CN104407272B - A kind of cable identification device - Google Patents
A kind of cable identification device Download PDFInfo
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- CN104407272B CN104407272B CN201410784571.9A CN201410784571A CN104407272B CN 104407272 B CN104407272 B CN 104407272B CN 201410784571 A CN201410784571 A CN 201410784571A CN 104407272 B CN104407272 B CN 104407272B
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Abstract
The present invention discloses a kind of cable identification device, including signal generator and signal receiver, wherein, the signal generator includes power module, high-voltage transformation unit and control of discharge unit, the high-voltage transformation unit includes electronic impulse and occurs module, it is connected in parallel on voltage detecting circuit and pulsed capacitance in electronic impulse generation module, the control of discharge unit includes the time relay, the DC electromagnet for being used to control to carry out cable periodic discharge, and is connected to the mechanical periodic discharging switch of pulsed capacitance output end；The signal receiver includes flexible Luo-coil, control unit, the signal processing unit being connected with flexible Luo-coil, the data acquisition unit being connected with control unit, trigger element and man-machine interaction unit, and the power management module powered for unit in signal receiver；Cable identification device of the present invention, with recognition performance is reliable and stable, anti-interference strong, strong applicability, small volume the features such as.
Description
Technical field
The present invention relates to a kind of cable identification device, belong to cable identification technology field.
Background technology
With fast-developing and life of urban resident quality the raising of urban economy, people are to living environment and appearance of city
Requirement also more and more higher.Power cable is powered because its is safe and reliable, be conducive to the advantages of beautifying city and factories and miness are laid out,
Cable is set to turn into a kind of trend of New Times new century, it produces brand-new reality to beautifying urban environment and lifting city function
Effect, has obtained increasingly being widely applied.The fast development of urban economy, need for electricity is also increased substantially so that cable is robbed
Repair operation and cable moves that to change engineering also more and more.In moving and changing and rush to repair operation, cable duct or excavate is often many in region
Bar different cross-sectional, different grades of cable are laid side by side, it is necessary to which it is the cable to be found of this task, the work to distinguish which bar
Make to be referred to as cable identification.According to《Electric power safety working regulation》10.2.1.9 bar requirement, cable identification work be related to the person and
Equipment safety, the reliability of identification result is extremely important, it is necessary to which 100% accurately and reliably.
The conventional method of cable identification is verification drawing, and manual site is examined, but the drawing of cable laying is usually not enough advised
Model, not enough in detail, or even lose and damage, the change missing of environment and marker is buried in addition, it is difficult to find target cable.
Rely primarily on cable identifier to carry out cable identification at present.The discriminating instrument apparatus of current each producer both at home and abroad with
The typical case the most of SEBAKMT and BAUR companies.Although most of identifier products realize that circuit structure and technical parameter have not
Together, but its operation principle is roughly the same, mainly there is pulse polarity method（Sense of current method, is presently the most popularized）With frequency induction method
Two kinds（Carry out mainly in combination with cable trace detect operation）.A signal, the signal are added with transmitter from target cable head end
Characteristic quantity with the power current voltage signal significant difference with running cable, such as shape of sense of current, signal, amplitude
Size, the time and cycle and duration etc. of signal transmitting, each of place need to be differentiated by then being detected on request with receiver
The characteristic quantity of observation signal on bar cable, so as to determine the target cable.
Found in actual job, the most popular all kinds of cable identifiers of current use are meeting the interference feelings such as strong induced electricity
Under condition, frequently result in erroneous judgement or apply that signal is more difficult, even damaging identification instrument situation, this moves to change to cable and robbed with failure
Repair work and bring great security risk.The analysis found that, domestic many cities and area due to for easy construction or
Cable passage is nervous, and many mesolow cables are laid with EHV XLPE power cable using same channels, multicore cable and single electricity
Cable mixing is laid, and the objective environment of high water level often causes cable sheath multipoint earthing in a part of cable passage, is having a power failure
Tested cable and same passage run cable lay in the same direction longer or different cable grounding resistance difference it is larger in the case of, often make
Into inducing stronger induced-current or voltage on power failure cable run；Further, since the revision of new edition design specification, original
The sheath induced voltage of single-core cable has brought up to 300V on the premise of having insulation protection from 50V, is obtaining cable length
While the advantage that elongated, transition joint tails off, single-ended cable sheath induced voltage is greatly improved.
Currently used cable identifier is in order to reach the safe and reliable performance for taking into account small in volume, signal generator
Using middle low power, and the current signal amplitude added is influenceed by different cable grounding resistance, often results in induced electricity serious
The pulse signal that interference signal generator applies, induced electricity reaches after certain numerical value that the overvoltage automatic protection of instrument is acted, from
And it is difficult to cause signal to apply, part home products is without over-voltage protection module, or even the failure burnt out that occurred smoldering, this
Also be detrimental to currently widely used digital small-power cable identifier can not normal work the reason for one of so that significantly
It has impact on cable repairing and road move the live efficiency for changing the work such as engineering.
Moreover, either domestic or external import instrument, receiving instrument and pop one's head in it is larger, unsuitable test site
Using, such as cable shaft ditch, narrow space, receiving instrument is transferred to other use more difficult, even is difficult to instrument to be entrained into Jing Gou sometimes；Mesh
Before lay cable discharge it is more close, the distance between cable and space are too small, it is impossible to will probe or clamp be placed in therebetween, directly
Connect and have impact on being smoothed out for test.
So, the uniqueness of cable differentiates that to be badly in need of a kind of recognition performance reliable and stable, small volume, it is lightweight, be easy to test
The reception device that personnel carry with, particularly probe segment, given volume will be adapted to the test request of close-packed arrays cable.
In view of this, the present inventor is studied this, specially develops a kind of cable identification device, and thus this case produces
It is raw.
The content of the invention
It is reliable and stable, anti-interference strong, applicable with recognition performance it is an object of the invention to provide a kind of cable identification device
Property strong, small volume the features such as.
To achieve these goals, solution of the invention is：
A kind of cable identification device, including signal generator and signal receiver, wherein, the signal generator includes electricity
Source module, high-voltage transformation unit and control of discharge unit, the high-voltage transformation unit include electronic impulse and occur module, are connected in parallel on
Voltage detecting circuit and pulsed capacitance in module occurs for electronic impulse, and the control of discharge unit includes being used to control to cable
The time relay, the DC electromagnet of periodic discharge are carried out, and is connected to mechanical cycle of pulsed capacitance output end putting
Electric switch；The signal receiver includes flexible Luo-coil, control unit, the signal transacting list being connected with flexible Luo-coil
Member, the data acquisition unit being connected with control unit, trigger element and man-machine interaction unit, and in signal receiver each
The power management module that unit is powered；The low-voltage dc power supply that signal generator power module is provided is after control of discharge unit
Occur module into electronic impulse, directly export high direct voltage, voltage detecting circuit detects high direct voltage output valve in real time, export
High direct voltage charged for pulsed capacitance there is provided the energy of cable discharge, then cable is entered by the timing of control of discharge unit
Row electric discharge；The pulse signal of the tested cable of flexible Luo-coil detection in real time, and the pulse signal collected is sent to signal
Processing unit, signal processing unit is sent to data acquisition unit after filtering, after signal enhanced processing, and data acquisition unit will
The analog signal of input is converted to and control unit is sent to after data signal, control unit handle by analysis after by relevant information
Shown by man-machine interaction unit, control unit is simultaneously according to the output signal of trigger element, automatic start target cable
The collection of middle dash current signal waveform, and automatic identification target cable, are shown by man-machine interaction unit.
Preferably, the control of discharge unit further comprises the mechanical ground connection electric discharge for being connected in parallel on pulsed capacitance two ends
Switch, when cable induction voltage to be identified exceeds gap breakdown voltage, ground connection discharge switch is breakdown, and discharge prevention is believed over the ground
Number generator；When signal generator power-off or accident power-off, ground connection discharge switch action, pulsed capacitance shorted to earth,
Release storage electric energy, prevents that signal generator output is powered.
Preferably, the control of discharge unit is main by 2 groups of time relays, 2 groups of DC electromagnets, 1 it is mechanical
Periodic discharging switch, 1 mechanical ground connection discharge switch, and moving electrode and stationary electrode are constituted, and iron staff connects in DC electromagnet
Moving electrode is connect, stationary electrode is connected to signal generator output end, and DC electromagnet is connected with power module, time relay control
The on/off of DC electromagnet, direct solenoid railway traction moving electrode, when DC electromagnet power supply disconnects, DC electromagnet by
Gravity influence is fallen, and dynamic copper electrode is contacted with quiet copper electrode, and pulsed capacitance discharges target cable impacting with high pressure, produces in the cable
Raw pulse current, pulse current is maximum up to hundreds of amperes.When DC electromagnet power supply closes, DC electromagnet adhesive is drawn
Copper electrode is started, is isolated with cable, isolation voltage reaches 5kV, a discharge process is completed, the time relay constantly repeats above-mentioned put
Electric process, forms periodic discharging.The make-and-break time of regulating time relay, can adjust the cycle of pulses generation, sets the cycle as 6
Second is adjustable by 15 seconds.
Preferably, the power module includes power supply adaptor, rechargeable battery and power switch, power supply adaptor will be defeated
The 220VAC Power converts entered are that 24VDC power supplys are rechargeable battery charging, and rechargeable battery is control of discharge list by power switch
Member provides low-voltage dc power supply.The rechargeable battery uses polymer Li-ion rechargeable battery.
Preferably, the pulsed capacitance uses the noninductive pulsed capacitance of high pressure, internal oil-filled, overload capacity is strong, safely may be used
Lean on.
Connect preferably, the high-voltage transformation unit carries out the direct wiring of each circuit using 30KV silicon rubber insulations line
Connect.
The electronic impulse occurs module and voltage 24V mainly is converted into 3kV using electronic type high frequency high voltage dc power source
DC voltage, give storage capacitor charging.Its input voltage is DC24V, is output as direct current 3kV negative polarity high pressure.
Preferably, the control unit of the signal receiver uses 51 system single-chip microcomputers.
Preferably, peak comparator and valley that the trigger element includes being connected in parallel on signal processing unit compare
Device, the output end of peakedness ratio relatively strong and valley comparator is sequentially connected to be connected with door and d type flip flop, the control unit of d type flip flop.
Preferably, the man-machine interaction unit includes the display screen for data display and the button of user's input.
During a kind of above-mentioned cable identification device work, impacting with high pressure signal is applied to target cable core by signal generator
On, then signal flows back to signal generator along cable distribution to distal end by ground connection.Differentiating place, signal receiver is utilized
The current signal of each bar cable is flowed through in one flexible Luo-coil measurement, then goes out target cable according to the characteristic differentiation of signal.
Compared with prior art, cable identification device of the present invention has the following advantages that：
1) signal generator can produce 3kV direct current negative polarity high pressure, and the high direct voltage of output is filled for impulse capacitor
Electricity is discharged cable by the switch timing of mechanical periodic discharging there is provided the energy of cable discharge, solves strong induced electricity
Under, the problem of pulse signal is difficult to apply；
2) powered using high performance chargeable lithium cell, can under most rugged environments normal work, it is ensured that
The adaptability of instrument, the problem of solving live AC-less power；
3) signal generator is safe, inside sets control of discharge unit, can be straight under the state of emergency or powering-off state
Connect short circuit pulse electric capacity, it is ensured that cable identification device is without High voltage output；Simultaneously when cable induction voltage to be identified is hit beyond gap
When wearing voltage, ground connection discharge switch is breakdown, over the ground discharge prevention instrument, strong antijamming capability；Casing and High voltage output
Protection is added between place of working, it is ensured that the safety of operating personnel；
4) electric signal generator overall appearance is generous, simple and practical, and in operation, wiring is easy, and simple to operate, performance is steady
It is fixed, it is safe and reliable；
5) signal receiver uses portable detecting structure, is got by flexible Luo-coil after pulse signal, passes through
After signal processing unit filtering, enhanced processing, it is conveyed to control unit and carries out operational analysis, after confirmation is effective impulse, leads to
Cross good man-machine interface to be shown, characteristic and the filtering of signal processing unit bandpass filter using flexible Luo-coil
Effect, eliminates the influence of power current, erroneous judgement is prevented, as detection device, because scene is in disturbance of industry frequency
Detected under environment, the Intelligent Measurement of instrument can judge the possibility failed to judge by accident unavoidably, it is therefore desirable to provide good people
Machine is interacted, and makes up the misjudgment phenomenon being likely to occur.
6) because site environment has disturbance of industry frequency, cable size is thick, and clamp opening can not effectively cover cable etc.
Problem, so traditional caliper brake current transformer can not be used, and the flexible Luo-coil that the present invention is used is one
The coil of individual hollow circular, without iron core, no hysteresis effect is inputted without saturation, measurement range is wide, can bear high current, be difficult
By outside electromagnetic interference, and Rogowski coil does not have direct circuit to contact with tested loop in itself, but passes through electromagnetic field coupling
Close, realize measuring loop with tested loop isolating electrically, easily received, use safety；Rogowski coil response frequency model
Width is enclosed, the response time is fast, and the response time can reach uS ranks, can comply with fast changing electric current；It is linear that Rogowski coil is exported
Degree is preferable, can reach 0.2%, can accurately reflect the size of input signal.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Brief description of the drawings
Fig. 1 detects state diagram for the cable identification device of the present embodiment；
Fig. 2 is the signal generator theory diagram of the present embodiment；
Fig. 3 is the signal generator control of discharge unit electrical schematic diagram of the present embodiment；
Fig. 4 is the signal receiver theory diagram of the present embodiment；
Fig. 5 is the signal receiver trigger element schematic diagram of the present embodiment.
Embodiment
As shown in figure 1, a kind of cable identification device, including signal generator 1 and signal receiver 2, during work, signal hair
Impacting with high pressure signal is applied on the core of target cable 3 by raw device 1, and signal travels to distal end along cable 3, then by ground connection stream
Return signal generator 1.Differentiating place, signal receiver 2 flows through each bar cable 3 using a measurement of flexible Luo-coil 21
Current signal, then goes out target cable according to the characteristic differentiation of signal.
As shown in Fig. 2 the signal generator 1 includes power module, high-voltage transformation unit and control of discharge unit 14, institute
Stating power module includes power supply adaptor 11, rechargeable battery 12 and power switch 13, and power supply adaptor is electric by the 220VAC of input
Source is converted to 24VDC power supplys and charged for rechargeable battery 12, and rechargeable battery 12 is that control of discharge unit 14 is carried by power switch 13
For low-voltage dc power supply.In the present embodiment, the rechargeable battery 12 uses polymer Li-ion rechargeable battery, direct current output
24V, capacity reaches 20Ah, and moment operating current is equipped with high-performance electric source adapter 11, maximum charging current is reachable in more than 40A
2.5A, and with constant-current charge and full of automatic stop function.The high-voltage transformation unit includes electronic impulse and occurs module 15, in parallel
Occur the voltage detecting circuit 16 and pulsed capacitance 17 in module 15 in electronic impulse.The operation principle of signal generator 1 is：Institute
The low-voltage dc power supply for stating power module offer enters electronic impulse generation module 15 after control of discharge unit, directly exports
High direct voltage, voltage detecting circuit 16 detects high direct voltage output valve in real time, and the high direct voltage of output charges for pulsed capacitance 17,
The energy of cable discharge is provided, then cable discharged by the timing of control of discharge unit.
The control of discharge unit is main by very first time relay 1KT, and the second time relay 2KT, the cable cycle puts
Direct current electric magnet 3YA1, ground connection electric discharge DC electromagnet 3YA2, the mechanical cycle for being connected to the output end of pulsed capacitance 17 put
Electric switch S1, is connected in parallel on the mechanical ground connection discharge switch S2 at the two ends of pulsed capacitance 17, and moving electrode and stationary electrode are constituted, and 2
Iron staff connects moving electrode in individual DC electromagnet, and stationary electrode is connected to signal generator output end, DC electromagnet and power supply mould
Block is connected, and very first time relay 1KT, the second time relay 2KT is time-delay relay, wherein, very first time relay
The general delay times of 1KT 6 seconds to 15 seconds（Main purpose one is in order to ensure storage capacitor is fully charged；Two be obvious in order to be formed
Period distances, be easy to operation recognize）, in the present embodiment, very first time relay 1KT settings delay 6 seconds, the second time relay
Device 2KT is set as 0.4 second.The on/off of Control DC electromagnet, direct solenoid railway traction moving electrode, works as direct current
When magnet power supply disconnects, DC electromagnet, which is affected by gravity, to be fallen, and dynamic copper electrode is contacted with quiet copper electrode, and pulsed capacitance 17 is to mesh
The electric discharge of cable impacting with high pressure is marked, pulse current is produced in the cable, pulse current is maximum up to hundreds of amperes.Work as DC electromagnet
When power supply closes, copper electrode is moved in DC electromagnet adhesive, pull-up, is isolated with cable, and isolation voltage reaches 5kV, and completion is once discharged
Process, as shown in figure 3, the concrete operating principle of control of discharge unit is：After turning on the power switch 13, DC electromagnet
The upper electric pull-up of 3YA1,3YA2, two switches are in open mode；2KT-1 is normally-closed contact, and the very first time, relay 1KT was through contact
2KT-1 is connected, due to being delayed, after 6s time delayses are reached, very first time relay 1KT actions, normally-closed contact
1KT-1 is opened, cable periodic discharging DC electromagnet 3YA1 power-off, and is fallen, and pulsed capacitance 17 is to cable discharge；The very first time
Relay 1KT normally opened contact 1KT-2 closures, the second time relay 2KT is powered, after 0.4s, second time relay
2KT is acted, and normally-closed contact 2KT-1 actions are opened, very first time relay 1KT power-off, normally-closed contact 1KT-1 power-failure closes, electricity
Electric pull-up on cable periodic discharging DC electromagnet 3YA1, electronic impulse occurs module 15 and pulsed capacitance 17 is charged, normally opened contact
1KT-2 power-off is opened, time relay 2KT power-off, normally-closed contact 2KT-1 closures, electricity, new cycle on time relay 1KT
Circulation starts.When signal generator power-off or accident power-off, ground connection electric discharge DC electromagnet 3YA2 power-off, ground connection electric discharge
Switch S2 actions are fallen, the shorted to earth of pulsed capacitance 16, release storage electric energy, are prevented device and are exported powered, when electricity to be identified
When cable induced voltage exceeds gap breakdown voltage, ground connection discharge switch S2 is breakdown, over the ground discharge prevention signal generator；
In the present embodiment, the pulsed capacitance 16 uses the noninductive pulsed capacitance of high pressure, and internal oil-filled, overload capacity is strong,
It is safe and reliable.High frequency high voltage dc power source output is terminated with 50k Ω resistance, is connected to 10 μ F/5kV storage capacitor, during power frequency,
Capacitive reactance is about 318 Ω, and when induced voltage is 300V in cored wire, the electric current of generation is less than 1A, and DC pulse current is up to several
Hundred amperes.And pulse, much larger than induced voltage, readily can be applied on cable by DC pulse voltage up to 3kV.
The electronic impulse is occurred module 16 and is mainly changed 24V DC voltages using electronic type high frequency high voltage dc power source
Into 3kV DC voltage, storage capacitor charging is given.The input voltage that module 16 occurs for electronic impulse is DC24V, is output as direct current
3kV negative polarity high pressure.The high-voltage transformation unit carries out the direct wiring connection of each circuit using 30KV silicon rubber insulations line.
As shown in figure 4, the signal receiver 2 includes flexible Luo-coil 21, control unit 23, with flexible Luo-coil
The connected signal processing unit 22 of coil 21, the data acquisition unit 24 being connected with control unit 23, trigger element 25 and man-machine
Interactive unit 26, and the PMU powered for unit in signal receiver.Flexible Luo-coil 21 is examined in real time
The pulse signal of tested cable is surveyed, and the pulse signal collected is sent to signal processing unit 22, signal processing unit 22
After filtering, data acquisition unit 24 is sent to after signal enhanced processing, data acquisition unit 24 turns the analog signal of input
It is changed to after data signal and is sent to control unit 23, relevant information is passed through man-machine interaction by control unit 23 after handling by analysis
Unit 26 shown, control unit 23 can impact electricity according to the output signal of trigger element 25 in automatic start target cable
The collection of signal waveform is flowed, while according to the data of collection, automatic decision goes out target cable, and is carried out by man-machine interaction unit
Display.
The man-machine interaction unit 26 includes the liquid crystal display for data display and the button of user's input.In this implementation
Example Hu is total, it is contemplated that to show pulse waveform signal, therefore display screen uses resolution ratio for the monochrome of 240X128 yellow bottom surplus
Giant-screen dot matrix graphic liquid crystal.Button includes " start ", " shutdown ", " pause ", " backlight ", " memory ", " comparison ", " a left side
Shifting ", " moving to right " eight keys.
The control unit 23 of the signal receiver 2, which is used in 51 system single-chip microcomputer 89C58, single-chip microcomputer 89C58 pieces, 32K
The EPROM of byte, therefore without outside extender memory.Single-chip microcomputer 89C58 can according to the output signal of trigger element,
The collection of dash current signal waveform in automatic start target cable, and be shown on liquid crystal display, while according to the data of collection,
Automatic decision goes out target cable.
As shown in figure 5, the trigger element 25 includes peak comparator 251 and the paddy being connected in parallel on signal processing unit 22
The output end of value comparator 252, peakedness ratio stronger 251 and valley comparator 252 is sequentially connected and door 253 and d type flip flop 254, D
The control unit 23 of trigger 254 is connected.The data-signal that signal receiver 2 is gathered is High-voltage Signal Generator at interval of electric discharge
Cycle is applied to the dash current signal on cable.Due to the uncertainty of dash current signal generation time, rely solely on soft
Part triggering mode, it is impossible to ensure the real-time collection to impacting current signal., must to ensure the real-time collection to impacting current signal
Must design hardware trigger unit.The function of trigger element is exactly to capture the dash current signal in cable, and triggers single-chip microcomputer and open
Open data acquisition.The d type flip flop 254 of trigger element 25 has reset function, after the completion of data acquisition, can reset d type flip flop
254, to facilitate next trigger data acquisition.In the present embodiment, discharge cycle is about 150 μ s, and triggering collection in real time is in this week
200 points or so of triggering set of frequency is given before and after phase after appropriate extension.
Signal receiver 2 described in the present embodiment uses lithium battery, lithium battery have service life length, capacity it is big, without note
Recall effect, using it is safe the features such as.Lithium battery single-unit voltage is 3.6V, and the circuit voltage such as single-chip microcomputer and data acquisition is
5V, therefore in the design by the way of 2 section series connection, then three linear integrated regulators of process are converted into single-chip microcomputer and other
Chip required voltage.Lithium battery voltage is 7.2V, and capacity is 1.2Ah, and battery is available for instrument to run 5 hours or so.This implementation
PMU described in example carries special AD conversion chip, converts battery voltage to data signal, can gather in real time
Battery electric quantity, and electricity is shown in liquid crystal display, while having automatic shutoff protective functions during battery undervoltage.Battery charger is inputted
Voltage range is wide（Input voltage is AC110~AC220V）, with overcharge protection etc. function.
Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common
Appropriate change or modification that technical staff is done to it, all should be regarded as not departing from the patent category of the present invention.
Claims (8)
1. a kind of cable identification device, it is characterised in that：Including signal generator and signal receiver, wherein, the signal hair
Raw device includes power module, high-voltage transformation unit and control of discharge unit, and the high-voltage transformation unit includes electronic impulse
Module, is connected in parallel on voltage detecting circuit and pulsed capacitance in electronic impulse generation module, and the control of discharge unit includes using
The time relay, the DC electromagnet of periodic discharge are carried out to cable in control, and is connected to pulsed capacitance output end
Mechanical periodic discharging switch；The signal receiver includes flexible Luo-coil, and control unit is connected with flexible Luo-coil
Signal processing unit, the data acquisition unit being connected with control unit, trigger element and man-machine interaction unit, and for signal
The power management module that unit is powered in receiver；The low-voltage dc power supply that signal generator power module is provided is by putting
Enter electronic impulse after electric control unit and occur module, directly export high direct voltage, voltage detecting circuit detects that direct current is high in real time
Output valve is pressed, the high direct voltage of output charges there is provided the energy of cable discharge for pulsed capacitance, then passes through control of discharge unit
Timing is discharged cable；The pulse signal of the tested cable of flexible Luo-coil detection in real time, and the pulse collected is believed
Number it is sent to signal processing unit, signal processing unit is sent to data acquisition unit after filtering, after signal enhanced processing, number
The analog signal of input is converted to according to collecting unit control unit is sent to after data signal, control unit is handled by analysis
Relevant information is shown by man-machine interaction unit afterwards, control unit is simultaneously according to the output signal of trigger element, automatically
Start the collection of dash current signal waveform in target cable, and automatic identification target cable, carried out by man-machine interaction unit
Display；
The control of discharge unit further comprises the mechanical ground connection discharge switch for being connected in parallel on pulsed capacitance two ends；
The control of discharge unit is main by 2 groups of time relays, 2 groups of DC electromagnets, 1 mechanical periodic discharging switch, 1
Individual mechanical ground connection discharge switch, and moving electrode and stationary electrode are constituted, iron staff connection moving electrode, stationary electrode in DC electromagnet
Signal generator output end is connected to, DC electromagnet is connected with power module, the time relay controls the electricity of DC electromagnet
Source break-make, direct solenoid railway traction moving electrode, when DC electromagnet power supply disconnects, DC electromagnet, which is affected by gravity, to be fallen,
Moving electrode is contacted with stationary electrode, and pulsed capacitance discharges target cable impacting with high pressure, when DC electromagnet power supply closes, direct current
Electromagnetic actuation, pull-up moving electrode, isolates with cable, completes a discharge process.
2. a kind of cable identification device as claimed in claim 1, it is characterised in that：The power module includes power adaptation
The 220VAC Power converts of input are that 24VDC power supplys are that rechargeable battery fills by device, rechargeable battery and power switch, power supply adaptor
Electricity, rechargeable battery provides low-voltage dc power supply by power switch for control of discharge unit, rechargeable battery using polymer lithium from
Sub- rechargeable battery.
3. a kind of cable identification device as claimed in claim 1, it is characterised in that：The pulsed capacitance uses the noninductive arteries and veins of high pressure
Rush electric capacity.
4. a kind of cable identification device as claimed in claim 1, it is characterised in that：The high-voltage transformation unit uses 30KV silicon
Rubber-insulated wire carries out the direct wiring connection of each circuit.
5. a kind of cable identification device as claimed in claim 1, it is characterised in that：The electronic impulse occurs module and mainly adopted
Voltage 24V is converted into 3kV DC voltage with electronic type high frequency high voltage dc power source, its input voltage is DC24V, is output as
Direct current 3kV negative polarity high pressure.
6. a kind of cable identification device as claimed in claim 1, it is characterised in that：The control unit of the signal receiver is adopted
With 51 system single-chip microcomputers.
7. a kind of cable identification device as claimed in claim 1, it is characterised in that：The trigger element includes being connected in parallel on signal
The output end of peak comparator and valley comparator on processing unit, peak comparator and valley comparator is sequentially connected and door
And d type flip flop, the control unit of d type flip flop is connected.
8. a kind of cable identification device as claimed in claim 1, it is characterised in that：The man-machine interaction unit includes being used to count
According to the display screen and the button of user's input of display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410784571.9A CN104407272B (en) | 2014-12-16 | 2014-12-16 | A kind of cable identification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410784571.9A CN104407272B (en) | 2014-12-16 | 2014-12-16 | A kind of cable identification device |
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| CN104407272B true CN104407272B (en) | 2017-09-08 |
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| CN201410784571.9A Active CN104407272B (en) | 2014-12-16 | 2014-12-16 | A kind of cable identification device |
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| CN105448453B (en) * | 2016-01-13 | 2017-10-27 | 华中科技大学 | A kind of Rogowski coil based on coaxial cable skeleton |
| SG10201602767RA (en) * | 2016-04-08 | 2017-11-29 | Singapore Power Ltd | Non-clamping method and apparatus for identification of dead underground power utility cable from spatially adjacent power utility cables |
| CN105891641A (en) * | 2016-05-04 | 2016-08-24 | 国网上海市电力公司 | Cable recognition device and recognition method |
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| CN106324450B (en) * | 2016-08-05 | 2020-01-03 | 中国电力科学研究院 | Characteristic impedance matching method in cable transmission attenuation characteristic test |
| CN107024634B (en) * | 2017-06-05 | 2019-05-31 | 芜湖侨云友星电气工业有限公司 | One kind using power-on detection device for harness test |
| CN107290632A (en) * | 2017-07-31 | 2017-10-24 | 崔旭涛 | A kind of portable aviation cable fault test system |
| CN109425805A (en) * | 2017-09-01 | 2019-03-05 | 中国科学院长春光学精密机械与物理研究所 | The single-ended measurement method of cable on-off and system on machine |
| CN108646301A (en) * | 2018-06-11 | 2018-10-12 | 国网山东省电力公司烟台供电公司 | A kind of detection method and detection device in low-voltage cable path |
| CN109738743A (en) * | 2018-12-29 | 2019-05-10 | 深圳市宇鸿图电气有限公司 | A kind of identification device of route uniqueness |
| CN109884470B (en) * | 2019-03-11 | 2022-07-01 | 苏州腾征智能装备有限公司 | Precision cable testing system |
| JP7255322B2 (en) * | 2019-04-03 | 2023-04-11 | 株式会社デンソー | Insulation inspection device and insulation inspection method |
| CN110596511A (en) * | 2019-08-27 | 2019-12-20 | 和昊元(北京)科技有限公司 | Low-frequency pulse signal line searching system |
| US11349965B1 (en) * | 2020-12-17 | 2022-05-31 | Dell Products L.P. | Self-describing cable |
| CN113933753A (en) * | 2021-09-19 | 2022-01-14 | 国网江苏省电力有限公司检修分公司 | Device for distinguishing secondary circuit of transformer substation and identifying cable |
| CN114465193B (en) * | 2022-01-11 | 2024-01-16 | 深圳市德拜科技有限公司 | Underwater sound wave generating device, control method, system and storage medium |
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| JP2000221228A (en) * | 1999-02-03 | 2000-08-11 | Nec Corp | Method and system for recognizing connection of connector |
| CN102955099A (en) * | 2012-11-12 | 2013-03-06 | 江苏省电力公司无锡供电公司 | Testing method for high-voltage cable identification and device thereof |
| CN203396888U (en) * | 2013-08-04 | 2014-01-15 | 杭州智伦电力科技有限公司 | Multifunctional cable identification apparatus |
| CN203941198U (en) * | 2014-05-30 | 2014-11-12 | 咸亨国际（杭州）电气制造有限公司 | A kind of portable cable fault Positioning Power device |
| CN204269755U (en) * | 2014-12-16 | 2015-04-15 | 国家电网公司 | A kind of cable identification device |
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