CN1180277C - Hidden line detection instrument - Google Patents
Hidden line detection instrument Download PDFInfo
- Publication number
- CN1180277C CN1180277C CNB021342369A CN02134236A CN1180277C CN 1180277 C CN1180277 C CN 1180277C CN B021342369 A CNB021342369 A CN B021342369A CN 02134236 A CN02134236 A CN 02134236A CN 1180277 C CN1180277 C CN 1180277C
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- Prior art keywords
- dark line
- indicator
- induction current
- detecting
- electriferous
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Abstract
The present invention discloses a dark line detecting instrument. In the past, original wires are likely to be damaged during wire installation or construction due to the deficiency of a meter or an instrument used for detecting the accurate position of a dark line, and accidents are caused. The dark line detecting instrument of the present invention has the structure that a weak magnetic field generated around the electriferous dark line is received by a detecting head with a coil L which generates induction current by electromagnetic induction, and the induction current is amplified by an operation amplifier LC1 after passing a resistor R1; then, the induction current is outputted to an indicator after rectified and filtered by a rectifying and filtering circuit D, the coil L wound on the detecting head is utilized to generate the induction current for the weak magnetic field around the electriferous dark line, enough power is provided for the indicator, and the accurate position of the electriferous dark line is judged by the deflecting direction of an indicating needle of the indicator. Therefore, the position of the electriferous dark line can be accurately avoided during construction or wire installation, the safety of the construction can be guaranteed, and a whole product has the advantages of simple structure and easy use. The present invention is suitable for detecting the position of the dark line.
Description
Technical field
The present invention relates to a kind of detection instrument, particularly a kind of hidden line detection instrument.
Background technology
Owing to lack instrument or the instrument of surveying the accurate position of concealed wire, when construction or installation electric wire, owing to can not find in the wall exactly or underground concealed wire position, the very possible origin wire that damages, the little normal supply that then destroys power supply, greatly then cause the human life injures and deaths, cause the heavy losses of lives and properties.
Summary of the invention
At the problems referred to above, the invention provides a kind of hidden line detection instrument that can detect the concealed wire particular location exactly simple in structure, easy to use.
The technical solution adopted for the present invention to solve the technical problems is:
Hidden line detection instrument, comprise that panel is provided with inching switch, power switch, the shell of pilot lamp, the detecting head of belt coil is installed in the enclosure, detecting head receives the little magnetic field that produces around the charged concealed wire, coil L produces induction current through electromagnetic induction, induction current sends to the operational amplifier that is in series by two or more amplifier integrated packages through resistance R 1, be parallel with a screw mandrel regulator W on the operational amplifier LC2, sensor current signal is after operational amplifier amplifies, behind current rectifying and wave filtering circuit D rectifying and wave-filtering, export to indicator again, be parallel with the diode D1 and the D2 of two reverse parallel connections on the indicator respectively.
The invention has the beneficial effects as follows: hidden line detection instrument utilize on the detecting head around coil L the little magnetic field that produces around the charged concealed wire is produced induction current, induction current is exported to indicator behind transport and placing device amplification, rectifier filer rectifying and wave-filtering, the accurate position of charged concealed wire is judged by the rotation direction by indicator pointer or the bright-dark degree of indicator lamp, thereby when construction or installation electric wire, avoid the position of charged concealed wire exactly, guarantee the safety of construction, entire product simple in structure, easy to use.
Description of drawings
The present invention is described in more detail below in conjunction with drawings and Examples:
Fig. 1 is a principle of work block scheme of the present invention;
Fig. 2 is a principle of work circuit diagram of the present invention;
Fig. 3 is sonde configuration figure of the present invention;
Fig. 4 is a stereo appearance figure of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, hidden line detection instrument, comprise that panel is provided with inching switch, power switch, the shell 20 of pilot lamp, the detecting head 1 that it is characterized in that belt coil L is installed in the shell 20, detecting head 1 receives the little magnetic field that produces around the charged concealed wire, coil L produces induction current through electromagnetic induction, induction current sends to the operational amplifier that is in series by two or more computing integrated packages through resistance R 1, be parallel with a screw mandrel regulator W on the operational amplifier LC2, screw mandrel regulator W links to each other with inching switch on the panel, sensor current signal is after operational amplifier amplifies, behind current rectifying and wave filtering circuit D rectifying and wave-filtering, export to indicator 2 again, be parallel with the diode D1 and the D2 of two reverse parallel connections on the indicator 2 respectively.Because very faint of the magnetic field that produces around the charged concealed wire, the induction current that produces among the coil L is also not too large comparatively speaking, therefore, we must be amplified the electric current in the entire circuit, therefore, the present invention is stability and the accuracy in order to keep product better in circuit, the present invention has adopted two amplifier integrated package LC1, LC2 is composed in series a transport and placing device, induction current sends to amplifier integrated package LC1 through resistance R 1, the 5 pin ground connection of LC1,4,6,7, be connected to resistance R 5 on 8 pin respectively, R2, R3, R4, wherein 4,8 pin are respectively by capacitor C 2, C1 ground connection, amplifier integrated package LC1 amplifies signal after R3 sends to LC2, the 3 pin ground connection of LC2,1 pin meets filter capacitor C3, whole transport and placing device is under the power supply state of supply of enough keeping rectifier filer D rectifying and wave-filtering back pointer 2, induction current is more little, the transport and placing device of required use is many more, just so the entire circuit apparatus structure is too complicated, and expense height, therefore, being composed in series a transport and placing device by two amplifier integrated package LC1 and LC2 is the most rational selection.In addition, resistance R 6 and capacitor C 4 can play protection indicator A, and the resistance R 7 and the diode N that are connected in parallel on the entire circuit both can shield, and diode N just can be used as panel leds, and K switch is as the panel power switch.With reference to Fig. 2, Fig. 4, if the electric current that induction produces is little, we can have certain needle deflection up to indicator 2 with two amplifier integrated package LC1 and LC2; If the electric current that induction produces is big; for protection microampere meter A pointer is not subjected to too big impulse force; the present invention can and meet a screw mandrel position adjuster W on the transport and placing device of second amplifier integrated package LC2 and back; when sensing big electric current; can regulate screw mandrel position adjuster W by the panel inching switch; with a plurality of transport and placing device short circuits of amplifier integrated package LC2 or back, protection indicator 2.Such circuit design provide enough power supplys can not only for indicator 2, also holding circuit equipment in due course, and the cost of product can be too not high yet, very simple of not only economy but also reasonable, and structure.
In addition, because indicator 2 has been to show the indicative function that the no current process is arranged in the whole current return, therefore indicator 2 can be enabled a miniature reometer or voltage table in the present invention, as long as according to its needle deflection situation, determine to have in the whole current return no current through getting final product, or determine the concealed wire surveyed position the most accurately according to the deflection situation of pointer maximum, certainly, indicator 2 also can replace with a toy trumpet or miniature bulb, if for no other reason than that adopt toy trumpet or miniature bulb to replace indicator 2, since when using if need be with the sound size, or the bright-dark degree of bulb judges the position of another one object, when the variation of sound or luminosity is big especially; Perhaps to judging did not influence, if but the variation of sound or luminosity is especially little, to just judge with the bright-dark degree of sound size or bulb and go wrong easily unavoidably, and fundamental purpose of the present invention also is to want to utilize a simple device to survey the accurate position of concealed wire by the mensuration that weak current is changed, thereby when construction or installation electric wire, avoid the position of charged concealed wire exactly, guarantee the safety of construction, therefore, the present invention preferably adopts a kind of pointer indicating device as indicator 2, as of the present invention be exactly a microampere meter.
With reference to Fig. 1, be parallel with two reverse diode D1 and D2 on the indicator 2 respectively.Because the present invention adopts a kind of pointer indicating device as indicator 2, electric current is not very big in the whole current return, the degree of deflection of indicator pointer is little, if pointer always ceaselessly waves in detection process, can influence the accuracy of detection unavoidably, therefore, in order to detect the accurate of concealed wire place more accurately, concrete position, the present invention is the diode D1 and the D2 of two reverse parallel connections in parallel on indicator 2, two diode connected in parallel D1 and D2 just can play the effect of eliminating self-excitation, make the beat of pointer of indicator 2 more stable, the detection performance of entire product is more stable, and the result is more accurate.
Claims (1)
1, hidden line detection instrument, comprise that panel is provided with inching switch, power switch, the shell of pilot lamp (20), the detecting head (1) that it is characterized in that belt coil (L) is installed in the shell (20), detecting head (1) receives the little magnetic field that produces around the charged concealed wire, coil (L) produces induction current through electromagnetic induction, induction current sends to the operational amplifier that is in series by two or more amplifier integrated packages through resistance (R1), be parallel with a screw mandrel regulator (W) on the amplifier integrated package (LC2), sensor current signal is after operational amplifier amplifies, behind current rectifying and wave filtering circuit (D) rectifying and wave-filtering, export to indicator (2) again, be parallel with the diode (D1) of two reverse parallel connections and (D2) on the indicator (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021342369A CN1180277C (en) | 2002-06-20 | 2002-06-20 | Hidden line detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021342369A CN1180277C (en) | 2002-06-20 | 2002-06-20 | Hidden line detection instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1395115A CN1395115A (en) | 2003-02-05 |
| CN1180277C true CN1180277C (en) | 2004-12-15 |
Family
ID=4747646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021342369A Expired - Fee Related CN1180277C (en) | 2002-06-20 | 2002-06-20 | Hidden line detection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180277C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8237534B2 (en) | 2007-05-10 | 2012-08-07 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Miniature transformers adapted for use in galvanic isolators and the like |
| US8258911B2 (en) | 2008-03-31 | 2012-09-04 | Avago Technologies ECBU IP (Singapor) Pte. Ltd. | Compact power transformer components, devices, systems and methods |
| US8385028B2 (en) | 2006-08-28 | 2013-02-26 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Galvanic isolator |
| US8385043B2 (en) | 2006-08-28 | 2013-02-26 | Avago Technologies ECBU IP (Singapoare) Pte. Ltd. | Galvanic isolator |
| US8427844B2 (en) | 2006-08-28 | 2013-04-23 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Widebody coil isolators |
| US8436709B2 (en) | 2006-08-28 | 2013-05-07 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Galvanic isolators and coil transducers |
| US9105391B2 (en) | 2006-08-28 | 2015-08-11 | Avago Technologies General Ip (Singapore) Pte. Ltd. | High voltage hold-off coil transducer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558638B (en) * | 2013-10-22 | 2016-08-17 | 江苏南瑞通驰自动化系统有限公司 | A kind of contactless charged concealed wire identification device |
| CN106154312A (en) * | 2016-08-26 | 2016-11-23 | 国家电网公司 | Not clear line alignment tester |
| CN106990442A (en) * | 2017-05-10 | 2017-07-28 | 上海海事大学 | A kind of portable hand-held detection means of electric current within the walls based on electromagnetic induction |
| CN109343128A (en) * | 2018-11-06 | 2019-02-15 | 栾松巍 | Wall embeds line sniffing image scanning instrument |
-
2002
- 2002-06-20 CN CNB021342369A patent/CN1180277C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8385028B2 (en) | 2006-08-28 | 2013-02-26 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Galvanic isolator |
| US8385043B2 (en) | 2006-08-28 | 2013-02-26 | Avago Technologies ECBU IP (Singapoare) Pte. Ltd. | Galvanic isolator |
| US8427844B2 (en) | 2006-08-28 | 2013-04-23 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Widebody coil isolators |
| US8436709B2 (en) | 2006-08-28 | 2013-05-07 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Galvanic isolators and coil transducers |
| US9019057B2 (en) | 2006-08-28 | 2015-04-28 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Galvanic isolators and coil transducers |
| US9105391B2 (en) | 2006-08-28 | 2015-08-11 | Avago Technologies General Ip (Singapore) Pte. Ltd. | High voltage hold-off coil transducer |
| US8237534B2 (en) | 2007-05-10 | 2012-08-07 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Miniature transformers adapted for use in galvanic isolators and the like |
| US8258911B2 (en) | 2008-03-31 | 2012-09-04 | Avago Technologies ECBU IP (Singapor) Pte. Ltd. | Compact power transformer components, devices, systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1395115A (en) | 2003-02-05 |
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