CN103558638B - A kind of contactless charged concealed wire identification device - Google Patents
A kind of contactless charged concealed wire identification device Download PDFInfo
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- CN103558638B CN103558638B CN201310500137.9A CN201310500137A CN103558638B CN 103558638 B CN103558638 B CN 103558638B CN 201310500137 A CN201310500137 A CN 201310500137A CN 103558638 B CN103558638 B CN 103558638B
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Abstract
The invention discloses a kind of contactless charged concealed wire identification device, it includes AC field probe unit, signal processing unit, concealed wire location identification unit, AC field probe unit is plane configuration structure, i.e. in one piece of plane, place several electric field detecting unit by array way, each electric field detecting unit and a signal condition unit are connected, signal processing unit receives the output signal of described signal condition unit and planar array is carried out intermittent scanning, and do Coherent processing with known open-wire line signal, judge the position of charged exchange wire accordingly, concealed wire location identification unit receives the positional information of signal processing unit and shows its positional information accordingly.The present invention uses array-type sensor to realize the measurement to charged concealed wire, processes signal coherence simultaneously, solves the outside electromagnetic interference impact on measurement result；Planar array type display unit can accurately show position and the trend of charged concealed wire simultaneously, brings safety guarantee for power construction process.
Description
Technical field
The present invention relates to one and be applied to charged concealed wire identification device, refer specifically to one and be capable of identify that and bury in other
The identification device of live electric cable in nonmetal screen body.
Background technology
The mode now measured for concealed wire is more, mainly has following two kinds: 1 metal detection method: visit according to metal
The metering system surveying principle is the most perfect, can not directly confirm that cable is the most charged in test process.2 note ripples
Method: use signal circuit principle to inject test signal in cable is strong according to the signal detected in other positions
Degree judges whether this position has cable, and this type of method has indirect coupling and straight juncture, and direct-coupling needs power-off
Detection, due to the impact of signal radiation scope, generally cannot directly judge live electric cable position and trend.
The direct measuring method of live electric cable is commonly used to the measurement of high-pressure electrified conductor, directly surveying of low-voltage electric body
Measure the most rare.Position and the trend of not outage detection live electric cable is typically encountered in actual Phase of Electric Power Projects,
Note ripple method, the use of metal detection method are restricted.
Summary of the invention
It is an object of the invention to, for note ripple method, the deficiency of metal detection method, develop a kind of novel non-contact
Charged concealed wire identification device.
To achieve these goals, the technical solution used in the present invention is: is applied to contactless charged concealed wire and knows
Other device is mainly made up of following components: AC field probe unit, signal processing unit, concealed wire position
Recognition unit etc..AC field probe unit is plane configuration structure, i.e. puts by array way in one piece of plane
Put several electric field detecting unit, each electric field detecting unit and a signal condition unit to be connected, signal transacting
The output signal of unit receiving signal reason unit carries out intermittent scanning to planar array, and with known open-wire line signal
Doing Coherent processing, judge the position of charged exchange wire accordingly, concealed wire location identification unit receives signal transacting list
First positional information also shows its positional information accordingly.
Above-mentioned contactless charged concealed wire identification device, it is further characterized by it and takes plane configuration to sense
Device, carries out Coherent processing by measuring signal with the open-wire line voltage signal tested, obtains phase relation therebetween
Number, judges measured relation between signal and power voltage line signal such that it is able to effective, gets rid of extraneous ring
The interference in border.
Above-mentioned contactless charged concealed wire identification device, it is further characterized by it and takes plane configuration to show,
I.e. at each electric field detecting unit back side equipped with a LED, change according to the strong and weak brightness of electric field, make sight
Examine the position being easy to judge live wire.
Above-mentioned contactless charged concealed wire identification device, it is further characterized by its plane configuration sensor and adopts
Taking multilayered printed technique and form a pellicular cascade on matrix, this capacitive stack electric field change to external world is sensitive.
Above-mentioned contactless charged concealed wire identification device, it is further characterized by because using plane configuration sensing
Device and light-emitting diode display, carry out periodic scan simultaneously and carry out phase with known open-wire line voltage signal array signal
Dry-cure, obtains coefficient correlation therebetween, specifies position and the trend of tested cable so that it is can be two
Determine the position of live electric cable on individual direction, i.e. possess 2D detection function.
The present invention uses array-type sensor to achieve the measurement to charged concealed wire, owing to using array sensing
Measure signal, signal coherence is processed simultaneously, solve the outside electromagnetic interference impact on measurement result.Simultaneously
Planar array type display unit can accurately show position and the trend of charged concealed wire, and this will carry during power construction
Carry out bigger safety guarantee.
Accompanying drawing explanation
Fig. 1 is the product knot signal composition of the present invention.
Fig. 2 is planar array type sensor and the display device structure figure (front) of the present invention.
Fig. 3 is planar array type sensor and the display device structure figure (back side) of the present invention.
Fig. 4 is the principle of products block diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail as follows:
One typical contactless charged concealed wire identification device by AC field probe unit, signal processing unit,
Concealed wire position display unit etc., power supply form.This device can be to not being hidden in body of wall, isolated pipe, concrete etc.
Live electric cable in nonmetal shielding medium carries out position, moves towards to identify.Meet in power construction and safety is wanted
Ask.
[embodiment]
Seeing Fig. 1, the example of the present invention is known by AC field probe unit, signal processing unit, concealed wire position
Other unit etc., power supply form.Wherein AC field probe unit is a kind of planar array type sensor, a sensing
Sensing the distribution size of AC field in plane, the vector size of electric field is directly proportional to the induced voltage at electric capacity two ends,
Planar array type sensing unit also can reduce the external electrical field impact on measuring；For reducing transmission to electric capacity both end voltage
Affect and have a signal conditioning circuit to be exported by signal Low ESR behind at each probe unit.Signal transacting list
The induced signal of unit's scanning AC field detection, carries out phase through A/D sample circuit, signal processor to signal
Dry-cure, parses the component of the power supply homophase being wherein connected with device, is simultaneously emitted by instruction and lights corresponding
LED.Power subsystem mainly provides the working power of each part, obtains electricity from power supply sampling simultaneously
The sampled signal in source.
This is the planar array type sensor assembly and display device structure figure invented to see Fig. 2, Fig. 3, and sensor is with aobvious
Showing that device is distributed in the both sides of plate, sensor is made up of pcb board, electric field induction device, LED, AC field sense
Answering device, LED to use the encapsulation of SMT technique, reduce the installation dimension of device, electric field induction device is for taking to print
Technique forms a pellicular cascade on matrix, and lamination forms a capacitor, when having an electricity along the normal direction of matrix
Produce induced voltage when field passes at lamination two ends, voltage swing is directly proportional to the size of electric field intensity.Signal is adjusted
Reason circuit is placed on the same face with LED.Take different because of the position of charged concealed wire and the judgement precision of trend
Array, usually 100*100, i.e. level and vertical direction have 100 electric field induction devices and LED.
See the theory diagram that Fig. 4 is the present invention.Power subsystem provides working power for whole device, obtains simultaneously
Take the sampled signal of surveyed power supply；Signal conditioning circuit realizes impedance transformation, anti-aliasing, amplitude limit function, signal
Process the circuit realiration scanning sample to sensor assembly output signal, read the sampled signal of power subsystem simultaneously,
Both are carried out Coherent processing, obtain wherein with the component of the sampled signal homophase of power subsystem, expose simultaneously
Corresponding LED.
Although the present invention is described by being embodied as example and accompanying drawing, but implement example and accompanying drawing not for limiting
Determine the present invention.Those skilled in the art can make various deformation and improvement in the scope of the present invention, its
Same within protection scope of the present invention.Therefore protection scope of the present invention should be with claims hereof
Identical or the equivalent that protection is defined is in the range of standard.
Claims (1)
1. a contactless charged concealed wire identification device, it is characterised in that: include AC field probe unit,
Signal processing unit, concealed wire location identification unit and power subsystem, described AC field probe unit is planar array
Formula structure, i.e. places several electric field detecting unit, each electric field detecting list by array way in one piece of plane
Unit is connected with a signal condition unit, and described signal processing unit receives the output letter of described signal condition unit
Number and planar array is carried out intermittent scanning, do Coherent processing with known open-wire line signal simultaneously, judge charged accordingly
The position of exchange wire；It is embodied in, the induced signal of described signal processing unit scanning AC field detection,
Signal is carried out Coherent processing, parses the component of the power supply homophase being wherein connected with device, be simultaneously emitted by referring to
Corresponding LED is lighted in order, and described concealed wire location identification unit receives the position letter of described signal processing unit
Breath also shows that its positional information, described power subsystem mainly provide the working power of each part accordingly, with
Time from power supply sampling obtain power supply sampled signal；
Described contactless charged concealed wire identification device use plane configuration sensor, by measurement signal with surveyed
The open-wire line voltage signal of examination carries out Coherent processing, obtains coefficient correlation therebetween, thus effectively judges institute
Measure the relation between signal and power voltage line signal, get rid of the interference of external environment；
Multilayered printed technique taked by described plane configuration sensor, forms a pellicular cascade, institute on matrix
State pellicular cascade electric field change to external world sensitive；
Described contactless charged concealed wire identification device uses plane configuration to show, at each electric field detecting list
The unit back side, equipped with a LED, changes according to the strong and weak brightness of electric field, makes observer be easy to judge live wire
Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500137.9A CN103558638B (en) | 2013-10-22 | 2013-10-22 | A kind of contactless charged concealed wire identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310500137.9A CN103558638B (en) | 2013-10-22 | 2013-10-22 | A kind of contactless charged concealed wire identification device |
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| Publication Number | Publication Date |
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| CN103558638A CN103558638A (en) | 2014-02-05 |
| CN103558638B true CN103558638B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310500137.9A Active CN103558638B (en) | 2013-10-22 | 2013-10-22 | A kind of contactless charged concealed wire identification device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104216029B (en) * | 2014-07-30 | 2017-04-05 | 河南科技大学 | A kind of concealed wire detector based on temperature effects |
| CN110398779B (en) * | 2019-07-12 | 2021-04-20 | 四川建筑职业技术学院 | Concealed wire detection device and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395115A (en) * | 2002-06-20 | 2003-02-05 | 钟伟章 | Hidden line detection instrument |
| CN2586970Y (en) * | 2002-11-15 | 2003-11-19 | 黄瑞华 | Buried wire detecting apparatus |
| CN203117341U (en) * | 2013-01-18 | 2013-08-07 | 李伟哲 | An electronic wire finding invisible automatic tracing pen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56110069A (en) * | 1980-02-04 | 1981-09-01 | Kokusai Denshin Denwa Co Ltd <Kdd> | Cable tracking method |
| JP2757058B2 (en) * | 1990-03-08 | 1998-05-25 | 株式会社小松製作所 | Underground excavator relative position detector |
| WO2001009635A2 (en) * | 1999-08-02 | 2001-02-08 | Zircon Corporation | Apparatus having a single sensor for locating a concealed conductor energized by an alternating electric field |
-
2013
- 2013-10-22 CN CN201310500137.9A patent/CN103558638B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1395115A (en) * | 2002-06-20 | 2003-02-05 | 钟伟章 | Hidden line detection instrument |
| CN2586970Y (en) * | 2002-11-15 | 2003-11-19 | 黄瑞华 | Buried wire detecting apparatus |
| CN203117341U (en) * | 2013-01-18 | 2013-08-07 | 李伟哲 | An electronic wire finding invisible automatic tracing pen |
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| CN103558638A (en) | 2014-02-05 |
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Address after: 210031 Nanjing high tech Zone, Liuzhou, North Road, No. 22, No. Applicant after: JIANGSU NARI TONGCHI AUTOMATION SYSTEM CO., LTD. Address before: 210031 Nanjing high tech Development Zone, Liuzhou, North Road, No. 22, No. Applicant before: Jiangsu Tongchi Automatization System Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: JIANGSU TONGCHI AUTOMATIZATION SYSTEM CO., LTD. TO: JIANGSU NANRUI TONGCHI AUTOMATION SYSTEM CO., LTD. |
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Effective date of registration: 20170209 Address after: 210031 Nanjing high tech Zone, Liuzhou, North Road, No. 22, No. Patentee after: STATE GRID NANRUI SANNENG ELECTRIC POWER INSTRUMENT (NANJING) CO., LTD. Address before: 210031 Nanjing high tech Zone, Liuzhou, North Road, No. 22, No. Patentee before: JIANGSU NARI TONGCHI AUTOMATION SYSTEM CO., LTD. |
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