CN204389629U - Power circuit troubleshooting instrument in a kind of hand-held wall - Google Patents
Power circuit troubleshooting instrument in a kind of hand-held wall Download PDFInfo
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- CN204389629U CN204389629U CN201520115820.5U CN201520115820U CN204389629U CN 204389629 U CN204389629 U CN 204389629U CN 201520115820 U CN201520115820 U CN 201520115820U CN 204389629 U CN204389629 U CN 204389629U
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- 238000013024 troubleshooting Methods 0.000 title claims abstract description 24
- 230000005684 electric field Effects 0.000 claims abstract description 34
- 239000000523 sample Substances 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims abstract description 6
- 230000001939 inductive effect Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 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
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000006698 induction Effects 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
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- Locating Faults (AREA)
Abstract
The utility model discloses power circuit troubleshooting instrument in a kind of hand-held wall, it adopts 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 is connected with tuning frequency selection circuit respectively with weak electric field signal probe, what tuning frequency selection circuit, electric field signal received that amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit and loudspeaker be connected successively is arranged in host housing, and host housing arranges shift knob, charging socket, tuning knob, antenna insert port, inner screening hand touch metallic button and volume adjusting button.It is little that this searches instrument volume, is easy to carry, cheap, monnolithic case hand-held; Can see during use that level numerical value shows, also sub-audible sound size, improve the efficiency of the location of power circuit in onsite lookup wall and failture evacuation, safe and reliable, be suitable for various unexposed line and power place.
Description
Technical field
The utility model relates to electronic equipment field, be that one can be used for power circuit in AC system low pressure (1000 volts and following) power frequency 50 ± 10Hz wall and moves towards to locate and the device of various hidden failure point Search and Orientation, be specially power circuit troubleshooting instrument in a kind of hand-held wall.
Background technology
The place low-voltage supply line such as factory, ore deposit, enterprises and institutions, particularly family expenses, market, office generally all adopts in the wall of hidden and lays, although but the position of this mode circuit hiding attractive in appearance and trend are difficult to determine, when being more difficult to looking up the fault point during line failure in wall.Traditional looking up the fault, by experience, is taked the method for manually searching, can not directly be located, need electric wire to be sealed box and all take apart or untie branch's line one by one step by step, or damages wall, and work efficiency is too low; The line fault existed on the market searches device mainly for the power cable that high pressure is single, need two instruments with the use of, mostly expensively can not to popularize, and when using need circuit all to stop using, on circuit one end, low frequency signal is loaded with transmitter (source), find with receiver again, use complexity, carry inconvenience, and for power supply in wall because of contact wall electric leakages such as construction damage, power lead are aging, wet weathers, namely slight property earth fault is difficult to search and accurately puts in place.Thus searching this kind of fault is the work that electrician master worker has a headache most, and the utility model only needs a receiving instrument, and need not contact circuit, ensure that safety, practical, solves above-mentioned Problems existing.
Utility model content
The purpose of this utility model is to provide that a kind of application is wide, popular, volume is little, cost is low, be easy to carry, be applicable to low electromagnetic field environment, in the hand-held wall being more suitable for resident resident family place, power circuit troubleshooting instrument is to solve the problem proposed in background technology.Particularly the insulated hull that power circuit causes because of certain reason is within the walls damaged, plain conductor exposed part contact wall causes electric leakage protector to have a power failure by irregular immediate trip when forming slight electric leakage ground connection, when being difficult to failure judgement point, this search instrument can quick detection wall cortex electric leakage scope, the localization of faults.
For achieving the above object, the utility model provides following technical scheme:
Power circuit troubleshooting instrument in a kind of hand-held wall, comprise signal sensor and main frame, this troubleshooting instrument adopts built-in chargeable storage to power, described signal sensor is connected with main frame, described signal sensor is made up of highfield signal probe and weak electric field signal probe, highfield signal probe is all connected with tuning frequency selection circuit with weak electric field signal probe, described main frame comprises tuning frequency selection circuit, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit, loudspeaker and host housing, described tuning frequency selection circuit, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, what audio amplifier circuit and loudspeaker were connected successively is arranged in host housing, described host housing arranges shift knob, charging socket, tuning knob, antenna insert port, inner screening hand touches metallic button and volume adjusting button.
As further program of the utility model, described tuning frequency selection circuit is made up of controllable impedance, resistance and adjustable condenser.
As further program of the utility model, described receiving level display circuit is made up of separate elements and DS-dBB digital peak power-level detector integrated circuit modules or electromagnetic type OVU level indicator.
As further program of the utility model, described audio amplifier circuit is made up of Split type electric sub-element and LM operational amplifier integrated circuit modules.
As further program of the utility model, described highfield signal probe is inductance helical antenna, and inductance helical antenna is connected with tuning frequency selection circuit by antenna insert port.
As further program of the utility model, described weak electric field signal probe is made up of magnetic antenna in external annular radar and built-in bar magnet, inductive coil, and in annular radar, magnetic antenna is connected with inductive coil by rotary jack.
As further program of the utility model, described weak electric field signal probe arranges Demountable metallic radome.
As further program of the utility model, described host housing front end arranges metal screen layer.
As further program of the utility model, described loudspeaker outer setting loudspeaker mesh.
As further program of the utility model, described host housing arranges receiving level display screen.
Compared with prior art the beneficial effects of the utility model are: power circuit troubleshooting instrument in hand-held wall, and application is wide, and popular, volume is little, is easy to carry, cheap; Low in energy consumption without the need to emissive source, utilize by looking up the fault power supply alternating electromagnetic radiation electric microfield characteristic own, can realize convenient search low-voltage circuit various position of failure point and power circuit distribution situation within the walls, be specially adapted to search line leak current fault point position within the walls; For power supply in non-faulting wall, also can use the position and trend of originally searching power supply in instrument determination wall, indoors when finishing, wall punching, can be used for determining whether beat hole location has hiding power supply within the walls; Both by observing the numerical value display of receiving level display screen, loudspeaker listening size can be passed through again, both also use was not affected under having made the large environment of noise, improve onsite lookup power circuit location and the efficiency of failture evacuation within the walls, safe and reliable, be suitable for various unexposed line and power place.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is principle of work block diagram of the present utility model;
Fig. 3 is the utility model circuit working principle schematic;
Fig. 4 is electromagnetic type OVU level indicator circuit diagram.
In figure: 1, magnetic antenna in annular radar, 2, rotary jack, 3, inductive 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 selection circuit, 12, inner screening hand touches metallic button, 13, tuning knob, 14, electric field signal receives 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 utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As Figure 1-3, power circuit troubleshooting instrument in a kind of hand-held wall of the utility model, comprise signal sensor and main frame, this troubleshooting instrument adopts built-in chargeable storage 7 to power; Signal sensor is connected with main frame, and signal sensor is made up of highfield signal probe and weak electric field signal probe, and highfield signal probe is inductance helical antenna 9, and inductance helical antenna 9 is connected with tuning frequency selection circuit 11 by antenna insert port 10; Weak electric field signal probe is made up of magnetic antenna 1 in external annular radar and built-in bar magnet 4, inductive coil 3, and in annular radar, magnetic antenna 1 is connected with inductive coil 3 by rotary jack 2, and weak electric field signal probe arranges Demountable metallic radome; Highfield signal probe and weak electric field signal probe are all connected with tuning frequency selection circuit 11;
Main frame comprises tuning frequency selection circuit 11, electric field signal receives amplifying circuit 14, superregenerative detection circuit 16, receiving level display circuit 17, audio amplifier circuit 18, loudspeaker 19 and host housing 8, what the reception of tuning frequency selection circuit 11, electric field signal amplifying circuit 14, superregenerative detection circuit 16, receiving level display circuit 17, audio amplifier circuit 18 and loudspeaker 19 were connected successively is arranged in host housing 8, and tuning frequency selection circuit 11 is made up of controllable impedance, resistance and adjustable condenser; Receiving level display circuit is made up of separate elements and DS-dBB digital peak power-level detector integrated circuit modules; Audio amplifier circuit 18 is made up of Split type electric sub-element and LM operational amplifier integrated circuit modules; Host housing 8 arranges shift knob 5, charging socket 6, tuning knob 13, antenna insert port 10, inner screening hand touch metallic button 12 and volume adjusting button 15; Host housing 8 front end arranges metal screen layer, and loudspeaker outer setting loudspeaker mesh, host housing 8 arranges receiving level display screen.
As shown in Figure 4, power circuit troubleshooting instrument in a kind of hand-held wall, its receiving level display circuit is made up of separate elements and electromagnetic type OVU level indicator, compared with the DS-dBB digital peak power-level detector integrated circuit modules used, use electromagnetic type OVU level indicator, cost is cheaper, realizes the expansion of measuring range by outer meeting resistance, electric capacity.
Principle of work of the present utility model and using method: (1) weak electric field Signal reception principle: when power circuit is charged, its surrounding space can produce the electric microfield signal identical with its frequency of operation, this searches the electromagnetic field radiation characteristic that instrument utilizes power circuit self within the walls, the electric microfield signal of induction corresponding frequencies, is converted to the signal source of searching instrument through reception and realizes fault location function.By arranging the component parameters regulating and search instrument, can receive electric wire electric field frequency is nearby 50 ± 10Hz, namely without the electric microfield level signal of spatial dimension electromagnetic radiation within 20cm of metallic shield, for anti-interference, tuning frequency selection circuit adjustable frequency scope is 40Hz ~ 60Hz.(2) highfield Signal reception principle: this is searched instrument highfield signal probe and is applicable to around without the environment occasion of strong electromagnetic, adopts the unshielded Received signal strength of spiral inductance open type; Weak electric field signal probe built-in magnetic inductive coil, has in outside during strong jamming magnetic field and uses, and takes shielding location to improve antijamming capability.The corresponding frequencies electric field signal gathered near supply line delivers to tuning frequency selection circuit, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, due to signal collected intensity is more weak can not Direct driver loudspeaker, the audio amplifier circuit in main frame is utilized to amplify signal collected, export audio components to, realize frequency acoustic to export, user can ear listen corresponding frequencies sound and soon receiving level display screen export change size failure judgement point position, just can locate.
This is used to search instrument when carrying out troubleshooting, all consumers on faulty line should be disconnected, or stop using take off plug, if meet short trouble should first faulty line zero line be untied from power switch, then close a switch, utilize the 50Hz power frequency electric field signal that single live wire is intrinsic on the phenomenon line inspection road self of short dot diffusing electric field.Now this is searched instrument signal sensor near wall mains switch place, be 40 ~ 60Hz through manual knob tuned frequency, make the electric field signal of highfield signal probe or weak electric field signal probe detection 40 ~ 60Hz, search instrument by sending into tuning frequency selection circuit after gained signal, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit carry out signal transacting, through loudspeaker output audio.If draw line layout drawing, then directly to search along line alignment, search each about the 10cm in area covering line alignment both sides.The loudspeaker searching instrument during inswept regular link part of popping one's head in can send the audio frequency output of corresponding frequencies, sweep and be about absence of audio output after beyond 20cm to circuit both sides, or sound diminishes gradually.If looking up the fault, along the output of line alignment audio frequency, interruption or faint can occur, can judge circuit generation disconnection fault accordingly, trouble spot is positioned near audio disruption.Spread if loudspeaker audio exports, namely look into and to be greater than 25cm scope to circuit both sides to still have audio frequency to export and rounded radiation diffusion phenomena to sweeping during somewhere, and export normal along line layout positive dirction audio frequency, can be judged to be that power circuit and wall earth leakage phenomenon occur in vicinity.If search along live wire and occur exception not yet to end, then fault is at zero line place, and can singlely at power switch place be forwarded on power firestreak interface by circuit zero line, former circuit live wire is vacant not to be connect, and can search system zero-line failure according to the method described above after power turn-on switch.If do not know during looking up the fault, line layout moves towards, and can utilize originally to search instrument search type from power switch vicinity and search, and the direction having audio frequency to export is line layout trend, namely utilizes originally to search instrument and limit searching of line can move towards looking up the fault point position, limit.If when the more complicated place of strong electromagnetic environment (factory building as at transformer station, motor, reactor, transformer or more power frequency consumer) looking up the fault, metallic shield can be used to cover on weak electric field signal probe, pin inner screening hand to touch metallic button and search, with magnetic antenna trouble-shooting in the annular radar of weak electric field signal probe, otherwise use inductance helical antenna to search, listen corresponding frequencies sound according to ear and check that the change size of incoming level display translation judges that signal is strong and weak by receiving level display screen, finding target.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (10)
1. a power circuit troubleshooting instrument in hand-held wall, is characterized in that, comprise signal sensor and main frame, and this troubleshooting instrument adopts built-in chargeable storage to power, described signal sensor is connected with main frame, described signal sensor is made up of highfield signal probe and weak electric field signal probe, highfield signal probe is all connected with tuning frequency selection circuit with weak electric field signal probe, described main frame comprises tuning frequency selection circuit, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, audio amplifier circuit, loudspeaker and host housing, described tuning frequency selection circuit, electric field signal receives amplifying circuit, superregenerative detection circuit, receiving level display circuit, what audio amplifier circuit and loudspeaker were connected successively is arranged in host housing, described host housing arranges shift knob, charging socket, tuning knob, antenna insert port, inner screening hand touches metallic button and volume adjusting button.
2. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described tuning frequency selection circuit is made up of controllable impedance, resistance and adjustable condenser.
3. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described receiving level display circuit is made up of separate elements and DS-dBB digital peak power-level detector integrated circuit modules or electromagnetic type OVU level indicator.
4. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, is characterized in that, described audio amplifier circuit is made up of Split type electric sub-element and LM operational amplifier integrated circuit modules.
5. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described highfield signal probe is inductance helical antenna, and inductance helical antenna is connected with tuning frequency selection circuit by antenna insert port.
6. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described weak electric field signal probe is made up of magnetic antenna in external annular radar and built-in bar magnet, inductive coil, and in annular radar, magnetic antenna is connected with inductive coil by rotary jack.
7. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1 or 6, is characterized in that, described weak electric field signal probe arranges Demountable metallic radome.
8. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described host housing front end arranges metal screen layer.
9. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, is characterized in that, described loudspeaker outer setting loudspeaker mesh.
10. power circuit troubleshooting instrument in a kind of hand-held wall according to claim 1, it is characterized in that, described host housing arranges receiving level display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115820.5U CN204389629U (en) | 2015-02-11 | 2015-02-11 | Power circuit troubleshooting instrument in a kind of hand-held wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520115820.5U CN204389629U (en) | 2015-02-11 | 2015-02-11 | Power circuit troubleshooting instrument in a kind of hand-held wall |
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| Publication Number | Publication Date |
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| CN204389629U true CN204389629U (en) | 2015-06-10 |
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| CN201520115820.5U Expired - Fee Related CN204389629U (en) | 2015-02-11 | 2015-02-11 | Power circuit troubleshooting instrument in a kind of hand-held wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698339A (en) * | 2015-02-11 | 2015-06-10 | 国家电网公司 | Handheld fault finding instrument of power circuit in wall |
| 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 |
-
2015
- 2015-02-11 CN CN201520115820.5U patent/CN204389629U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698339A (en) * | 2015-02-11 | 2015-06-10 | 国家电网公司 | Handheld fault finding instrument of power circuit in wall |
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20180211 |