CN203396865U - Novel cable identification device - Google Patents
Novel cable identification device Download PDFInfo
- Publication number
- CN203396865U CN203396865U CN201320469997.6U CN201320469997U CN203396865U CN 203396865 U CN203396865 U CN 203396865U CN 201320469997 U CN201320469997 U CN 201320469997U CN 203396865 U CN203396865 U CN 203396865U
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- recognition device
- circuit
- receiver
- cable
- power supply
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Abstract
The utility model is a novel cable identification device. A current signal obtained coupled from a cable to be tested is amplified through an amplification circuit of a receiver, so that a clear signal can be received by the receiver, thereby ensuring the test accuracy of the cable identification device. At the same time, a protection circuit internally provided with a self-recovery fuse is arranged between the amplification circuit and a digital-to-analog conversion circuit, and when the circuit is overloaded, the self-recovery fuse is disconnected automatically, so that the cable identification device is protected from being burned out, and the usage security and the service life of the cable identification device are ensured.
Description
Technical field
The utility model relates to electric system detection technique, is specifically related to a kind of novel cable recognition device.
Background technology
In the application process of power cable, conventionally to identify one group of same model cable, to judge wherein not charged (not moving) cable, the most frequently used method is at present: in one end of cable, add a DC signal to tested not live electric cable, output current I, because the ground wire in one group of cable links together, therefore on every cable earth wire, can get electric current and be respectively I1, I2 ... In, current relationship is wherein: I=I1+12 ... + In.Tested cable is I-I1 by the induction current of ring current sensor, and its direction is identical with electric current I direction, and the electric current of other cable is respectively I/n, direction and electric current I opposite direction.Therefore can judge tested cable by being connected to the pointer direction of the DC ammeter of ring current sensor, facts have proved that this method is a kind of very effective method.
But currently used ring current sensor class is similar to the principle of clamp on amperemeter, and the thickness kind of power cable is a lot of in reality, and at the scene, power cable is often closely arranged together disorderly, adopt a kind of bore clamp on amperemeter to be difficult to meet the needs of actual field, and cable recognition device is in the market because its use is DC signal, when long-distance transmissions, due to the loss of cable own, cause cable recognition device to be difficult to identify voltanism signal, cause cable recognition device to detect inaccurate.On the other hand, because cable recognition device adopts direct supply as the source of current signal, because of its electric current little; cable recognition device on existing market does not generally arrange overload protecting circuit; therefore,, when it occurs overload situations, be easy to cable recognition device to burn out.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model aims to provide a kind of with overload protection and identify novel cable recognition device accurately.
For achieving the above object; the utility model adopts following technical scheme: a kind of novel cable recognition device; it comprises for generation of the transmitter in current signal source, receiver and for described transmitter and receiver provides respectively the power supply of electric weight; it is characterized in that: described receiver comprises inductive coil, interface circuit and the amplifying circuit being connected successively with described interface circuit, holding circuit and analog to digital conversion circuit; and described inductive coil is looped around on tested cable, and the signal detecting is delivered to and amplifying circuit by interface circuit.
On the basis of such scheme, preferably, described inductive coil is provided with the plastic hoop of adjustable size.
On the basis of such scheme, preferably, in described holding circuit, be provided with resettable fuse.
On the basis of such scheme, preferably, described resettable fuse is made by polymkeric substance macromolecule PPTC.
On the basis of such scheme, preferably, described power supply is detachable power supply.
On the basis of such scheme, preferably, described power supply is included as described transmitter and the first battery of power supply is provided and provides the second battery of power supply for described receiver.
On the basis of such scheme, preferably, described receiver also comprises a LCDs, and described LCDs is connected with analog-digital conversion circuit as described.
The beneficial effects of the utility model are:
Than prior art, a kind of novel cable recognition device of the utility model, amplifying circuit by receiver amplifies the current signal obtaining from tested cable coupling, makes receiver can receive more clearly signal, with the accuracy of guaranteeing that cable recognition device detects; Meanwhile, the holding circuit of a built-in resettable fuse is set between amplifying circuit and D/A converting circuit, when circuit overloads, resettable fuse automatic cutout, thus protection cable recognition device is not burned, and guarantees its safety in utilization and serviceable life thereof.
Accompanying drawing explanation
Fig. 1 is the fundamental diagram of a kind of novel cable recognition device of the utility model.
Fig. 2 is the receiver circuit schematic diagram of a kind of novel cable recognition device of the utility model.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
Refer to Fig. 1, a kind of novel cable recognition device of the present invention, it comprises the transmitter 10 for generation of current signal source, receiver 20 for detection of the current information of exporting on tested cable, and provide respectively the power supply 30 of electric weight for transmitter 10 and receiver 20, wherein: this transmitter 10 comprises first interface 11 and the second interface 12, described receiver 20 comprises inductive coil 21, interface circuit 22, and the amplifying circuit 23 being connected successively with described interface circuit 22, holding circuit 24 and analog to digital conversion circuit 25, and described inductive coil 21 is looped around on tested cable, and the current signal detecting is delivered to and amplifying circuit 23 by interface circuit 22.
During use, power supply 30 is connected with transmitter 10 by wire, being connected to and being identified on cable by inductive coil transmitter 10, and the two ends that are identified cable are all connected with the earth by ground nail 106, form Yi Ge loop, meanwhile, receiver 20 is passed through to wire connected power 30, and the inductive coil 21 of receiver 20 is enclosed within and is needed on detected one of them cable of cable.Transmitter 10 sends the current signal that strength of current is I, as shown in Figure 2, because all cables are all connected with the earth, so No. 1 cable 101, No. 2 cables 102, electric current in No. 4 cables 104 and No. 5 cables 105 is return current, strength of current is I/5, and direction of current is contrary with I, and strength of current in No. 3 cables 103 is I-I/5, direction is identical with I, the inductive coil 21 of receiver 20 inputs to interface circuit by the current coupling on tested cable, and be sent to amplifying circuit 23 by interface circuit 22, signal is by after amplifying circuit 23, after analog to digital converter 25, be presented in LCDs 26, user can be by observing the numerical value in LCDs 26, just can directly find the cable of required identification.The current signal obtaining due to receiver 20 couplings is exaggerated, therefore, receiver 2 can receive more clearly signal, can effectively avoid causing because of signal attenuation the error of cable recognition device, guarantee the accuracy of this device, simultaneously, the holding circuit 24 of one built-in resettable fuse is set between amplifying circuit 23 and D/A converting circuit 25, when circuit overloads, resettable fuse automatic cutout, thereby protection cable recognition device is not burned, guarantee its safety in utilization and serviceable life thereof, wherein this resettable fuse is preferably made by polymkeric substance macromolecule PPTC.
Please continue to refer to Fig. 2, for overcoming traditional cable recognition device, adopt a kind of pincerlike coupling device of bore, be difficult to meet the different needs of required bore of power cable varying number cable in scene, described inductive coil is provided with the plastic hoop of adjustable size, user can be by adjusting plastic hoop size so that inductive coil fits tightly on tested cable, make its watt current signal obtaining through inductive coil reach maximum, thus the signal accuracy that assurance receives.
In order to improve the utilization factor of power supply, described power supply 30 is detachable power supply, and described power supply is included as described transmitter and the first battery 31 of power supply is provided and provides the second battery 32 of power supply for described receiver, because the power of transmitter 10 is greater than the power of receiver 20, after the first battery 31 uses of transmitter 10 are over, user can change the first battery 31 to receiver 20 and continue use, thereby realizes making full use of of battery.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion all should belong to the protection domain of the utility model claim within.
Claims (7)
1. a novel cable recognition device; it comprises for generation of the transmitter in current signal source, receiver and for described transmitter and receiver provides respectively the power supply of electric weight; it is characterized in that: described receiver comprises inductive coil, interface circuit and the amplifying circuit being connected successively with described interface circuit, holding circuit and analog to digital conversion circuit; and described inductive coil is looped around on tested cable, and the signal detecting is delivered to and amplifying circuit by interface circuit.
2. novel cable recognition device as claimed in claim 1, is characterized in that: described inductive coil is provided with the plastic hoop of adjustable size.
3. novel cable recognition device as claimed in claim 1, is characterized in that: in described holding circuit, be provided with resettable fuse.
4. novel cable recognition device as claimed in claim 3, is characterized in that: described resettable fuse is made by polymkeric substance macromolecule PPTC.
5. novel cable recognition device as claimed in claim 1, is characterized in that: described power supply is detachable power supply.
6. novel cable recognition device as claimed in claim 5, is characterized in that: described power supply is included as described transmitter and the first battery of power supply is provided and provides the second battery of power supply for described receiver.
7. novel cable recognition device as claimed in claim 1, is characterized in that: described receiver also comprises a LCDs, and described LCDs is connected with analog-digital conversion circuit as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469997.6U CN203396865U (en) | 2013-08-04 | 2013-08-04 | Novel cable identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320469997.6U CN203396865U (en) | 2013-08-04 | 2013-08-04 | Novel cable identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203396865U true CN203396865U (en) | 2014-01-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320469997.6U Expired - Fee Related CN203396865U (en) | 2013-08-04 | 2013-08-04 | Novel cable identification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203396865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919028A (en) * | 2018-06-15 | 2018-11-30 | 国网浙江省电力有限公司杭州供电公司 | Cable line-hunting method and device based on Faraday's electromagnetic induction law |
-
2013
- 2013-08-04 CN CN201320469997.6U patent/CN203396865U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919028A (en) * | 2018-06-15 | 2018-11-30 | 国网浙江省电力有限公司杭州供电公司 | Cable line-hunting method and device based on Faraday's electromagnetic induction law |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG ZHILUN ELECTRIC POWER TECHNOLOGY CO., LTD Free format text: FORMER NAME: HANGZHOU ZHILUN ELECTRIC POWER TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 2, No. 452, No. 310000, No. 6, Poplar Street, Hangzhou economic and Technological Development Zone, Zhejiang, province, B0701-B0710 Patentee after: Hangzhou Zhilun Electric Power Science & Technology Co., Ltd. Address before: 2, No. 452, No. 310000, No. 6, Poplar Street, Hangzhou economic and Technological Development Zone, Zhejiang, province, B0701-B0710 Patentee before: Hangzhou Zhilun Electric Power Science & Technology Co., Ltd. |
|
| 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: 20140115 Termination date: 20170804 |