CN204649868U - Low-voltage electric cable pair verifies instrument - Google Patents
Low-voltage electric cable pair verifies instrument Download PDFInfo
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- CN204649868U CN204649868U CN201520344317.7U CN201520344317U CN204649868U CN 204649868 U CN204649868 U CN 204649868U CN 201520344317 U CN201520344317 U CN 201520344317U CN 204649868 U CN204649868 U CN 204649868U
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Abstract
The utility model provides a kind of low-voltage electric cable pair to verify instrument, comprise can intercom mutually variable current signal source, many jaws Intelligent Recognition terminal and a plurality of current clamp; Described variable current signal source comprises system control unit, cable intrinsic signal detecting unit, disturbing signal generation unit, voltage automatic identification unit, interactive unit and system power supply; Described many jaws Intelligent Recognition terminal comprises control system module, current detection module, frequency detection module, power module and mutual alarm module; Described current clamp connects current detection module, the frequency detection module of many jaws Intelligent Recognition terminal respectively.The utility model to recognition success rate 100%, is applicable to the live electric cable identification of long distance and not charged identification to live electric cable line, and it is wide to be suitable for voltage range, and alleviates the workload of maintainer, greatly increases work efficiency.
Description
Technical field
The utility model relates to the charged service equipment of a kind of cable, and particularly a kind of low-voltage electric cable pair verifies instrument.
Background technology
Cables numerous in communications equipment room is deep-rooted, like endless " labyrinth ".In room management work, often can run into the upper and lower terminal of live electric cable cannot confirm, investigation cable, owing to lacking effective tool, needs time and the manpower of at substantial.Often there is the machine room cutover accident because cable investigation mistake causes.So machine room is real when carrying out the work such as cable cutover, adjustment of load, asset management, newly added equipment, malfunction elimination, the thing of the most headache of staff is exactly the two ends of how accurately to check cable.If cable two terminal pair checks mistake, when carrying out charging construction, serious accident will be caused.
For the problems referred to above, the following two kinds of modes of main employing determine that cable pair is verified at present both at home and abroad.
Method one: signal coupling method
Adopting signal coupling mode, adopted current clamp coupled signal by the one end of searching, then determining the other one end of cable by detecting coupled signal.The method has problems:
1, coupled signal is less than normal, if cable is longer, to below just more and more difficulty signal detected, very large on final judgement impact;
2, coupled signal not only only can exist in the cable be coupled, and to be also crosstalked on other lines (particularly line) side by side, so execute-in-place gets up, the possibility of erroneous judgement is very large;
3, coupling scheme, also needing on-the-spot cable to form loop, is exactly that ground connection wanted by the iron of fine quality, high to environmental requirement.
Method two: disturbing signal method
Disturbing signal source in lower end (load end) parallel connection of cable, produces the signal of fixed frequency, and this signal only can produce on the cable connecting load.Adopt in the upper end of cable Hall components and parts to identify, simultaneously in conjunction with synchronizing signal, show recognition result by acousto-optic.As 2013.11.20 announces, publication No. is that the Chinese utility model of CN 103399240A discloses a kind of uninterrupted power supply cable sorting device and method, be disturbing signal method, it comprises the following steps: arrange main control equipment at the first end of electrified cable, arranges slave equipment at the second end of electrified cable; Main control equipment sends slave equipment to after default current disturbing order is converted to current disturbing order wireless signal, and current disturbing order comprises current variation value, and current variation value comprises curent change frequency values and curent change range value; Slave equipment received current disturbance order wireless signal, and produce according to current disturbing order the current disturbing in electrified cable according to the current disturbing order wireless signal received; Main control equipment gathers the current variation value on electrified cable, and the current variation value of collection is compared with the power frequency value in the current disturbing order of acquisition, when current variation value in the current disturbing order comparing current variation value and the acquisition collected is identical, export the information that default upper and lower terminal is collinear.
This disturbing signal method Problems existing:
1, the disturbing signal of fixed frequency can only be produced all tests, and the cable be identified very likely also exists the ripple the same with disturbing signal or harmonic wave, so will greatly affect identification accuracy;
2, decipherment distance is short, although can increase synchronizing signal repeater, long distance can make disturbing signal more and more weak, identifies more and more difficult;
3, need synchronism detection, operation very not easily;
4, the Hall current pincers of identification signal only have a kind of specifications and models, cannot be suitable for the identification of various wire diameter, different loads current strap electrical cables;
5, cannot identify abnormal voltage system, such as AC system, voltage low pressure 220V, only has the identification under the abnormal voltages such as 180V.
Utility model content
The technical problems to be solved in the utility model, be to provide a kind of low-voltage electric cable pair to verify instrument, recognition success rate is high, can reach 100%, be applicable to the live electric cable identification of long distance and not charged identification, and it is wide to be suitable for voltage range.
The utility model is achieved in that a kind of low-voltage electric cable pair verifies instrument, comprise can intercom mutually variable current signal source, many jaws Intelligent Recognition terminal and a plurality of current clamp; Described variable current signal source comprises system control unit, cable intrinsic signal detecting unit, disturbing signal generation unit, voltage automatic identification unit, interactive unit and system power supply; Described cable intrinsic signal detecting unit, disturbing signal generation unit and the equal connected system control module of interactive unit; Described system power supply is connected with voltage automatic identification unit, and described disturbing signal generation unit and voltage automatic identification unit are connected a disturbing signal decanting point of cable to be identified respectively; Described many jaws Intelligent Recognition terminal comprises control system module, current detection module, frequency detection module, power module and mutual alarm module; Described current detection module, frequency detection module, power module and mutual alarm module are all connected to described control system module; Described current clamp connects the cable intrinsic signal detecting unit in current detection module in described many jaws Intelligent Recognition terminal, frequency detection module and described variable current signal source respectively.
Further, described variable current signal source also comprises wireless communication unit, this wireless communication unit connected system control module; Described many jaws Intelligent Recognition terminal also comprises wireless communication module, described wireless communication module connection control system module.
Further, the connection between the current detection module in described current clamp and described many jaws Intelligent Recognition terminal, frequency detection module is wireless connections.
Further, described interactive unit comprises LCD display unit and key-press input unit, this LCD display unit and the equal connected system control module of key-press input unit.
Further, described mutual alarm module comprises LCD display module, KEY module and hummer, the equal connection control system module of this LCD display module, KEY module and hummer.
Further, described power module comprises charging module, lithium battery and protection circuit, and described lithium battery connects charging module and control system respectively, and described protection circuit and charging module be connection control system module also.Wherein, described protection circuit comprises fuse, equalizing voltage testing circuit, current sense resistor, protection IC and circuit, MOSFET discharge protection circuit and MOSFET charge protector; Described lithium battery connects fuse, equalizing voltage testing circuit and current sense resistor respectively; Described current sense resistor, MOSFET discharge protection circuit, MOSFET charge protector connect successively; Described equalizing voltage testing circuit, MOSFET discharge protection circuit and MOSFET charge protector all connect protection IC and circuit; Described fuse, protection IC and circuit, MOSFET charge protector all connect described control system module.
The utility model tool has the following advantages:
1, live electric cable line is to recognition success rate 100%, during to facilitate work such as carrying out cable cutover, adjustment of load, asset management, newly added equipment, malfunction elimination, can avoid producing great security incident;
2, alleviate the workload of maintainer, greatly increase work efficiency.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is the one-piece construction schematic diagram that the utility model verifies instrument.
Fig. 2 is the schematic block circuit diagram that the utility model verifies variable current signal source in instrument.
Fig. 3 is the schematic block circuit diagram that the utility model verifies many jaws Intelligent Recognition terminal in instrument.
Fig. 4 is the circuit theory schematic diagram that the utility model verifies many jaws Intelligent Recognition terminal supplying power module in instrument.
Fig. 5 is the using state connection diagram that the utility model verifies instrument.
Embodiment
As shown in Figure 1, low-voltage electric cable pair of the present utility model verifies instrument, comprises energy variable current signal source 1, many jaws Intelligent Recognition terminal 2 and a plurality of current clamp 3; Can intercom mutually between described variable current signal source 1, many jaws Intelligent Recognition terminal 2, a plurality of current clamp 3.
As shown in Figure 2, described variable current signal source 1 comprises system control unit 11, cable intrinsic signal detecting unit 12, disturbing signal generation unit 13, voltage automatic identification unit 14, interactive unit 15 and system power supply 16; Described cable intrinsic signal detecting unit 12, disturbing signal generation unit 13 and interactive unit 15 be connected system control module 11 all, and disturbing signal generation unit 13 is also connected to the disturbing signal decanting point A1 of cable A to be identified; Described system power supply 16 is connected to the disturbing signal decanting point A2 being surveyed cable by another by voltage automatic identification unit 14.
Described system control unit 11 is for controlling the work of each subelement in variable current signal source 1;
Described cable intrinsic signal detecting unit 12 is for detecting the natural frequency signal of cable:
Described disturbing signal generation unit 13 is for generation of the current signal of different frequency and different amplitude;
Described voltage automatic identification unit 14 is for identifying the electric pressure of accessed cable;
Described interactive unit 15 comprises LCD display unit 151 and key-press input unit 152 further, this LCD display unit 151 and key-press input unit 152 all connected system control modules 11; Wherein LCD display unit 151 is for showing the information of disturbing signal: key-press input unit 152 is for input disturbance signal frequency and amplitude;
Described system power supply 16 is powered for giving the work of each subelement in variable current signal source 1;
As shown in Figure 3, described many jaws Intelligent Recognition terminal 2 comprises control system module 21, current detection module 22, frequency detection module 23, power module 24 and mutual alarm module 25; Described current detection module 22, frequency detection module 23, power module 24 and mutual alarm module 25 are all connected to described control system module 21.
Described control system module 21 is for controlling each subelement module work;
Described current detection module 22 is for original current amplitude and disturbing signal amplitude in the tested cable that detects current clamp 3 and clamp;
Described frequency detection module 23 is for original power frequency and disturbing signal frequency in the tested cable that detects current clamp 3 and clamp;
Described power module 24 comprises charging module 241, lithium battery 242 and protection circuit 243 further, and described lithium battery 242 connects charging module 241 and control system 21 respectively, described protection circuit 243 and charging module 241 also connection control system module 21.Described charging module 241 is powered for giving described lithium battery 242, and lithium battery 242 is powered for giving whole many jaws Intelligent Recognition terminal 2, and protection circuit 243 is for many jaws Intelligent Recognition terminal 2 over-current over-voltage protection.
Wherein as shown in Figure 4, described protection circuit 243 comprises fuse, equalizing voltage testing circuit, current sense resistor, protection IC and circuit, MOSFET discharge protection circuit and MOSFET charge protector; Described lithium battery connects fuse, equalizing voltage testing circuit and current sense resistor respectively; Described current sense resistor, MOSFET discharge protection circuit, MOSFET charge protector connect successively; Described equalizing voltage testing circuit, MOSFET discharge protection circuit and MOSFET charge protector all connect protection IC and circuit; Described fuse, protection IC and circuit, MOSFET charge protector all connect described control system module.
Again as shown in Figure 3, described mutual alarm module 25 comprises LCD display module 251, KEY module 252 and hummer 253 further, and this LCD display module 251, KEY module 252 and hummer 253 be connection control system module 21 all.Wherein, described LCD display module 251 is for information displaying when operation interface and work; Described KEY module 252 is selected and parameters input for function; Described hummer 253 is for auditory tone cues test result.
Described current clamp 3 connects current detection module 22 in described many jaws Intelligent Recognition terminal 2, frequency detection module 23 respectively and connects the cable intrinsic signal detecting unit 12 in described variable current signal source 1, wherein, be good when this connection is wireless connections, connect as WIFI can be adopted, be convenient to wireless near field communication, not by space constraint.
Described variable current signal source 1 also comprises wireless communication unit 17, this wireless communication unit 17 connected system control module 11; Described many jaws Intelligent Recognition terminal 2 also comprises wireless communication module 26, described wireless communication module 26 connection control system module 21.Said variable current signal source 1 can facilitate telecommunication by radio communication with described many jaws Intelligent Recognition terminal 2.
As shown in Figures 1 to 5, the utility model detect operation steps and principle of work:
The first step, first confirms the intrinsic signal of target cable:
1, a current clamp 3 is vised cable to be identified, open described variable current signal source 1 and apply signal;
2, the frequency of intrinsic signal in cable tested in current clamp 3 and amplitude can be informed variable current signal source 1 by described many jaws Intelligent Recognition terminal 2, variable current signal source 1 can produce the disturbing signal that is different from this intrinsic signal, also can by the artificial disturbing signal directly inputting a fixed amplitude, fixed frequency.
Second step, finds target cable:
1. variable current signal source 1 is opened, automatically frequency and the amplitude of the signal that system carries is avoided, this signal possesses uniqueness, only can produce on the cable be identified, variable current signal source 1 adopts Heising modulation signal simultaneously, can ensure that more than 10 kilometers current perturbation signals are unattenuated, so applicable long-distance cable identification;
2. cable Injection Signal to be identified is given in variable current signal source 1;
3. by the current detection module 22 of many jaws Intelligent Recognition terminal 2 in cable heap respectively the cable of one one carry out Signal analysis, the current signal recognized is transferred to many jaws Intelligent Recognition terminal 2 by the mode such as wifi, data line and judges, if the disturbing signal of the same frequency amplitude produced with variable current signal source 1 detected, then show test result by forms such as sound, light, words.
Although the foregoing describe embodiment of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.
Claims (7)
1. low-voltage electric cable pair verifies an instrument, it is characterized in that: comprise can intercom mutually variable current signal source, many jaws Intelligent Recognition terminal and a plurality of current clamp;
Described variable current signal source comprises system control unit, cable intrinsic signal detecting unit, disturbing signal generation unit, voltage automatic identification unit, interactive unit and system power supply; Described cable intrinsic signal detecting unit, disturbing signal generation unit and the equal connected system control module of interactive unit; Described system power supply is connected with voltage automatic identification unit, and described disturbing signal generation unit and voltage automatic identification unit are connected a disturbing signal decanting point of cable to be identified respectively;
Described many jaws Intelligent Recognition terminal comprises control system module, current detection module, frequency detection module, power module and mutual alarm module; Described current detection module, frequency detection module, power module and mutual alarm module are all connected to described control system module;
Described current clamp connects the cable intrinsic signal detecting unit in current detection module in described many jaws Intelligent Recognition terminal, frequency detection module and described variable current signal source respectively.
2. low-voltage electric cable pair according to claim 1 verifies instrument, it is characterized in that: described variable current signal source also comprises wireless communication unit, this wireless communication unit connected system control module; Described many jaws Intelligent Recognition terminal also comprises wireless communication module, described wireless communication module connection control system module.
3. low-voltage electric cable pair according to claim 1 verifies instrument, it is characterized in that: the connection between the current detection module in described current clamp and described many jaws Intelligent Recognition terminal, frequency detection module is wireless connections.
4. low-voltage electric cable pair according to claim 1 verifies instrument, it is characterized in that: described interactive unit comprises LCD display unit and key-press input unit, this LCD display unit and the equal connected system control module of key-press input unit.
5. low-voltage electric cable pair according to claim 1 verifies instrument, it is characterized in that: described mutual alarm module comprises LCD display module, KEY module and hummer, the equal connection control system module of this LCD display module, KEY module and hummer.
6. low-voltage electric cable pair according to claim 1 verifies instrument; it is characterized in that: described power module comprises charging module, lithium battery and protection circuit; described lithium battery connects charging module and control system respectively, and described protection circuit and charging module be connection control system module also.
7. low-voltage electric cable pair according to claim 6 verifies instrument, it is characterized in that: described protection circuit comprises fuse, equalizing voltage testing circuit, current sense resistor, protection IC and circuit, MOSFET discharge protection circuit and MOSFET charge protector; Described lithium battery connects fuse, equalizing voltage testing circuit and current sense resistor respectively; Described current sense resistor, MOSFET discharge protection circuit, MOSFET charge protector connect successively; Described equalizing voltage testing circuit, MOSFET discharge protection circuit and MOSFET charge protector all connect protection IC and circuit; Described fuse, protection IC and circuit, MOSFET charge protector all connect described control system module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273685.1A CN104865471B (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
| CN201520344317.7U CN204649868U (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273685.1A CN104865471B (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
| CN201520344317.7U CN204649868U (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
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| Publication Number | Publication Date |
|---|---|
| CN204649868U true CN204649868U (en) | 2015-09-16 |
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| CN201510273685.1A Active CN104865471B (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
| CN201520344317.7U Expired - Fee Related CN204649868U (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510273685.1A Active CN104865471B (en) | 2015-05-26 | 2015-05-26 | Low-voltage electric cable pair verifies instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865471A (en) * | 2015-05-26 | 2015-08-26 | 福州福光电子有限公司 | Low voltage live-line cable pair check meter |
| CN113049988A (en) * | 2021-03-12 | 2021-06-29 | 广东电网有限责任公司湛江供电局 | Method and device for identifying AC/DC cable, electronic equipment and storage medium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954785A (en) * | 2019-12-25 | 2020-04-03 | 国网辽宁省电力有限公司电力科学研究院 | On-site protection prefabricated cable calibration device and method |
| CN113049989A (en) * | 2021-03-24 | 2021-06-29 | 中国长江电力股份有限公司 | Electrified line checking instrument and line checking method for direct-current cable |
| CN113740777B (en) * | 2021-09-07 | 2024-07-05 | 北京百度网讯科技有限公司 | Line hunting equipment, line hunting method thereof, host and slave |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4158962A (en) * | 1978-03-03 | 1979-06-26 | Paul Conoval | Cable tension measuring apparatus |
| CN203405517U (en) * | 2013-08-13 | 2014-01-22 | 银川高新区负能科贸有限公司 | On-line type AC-DC cable detector |
| CN103399240B (en) * | 2013-08-13 | 2015-12-02 | 银川高新区负能科贸有限公司 | Uninterrupted power supply cable sorting device and method |
| CN104865471B (en) * | 2015-05-26 | 2017-11-03 | 福州福光电子有限公司 | Low-voltage electric cable pair verifies instrument |
-
2015
- 2015-05-26 CN CN201510273685.1A patent/CN104865471B/en active Active
- 2015-05-26 CN CN201520344317.7U patent/CN204649868U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865471A (en) * | 2015-05-26 | 2015-08-26 | 福州福光电子有限公司 | Low voltage live-line cable pair check meter |
| CN113049988A (en) * | 2021-03-12 | 2021-06-29 | 广东电网有限责任公司湛江供电局 | Method and device for identifying AC/DC cable, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104865471A (en) | 2015-08-26 |
| CN104865471B (en) | 2017-11-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150916 Termination date: 20180526 |