CN105896526A - Cable safety protection method, cable safety protection device and cable - Google Patents
Cable safety protection method, cable safety protection device and cable Download PDFInfo
- Publication number
- CN105896526A CN105896526A CN201610223409.9A CN201610223409A CN105896526A CN 105896526 A CN105896526 A CN 105896526A CN 201610223409 A CN201610223409 A CN 201610223409A CN 105896526 A CN105896526 A CN 105896526A
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- cable
- voltage
- input voltage
- input
- load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a cable safety protection method. The method comprises steps: input voltage of the cable is detected; when the input voltage is detected not to be non-standard input voltage, cable connection is cutoff via a passive load module, and preset voltage is selected to be cut in the cable and the load; input current of the cable is detected; and according to the detected input current and the preset voltage, the safety state of the cable is analyzed. Correspondingly, the invention also discloses a cable safety protection device and a cable. According to the technical scheme of the invention, the safety detection effects of the cable are enhanced, the safety and the reliability of the cable are improved, and user experience for cable safety protection is enhanced.
Description
Technical field
The present invention relates to electrical equipment technical field, particularly relate to the method for security protection of a kind of cable, dress
Put and cable.
Background technology
Existing cable generally uses the resonance method, ohmic leakage method etc. to have by wireless module, carrier communication module
Sources traffic mechanism carries out monitoring safety status, but structure complexity is difficult to install, and relatively costly, lightning-arrest effect
The most poor, the most only could normal work when input voltage is standard input voltage such as AC220V
Make, be changed to low voltage or power-off (such as road lighting cable disconnects daytime) once input voltage, and
The safeguard protection of cable can not be have impact on by detection amperometry safe condition.
Summary of the invention
In consideration of it, the present invention provides the method for security protection of a kind of cable, device and cable, solve existing
Cable is relatively low at input voltage or cannot detect safe condition during power-off and safety detection cost is high, lightning-arrest
The technical problem that effect is poor.
According to one embodiment of present invention, it is provided that the method for security protection of a kind of cable, including: detection
The input voltage of cable；Passive load is passed through when described input voltage non-standard input voltage being detected
Module disconnects cable and connects and select with load, described cable is connected predeterminated voltage；Detect described cable
Input current；And analyze described cable according to the described input current detected and described predeterminated voltage
Safe condition.
Optionally, described passive load module selects cable is switched on or switched off load according to input voltage.
Optionally, described passive load module includes supply voltage device, relay and load, when input electricity
When pressure is standard input voltage, described supply voltage device input voltage control described relay redirect make described
Load disconnects cable；When input voltage non-standard input voltage, the input of described supply voltage device is preset
Voltage and control described relay do not redirect and by load connect cable.
Optionally, described passive load module also includes inputting overvoltage protection delayed switch module, uses
In when described relay redirects by input voltage clamper to described predeterminated voltage.
Optionally, the method for security protection of described cable also includes: when detecting that described input voltage is mark
The input current of described cable is detected during quasi-input voltage；According to the described input current detected and input
The safe condition of cable described in voltage analysis.
According to another embodiment of the invention, it is provided that the safety guard of a kind of cable, including: electricity
Pressure detection module, for detecting the input voltage of cable；Current detection module, for detecting the defeated of cable
Enter electric current；Passive load module, for detecting the input voltage of cable also when described voltage detection module
Disconnect cable during non-standard input voltage connect and select with load, cable is connected predeterminated voltage；And peace
Complete analysis module, for the input electricity detected according to described voltage detection module and current detection module
Pressure, the safe condition of input current analysis cable.
Optionally, described passive load module selects cable is switched on or switched off load according to input voltage.
Optionally, described passive load module includes supply voltage device, relay and load, when input electricity
When pressure is standard input voltage, described supply voltage device input voltage control described relay redirect make described
Load disconnects cable；When input voltage non-standard input voltage, the input of described supply voltage device is preset
Voltage and control described relay do not redirect and by load connect cable.
Optionally, described passive load module also includes inputting overvoltage protection delayed switch module, uses
In when described relay redirects by input voltage clamper to described predeterminated voltage.
According to still another embodiment of the invention, it is provided that a kind of cable, described cable includes above-mentioned cable
Safety guard.
Compared with prior art, the method for security protection of cable, device and the cable that the present invention provides, when
Disconnect cable by passive load module when described input voltage non-standard input voltage being detected to connect
And select with load described cable connected predeterminated voltage, and then according to the described input current detected with
Described predeterminated voltage analyzes the safe condition of described cable, it is achieved that under non-standard input voltage or cable
The safeguard protection of cable during disconnection, improves the safety detection effect of cable, and passive load module is not simultaneously
Need lightning-arrest design, improve the security and the reliability of cable, improve the user's body of cable safeguard protection
Test.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below
The required accompanying drawing used is briefly described.It should be evident that the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the method for security protection of cable in one embodiment of the invention.
Fig. 2 is the structural representation of passive load module in one embodiment of the invention.
Fig. 3 is the detailed circuit schematic of passive load module in one embodiment of the invention.
Fig. 4 is the schematic flow sheet of the method for security protection of cable in another embodiment of the present invention.
Fig. 5 is the structural representation of the safety guard of cable in one embodiment of the invention.
Detailed description of the invention
Technical scheme is made the most more detailed with detailed description of the invention below in conjunction with the accompanying drawings
Describe.Obviously, described embodiment is only a part of embodiment of the present invention rather than whole
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained on the premise of Dong, all should belong to the scope of protection of the invention.
In describing the invention, it is to be understood that term " first ", " second " etc. are only used for describing
Purpose, and it is not intended that indicate or hint relative importance.In describing the invention, explanation is needed
, unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, example
As, can be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.Right
For those of ordinary skill in the art, above-mentioned term can be understood in the present invention in conjunction with concrete condition
Concrete meaning.Additionally, in describing the invention, except as otherwise noted, " multiple " are meant that two
Individual or two or more.
In flow chart or at this, any process described otherwise above or method description are construed as,
Represent the executable instruction including one or more step for realizing specific logical function or process
The module of code, fragment or part, and the scope of the preferred embodiment of the present invention includes other
Realize, wherein can not by shown or discuss order, including according to involved function by substantially with
Time mode or in the opposite order, perform function, this should be led by technology belonging to embodiments of the invention
The technical staff in territory is understood.
Fig. 1 is the schematic flow sheet of the method for security protection of cable in one embodiment of the invention.As schemed
Show, the method for security protection of described cable, including:
Step S101: the input voltage of detection cable.
In the present embodiment, first detect the input voltage of cable, judge according to the input voltage detected
The state of cable, and then select corresponding safe condition detection mode.
Step S102: when described input voltage non-standard input voltage being detected by passive load mould
Block disconnects cable and connects and select with load, described cable is connected predeterminated voltage.
Seeing Fig. 2 and Fig. 3, in the present embodiment, being provided previously by one can select electricity according to input voltage
Cable is switched on or switched off the passive load module 30 of load, by its live wire end L with described cable and zero line side
N connects.As it can be seen, described passive load module 30 includes supply voltage device 301, relay 302 and
Load 303.In the present embodiment, described passive load module 30 also include electric fuse F2, rectifier bridge D2,
Input overvoltage protection delayed switch module and electric fuse F1.Described electric fuse F2 is arranged on described
Cable input live wire end, is used for preventing described passive load module 30 internal fault from causing electric network fault.Institute
State electric fuse F1 and be arranged on described load 30 outfan, be used for preventing described load 303 from damaging and cause electrical network
Fault.Described rectifier bridge D2 be arranged on described mains transformer 301 outfan and with described relay 302
Input connects, described relay 302 outfan and described input overvoltage protection delayed switch module
Connecting, described input overvoltage protection delayed switch module, load 303 and described electric fuse F1 are successively
It is connected in series.
In the present embodiment, disconnect as input voltage non-standard input voltage AC220V, even cable
Time, described supply voltage device 301 is at input predeterminated voltage AC24V Non voltage output, it is impossible to drive institute
State relay 302 to redirect, cable is connected in described load 303.Described cable is road when AC24V low pressure
Lamp does not works, but the access of described load 303 makes described cable have electric current passes through.
Step S103: detect the input current of described cable.
Step S104: analyze described cable according to the described input current detected and described predeterminated voltage
Safe condition.
In the secure state process analyzing described cable, when input current exceedes preset range, then sentence
There is potential safety hazard in fixed described cable, the most stolen or open failure, and then can carry out the most emergent repairing
Multiple process.
In the method for security protection of the cable of the present embodiment, when described input voltage non-standard being detected
Disconnect cable by passive load module during input voltage connect and select to connect described cable with load
Predeterminated voltage, and then analyze described cable according to the described input current detected and described predeterminated voltage
Safe condition, it is achieved that the safeguard protection of cable under non-standard input voltage or when cable disconnects, promotes
The safety detection effect of cable, passive load module need not lightning-arrest design simultaneously, improves cable
Security and the reliability, improves the Consumer's Experience of cable safeguard protection.
Seeing Fig. 4, another embodiment of the present invention also provides for the method for security protection of a kind of cable.As schemed
Show, the method for security protection of described cable, including:
Step S401: the input voltage of detection cable.
Step S402: when detecting that described input voltage detects the defeated of described cable when being standard input voltage
Enter electric current.
Step S403: analyze the safety of described cable according to the described input current detected and input voltage
State.
In the secure state process analyzing described cable, when described input voltage, input current exceed pre-
If during scope, then judge that described cable exists potential safety hazard, the most stolen or open failure, and then can enter
The corresponding lash-up recovering of row processes.
In the present embodiment, when detecting that input voltage is standard input voltage AC220V, described electricity
Source voltage device 301 and rectifier bridge D2 export V+=12V voltage, control described relay 302 and redirect described
Load 303 disconnects with described cable, to prevent the AC220V high voltage of described cable by described load 303
Damage.In the present embodiment, time delay is had to cause described cable due to the voltage jump of described relay 302
Voltage higher than AC24V, described input overvoltage protection delayed switch module can be by described relay
The input voltage clamper that 302 redirect is to described predeterminated voltage AC24V.
In the method for security protection of the cable of the present embodiment, when detecting that described input voltage is that standard is defeated
When entering voltage, passive load module disconnects the connection of described cable and load, and then according to described in detecting
Input current and input voltage analyze the safe condition of described cable, it is achieved that under standard input voltage,
The safeguard protection of cable, passive load module need not lightning-arrest design simultaneously, improve cable safety and
Reliability, improves the Consumer's Experience of cable safeguard protection.
Fig. 5 is the structural representation of the safety guard 100 of cable in one embodiment of the invention.Such as figure
Shown in, the safety guard 100 of described cable, including the voltage detection module 10 being sequentially connected with, electricity
Stream detection module 20, passive load module 30 and safety analysis module 40.
Wherein, described voltage detection module 10 is for detecting the input voltage of cable, described current detecting mould
Block 20 is for detecting the input current of cable.In the present embodiment, according to described voltage detection module 10
The input voltage detected judges the state of cable, and then selects corresponding safe condition detection mode, and
The input current detected according to described current detection module 20 can analyze the safe condition of described cable.
Described passive load module 30 for detecting the input electricity of cable when described voltage detection module 10
Disconnect cable when pressure non-standard input voltage connect and select with load, cable is connected predeterminated voltage.?
In the present embodiment, cable can be switched on or switched off negative according to input voltage selection by described passive load module 30
Carry, it is connected with the live wire end L and zero line side N of described cable.Described passive load module 30 includes
Supply voltage device 301, relay 302 and load 303.In the present embodiment, described passive load module
30 also include electric fuse F2, rectifier bridge D2, input overvoltage protection delayed switch module and insurance
Silk F1.Described electric fuse F2 is arranged on described cable input live wire end, is used for preventing described passive load
Module 30 internal fault causes electric network fault.Described electric fuse F1 is arranged on described load 30 outfan, uses
Electric network fault is caused in preventing described load 303 from damaging.Described rectifier bridge D2 is arranged on described power supply transformation
Device 301 outfan is also connected with described relay 302 input, and described relay 302 outfan is with described
Input overvoltage protection delayed switch module connects, described input overvoltage protection delayed switching molding
Block, load 303 and described electric fuse F1 are sequentially connected in series.
In the present embodiment, the input voltage detected when described voltage detection module 10 non-standard input
When voltage AC220V, even cable disconnect, described supply voltage device 301 is at input predeterminated voltage AC24V
And Non voltage output, it is impossible to drive described relay 302 to redirect, cable is connected in described load 303.Institute
State cable street lamp when AC24V low pressure not work, but the access of described load 303 makes described cable have electricity
Stream passes through.
Described safety analysis module 40 detects according to described voltage detection module 10 and current detection module 20
The input voltage that arrives, the safe condition of input current analysis cable.Specifically, described cable is being analyzed
In secure state process, when described input voltage, input current exceed preset range, then judge described
There is potential safety hazard in cable, the most stolen or open failure, and then can carry out corresponding lash-up recovering process.
In the safety guard 100 of the cable of the present embodiment, when described voltage detection module 10 detects
Connect also to disconnecting cable by passive load module 30 when described input voltage non-standard input voltage
Select with load 303, described cable is connected predeterminated voltage, and then examine according to described current detection module 20
The described input current measured and described predeterminated voltage analyze the safe condition of described cable, it is achieved that non-
Under standard input voltage or cable disconnect time cable safeguard protection, improve cable safety detection effect
Really, passive load module 30 need not lightning-arrest design simultaneously, improves the security and the reliability of cable, carries
Rise the Consumer's Experience of cable safeguard protection.
In an alternative embodiment of the invention, detect that input voltage is standard when described voltage detection module 10
During input voltage AC220V, described supply voltage device 301 and rectifier bridge D2 export V+=12V voltage, control
Make described relay 302 and redirect described load 303 and the disconnection of described cable, to prevent described cable
Described load 303 is damaged by AC220V high voltage.In the present embodiment, due to described relay 302
Voltage jump has time delay to cause the voltage of described cable higher than AC24V, and described input overvoltage protection powers on
The input voltage clamper that described relay 302 can be redirected by delay switch module is to described predeterminated voltage
AC24V。
In the safety system 100 of the cable of the present embodiment, when described voltage detection module 10 detects
To described input voltage be standard input voltage time passive load module 30 disconnect described cable with load 303
Connection, described safety analysis module 40 analyzes institute according to the described input current detected and input voltage
State the safe condition of cable, it is achieved that under standard input voltage, the safeguard protection of cable, the most passive
Load blocks 30 need not lightning-arrest design, improves the security and the reliability of cable, improves cable safety
The Consumer's Experience of protection.
In still another embodiment of the process, also providing for a kind of cable, described cable includes above-mentioned cable
Safety guard 100, improves the safety detection effect of cable, improves the safety of cable with reliable
Property, improve the Consumer's Experience of cable safeguard protection.
Should be appreciated that each several part of the present invention can use hardware, software, firmware or combinations thereof to come in fact
Existing.In the above-described embodiment, multiple steps or method can be with storing in memory and by suitably
Software or firmware that instruction executing device performs realize.Such as, if realized with hardware, with separately
As in one embodiment, can come with any one in following technology well known in the art or their combination
Realize: there is the discrete logic of logic gates for data signal realizes logic function, tool
Having the special IC of suitable combination logic gate circuit, programmable gate array (PGA), scene can
Programming gate array (FPGA) etc..
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ",
" concrete example " or " some examples " etc. describe the concrete spy meaning to combine this embodiment or example description
Levy, structure, material or feature are contained at least one embodiment or the example of the present invention.In this theory
In bright book, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And,
Specific features, structure, material or the feature described can be in any one or more embodiments or show
Example combines in an appropriate manner.
Although an embodiment of the present invention has been shown and described, those of ordinary skill in the art can manage
Solve: in the case of without departing from the principle of the present invention and objective, these embodiments can be carried out multiple change
Changing, revise, replace and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. the method for security protection of a cable, it is characterised in that including:
The input voltage of detection cable；
When described input voltage non-standard input voltage being detected, disconnect electricity by passive load module
Cable connects and selects with load, described cable is connected predeterminated voltage；
Detect the input current of described cable；And
The safe condition of described cable is analyzed according to the described input current detected and described predeterminated voltage.
2. the method for security protection of cable as claimed in claim 1, it is characterised in that described passive negative
Carry module to select cable is switched on or switched off load according to input voltage.
3. the method for security protection of cable as claimed in claim 2, it is characterised in that described passive negative
Carry module and include supply voltage device, relay and load, when input voltage is standard input voltage, institute
State supply voltage device input voltage control described relay redirect make described load disconnect cable；When input electricity
When pressure non-standard input voltage, described supply voltage device input predeterminated voltage also controls described relay not
Redirect and cable is connected in load.
4. the method for security protection of cable as claimed in claim 3, it is characterised in that described passive negative
Carrying module also to include inputting overvoltage protection delayed switch module, being used for when described relay redirects will
Input voltage clamper is to described predeterminated voltage.
5. the method for security protection of cable as claimed in claim 1, it is characterised in that also include:
When detecting that described input voltage detects the input current of described cable when being standard input voltage；
The safe condition of described cable is analyzed according to the described input current detected and input voltage.
6. the safety guard of a cable, it is characterised in that including:
Voltage detection module, for detecting the input voltage of cable；
Current detection module, for detecting the input current of cable；
Passive load module, for detecting the input voltage of cable nonstandard when described voltage detection module
Disconnect cable during quasi-input voltage connect and select with load, cable is connected predeterminated voltage；And
Safety analysis module, defeated for detect according to described voltage detection module and current detection module
Enter voltage, the safe condition of input current analysis cable.
7. the safety guard of cable as claimed in claim 6, it is characterised in that described passive negative
Carry module to select cable is switched on or switched off load according to input voltage.
8. the safety guard of cable as claimed in claim 7, it is characterised in that described passive negative
Carry module and include supply voltage device, relay and load, when input voltage is standard input voltage, institute
State supply voltage device input voltage control described relay redirect make described load disconnect cable；When input electricity
When pressure non-standard input voltage, described supply voltage device input predeterminated voltage also controls described relay not
Redirect and cable is connected in load.
9. the safety guard of cable as claimed in claim 8, it is characterised in that described passive negative
Carrying module also to include inputting overvoltage protection delayed switch module, being used for when described relay redirects will
Input voltage clamper is to described predeterminated voltage.
10. a cable, it is characterised in that described cable includes as described in any one of claim 6 to 9
The safety guard of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223409.9A CN105896526B (en) | 2016-04-12 | 2016-04-12 | Method for security protection, device and the cable of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610223409.9A CN105896526B (en) | 2016-04-12 | 2016-04-12 | Method for security protection, device and the cable of cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105896526A true CN105896526A (en) | 2016-08-24 |
| CN105896526B CN105896526B (en) | 2019-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610223409.9A Active CN105896526B (en) | 2016-04-12 | 2016-04-12 | Method for security protection, device and the cable of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896526B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170106A (en) * | 2011-02-28 | 2011-08-31 | 中国北方车辆研究所 | Security protection method under vehicle high-voltage power supply system |
| CN204649895U (en) * | 2015-05-29 | 2015-09-16 | 国家电网公司 | Cable monitoring system |
| CN205027858U (en) * | 2015-10-12 | 2016-02-10 | 国家电网公司 | Special fault indicator of high -tension transmission net cable run |
-
2016
- 2016-04-12 CN CN201610223409.9A patent/CN105896526B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170106A (en) * | 2011-02-28 | 2011-08-31 | 中国北方车辆研究所 | Security protection method under vehicle high-voltage power supply system |
| CN204649895U (en) * | 2015-05-29 | 2015-09-16 | 国家电网公司 | Cable monitoring system |
| CN205027858U (en) * | 2015-10-12 | 2016-02-10 | 国家电网公司 | Special fault indicator of high -tension transmission net cable run |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105896526B (en) | 2019-07-23 |
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Effective date of registration: 20220119 Address after: 276000 Huaxia Road 106, Linyi Economic and Technological Development Zone, Shandong Province Patentee after: Shandong Shuangyue Cable Group Co.,Ltd. Address before: 276000 Longhu Software Park, 279 shuangyueyuan Road, high tech Industrial Development Zone, Linyi City, Shandong Province Patentee before: Linyi Longruan Information Technology Co.,Ltd. |