CN101470939B - Method, system and apparatus for alarming cable theft - Google Patents
Method, system and apparatus for alarming cable theft Download PDFInfo
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- CN101470939B CN101470939B CN2007103044887A CN200710304488A CN101470939B CN 101470939 B CN101470939 B CN 101470939B CN 2007103044887 A CN2007103044887 A CN 2007103044887A CN 200710304488 A CN200710304488 A CN 200710304488A CN 101470939 B CN101470939 B CN 101470939B
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Abstract
The invention discloses a method for alarming that cables are stolen in the electronic burglarproof field, a system and a device thereof, which enable related personnel to judge that cables are stolen accurately in time. A method for processing power cut on a power supply side is applied in alarming that the cables are stolen and comprises the following steps: confirming that the power supply side stops supplying power, and sending an appointed signal to a power fetching side through a cable which is connected with the power fetching side in the power cut period by the power supply side. A method for processing power cut of the power fetching side is applied in alarming that the cables are stolen and comprises the following steps: detecting power cut by the power fetching side and sending alarming information when the power fetching side can not receive the appointed signal which is sent by the power supply side from the cable which is connected with the power supply side in the power cut period. The method enables the related personnel to judge that the cables are stolen accurately in real time.
Description
Technical field
The present invention relates to the electronic anti-theft field, particularly relate to the method, system and device of the stolen alarm of cable.
Background technology
Nearly 2 years, the larceny case that destroys " three " facility operations such as electric power, telecommunications, radio data system sharply increased, and the city and the combination area of city and country are developed in the crime region from the rural area, the normal operation of serious threat equipment.
When the cable of " three " facility is stolen, can only send the alarm that has a power failure at present, it is normal power failure that the related personnel can't distinguish, or cable is stolen.
For example: the alarm that has a power failure that remains that uploads to machine room after the base station power line is cut at present, what NOKIABSC equipment received that BTS uploads is that the alarm numbering is 7401 power failure alarm, thus machine room according to base station alarm information can't judge current be have a power failure or power lead stolen.At present existing network often has a plurality of base stations to have a power failure every day, think promptly and accurately the stolen difficulty of being with of judgement cable.
In sum, it is stolen that prior art can't make related personnel's judgement cable promptly and accurately.
Summary of the invention
The embodiment of the invention provides the method, system and device of the stolen alarm of cable, so that related personnel's judgement cable promptly and accurately is stolen.
The disposal route of a kind of power taking side outage of the embodiment of the invention is applied to the stolen alarm of cable, comprises the following steps:
Supply side is determined to stop power supply; Supply side is in outage, and every interval first duration sends to the power taking side by the cable that links to each other with the power taking side and specifies a specification signal, or continues to send specification signal to the power taking side;
The power taking side detects outage; The power taking side is judged to detect power-cut time from described power taking side between turnoff time, whether receive the specification signal first time that supply side sends by the cable that links to each other with supply side in second duration; If do not receive, then power taking side is sent warning information; Otherwise the power taking side judges that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, sends warning information.
The stolen warning system of a kind of cable of the embodiment of the invention comprises:
Supply side equipment is used to determine to stop power supply, and in outage, every interval first duration sends to the power taking side by the cable that links to each other with the power taking side and specifies a specification signal, or continues to send specification signal to the power taking side; The power taking side apparatus is used for detecting and determines current outage, and between turnoff time, judges to detect power-cut time from described power taking side, whether receives the specification signal first time that supply side sends by the cable that links to each other with supply side in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
A kind of supply side equipment of the embodiment of the invention comprises:
The power failure determining unit is used to determine to stop power supply, and sends trigger pip; The specification signal transmitting element comprises:
Signal generation subelement is used to generate power carrier signal, and exports as specification signal;
The first clock subelement is used for continuing trigger pip generation subelement and generates power carrier signal; Perhaps
Also comprise: the second clock subelement is used for every interval first duration trigger pip generation subelement and generates a power carrier signal;
The first coupling subelement, be used for when receiving the trigger pip that the power failure determining unit is sent, in outage, the specification signal of signal generation subelement output is inductively coupled on the described cable, send to the power taking side apparatus, whether indication power taking side apparatus receives the specification signal first time that supply side equipment sends from measuring power-cut time in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
A kind of power taking side apparatus of the embodiment of the invention comprises outage determining unit, receiving element and Alarm Unit, wherein:
The outage determining unit is used to detect and determines outage, and sends trigger pip; Receiving element comprises:
The second coupling subelement, be used for detecting power carrier signal on the described cable by inductive coupling, described power carrier signal is that supply side equipment is in the outage of determining to stop power supply, continue or every interval first duration sends, and be inductively coupled on the cable and send to the power taking side apparatus;
Receive subelement, be used for the power carrier signal on the described cable being received as specification signal by the second coupling subelement;
Alarm Unit is used between turnoff time, judges to detect power-cut time from described power taking side, and whether receiving element receives the specification signal first time that supply side sends in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
In the embodiment of the invention, after supply side is determined to stop power supply,, send specification signal to the power taking side by the cable that links to each other with the power taking side in outage.If belong to normal power failure, after then power taking side detects outage, between turnoff time, can receive the specification signal that supply side sends from the cable that links to each other with supply side, if cable is stolen, then the specification signal that sends of supply side can't arrive the power taking side by described cable, be after the power taking side detects outage, between turnoff time, can not receive the specification signal that supply side sends from the cable that links to each other with supply side, power taking this moment side is sent warning information, to notify the related personnel.Therefore, the present invention can distinguish normal power failure and the stolen outage that causes of cable, makes the judgement cable that the related personnel can be promptly and accurately stolen.
Description of drawings
Fig. 1 is the process method step process flow diagram that the supply side of the embodiment of the invention has a power failure;
Fig. 2 is the process method step process flow diagram of the power taking side outage of the embodiment of the invention;
Fig. 3 is the stolen warning system structural representation of the cable of the embodiment of the invention;
Fig. 4 is the structural representation of system embodiment 1 of the present invention;
Fig. 5 is the supply side device structure synoptic diagram of the embodiment of the invention;
Fig. 6 is the structural representation of the preferred embodiment of supply side equipment among the present invention;
Fig. 7 is the structural representation of another preferred embodiment of supply side equipment among the present invention;
Fig. 8 is the power taking side apparatus structural representation of the embodiment of the invention;
Fig. 9 is the structural representation of the preferred embodiment of power taking side apparatus among the present invention.
Embodiment
In order to make related personnel's judgement cable promptly and accurately stolen, the disposal route that the invention process provides a kind of supply side to have a power failure referring to shown in Figure 1, comprises the following steps step:
S11, supply side are determined to stop power supply.
S12, supply side send specification signal by the cable that links to each other with the power taking side to the power taking side in outage.
The disposal route that has a power failure with above-mentioned supply side is corresponding, and the invention process also provides a kind of disposal route of power taking side outage, referring to shown in Figure 2, comprises the following steps step:
S21, power taking side detect outage.
S22, power taking side when the cable that links to each other with supply side can not receive the specification signal that supply side sends, are sent warning information between turnoff time.
Below be described in further detail by two method embodiment.
After method embodiment 1, the power failure, supply side, as: the supply transformer side, continue to the power taking side, as: base station side sends specification signal, and this specification signal includes but not limited to power carrier signal (be example with the power carrier signal afterwards, repeat no more).
101, the supply transformer side is determined current stopping power supply.
102, the supply transformer side is after determining to stop power supply, and by the phase line of the cable that links to each other with base station side, continues to send power carrier signal to base station side immediately.
103, base station side detects current outage, can't carry out normal communication work.
104, because the cable between supply transformer side and the base station side may reach several kilometers, so consider the time delay of cable transmission power carrier signal, base station side can be set second duration, as: one minute, if detect power-cut time from base station side, base station side has been received power carrier signal from the phase line of this cable in one minute, judges that then current this cable is intact, does not do follow-up alarming processing; If detect power-cut time from base station side, base station side is not received power carrier signal from the phase line of this cable in one minute, judges that then cable is stolen, and then sends warning information.
Because hypothesis supply transformer side continues to send power carrier signal to base station side in the present embodiment, so detect power-cut time from base station side, base station side is after the phase line of this cable is received power carrier signal in one minute, should continue to receive power carrier signal from the phase line of this cable, when continuing to receive the process interruption of power carrier signal, should judge also that then cable is stolen, and then send warning information.
Described warning information is for example: base station side produces the low level alarm, by base station BTS (BaseTransceiver Station) dry contact external alarm port stolen alarm 7415 signals of cable is uploaded to switching centre's machine room.Can adopt the multiple alarm receiving equipment in switching centre's machine room,, thereby make that corresponding base station is stolen to the cable of transformer side as can be known immediately switching centre's machine room personnel on duty by the wherein one tunnel corresponding low level alarm that receives this base station, and improper power failure.
Transmit the low level alarm even without independent transmission line, also can warning information be sent to the designated communication terminal and/or networking reports by note MODEM, can comprise base station position information in the described warning information, so that related personnel location, this mode real-time is also higher, in general 5 seconds.Also can pass through wireless module, as warning information, dial the designated communication terminal with the voice recorded, as: dial 110 and/or dial maintainer's mobile phone, also can comprise base station position information in the described warning information, so that the related personnel location.
Further, base station side judges when cable is stolen, but the audible and visual alarm device in the interlock base station also, as: alarm loudspeaker, report automatically, thereby the psychology of thief is played fright pressure.
201, the supply transformer side is determined current stopping power supply.
202, the supply transformer side is after determining to stop power supply, and the phase line by the cable that links to each other with base station side sends power carrier signal for the first time to base station side immediately, and every afterwards interval first duration, as: sent a power carrier signal to base station side in one second.
203, base station side detects current outage, can't carry out normal communication work.
204, because the cable between supply transformer side and the base station side may reach several kilometers, so consider the time delay of cable transmission power carrier signal, base station side can be set second duration, as: one minute, if detect power-cut time from base station side, base station side has been received power carrier signal from the phase line of this cable in one minute, judges that then current this cable is intact, does not do follow-up alarming processing; If detect power-cut time from base station side, base station side is not received power carrier signal from the phase line of this cable in one minute, judges that then cable is stolen, and then sends warning information.
Because the every interval of hypothesis supply transformer side first duration sends a power carrier signal to base station side in the present embodiment, so detect power-cut time from base station side, base station side is after the phase line of this cable is received power carrier signal in one minute, should receive one time power carrier signal one second from every interval on the phase line of this cable, when one second is received a power carrier signal at not every interval, should judge also that then cable is stolen, and then send warning information.
Described warning information is for example: base station side produces the low level alarm, by base station BTS dry contact external alarm port stolen alarm 7415 signals of cable is uploaded to switching centre's machine room.Can adopt the multiple alarm receiving equipment in switching centre's machine room,, thereby make that corresponding base station is stolen to the cable of transformer side as can be known immediately switching centre's machine room personnel on duty by the wherein one tunnel corresponding low level alarm that receives this base station, and improper power failure.
Transmit the low level alarm even without independent transmission line, also can warning information be sent to the designated communication terminal and/or networking reports by note MODEM, can comprise base station position information in the described warning information, so that related personnel location, this mode real-time is also higher, in general 5 seconds.Also can pass through wireless module, as warning information, dial the designated communication terminal with the voice recorded, as: dial 110 and/or dial maintainer's mobile phone, can comprise base station position information in the described warning information, so that the related personnel location.
Further, base station side judges when cable is stolen, but the audible and visual alarm device in the interlock base station also, as: alarm loudspeaker, report automatically, thereby the psychology of thief is played fright pressure.
In order to make related personnel's judgement cable promptly and accurately stolen, the invention process provides a kind of cable stolen warning system, comprises referring to shown in Figure 3 it: by cable continuous supply side equipment 1 and power taking side apparatus 2.
Wherein supply side equipment 1, is used to determine to stop power supply, and in outage, sends specification signal by the cable that links to each other with power taking side apparatus 2 to power taking side apparatus 2.Further, supply side equipment 1 sends mode from specification signal to power taking side apparatus 2 sends specification signal for continuing to power taking side apparatus 2, and perhaps every interval first duration sends a specification signal to power taking side apparatus 2.
Wherein the power taking side apparatus 2, are used for detect determining current outage, and between turnoff time, when the cable that links to each other with supply side equipment 1 can not receive the specification signal that supply side equipment 1 sends, send warning information.Further, power taking side apparatus 2 judges that the trigger condition that can not receive specification signal and send warning information comprises: detect power-cut time from described power taking side apparatus 2, do not receive specification signal in second duration.Corresponding to the mode that power taking side apparatus 2 sends specification signal with supply side equipment 1, trigger condition also can comprise: if supply side equipment 1 continues to send specification signal, then power taking side apparatus 2 does not continue to receive specification signal after receiving the specification signal first time; If supply side equipment 1 sends specification signal at interval, then power taking side apparatus 2 is after receiving the specification signal first time, and not every interval first duration is received specification signal one time.
Below be described in further detail by a system embodiment.
After system embodiment 1, the power failure, supply side equipment, as: transformer continues to the power taking side apparatus, as: the base station sends specification signal, specifically referring to shown in Figure 4.
Transformer: increase a power carrier signal generator in transformer, when mains failure, this signal generator continues the output power carrier signal, and on the phase line through being inductively coupled to cable, arrives several kilometers outer base stations by the phase line transmission.
Base station: when power-off of base station, the power carrier signal of signal receiver in the base station on inductance detection and reception phase line, if detect power-cut time from this base station, at second duration, as: receive power carrier signal in one minute, and continue to receive power carrier signal afterwards, represent that then phase line is intact, and then cable is intact as can be known, and the warning circuit in the base station is failure to actuate, the output high level; Otherwise, the warning circuit output low level in the base station, with interlock audible and visual alarm device, and this low level uploads to machine room by the external alarm interface after light-coupled isolation, realizes the remote alarm that cable is stolen thus.
Further, signal sends and the power consumption of base station and raising antijamming capability in order to reduce, the circuit that ad hoc meter " receives and the control of transtation mission circuit duty ".Its principle is for detecting on the three-phase power line when testing circuit as if wherein any one when voltage is arranged, control circuit starts, control receives and the transtation mission circuit telltale is not worked, when testing circuit detects on the three-phase power line all no-voltage, transmission and receiving circuit telltale are just started working, and detect the power carrier signal that whether has transformer side to transmit on the phase line simultaneously.If it is intact to receive the signal indication cable, this moment, warning circuit was not worked; If can not receive signal then, represent that then cable interrupts through after 1 minute the affirmation, warning circuit work this moment, warning information is uploaded to central machine room BSC by BTS.
In order to make related personnel's judgement cable promptly and accurately stolen, the invention process provides a kind of supply side equipment 1, and referring to shown in Figure 5, it comprises: power failure determining unit 11 and specification signal transmitting element 12.
Power failure determining unit 11 is used to determine to stop power supply, and sends trigger pip.
Specification signal transmitting element 12 is used for triggering when receiving the trigger pip that power failure determining unit 11 is sent, and in outage, sends specification signal by the cable that links to each other with the power taking side apparatus to the power taking side apparatus.
As the preferred embodiment of a supply side equipment, referring to shown in Figure 6, it comprises: power failure determining unit 11 and specification signal transmitting element 12 comprise the signal generation subelement 121 and the first coupling subelement 122 again in the specification signal transmitting element 12; Further also can comprise the first clock subelement 123 in the specification signal transmitting element 12.
Power failure determining unit 11 is used to determine to stop power supply, and sends trigger pip.
Specification signal transmitting element 12 is used for triggering when receiving the trigger pip that power failure determining unit 11 is sent, and in outage, sends specification signal by the cable that links to each other with the power taking side apparatus to the power taking side apparatus.
Signal generation subelement 121 wherein is used to generate power carrier signal, and exports as specification signal.
The first coupling subelement 122 wherein is used for the specification signal of signal generation subelement 121 outputs is inductively coupled to described cable, sends to the power taking side apparatus.
The first clock subelement 123 wherein is used for continuing trigger pip generation subelement 121 and generates power carrier signal.
As the preferred embodiment of another supply side equipment, referring to shown in Figure 7, it comprises: power failure determining unit 11 and specification signal transmitting element 12 comprise the signal generation subelement 121 and the first coupling subelement 122 again in the specification signal transmitting element 12; Further also can comprise second clock subelement 124 in the specification signal transmitting element 12.
Power failure determining unit 11 is used to determine to stop power supply, and sends trigger pip.
Specification signal transmitting element 12 is used for triggering when receiving the trigger pip that power failure determining unit 11 is sent, and in outage, sends specification signal by the cable that links to each other with the power taking side apparatus to the power taking side apparatus.
Signal generation subelement 121 wherein is used to generate power carrier signal, and exports as specification signal.
The first coupling subelement 122 wherein is used for the specification signal of signal generation subelement 121 outputs is inductively coupled to described cable, sends to the power taking side apparatus.
Second clock subelement 124 wherein is used for every interval first duration trigger pip generation subelement 121 and generates a power carrier signal.
Corresponding with above-mentioned supply side equipment, the embodiment of the invention also provides a kind of power taking side apparatus 2, and referring to shown in Figure 8, it comprises: outage determining unit 21, receiving element 22 and Alarm Unit 23.
Receiving element 22 is used for triggering when receiving the trigger pip that outage determining unit 21 is sent, and receives the specification signal that supply side equipment sends from the cable that links to each other with supply side equipment.
As the preferred embodiment of a power taking side apparatus, referring to shown in Figure 9, it comprises: outage determining unit 21, receiving element 22 and Alarm Unit 23 comprise the second coupling subelement 221 again and receive subelement 222 in the receiving element 22.
Receiving element 22 is used for triggering when receiving the trigger pip that outage determining unit 21 is sent, and receives the specification signal that supply side equipment sends from the cable that links to each other with supply side equipment.
The second coupling subelement 221 wherein is used for detecting power carrier signal on the described cable by inductive coupling.
To sum up, in the embodiment of the invention, after supply side is determined to stop power supply,, send specification signal to the power taking side by the cable that links to each other with the power taking side in outage.If belong to normal power failure, after then power taking side detects outage, between turnoff time, can receive the specification signal that supply side sends from the cable that links to each other with supply side, if cable is stolen, then the specification signal that sends of supply side can't arrive the power taking side by described cable, be after the power taking side detects outage, between turnoff time, can not receive the specification signal that supply side sends from the cable that links to each other with supply side, power taking this moment side is sent warning information, to notify the related personnel.Therefore, the present invention can distinguish normal power failure and the stolen outage that causes of cable, makes the judgement cable that the related personnel can be promptly and accurately stolen.
Further, guarantee the anti-interference of signal, can send specification signal to the power taking side at interval after supply side is determined to stop power supply for the conservation of power resource.
And the invention provides multiple alarm mode, can satisfy the demand of various actual environments.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (7)
1. the disposal route of a power taking side outage is applied to the stolen alarm of cable, it is characterized in that, comprises the following steps:
Supply side is determined to stop power supply;
Supply side is in outage, and every interval first duration sends to the power taking side by the cable that links to each other with the power taking side and specifies a specification signal, or continues to send specification signal to the power taking side;
The power taking side detects outage;
The power taking side is judged to detect power-cut time from described power taking side between turnoff time, whether receive the specification signal first time that supply side sends by the cable that links to each other with supply side in second duration;
If do not receive, then power taking side is sent warning information;
Otherwise the power taking side judges that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, sends warning information.
2. the method for claim 1 is characterized in that, it is one of following that the mode that described power taking side is sent warning information comprises at least:
As warning information, and send to alarm equipment with the low level alarm signal;
As warning information, and send to the designated communication terminal with note;
As warning information, and dial the designated communication terminal with the voice recorded.
3. the method for claim 1 is characterized in that, comprises the positional information of this power taking side in the warning information that described power taking side is sent.
4. the warning system that cable is stolen is characterized in that, comprising:
Supply side equipment is used to determine to stop power supply, and in outage, every interval first duration sends to the power taking side by the cable that links to each other with the power taking side and specifies a specification signal, or continues to send specification signal to the power taking side;
The power taking side apparatus is used for detecting and determines current outage, and between turnoff time, judges to detect power-cut time from described power taking side, whether receives the specification signal first time that supply side sends by the cable that links to each other with supply side in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
5. system as claimed in claim 4 is characterized in that, comprises the positional information of this power taking side apparatus in the warning information that described power taking side apparatus sends.
6. a supply side equipment is characterized in that, comprising:
The power failure determining unit is used to determine to stop power supply, and sends trigger pip;
The specification signal transmitting element comprises:
Signal generation subelement is used to generate power carrier signal, and exports as specification signal;
The first clock subelement is used for continuing trigger pip generation subelement and generates power carrier signal; Perhaps
Also comprise: the second clock subelement is used for every interval first duration trigger pip generation subelement and generates a power carrier signal;
The first coupling subelement, be used for when receiving the trigger pip that the power failure determining unit is sent, in outage, the specification signal of signal generation subelement output is inductively coupled on the described cable, send to the power taking side apparatus, whether indication power taking side apparatus receives the specification signal first time that supply side equipment sends from measuring power-cut time in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
7. a power taking side apparatus is characterized in that, comprises outage determining unit, receiving element and Alarm Unit, wherein:
The outage determining unit is used to detect and determines outage, and sends trigger pip;
Receiving element comprises:
The second coupling subelement, be used for detecting power carrier signal on the described cable by inductive coupling, described power carrier signal is that supply side equipment is in the outage of determining to stop power supply, continue or every interval first duration sends, and be inductively coupled on the cable and send to the power taking side apparatus;
Receive subelement, be used for the power carrier signal on the described cable being received as specification signal by the second coupling subelement;
Alarm Unit is used between turnoff time, judges to detect power-cut time from described power taking side, and whether receiving element receives the specification signal first time that supply side sends in second duration; If do not receive, then send warning information; Otherwise, judge that not every interval first duration receives specification signal one time, or when not continuing to receive specification signal, send warning information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103044887A CN101470939B (en) | 2007-12-28 | 2007-12-28 | Method, system and apparatus for alarming cable theft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103044887A CN101470939B (en) | 2007-12-28 | 2007-12-28 | Method, system and apparatus for alarming cable theft |
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| Publication Number | Publication Date |
|---|---|
| CN101470939A CN101470939A (en) | 2009-07-01 |
| CN101470939B true CN101470939B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103044887A Active CN101470939B (en) | 2007-12-28 | 2007-12-28 | Method, system and apparatus for alarming cable theft |
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| CN (1) | CN101470939B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710028B (en) * | 2012-06-18 | 2014-06-04 | 浙江方大智控科技有限公司 | Cable theft-proof monitoring system based on passive carrier communication |
| CN104049188A (en) * | 2014-06-18 | 2014-09-17 | 华为技术有限公司 | Electric shock alarming method and equipment |
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| CN2177971Y (en) * | 1993-12-10 | 1994-09-21 | 贺成亮 | Anti-theft alarm device for electric power facilities |
| CN2567587Y (en) * | 2002-07-12 | 2003-08-20 | 邓志辉 | Anti-theft alarm device for power cable |
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| CN2864834Y (en) * | 2005-12-02 | 2007-01-31 | 徐建刚 | Cable anti-theft and alarming device |
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| CN2177971Y (en) * | 1993-12-10 | 1994-09-21 | 贺成亮 | Anti-theft alarm device for electric power facilities |
| CN2567587Y (en) * | 2002-07-12 | 2003-08-20 | 邓志辉 | Anti-theft alarm device for power cable |
| CN2692755Y (en) * | 2003-07-28 | 2005-04-13 | 马尚华 | Power line carrier anti-theft alarm |
| CN2864834Y (en) * | 2005-12-02 | 2007-01-31 | 徐建刚 | Cable anti-theft and alarming device |
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| CN101470939A (en) | 2009-07-01 |
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