CN102074087A - Anti-theft device and anti-theft method of tower pole cable - Google Patents
Anti-theft device and anti-theft method of tower pole cable Download PDFInfo
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- CN102074087A CN102074087A CN2010101575830A CN201010157583A CN102074087A CN 102074087 A CN102074087 A CN 102074087A CN 2010101575830 A CN2010101575830 A CN 2010101575830A CN 201010157583 A CN201010157583 A CN 201010157583A CN 102074087 A CN102074087 A CN 102074087A
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- tower bar
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- theft
- erecting frame
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G2200/00—Indexing scheme relating to installation of electric cables or lines covered by H02G
- H02G2200/10—Prevention of theft of valuable metals
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Abstract
The invention relates to an anti-theft device of a tower pole cable. The anti-theft device comprises a power source for supplying power to the anti-theft device, a control module, a camera module, a transmission module and a sensor module connected with the control module, wherein the camera module and the transmission module are respectively connected with the control module; the horizontal induction angle of the sensor module is 360 degrees, and the sensor module is arranged at the middle part of a tower pole for supporting the tower pole cable. The invention further discloses an anti-theft method of the tower pole cable. The anti-theft device and anti-theft method of the tower pole cable have the beneficial effects that as the sensor module with the horizontal detection angle of 360 degrees is arranged at the middle part of the tower pole for the tower pole cable, suspicion of theft can be basically judged when a person passes the area, thus avoiding false alarm, achieving higher accuracy and giving an alarm before theft (the tower pole cable is cut off).
Description
Technical field
The present invention relates to the electric power transfer field, more particularly, relate to a kind of tower bar cable theft-prevention device and method.
Background technology
Usually, on built on stilts cable, there is not antitheft measure to take substantially.Even small part is taked some simple measures, but all be after theft takes place, just to send alerting signal, for example, when this cable has been cut off, just give a warning.But, since built on stilts line of electric force the path of process longer, the location is difficulty comparatively, even the location, the time that need be on the scene is also longer.Like this, common situation is not only effectively to prevent the generation of theft, simultaneously, also is unfavorable for very much investigating thief afterwards.And usually tower bar cable is stolen, can have influence on the normal life of people this zone in again, therefore, just gives the alarm before theft is implemented and takes certain technical measures to keep thief and implement the evidence of the theft very necessity that just becomes.
Summary of the invention
The technical problem to be solved in the present invention is, the defective at the above-mentioned time of fire alarming of prior art lags behind provides a kind of a kind of tower bar cable theft-prevention device and method that just can find and produce alarm signal when theft is about to implement.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of tower bar cable theft-prevention device, be included as the power supply, control module of described anti-theft device power supply, photographing module and the transport module that is connected with described control module respectively, it is characterized in that, also comprise be connected with described control module, its level induction angle is the sensor assemblies of 360 degree, described sensor assembly is arranged on the tower bar middle part of supporting described tower bar cable.
In tower bar cable theft-prevention device of the present invention, described sensor assembly comprises and is used to surround and be installed in the erecting frame on the described tower bar and is arranged in the described erecting frame or a plurality of sensor units on the erecting frame, level emission/the receive direction of described sensor unit along described erecting frame away from described tower bar, the horizontal emission direction of described a plurality of sensor units keeps setting angle, is 360 degree after the level detection angle stack of described a plurality of sensor units.
In tower bar cable theft-prevention device of the present invention, described sensor unit comprises infrared sensor unit, ultrasonic sensor unit or microwave remote sensor unit.
In tower bar cable theft-prevention device of the present invention, described erecting frame comprises that two are shaped as the circular shape part, is the circle of a hollow after its assembling, and the Outside Dimensions of described hollow space and described tower bar is suitable.
In tower bar cable theft-prevention device of the present invention, described erecting frame also comprises the fastener that is used to be fixed on the described tower bar.
In tower bar cable theft-prevention device of the present invention, described sensor unit comprises 2 or 3, described each sensor unit is horizontally disposed with on described erecting frame, its transmit direction along described erecting frame radially away from described tower bar, the transmit direction of adjacent sensors unit have 180 the degree or 120 the degree horizontal sextant angles.
In tower bar cable theft-prevention device of the present invention, described power supply is included as the accumulator of described anti-theft device each several part power supply and is connected, is the photovoltaic conversion equipment of described charge in batteries with described accumulator.
In tower bar cable theft-prevention device of the present invention, described transport module is included in the following data transmission that described control module is exported of described control module control to the GPRS module that is arranged on the designated terminal in the described transport module; Described photographing module is included in described control module control and starts working down, its data that obtain are sent to described control device also transfers out these data by transport module camera.
The invention still further relates to a kind of theft preventing method of tower bar cable, comprise the steps
A) judge that its detection angle is whether 360 sensor assemblies of spending are triggered, and in this way, carries out next step; As not, repeat this step;
B) photographing module and transport module power on, and start working;
C) transport module transmits data to the designated terminal that sets within it;
D) judge whether setting-up time, in this way, return steps A); As not, return step C).
In tower bar cable theft-prevention method of the present invention, described step B) further comprise:
B1) photographing module powers on, and begins to obtain ambient image;
B2) transport module powers on, and the beginning call setting is the designated terminal of portion within it;
B3) terminated call and judge whether to be connected with described designated terminal, in this way, execution in step C); As not, return step B2).
Implement tower bar cable theft-prevention device and method of the present invention, has following beneficial effect: owing to be provided with the sensor assembly that its level detection angle is 360 degree at the tower bar middle part of tower bar cable, when being arranged by this zone, personnel can be judged as the suspicion of theft substantially, so both avoided wrong report, its accuracy rate is higher, can implement again that (tower bar cable is cut off) is preceding sends warning in theft.
Description of drawings
Fig. 1 is the apparatus structure synoptic diagram of tower bar cable theft-prevention device and method embodiment of the present invention;
Fig. 2 is the position view after the installation of described embodiment;
Fig. 3 is the structural representation of sensor assembly horizontal level among the described embodiment;
Fig. 4 is the side structure synoptic diagram of Fig. 3;
Fig. 5 is the process flow diagram of method among the described embodiment.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, in tower bar cable theft-prevention device and method embodiment of the present invention, this tower bar cable theft-prevention device comprises control module 11, sensor assembly 12, photographing module 13, transport module 14 and is the power supply of above-mentioned each module for power supply (in the present embodiment, this power supply comprises as shown in Figure 1 accumulator 15 and photovoltaic conversion equipment 16).In the present embodiment, the sensor module 12 is connected with control module 11, the level induction angle of sensor assembly 12 is 360 degree, that is to say, sensor assembly 12 can sense its whole erection plane, if in its investigative range, as long as there is object to pass through the mounting plane of this module, can be sensed by it, and send corresponding signal; Simultaneously, this sensor assembly 12 is arranged on the tower bar middle part of support tower bar cable, like this, if there is the people will pass through this position, then must be sensed by it, basically, can be judged as theft suspicion by the personnel in the middle part of the tower bar, thus the alerting signal of sending.So promptly can implement to send alerting signal before the theft, also reduce the possibility of wrong report.
In the present embodiment, the sensor module 12 is connected with control module 11, and its signal of sensing is transferred to control module 11 and handles.When having object to pass through in sensor assembly 12 induction regions, sensor assembly 11 output induced signals, after control module 11 receives induced signal, starting photographing module 13 and transport module 14 (does not send out in the induced signal at sensor assembly 12, for saving power supply, above-mentioned photographing module 13 and transport module 14 are closed), wherein, transport module 14 beginnings are set up with the terminal of appointment and are got in touch, usually, the terminal of this appointment is a center control end, and it is used to monitor a plurality of states that are installed in the tower bar cable theft-prevention device on the different tower bars; Photographing module 13 then begins to obtain the image in its image pickup scope, makes preparation for keeping on-the-spot evidence; After the transport module 14 and the terminal foundation of appointment are got in touch, control module 11 begins the alerting signal that the image photographing module 13 obtained by transport module 14 and control module 11 itself sent and is sent to designated terminal, reservation also shows on this designated terminal, the tower bar position that makes the staff of this designated terminal of operation to learn in time alerting signal to occur also remains image scene, for later on further action make preparation.Because above-mentioned transport module 14 itself has specific identification code, therefore,, just can judge the particular location of the tower bar that warning occurs, handled easily personnel's scheduling as long as signal is transferred to above-mentioned designated terminal.
In the present embodiment, if induced signal does not appear in sensor assembly 12, then above-mentioned photographing module 13 and transport module 14 are that close, idle, long-term work have only sensor assembly 12 and control module 11, this is in order to save the consumption of power supply.And power supply has comprised accumulator 15 and the photovoltaic conversion equipment 16 among Fig. 1, and wherein, accumulator 15 is connected on the control module 11, is above-mentioned each module for power supply; Photovoltaic conversion equipment 16 then is connected on the above-mentioned accumulator 15, is above-mentioned accumulator 15 chargings under the situation of condition permission.
Fig. 2 shows the approximate location synoptic diagram after above-mentioned tower bar cable anti-theft alarm device is installed, and in Fig. 2, has comprised tower bar 21, tower bar cable 22, video camera 23, alarm host machine 24, sensing module 12 and photovoltaic conversion equipment 16.Wherein, tower bar cable 22 by and be fixed on the tower bar 21, the position of approximate mid-section in tower bar 21 is equipped with sensing module 12, above sensing module 12, alarm host machine 24 and video camera 23 are installed,, photovoltaic conversion equipment 16 are installed in the top of tower bar or near the position on its top, wherein, video camera 23, photovoltaic conversion equipment 16 and alarm host machine 24 all are mounted on the tower bar 21, and its mounting means is by the existing fixed device, are fixed on the tower bar 21; And sensing module 12 is installed on the tower bar 21 equally, and except that the difference of position, the mode of its installation is also slightly different than each part mentioned above, and this concrete structure with sensing module 12 is relevant.In Fig. 2, video camera 23 is parts of photographing module 13 among Fig. 1, alarm host machine 24 has then comprised a part and the accumulator 15 in the control module 11 among Fig. 1, transport module 14, the photographing module 13, and photovoltaic conversion equipment 16 is connected with accumulator 15 by cable.
In the present embodiment, sensor assembly 12 comprises and is used to surround and be installed in the erecting frame 121 on the tower bar 21 and is arranged on a plurality of sensor units 122 in the erecting frame 121, level emission/the receive direction of sensor unit 122 along erecting frame 121 away from tower bar 122, the horizontal emission direction of a plurality of sensor units 122 keeps setting angle, erecting frame 121 also comprises the fastener (not shown) that is used to be fixed on the tower bar 21, this stationary installation can be of the prior art any, is 360 degree after the level detection angle stack of a plurality of sensor units 122.These sensor units 122 are arranged in the erecting frame 121, the detection direction of sensor unit 122 is that the direction from inside to outside of erecting frame 121 is (in the center of erecting frame 121, be tower bar 21, so in fact the detection direction of sensor unit is outwards to be dispersed by above-mentioned tower bar 21).As shown in Figure 3, erecting frame 121 is two and is shaped as the circular shape part, is the circle of a hollow after its assembling, and the Outside Dimensions of described hollow space and tower bar 21 is suitable.Promptly when erecting frame 121 assembles, tower bar 21 passes the hollow space of erecting frame 121, and a plurality of sensor units 122 are owing to lay respectively on above-mentioned two erecting frames 121, and its detection direction be respectively along described erecting frame 121 radially away from tower bar 21, because each sensor unit 122 all has certain detection angle, each sensor unit 122 is arranged on again on the different horizontal direction of erecting frame 121, after the detection direction of these sensor units 122 stacks up, promptly can obtain one and install at it that search angle is the sensor assemblies 12 of 360 degree on surface level.As shown in Figure 3, in the present embodiment, the sensor unit 122 is 4, it is separately positioned on different erecting frames 121 parts of the sensor module 12, when above-mentioned different erecting frames 121 parts assembled up, the horizontal sextant angle between above-mentioned adjacent two sensor unit 122 transmit directions was 90 degree.Like this, 4 sensor units 122 just can form a detection angle that covers these surface level 360 degree, make that this sensor assembly 12 can comprehensive monitoring on its place surface level.Certainly in other embodiments, the sensor unit 122 also can not be 4, but other numbers, it for example can be 2 or 3, certainly, when the sensor unit 122 was 2, the horizontal sextant angle between them was 180 degree, and when the sensor unit 122 was 3, its horizontal sextant angle was 120 degree.In addition, in the present embodiment, the sensor unit 122 is mounted within the above-mentioned erecting frame 121, on the edge of above-mentioned erecting frame 121, there are corresponding through hole or emitter window to make the sensor unit 122 be launched smoothly or acknowledge(ment) signal (referring to Fig. 4), like this can be so that sensor unit 122 can be subjected to less interference, its serviceable life is longer; In other embodiments, the sensor unit 122 also can be installed on the described erecting frame 121, and like this, its mounting means is comparatively simple.
In the present embodiment, sensor unit 122 comprises infrared sensor unit, particularly pyroelectric infrared sensor unit, the benefit of using pyroelectric infrared sensor unit is that the warning of more efficiently filtering except that human body triggers, thereby can improve the accuracy of reporting to the police so that further lower the possibility of wrong report; Certainly, in other embodiments, the sensor unit 122 also can be ultrasonic sensor unit or microwave remote sensor unit.
In the present embodiment, above-mentioned transport module 14 is the GPRS module, its under the control of control module 11, with the data transmission of control module 11 output to being arranged on the interior designated terminal (this terminal is a center control device normally) of transport module 11; And photographing module 13 is included in the camera 23 (referring to Fig. 2) that control module 11 controls are started working down, be triggered and after the output signal at sensor assembly 12, this signal is transferred to control module 11, after control module 11 receives this signal, controlling above-mentioned photographing module 13 starts working, so, camera 23 is started working, obtain image scene, this image is being sent to control module 11 through after other section processes of photographing module 13, control module 11 is preserved these data on one side, simultaneously, the transport module 14 by having connected also is sent to these data the terminal of appointment, make the center monitoring device can preserve the copying data of a image scene, lay the first stone for further moving.The front was said, when being triggered after the output signal at sensor assembly 12, control module 11 can control photographing module 13 and transport module 14 is started working, in other embodiments, control module 11 can also be controlled other functional module and start working, and for example, can control sound-producing device and begin to play the voice that some have fright property, to stop or to postpone the generation of theft, prerequisite at this moment is that this device has comprised a sound-producing device that is connected on the control module 11 certainly.
The present invention has also disclosed a kind of tower bar cable theft-prevention method, and in the present embodiment, as shown in Figure 5, this method comprises the steps:
Is step S11 sensor assembly triggered? in this step, judge whether sensor assembly is triggered and output signal, in this way, execution in step S12; Otherwise, carry out and repeat this step; In the present embodiment, the level detection angle of the sensor module is 360 degree, can guarantee like this so long as there is object to pass through the surface level at this sensor assembly place, as long as in its investigative range, can trigger this sensor assembly and output signal, thereby make this sensor assembly that is installed in tower bar middle part can monitor this tower bar effectively.In the present embodiment, the level detection angle of above-mentioned 360 degree is by the setting of a plurality of sensor units by the position, makes its detection angle stack obtain.Certainly, the vertical sounding angle of these sensor units neither a face, and usually, its vertical sounding angle has about 30 degree haply; Same set positions owing to these sensor units, the vertical sounding angle of a plurality of sensor units is stack not, but its original vertical sounding angle of each self-sustaining.
Step S12 photographing module works on power: be not triggered and during output signal, photographing module does not work on power at sensor assembly, its reason is the consumption that can save power supply; After sensor assembly was because of the output signal that is triggered, photographing module powered on and starts working, and particularly, is exactly that photographing module begins to obtain image scene, and image scene is converted to data, was sent to control module.Control module is got up these data storage.
Step S13 transport module works on power: same owing to save power supply, transport module also is just to begin to power on when sensor assembly is triggered.In the present embodiment, because above-mentioned transport module is actually the mobile communication terminal of a GPRS, its inside has or has identity code (being common telephone number), and the identity code of each transport module is different; And each transport module will be connected and in fact also comprised the communication terminal of a GPRS to its designated terminal (center control device) that transmits data, it has an identity code equally, this identification code is existed in above-mentioned each transport module, so when any one transport module powers on, can begin to access the identity code of designated terminal immediately, and begin dialing, attempt to set up and being connected of center control device.In the present embodiment, above-mentioned steps S12 and step S13 are actually parallel, just carry out simultaneously, and control module is as long as provide control signal simultaneously like this, and above-mentioned photographing module and transport module just begin to carry out separately, help the saving of time.
Step S14 connects transport module and designated terminal: in this step, the transport module of starting working is connected with above-mentioned designated terminal (center control device).In the present embodiment, the GPRS mobile communication terminal that is actually in the transport module begins to call out (dialing) designated terminal, because both sides all have the identity code of oneself, and the number of called center control device is stored in again in the GPRS mobile communication terminal in the transport module, thus to do just the center control device called out and being awaited a response.
Does step S15 connect? is above-mentioned transport module connected with designated terminal? in this way, carry out next step, otherwise, return step S14, begin once more to connect (calling).
Step S16 transmits data: after above-mentioned connection was set up, transport module began the data transmission of the molding of automatic control in the future piece to designated terminal, these data comprise alerting signal and from photographing module by the image scene conversion data.These data all can be kept in the designated terminal.Simultaneously, when above-mentioned transport module was connected with designated terminal, designated terminal will come out the position display at warning device place on its display interface, so that operating personnel's identification.Because each transport module all has the identification code of oneself, therefore just can determine its position as long as take out this identification code.
Does the step S17 time arrive? judge whether above-mentioned connection surpasses setting-up time, in this way, then returns step S11, begins new one-time detection; As otherwise return step S16, continue to transmit data.What deserves to be mentioned is, the above-mentioned time is set in the control module, the setting of this time need make photographing module can obtain on-the-spot image, and under normal conditions can be so that the data of this image can intactly be passed back designated terminal (being the center control device).
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. tower bar cable theft-prevention device, be included as the power supply, control module of described anti-theft device power supply, photographing module and the transport module that is connected with described control module respectively, it is characterized in that, also comprise be connected with described control module, its level induction angle is the sensor assemblies of 360 degree, described sensor assembly is arranged on the tower bar middle part of supporting described tower bar cable.
2. tower bar cable theft-prevention device according to claim 1, it is characterized in that, described sensor assembly comprises and is used to surround and be installed in the erecting frame on the described tower bar and is arranged in the described erecting frame or a plurality of sensor units on the erecting frame, level emission/the receive direction of described sensor unit along described erecting frame away from described tower bar, the horizontal emission direction of described a plurality of sensor units keeps setting angle, is 360 degree after the level detection angle stack of described a plurality of sensor units.
3. tower bar cable theft-prevention device according to claim 2 is characterized in that described sensor unit comprises infrared sensor unit, ultrasonic sensor unit or microwave remote sensor unit.
4. tower bar cable theft-prevention device according to claim 3 is characterized in that described erecting frame comprises that two are shaped as the circular shape part, is the circle of a hollow after its assembling, and the Outside Dimensions of described hollow space and described tower bar is suitable.
5. tower bar cable theft-prevention device according to claim 4 is characterized in that described erecting frame also comprises the fastener that is used to be fixed on the described tower bar.
6. tower bar cable theft-prevention device according to claim 5, it is characterized in that, described sensor unit comprises 2 or 3, described each sensor unit is horizontally disposed with on described erecting frame, its transmit direction along described erecting frame radially away from described tower bar, the transmit direction of adjacent sensors unit have 180 the degree or 120 the degree horizontal sextant angles.
7. tower bar cable theft-prevention device according to claim 6 is characterized in that, described power supply is included as the accumulator of described anti-theft device each several part power supply and is connected, is the photovoltaic conversion equipment of described charge in batteries with described accumulator.
8. according to any described tower bar cable theft-prevention device of claim 1-7, it is characterized in that described transport module is included in the following data transmission that described control module is exported of described control module control to the GPRS module that is arranged on the designated terminal in the described transport module; Described photographing module is included in described control module control and starts working down, its data that obtain are sent to described control device also transfers out these data by transport module camera.
9. a tower bar cable theft-prevention method is characterized in that, comprises the steps
A) judge that its detection angle is whether 360 sensor assemblies of spending are triggered, and in this way, carries out next step; As not, repeat this step;
B) photographing module and transport module power on, and start working;
C) transport module transmits data to the designated terminal that sets within it;
D) judge whether setting-up time, in this way, return steps A); As not, return step C).
10. method according to claim 9 is characterized in that, described step B) further comprise:
B1) photographing module powers on, and begins to obtain ambient image;
B2) transport module powers on, and the beginning call setting is the designated terminal of portion within it;
B3) terminated call and judge whether to be connected with described designated terminal, in this way, execution in step C); As not, return step B2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101575830A CN102074087B (en) | 2010-04-28 | 2010-04-28 | Anti-theft device of tower pole cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101575830A CN102074087B (en) | 2010-04-28 | 2010-04-28 | Anti-theft device of tower pole cable |
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| Publication Number | Publication Date |
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| CN102074087A true CN102074087A (en) | 2011-05-25 |
| CN102074087B CN102074087B (en) | 2013-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101575830A Expired - Fee Related CN102074087B (en) | 2010-04-28 | 2010-04-28 | Anti-theft device of tower pole cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102737460A (en) * | 2012-07-11 | 2012-10-17 | 苏州正华电子电器成套设备厂 | Electric transmission line channel protection alarm device |
| CN103871184A (en) * | 2012-12-13 | 2014-06-18 | 上海共联通信信息发展有限公司 | Cable antitheft alarm device |
| CN105590406A (en) * | 2016-03-02 | 2016-05-18 | 上海海能信息科技有限公司 | Induction power supply electric transmission line anti-external damage monitoring and warning system |
| CN106373307A (en) * | 2016-12-07 | 2017-02-01 | 国网河南省电力公司巩义市供电公司 | Wire rod with alarm device and fault locating method |
| WO2024208255A1 (en) * | 2023-04-06 | 2024-10-10 | Charm Faith Creation Limited | Overhead protection sensor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201122325Y (en) * | 2007-10-30 | 2008-09-24 | 宁四明 | Multifunctional outdoor tower frame anti-theft alarm device |
| CN201674157U (en) * | 2010-04-28 | 2010-12-15 | 严志宏 | Pole cable anti-theft device |
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- 2010-04-28 CN CN2010101575830A patent/CN102074087B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122325Y (en) * | 2007-10-30 | 2008-09-24 | 宁四明 | Multifunctional outdoor tower frame anti-theft alarm device |
| CN201674157U (en) * | 2010-04-28 | 2010-12-15 | 严志宏 | Pole cable anti-theft device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737460A (en) * | 2012-07-11 | 2012-10-17 | 苏州正华电子电器成套设备厂 | Electric transmission line channel protection alarm device |
| CN103871184A (en) * | 2012-12-13 | 2014-06-18 | 上海共联通信信息发展有限公司 | Cable antitheft alarm device |
| CN105590406A (en) * | 2016-03-02 | 2016-05-18 | 上海海能信息科技有限公司 | Induction power supply electric transmission line anti-external damage monitoring and warning system |
| CN106373307A (en) * | 2016-12-07 | 2017-02-01 | 国网河南省电力公司巩义市供电公司 | Wire rod with alarm device and fault locating method |
| WO2024208255A1 (en) * | 2023-04-06 | 2024-10-10 | Charm Faith Creation Limited | Overhead protection sensor system |
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| CN102074087B (en) | 2013-05-29 |
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