CN104698339B - A kind of hand-held wall interior power line fault searches instrument - Google Patents
A kind of hand-held wall interior power line fault searches instrument Download PDFInfo
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- CN104698339B CN104698339B CN201510087793.XA CN201510087793A CN104698339B CN 104698339 B CN104698339 B CN 104698339B CN 201510087793 A CN201510087793 A CN 201510087793A CN 104698339 B CN104698339 B CN 104698339B
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- 230000005684 electric field Effects 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 12
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- 230000005611 electricity Effects 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
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- 231100000869 headache Toxicity 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
Instrument is searched the invention discloses a kind of hand-held wall interior power line fault, it uses built-in chargeable storage to power；Signal sensor is connected with main frame, signal sensor is made up of highfield signal probe and weak electric field signal probe, highfield signal probe and weak electric field signal probe are connected with tuning frequency selection circuit respectively, what tuning frequency selection circuit, electric field signal reception amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit and loudspeaker were sequentially connected is arranged in host housing, and host housing sets shift knob, charging socket, tuning knob, antenna insert port, inner shield hand to touch metallic button and volume adjusting button.The lookup instrument small volume, is easy to carry, cheap, monnolithic case hand-held；It can see that level numerical value is shown when using, also sub-audible sound size, improve the efficiency of onsite lookup wall interior power line location and failture evacuation, it is safe and reliable, powered place suitable for various unexposed lines.
Description
Technical field
It is that a kind of can be used for AC system low pressure (1000 volts and less) power frequency the present invention relates to electronic equipment field
The positioning of 50 ± 10Hz wall interior powers line alignment and the device of various hidden failures point Search and Orientation, specially a kind of hand-held
Wall interior power line fault searches instrument.
Background technology
Factory, ore deposit, enterprises and institutions, the particularly place low-voltage supply line such as family expenses, market, office typically all use hidden
Wall in lay, this mode is although attractive in appearance but the position of circuit hiding and trend are difficult to determine, when in wall circuit send out
It is more difficult to search trouble point during raw failure.Traditional lookup failure leans on experience, takes the method manually searched, it is impossible to directly fixed
Position is, it is necessary to all take or untie one by one step by step electric wire jacket apart branch line, or damage wall, operating efficiency is too low；City
Line fault present on face searches device primarily directed to the single power cable of high pressure, it is necessary to two instruments are used cooperatively,
It is mostly expensive to popularize, and need all to disable circuit when using, loaded with transmitter (source) on circuit one end
Low frequency signal, then found with receiver, it is inconvenient to carry using complexity, and for wall interior power because construction damage, power line are old
The contact wall electric leakage such as change, wet weather, i.e., slight property earth fault is difficult to search accurately in place.Thus searching this kind of failure is
The work that electrician master worker most has a headache, and the present invention only needs to a receiving instrument, and without contacting circuit, it is ensured that safety, it is real
With solving above-mentioned problem.
The content of the invention
Wide, popular, small volume is applied it is an object of the invention to provide one kind, low cost is easy to carry, it is adaptable to low
Electromagnetic field environment, the hand-held wall interior power line fault for being more suitable for resident resident family place searches instrument to solve background technology
The problem of middle proposition.Especially for insulated hull damage of the power circuit within the walls caused by certain reason, the exposed portion of plain conductor
Tap, which is touched, causes electric leakage protector can irregular immediate trip power failure when wall forms slight electric leakage ground connection, it is difficult to failure judgement
Point in the case of, the lookup instrument can quick detection wall cortex electric leakage scope, the localization of faults.
To achieve the above object, the present invention provides following technical scheme：
A kind of hand-held wall interior power line fault searches instrument, including signal sensor and main frame, the trouble shoot instrument
Powered using built-in chargeable storage；The signal sensor is connected with main frame, and described signal sensor is believed by highfield
Number probe and weak electric field signal probe composition, highfield signal probe and weak electric field signal probe with tuning frequency selection circuit phase
Even, described main frame receives amplifying circuit, superregenerative detection circuit, receiving level including tuning frequency selection circuit, electric field signal and shown
Show circuit, audio amplifier circuit, loudspeaker and host housing, described tuning frequency selection circuit, electric field signal receive amplifying circuit,
What superregenerative detection circuit, receiving level display circuit, audio amplifier circuit and loudspeaker were sequentially connected is arranged on host housing
It is interior, described host housing set shift knob, charging socket, tuning knob, antenna insert port, inner shield hand touch metallic button and
Volume adjusting button.
As further scheme of the invention, the tuning frequency selection circuit is by controllable impedance, resistance and adjustable condenser group
Into.
As further scheme of the invention, described receiving level display circuit is by separate elements and DS-dBB numerals
Peak detection level integrated circuit modules or electromagnetic type OVU level indicators composition.
As further scheme of the invention, described audio amplifier circuit is by Split type electric subcomponent and LM operation amplifiers
Device integrated circuit modules are constituted.
As further scheme of the invention, described highfield signal probe is inductance helical antenna, inductance spiral day
Line is connected by antenna insert port with tuning frequency selection circuit.
As scheme of the invention further, the described weak electric field signal probe magnetic antenna in external annular radar
And built-in bar magnet, induction coil composition, magnetic antenna is connected by rotary jack with induction coil in annular radar.
As further scheme of the invention, the weak electric field signal probe sets Demountable metallic radome.
As further scheme of the invention, described host housing front end sets metal screen layer.
As further scheme of the invention, loudspeaker mesh is set outside the loudspeaker.
As further scheme of the invention, the host housing sets receiving level display screen.
Compared with prior art the beneficial effects of the invention are as follows：Hand-held wall interior power line fault searches instrument, application
Extensively, popular, small volume is easy to carry, cheap；It is low in energy consumption without emission source, handed in itself using by lookup trouble power
Electromagnetic radiation electric microfield characteristic is flowed, the convenient various position of failure point for searching low-voltage circuit can be achieved and power circuit is distributed within the walls
Situation, is particularly suitable for use in searching line leak current fault point position within the walls；For non-faulting wall interior power, this lookup instrument also can be used
Position and the trend of wall interior power are determined, indoors when finishing, wall punching, beats whether hole location has wall available for determination
Interior hiding power supply；Both it can be shown by observing the numerical value of receiving level display screen, again can be by loudspeaker listening size, both
Make to nor affect under the big environment of noise and use, improve onsite lookup power circuit positioning and the effect of failture evacuation within the walls
Rate, it is safe and reliable, powered place suitable for various unexposed lines.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the operation principle block diagram of the present invention；
Fig. 3 is circuit operation principle schematic diagram of the present invention；
Fig. 4 is electromagnetic type OVU level indicator circuit diagrams.
In figure：1st, magnetic antenna in annular radar, 2, rotary jack, 3, induction coil, 4, bar magnet, 5, shift knob, 6,
Charging socket, 7, chargeable storage, 8, host housing, 9, inductance helical antenna, 10, antenna insert port, 11, tuning frequency-selecting electricity
Road, 12, inner shield hand touch metallic button, 13, tuning knob, 14, electric field signal receive amplifying circuit, 15, volume adjusting button, 16,
Superregenerative detection circuit, 17, receiving level display circuit, 18, audio amplifier circuit, 19, loudspeaker.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As Figure 1-3, a kind of hand-held wall interior power line fault of the invention searches instrument, including signal sensor and
Main frame, the trouble shoot instrument is powered using built-in chargeable storage 7；Signal sensor is connected with main frame, signal sensor by
Highfield signal probe and weak electric field signal probe composition, highfield signal probe is inductance helical antenna 9, inductance helical antenna
9 are connected by antenna insert port 10 with tuning frequency selection circuit 11；Weak electric field signal probe magnetic day in external annular radar
Line 1 and built-in bar magnet 4, induction coil 3 are constituted, and magnetic antenna 1 is connected by rotary jack 2 with induction coil 3 in annular radar
Connect, weak electric field signal probe sets Demountable metallic radome；Highfield signal probe and weak electric field signal probe with tune
Humorous frequency selection circuit 11 is connected；
Main frame includes tuning frequency selection circuit 11, electric field signal and receives amplifying circuit 14, superregenerative detection circuit 16, electricity of collecting mail
Flat display circuit 17, audio amplifier circuit 18, loudspeaker 19 and host housing 8, tuning frequency selection circuit 11, electric field signal are received and put
Big circuit 14, superregenerative detection circuit 16, receiving level display circuit 17, audio amplifier circuit 18 and loudspeaker 19 are sequentially connected
Be arranged in host housing 8, tuning frequency selection circuit 11 be made up of controllable impedance, resistance and adjustable condenser；Receiving level shows
Show that circuit is made up of separate elements and DS-dBB digital peak power-level detector integrated circuit modules；Audio amplifier circuit 18 is by dividing
Constituted from formula electronic component and LM operational amplifier integrated circuits module；Host housing 8 set shift knob 5, charging socket 6,
Tuning knob 13, antenna insert port 10, inner shield hand touch metallic button 12 and volume adjusting button 15；The front end of host housing 8 sets gold
Belong to and loudspeaker mesh is set outside screen layer, loudspeaker, host housing 8 sets receiving level display screen.
As shown in figure 4, a kind of hand-held wall interior power line fault searches instrument, its receiving level display circuit is by separating
Formula element and electromagnetic type OVU level indicators composition, with the DS-dBB digital peak power-level detector integrated circuit modules phases used
Than using electromagnetic type OVU level indicators, cost is less expensive, and the expansion for measuring range can be realized by outer meeting resistance, electric capacity.
The operation principle and using method of the present invention：(1) light current field signal record principle：When power circuit is powered around it
Space can be produced utilizes the electromagnetic field spoke of power circuit itself within the walls with its working frequency identical electric microfield signal, the lookup instrument
Characteristic is penetrated, the received signal source for being converted to lookup instrument of electric microfield signal for sensing corresponding frequencies realizes fault location function.It is logical
The component parameters for setting regulation to search instrument are crossed, the electric field frequency of electric wire nearby can be received for 50 ± 10Hz, i.e., without metallic shield
The electric microfield level signal of spatial dimension electromagnetic radiation within 20cm, is anti-interference, tunes frequency selection circuit adjustable frequency scope
For 40Hz~60Hz.(2) forceful electric power field signal record principle：It is dry without strong electromagnetic that the lookup instrument highfield signal probe is applied to surrounding
The environment occasion disturbed, using the unshielded reception signal of spiral inductance open type；Weak electric field signal probe built-in magnetic induction coil,
Used when having strong jamming magnetic field in outside, take shielding positioning to improve antijamming capability.Gather the respective tones near supply line
Rate electric field signal delivers to tuning frequency selection circuit, electric field signal and receives amplifying circuit, superregenerative detection circuit, receiving level display electricity
Road, can not directly drive loudspeaker because signal collected intensity is weaker, will be gathered using the audio amplifier circuit in main frame
Signal is amplified, export to audio components, realize frequency acoustic export, user can ear listen corresponding frequencies sound and receive soon
Believe the change size failure judgement point position of level display screen output, just can position.
When carrying out trouble shoot using the lookup instrument, all electrical equipments on faulty line should be disconnected, or deactivation takes
Lower plug, if meet short trouble first should untie faulty line zero line at power switch, then closes a switch, utilizes single fire
Line is in the intrinsic 50Hz power frequency electric field signals in the phenomenon line inspection road itself of short dot diffusing electric field.Now the lookup instrument signal is visited
Device is surveyed at wall mains switch, is 40~60Hz through manual knob tuned frequency, makes highfield signal probe or weak electric field
Signal probe detects 40~60Hz electric field signal, searches instrument and connects feeding tuning frequency selection circuit, electric field signal after gained signal
Receive amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit and carry out signal transacting, through loudspeaker
Export audio.If desired line layout drawing is drawn, then is searched directed along line alignment, area covering line alignment two is searched
Each 10cm in side or so.Pop one's head in inswept regular link part when search instrument loudspeaker can send the audio output of corresponding frequencies, sweep
Tapered into after beyond to circuit both sides about 20cm without audio output, or sound.If searching failure along line alignment audio output
Can occur to interrupt or faint, can determine that disconnection fault occurs for circuit accordingly, trouble point is located near audio disruption.If speaker
Frequency output is spread, that is, is swept when looking into somewhere and be more than 25cm scopes to circuit both sides and still have audio output and rounded radiation to expand
Phenomenon is dissipated, and it is normal along line layout positive direction audio output, it can determine that occur power circuit for vicinity leaks with wall ground connection
Electrical phenomena.If being searched along live wire to end and not occurring exception yet, failure, can be single by circuit at power switch at zero line
Zero line is forwarded on power firestreak interface, and former circuit live wire is vacant not to be connect, and can be looked into according to the method described above after power turn-on switch
Look for system zero-line failure.If not knowing when searching failure, line layout is moved towards, and is searched using this lookup instrument since power switch vicinity
Cable-styled to search, the direction for having audio output is line layout trend, i.e., can be looked into using this lookup instrument when searching of line is moved towards
Look for position of failure point.If in the more complicated place of forceful electric power magnetic environment (such as in transformer station, motor, reactor, transformer or more
The factory building of power frequency electrical equipment) search failure when, usable metallic shield is covered on weak electric field signal probe, pins inner shield
Hand touches metallic button and searched, on the contrary to use inductance spiral with magnetic antenna trouble-shooting in the annular radar of weak electric field signal probe
Antenna is searched, and is listened corresponding frequencies sound according to ear and is checked that the change for receiving level display output is big by receiving level display screen
Small judgement signal strength, finds target.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (8)
1. a kind of hand-held wall interior power line fault searches instrument, it is characterised in that including signal sensor and main frame, the event
Barrier is searched instrument and powered using built-in chargeable storage；The signal sensor is connected with main frame, described signal sensor by
Highfield signal probe and weak electric field signal probe composition, highfield signal probe and weak electric field signal probe are with tuning frequency-selecting
Circuit is connected, and described main frame includes tuning frequency selection circuit, electric field signal and receives amplifying circuit, superregenerative detection circuit, collects mail
Level displaing circuit, audio amplifier circuit, loudspeaker and host housing, described tuning frequency selection circuit, electric field signal are received and put
What big circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit and loudspeaker were sequentially connected is arranged on master
In machine shell, described host housing sets shift knob, charging socket, tuning knob, antenna insert port, inner shield hand to touch gold
Belong to button and volume adjusting button；Described highfield signal probe is inductance helical antenna, and inductance helical antenna is inserted by antenna
Mouthful it is connected with tuning frequency selection circuit, described weak electric field signal probe magnetic antenna and built-in magnetic in external annular radar
Magnetic antenna is connected by rotary jack with induction coil in rod, induction coil composition, annular radar.
2. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that the tune
Humorous frequency selection circuit is made up of controllable impedance, resistance and adjustable condenser.
3. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that described
Receiving level display circuit is by separate elements and DS-dBB digital peak power-level detector integrated circuit modules or electromagnetic type OVU electricity
Flat indicator composition.
4. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that described
Audio amplifier circuit is made up of Split type electric subcomponent and LM operational amplifier integrated circuit modules.
5. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that described weak
Electric field signal probe sets Demountable metallic radome.
6. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that described
Host housing front end sets metal screen layer.
7. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that described to raise
Loudspeaker mesh is set outside sound device.
8. a kind of hand-held wall interior power line fault according to claim 1 searches instrument, it is characterised in that the master
Machine shell sets receiving level display screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087793.XA CN104698339B (en) | 2015-02-11 | 2015-02-11 | A kind of hand-held wall interior power line fault searches instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510087793.XA CN104698339B (en) | 2015-02-11 | 2015-02-11 | A kind of hand-held wall interior power line fault searches instrument |
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| Publication Number | Publication Date |
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| CN104698339A CN104698339A (en) | 2015-06-10 |
| CN104698339B true CN104698339B (en) | 2017-11-03 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606883A (en) * | 2015-12-21 | 2016-05-25 | 南宁学院 | Weak current detection system based on FFT filtering |
| CN106597553B (en) * | 2017-01-23 | 2019-04-16 | 金华马卡科技有限公司 | A kind of covert features positioning device and localization method |
| CN108387815B (en) * | 2018-01-15 | 2020-08-14 | 大连理工大学 | Testing method using special wall line analyzer |
| CN108535584A (en) * | 2018-04-12 | 2018-09-14 | 天津港设施管理服务公司 | Distribution box wireline inspection equipment |
| CN109374993A (en) * | 2018-09-28 | 2019-02-22 | 广州博昊信息科技有限公司 | A kind of power frequency electric field detection device |
| CN113238122A (en) * | 2021-07-01 | 2021-08-10 | 哈尔滨理工大学 | Fault detection device based on low-voltage cable electric field distribution |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0024183A1 (en) * | 1979-08-18 | 1981-02-25 | Geodate Limited | A method of detecting faults in the electrically conductive sheath of an electric cable |
| CN2098040U (en) * | 1991-07-22 | 1992-03-04 | 冯占国 | High-tension line ground fault remote-detector |
| CN2118995U (en) * | 1992-04-30 | 1992-10-14 | 赵义泰 | Detector for the fault of broadcast buried cable |
| CN2230041Y (en) * | 1995-04-18 | 1996-06-26 | 郭晓天 | Instrument for locating fault in cable under earth or in hidden place |
| CN1423486A (en) * | 2002-12-23 | 2003-06-11 | 乐金电子（沈阳）有限公司 | Automatic gain control device for digital television receiver and method thereof |
| CN201611374U (en) * | 2010-01-19 | 2010-10-20 | 郑光明 | Break line detecting instrument |
| CN204389629U (en) * | 2015-02-11 | 2015-06-10 | 国家电网公司 | Power circuit troubleshooting instrument in a kind of hand-held wall |
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Inventor after: Li Tiefu Inventor after: Li Dongjiang Inventor after: Deng Tianyi Inventor after: Long Dunshun Inventor after: Fang Baolei Inventor after: Jia Yinfei Inventor after: Li Yefeng Inventor after: Qin He Inventor after: Li Weidong Inventor after: Wang Ren Inventor after: Wang Gan Inventor after: Li Yuandong Inventor after: Zhang Cong Inventor after: Lin Xiangbin Inventor after: Wang Chao Inventor after: Chen Xiaobei Inventor after: Liu Jian Inventor after: Liu Yujiao Inventor after: Xu Qinchao Inventor after: Zhang Xu Inventor after: Zhang Qi Inventor after: Wang Long Inventor after: Zhang Song Inventor after: Wang Yao Inventor before: Li Tiefu Inventor before: Fang Baolei Inventor before: Lian Lilan Inventor before: Zhang Qi Inventor before: Wang Gan Inventor before: Liu Yujiao Inventor before: Xu Qinchao Inventor before: Li Yuandong Inventor before: Jia Yinfei Inventor before: Li Yefeng Inventor before: Yuan Qiang Inventor before: Zhang Xu Inventor before: Yuan Zhen |
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Effective date of registration: 20170926 Address after: 277800 Zaozhuang New District, Shandong, the Yellow River Road, No. 999 Applicant after: Zaozhuang Power Supply Company of State Grid Shandong Electric Power Company Applicant after: State Grid Corporation of China Applicant after: Shandong Luneng Liyuan Electric Equipment Co., Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: Zaozhuang Power Supply Company of State Grid Shandong Electric Power Company |
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