CN204188817U - A kind of telescopic power lead detector - Google Patents
A kind of telescopic power lead detector Download PDFInfo
- Publication number
- CN204188817U CN204188817U CN201420692454.5U CN201420692454U CN204188817U CN 204188817 U CN204188817 U CN 204188817U CN 201420692454 U CN201420692454 U CN 201420692454U CN 204188817 U CN204188817 U CN 204188817U
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- China
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- expansion link
- line
- sound signal
- signal amplification
- amplification chip
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- 230000003321 amplification Effects 0.000 claims abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 17
- 230000005236 sound signal Effects 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 12
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model relates to a kind of telescopic power lead detector, according to hidden wiring AC signal and determine that its electric wire moves towards within the walls such as the indoor wall of detection and roof etc., belongs to interior circuit detection technique field.Technical scheme: probe (5) is arranged on the top of expansion link (3), the bottom of expansion link is provided with earphone jack (10), one end plugged earphone jack (10) of line (2), the other end frames connecting with headphone of line; Be provided with testing circuit in described probe, coil (7) is wrapped on ferrite (6) and forms detecting unit, and detecting unit output terminal is connected with sound signal amplification chip (4), and the output terminal of sound signal amplification chip connects audio output (11); Battery (9) and switch (8) form the power supply unit of testing circuit.The beneficial effects of the utility model: be easy to carry, use sensitive, Detection results is good; By the induced signal of the tested hidden wiring of test, line alignment can be found out, significantly improves work efficiency.
Description
Technical field
The utility model relates to a kind of telescopic power lead detector, according to hidden wiring AC signal and determine that its electric wire moves towards within the walls such as the indoor wall of detection and roof etc., belongs to interior circuit detection technique field.
Background technology
In routine work and life, we can run into and often run into the not clear situation of line alignment, especially in old old factory rehabilitation and old building finishing process, do not know that circuit moves towards, bring not molehill to work.The hunting proving installation of background technology, mainly for land burial cable, its price also costly, uses and carries also inconvenient, bulky, and is not suitable for wall body of wall and roof eminence electric wire trend in detecting chamber.
Utility model content
The utility model object is to provide a kind of telescopic power lead detector, small in volume, and telescopic structure, is easy to carry, and uses sensitive, solves Problems existing in background technology.
The technical solution of the utility model is:
A kind of telescopic power lead detector, comprises earphone, probe, line and expansion link, and probe is arranged on the top of expansion link, and the bottom of expansion link is provided with earphone jack, one end plugged earphone jack of line, the other end frames connecting with headphone of line; Testing circuit is provided with in described probe, testing circuit comprises sound signal amplification chip, ferrite, coil, switch, battery and audio output, coil winding forms detecting unit on the ferrite, detecting unit output terminal is connected with sound signal amplification chip, and the output terminal of sound signal amplification chip connects audio output; Battery and switch form the power supply unit of testing circuit.
Be installed with wire in described expansion link, wire one end connects the audio output being positioned at expansion link top, and the wire other end is connected with the earphone jack being positioned at expansion link bottom.
Use the utility model, telescopic height and length free adjustment, when popping one's head near indoor wall and roof, if inner lead has the electric current of more than 0.1A just can sense, thus know the line alignment between consumer and power supply, for line maintenance and transformation bring convenience.
The beneficial effects of the utility model: be easy to carry, use sensitive, Detection results is good; By the induced signal of the tested hidden wiring of test, line alignment can be found out, significantly improves work efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram;
Fig. 2 is the utility model circuit theory diagrams;
In figure: earphone 1, line 2, expansion link 3, sound signal amplification chip 4, probe 5, ferrite 6, coil 7, switch 8, battery 9, earphone jack 10, audio output 11.
Embodiment
Below in conjunction with accompanying drawing, by example, the utility model is described in further detail.
A kind of telescopic power lead detector, comprise earphone 1, probe 5, line 2 and expansion link 3, probe is arranged on the top of expansion link, and the bottom of expansion link is provided with earphone jack 10, one end plugged earphone jack 10 of line 2, the other end frames connecting with headphone of line; Testing circuit is provided with in described probe, testing circuit comprises sound signal amplification chip 4, ferrite 6, coil 7, switch 8, battery 9 and audio output 11, coil 7 is wrapped on ferrite 6 and forms detecting unit, detecting unit output terminal is connected with sound signal amplification chip 4, and the output terminal of sound signal amplification chip connects audio output 11; Battery 9 and switch 8 form the power supply unit of testing circuit, battery 9 by after switch 8 for testing circuit is powered.
Be installed with wire in described expansion link, wire one end connects the audio output 11 being positioned at expansion link top, and the wire other end is connected with the earphone jack 10 being positioned at expansion link bottom.
Be provided with electric capacity C3 between detecting unit and sound signal amplification chip 4, between the output terminal of sound signal amplification chip and audio output 11, be provided with filter capacitor C5 and electric capacity C6.
The utility model signal amplification process; Ferrite 6, coil 7 form resonant tank, for responding to the interchange wireless electromagnetic field signal of 50HZ.After electric capacity C3, enter sound signal amplification chip 4 amplify 200 times, sound signal amplification chip model is LM386; After amplifying signal C5 filtering, output to audio output through electric capacity C6, then through earphone jack lug machine, export the sound of the alternating current of 50hz.
Use the utility model, telescopic height and length free adjustment, when popping one's head near indoor wall and roof, if inner lead has the electric current of more than 0.1A just can sense, thus know the line alignment between consumer and power supply, for line maintenance and transformation bring convenience.
Claims (2)
1. a telescopic power lead detector, it is characterized in that: comprise earphone (1), probe (5), line (2) and expansion link (3), probe is arranged on the top of expansion link, the bottom of expansion link is provided with earphone jack (10), one end plugged earphone jack (10) of line (2), the other end frames connecting with headphone of line; Testing circuit is provided with in described probe, testing circuit comprises sound signal amplification chip (4), ferrite (6), coil (7), switch (8), battery (9) and audio output (11), coil (7) is wrapped on ferrite (6) and forms detecting unit, detecting unit output terminal is connected with sound signal amplification chip (4), and the output terminal of sound signal amplification chip connects audio output (11); Battery (9) and switch (8) form the power supply unit of testing circuit.
2. the telescopic power lead detector of one according to claim 1, it is characterized in that: in described expansion link, be installed with wire, wire one end connects the audio output (11) being positioned at expansion link top, and the wire other end is connected with the earphone jack (10) being positioned at expansion link bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692454.5U CN204188817U (en) | 2014-11-18 | 2014-11-18 | A kind of telescopic power lead detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692454.5U CN204188817U (en) | 2014-11-18 | 2014-11-18 | A kind of telescopic power lead detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204188817U true CN204188817U (en) | 2015-03-04 |
Family
ID=52620800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420692454.5U Active CN204188817U (en) | 2014-11-18 | 2014-11-18 | A kind of telescopic power lead detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204188817U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154312A (en) * | 2016-08-26 | 2016-11-23 | 国家电网公司 | Not clear line alignment tester |
| CN110441825A (en) * | 2019-09-04 | 2019-11-12 | 上海海事大学 | The visible detection method of electric wire within the walls |
-
2014
- 2014-11-18 CN CN201420692454.5U patent/CN204188817U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106154312A (en) * | 2016-08-26 | 2016-11-23 | 国家电网公司 | Not clear line alignment tester |
| CN110441825A (en) * | 2019-09-04 | 2019-11-12 | 上海海事大学 | The visible detection method of electric wire within the walls |
| CN110441825B (en) * | 2019-09-04 | 2021-04-27 | 上海海事大学 | Visual detection method for electric wire in wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |