CN204758743U - Low tension cable recognition device - Google Patents
Low tension cable recognition device Download PDFInfo
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- CN204758743U CN204758743U CN201520453728.XU CN201520453728U CN204758743U CN 204758743 U CN204758743 U CN 204758743U CN 201520453728 U CN201520453728 U CN 201520453728U CN 204758743 U CN204758743 U CN 204758743U
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- 238000012360 testing method Methods 0.000 claims description 5
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- 229910001416 lithium ion Inorganic materials 0.000 description 1
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Abstract
The utility model provides a low tension cable recognition device, includes signal generator, signal collector, signal generator is including discharging the control unit, power input unit, pour into the switch into, the the control unit that discharges includes pulse generation unit, pulse electric capacity, ADC voltage detection unit, the signal amplification unit, the signal output unit, pulse generation unit establishes ties with pulse electric capacity, pulse electric capacity is established ties with the signal amplification unit, and it is parallelly connected with ADC voltage detection unit, the signal amplification unit is established ties with the signal output unit, power input unit and injection switch all are connected with pulse generation unit, signal collector includes signal processing unit and the power input unit, the analog quantity measuring unit that are connected with signal processing unit, the button resets, analog quantity measuring unit is including gathering passageway, current transformer. Simple structure, easy and simple to handle, the maintenance process need not frequent power failure, ensure can be rapid, accurate under trouble or other emergency the problem of cutting off cable run, maintenance efficiency is high.
Description
Technical field
The utility model relates to cable identification equipment technical field.
Background technology
Along with widely using of low-voltage cable, underground low-voltage number of cables and equipment get more and more.Due to, cable line such as to be generally layed in underground or wall at the shelter, and early stage low-voltage cable construction is not strict, mark, data etc. are serious complete or identify aging fuzzy, cable one end can only be seen in scene, another section of whereabouts is difficult to down find or offer a clear explanation in situations such as not having mark or data mutually, is that the concentrated Shi Gengnan that lays of many low-voltage cables differentiates by it.When there is line fault, or because some special accidental cause is as fire etc., when needing to disconnect separately certain low-voltage cable circuit, as unintelligible in line alignment nameplate mark, mistake or disappearance, cause finding cable line very difficult to inductive switch.
In emergency circumstances can cut off problem cable line rapidly, accurately in order to ensure in fault or other, just must ensure that the nameplate of on-site cable circuit and equipment is complete, accurate.But existing equipment is difficult to complete paired cable, precisely seeking of equipment when charged to be looked into, and frequently can not have a power failure again because examining cable to user.So, cannot seek mark, cable line that data is incomplete and look into, supplement, the problems such as excessive, the accident treatment time growth of easily causing the accident.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and provide a kind of low-voltage cable recognition device, structure is simple, easy to operate, stable performance, can the corresponding relation of identification switch and cable fast and accurately, maintenance process is without the need to frequent power failure, and overhaul efficiency is high.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of low-voltage cable recognition device, comprises signal generator, signal picker;
Described signal generator comprises control of discharge unit, power input unit, injection switch, and described power input unit, injection switch are all connected with described control of discharge unit;
Described control of discharge unit comprises impulse generating unit, pulsed capacitance, ADC voltage detection unit, signal amplification unit, signal output unit, described impulse generating unit is connected with described pulsed capacitance, described pulsed capacitance is connected with described signal amplification unit, and it is in parallel with described ADC voltage detection unit, described signal amplification unit is connected with described signal output unit, and described power input unit and described injection switch are all connected with described impulse generating unit;
Described signal output unit ground connection, and be connected by one end of the wire with cable under test that are connected with crocodile clip;
Described signal picker comprises signal processing unit, power input unit, analog measurement unit, reset key, and described power input unit, analog measurement unit, reset key are all connected with described signal processing unit;
Described analog measurement unit comprises some acquisition channels, some current transformers, acquisition channel described in each is all connected with the cable line low tension switch being positioned at the described cable other end by described current transformer, and described current transformer is connected with described cable line low tension switch by crocodile clip.
As further technical scheme, described acquisition channel, described current transformer are equipped with 16.
As further technical scheme, described current transformer is open-type current transformer, and no-load voltage ratio is respectively 200A/50mA and 100A/50mA.
As further technical scheme, described impulse generating unit connects power light, injects pilot lamp, and described impulse generating unit, pulsed capacitance, ADC voltage detection unit all connect run indicator.
As further technical scheme, described signal processing unit also connects respectively at power lights, running indicator, stand by lamp.
The beneficial effect adopting technique scheme to produce is:
Transmitted by signal generator, by the current signal of each switch of signal picker synchronous acquisition, find the corresponding relation of cable and switch, structure is simple, easy and simple to handle, maintenance process is without the need to frequent power failure, and guarantee in emergency circumstances to cut off problem cable line rapidly, accurately in fault or other, overhaul efficiency is high.
Accompanying drawing explanation
Fig. 1 is using state schematic diagram of the present utility model;
Fig. 2 is the structural representation of signal generator in Fig. 1;
Fig. 3 is the structural representation of signal picker in Fig. 1;
Fig. 4 is the structural representation of control of discharge unit in Fig. 2;
Fig. 5 is the structural representation of analog measurement unit in Fig. 3.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
1-5 as shown in the figure, is an embodiment of a kind of low-voltage cable recognition device of the utility model, comprises:
Signal generator, signal picker, respectively at cable one end generation signal and at other end Received signal strength.During work, high-voltage pulse signal (high-frequency characteristic sequence carrier current) is applied on target cable core by signal generator, and signal is along cable distribution to far-end.In discriminating place, the current signal of each bar cable is flow through in signal picker measurement, then goes out target cable according to the characteristic differentiation of signal.Signal generator and signal picker are all equipped with portable enclosure, are convenient for carrying and use.
Signal generator comprises control of discharge unit, power input unit, injection switch, and power input unit, injection switch are all connected with control of discharge unit.Control of discharge unit comprises impulse generating unit, pulsed capacitance, ADC voltage detection unit, signal amplification unit, signal output unit, impulse generating unit is connected with described pulsed capacitance, pulsed capacitance is connected with signal amplification unit, and it is in parallel with ADC voltage detection unit, signal amplification unit is connected with signal output unit, and power input unit and injection switch are all connected with impulse generating unit.Signal output unit ground connection, and be connected by crocodile clip with one end of cable under test.Impulse generating unit connects power light, injects pilot lamp, and impulse generating unit, pulsed capacitance, ADC voltage detection unit all connect run indicator.
Power input unit wherein also comprises power supply adaptor, rechargeable battery, power switch, and the 220VAC of input is converted to 24VDC by power supply adaptor, and then is rechargeable battery charging; Rechargeable battery by power switch for control of discharge unit provides low-voltage DC.Rechargeable battery is lithium ion battery, has constant-current charge, is full of automatic stop function.The low-voltage DC that power input unit provides enters impulse generating unit, directly high direct voltage is exported by the control of injecting switch, ADC voltage detection unit detects high direct voltage output valve in real time, and the high direct voltage of output is pulsed capacitance charging, provides the energy of cable discharge.This energy carries out suitable amplification through signal amplification unit, reaches the standard that can produce cable discharge.In operational process, also have power light, inject pilot lamp, run indicator in real time for operating personnel point out the running status of unit.
Signal picker comprises signal processing unit, power input unit, analog measurement unit, reset key, and power input unit, analog measurement unit, reset key are all connected with signal processing unit.Analog measurement unit comprises some acquisition channels, some current transformers, each acquisition channel is all connected with the cable line low tension switch being positioned at the cable other end by current transformer, and current transformer to be connected by crocodile clip the test result that this connection with physical contact obtains with cable line low tension switch more accurate.Signal processing unit is also connected with power lights, running indicator, stand by lamp.Acquisition channel wherein, described current transformer are equipped with 16.Current transformer is open-type current transformer, and no-load voltage ratio is respectively 200A/50mA and 100A/50mA, and the error that this current transformer produces in operational process is less, and can meet the demand of cable identification test, cost performance is higher.
Signal generation apparatus produces high-frequency characteristic sequence carrier current Injection Signal at certain cable latter end, signal pickup assembly is by the current signal of multiple each switches of current transformer synchronous acquisition of access different acquisition passage, and be input to the analog acquisition passage of harvester, if the stand by lamp of certain passage is bright, then illustrate that this channel acquisition is to characteristic signal, the current transformer of this acquisition channel fill switch and be switch corresponding to signal generation apparatus place cable.The synchronous triggering collection of high-frequency characteristic sequence carrier current Injection Signal FMAM special mechanism and two ends coordinates mechanism, add accurate algorithm process, various complicated occasion can being applied to, avoiding customer charge big ups and downs and the erroneous judgement of shoving instantaneously and may cause device and according to sentencing impact of closing a floodgate.
Use procedure:
Each wiring point recognition device being exposed to outer needs connection is all connected complete by wire, again by signal generator ground connection, access cable end piece respectively, and each switch respectively at cable line of each terminals in the analog measurement module of signal picker is connected.After careful inspection is errorless, opening signal generating means and signal pickup assembly switch, press the injection switch of signal generation apparatus, then unclamp, and signal generation apparatus starts to inject, and injects the bright expression of pilot lamp and inject successfully, when representing and can again input after extinguishing.Observation signal harvester alarm indicator, if illustrate this cable of this switch control rule when corresponding alarm indicator is bright; If what corresponding alarm indicator did not have bright this switch control rule of explanation is not this cable.
The power input unit of signal picker has a power control switch, power on and power-off for control device; Also there is the protective tube of 1A.After start signal collector, power lights Chang Liang, running indicator 1HZ glimmer, and stand by lamp often goes out, then equipment can normally run.When characteristic current signal being detected, stand by lamp Chang Liang, length carries out stand by lamp reset by unclamping after 2s reset key subsequently, can carry out Signal reception again.
The utility model not only can carry out individual event power taking, can also carry out alternate power taking, completes different identification demands.
Transmitted by signal generator, by the current signal of each switch of signal picker synchronous acquisition, find the corresponding relation of cable and switch, structure is simple, easy and simple to handle, more stable than the performance of contactless proving installation, test result is more accurate, maintenance process is without the need to frequent power failure, and guarantee in emergency circumstances to cut off problem cable line rapidly, accurately in fault or other, overhaul efficiency is high.
Claims (5)
1. a low-voltage cable recognition device, is characterized in that: comprise signal generator, signal picker;
Described signal generator comprises control of discharge unit, power input unit, injection switch, and described power input unit, injection switch are all connected with described control of discharge unit;
Described control of discharge unit comprises impulse generating unit, pulsed capacitance, ADC voltage detection unit, signal amplification unit, signal output unit, described impulse generating unit is connected with described pulsed capacitance, described pulsed capacitance is connected with described signal amplification unit, and it is in parallel with described ADC voltage detection unit, described signal amplification unit is connected with described signal output unit, and described power input unit and described injection switch are all connected with described impulse generating unit;
Described signal output unit ground connection, and be connected by one end of the wire with cable under test that are connected with crocodile clip;
Described signal picker comprises signal processing unit, power input unit, analog measurement unit, reset key, and described power input unit, analog measurement unit, reset key are all connected with described signal processing unit;
Described analog measurement unit comprises some acquisition channels, some current transformers, acquisition channel described in each is all connected with the cable line low tension switch being positioned at the described cable other end by described current transformer, and described current transformer is connected with described cable line low tension switch by crocodile clip.
2. a kind of low-voltage cable recognition device according to claim 1, is characterized in that: described acquisition channel, described current transformer are equipped with 16.
3. a kind of low-voltage cable recognition device according to claim 1, is characterized in that: described current transformer is open-type current transformer, and no-load voltage ratio is respectively 200A/50mA and 100A/50mA.
4. a kind of low-voltage cable recognition device according to claim 1, is characterized in that: described impulse generating unit connects power light, injects pilot lamp, and described impulse generating unit, pulsed capacitance, ADC voltage detection unit all connect run indicator.
5. a kind of low-voltage cable recognition device according to claim 1, is characterized in that: described signal processing unit is also connected with power lights, running indicator, stand by lamp respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453728.XU CN204758743U (en) | 2015-06-29 | 2015-06-29 | Low tension cable recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453728.XU CN204758743U (en) | 2015-06-29 | 2015-06-29 | Low tension cable recognition device |
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| CN204758743U true CN204758743U (en) | 2015-11-11 |
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| CN201520453728.XU Expired - Fee Related CN204758743U (en) | 2015-06-29 | 2015-06-29 | Low tension cable recognition device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551802A (en) * | 2020-05-06 | 2020-08-18 | 国网天津市电力公司 | Non-invasive low-voltage line switch identifier |
| CN113295976A (en) * | 2021-05-25 | 2021-08-24 | 广东电网有限责任公司 | Frequency-adjustable monopulse high-voltage signal generating device |
-
2015
- 2015-06-29 CN CN201520453728.XU patent/CN204758743U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111551802A (en) * | 2020-05-06 | 2020-08-18 | 国网天津市电力公司 | Non-invasive low-voltage line switch identifier |
| CN113295976A (en) * | 2021-05-25 | 2021-08-24 | 广东电网有限责任公司 | Frequency-adjustable monopulse high-voltage signal generating device |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |