground detector and safety ground detector |
| CN106169733A (en) * | 2016-06-07 | 2016-11-30 | 佛山市顺德区信辉达电子有限公司 | Conversion voltage-type leakage protecting plug |
| CN206725677U (en) * | 2017-05-05 | 2017-12-08 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
-
2017
- 2017-05-05 CN CN201710310383.6A patent/CN106950453B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201199583Y (en) * | 2007-08-29 | 2009-02-25 | 钱加灿 | All-purpose safety plug capable of preventing earth wire contact from non-conducting |
| CN102243286A (en) * | 2011-05-17 | 2011-11-16 | 李英岱 | Apparatus for detecting and displaying grounding state of equipment or socket |
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN102544930A (en) * | 2012-03-07 | 2012-07-04 | 佛山市新基德电子厂有限公司 | Leakage protection plug |
| CN203300911U (en) * | 2013-06-20 | 2013-11-20 | 佛山市顺德区澳骏电子科技有限公司 | Safe earth leakage protection plug with charged ground line alarm function |
| CN204131087U (en) * | 2014-07-29 | 2015-01-28 | 余姚市中建电器有限公司 | Earth leakage protective device |
| CN205141289U (en) * | 2015-07-28 | 2016-04-06 | 深圳市良辉科技有限公司 | Convertible ground wire protected mode's leakage protection plug |
| CN106066443A (en) * | 2016-06-07 | 2016-11-02 | 浙江医药高等专科学校 | The sample circuit of a kind of safety ground detector and safety ground detector |
| CN106169733A (en) * | 2016-06-07 | 2016-11-30 | 佛山市顺德区信辉达电子有限公司 | Conversion voltage-type leakage protecting plug |
| CN206725677U (en) * | 2017-05-05 | 2017-12-08 | 南京信息工程大学 | A kind of grounding safety Protective Detector |
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| 董延红 ; .家庭电路中零线断路的危害及检测.中学物理.2014,(06),全文. * |
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| CN106950453A (en) | 2017-07-14 |
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