CN111311861A - Cable stealing prevention visual positioning device based on thermal imaging principle - Google Patents

Abstract

The invention discloses a cable theft prevention visual positioning device based on a thermal imaging principle, which comprises a protective box, wherein a toughened glass protective cover is screwed and fixed on one side of the protective box, a thermal imaging camera is installed on one side, close to the toughened glass protective cover, of the interior of the protective box through an angle adjusting support, a lithium ion battery is installed on the inner wall of the bottom of the other side of the protective box, a buzzer alarm is installed at the center of the top of the lithium ion battery, an electric cabinet is installed right above the lithium ion battery, a circuit board is installed in the electric cabinet, and a GPS positioning module, a single chip microcomputer and a wireless network module are installed on the circuit board. The invention has novel structure and ingenious conception, can reduce the workload of patrolling the stolen line every day, reduces the number of line faults and complaint risks while reducing cables, avoids electric shock of social personnel, and avoids power grid economy and user power failure and shutdown loss.

Description

Cable stealing prevention visual positioning device based on thermal imaging principle

Technical Field

The invention relates to the technical field of cable theft prevention, in particular to a visual positioning device for preventing cable theft based on a thermal imaging principle.

Background

The power cable is used for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater. In the power lines, the cable is increasing in specific gravity. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

Because the distribution positions of the power grid cables are wide at present, operation and maintenance personnel are few, and real-time supervision cannot be carried out in place. Therefore, lawless persons can steal the cable, so that the cable protection attention degree of a power grid enterprise is more and more emphasized, the cable of the power grid can be cut when the lawless persons steal the cable, personal accidents can happen if the cable has 10kV voltage, meanwhile, the line is tripped, large-area fault power failure is caused, and the trip index assessment and the customer complaint risk are greatly influenced. Meanwhile, the first-aid repair amount and the working time of workers are increased. According to data lookup, the current method is mainly used for operation and maintenance personnel to patrol the line, but the method cannot solve the problem that the remote monitoring cable is stolen. Therefore, it is necessary to design a visual positioning device based on thermal imaging principle to prevent cable theft.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the visual positioning device for preventing the cable from being stolen based on the thermal imaging principle, the device has a novel structure and an ingenious design, the workload of patrolling the circuit to be stolen every day can be reduced, the number of line faults and the complaint risk are reduced while the cable is reduced, the electric shock of social personnel is avoided, and the power grid economy and the power failure and shutdown loss of users are avoided.

In order to achieve the purpose, the invention provides the following technical scheme: a visual positioning device for preventing a cable from being stolen based on a thermal imaging principle comprises a protective box, wherein a toughened glass protective cover is screwed and fixed on one side of the protective box, one side of the interior of the protective box, which is close to the toughened glass protective cover, is provided with a thermal imaging camera through an angle adjusting bracket, a lithium ion battery is arranged on the inner wall of the bottom of the other side of the protection box, a buzzer alarm is arranged at the center of the top of the lithium ion battery, an electric cabinet is arranged right above the lithium ion battery, a circuit board is arranged in the electric cabinet, the circuit board is provided with a GPS positioning module, a singlechip and a wireless network module, the thermal imaging camera and the GPS positioning module are electrically connected with the input end of the singlechip, the first output end of the single chip microcomputer is electrically connected with the buzzer alarm, and the second output end of the single chip microcomputer is in two-way communication connection with the monitoring platform through the wireless network module.

Preferably, the angle modulation support includes moving mechanism, coupling spring, backup pad and L shape mounting bracket, one side that the inside of protective housing is close to the toughened glass protection casing is installed to L shape mounting bracket, the backup pad is installed to the bottom center department symmetry of L shape mounting bracket, it is connected with the thermal imaging camera to rotate in the backup pad, moving mechanism is installed to the top center department of L shape mounting bracket, moving mechanism passes through coupling spring and is connected with one side center department of thermal imaging camera.

Preferably, moving mechanism includes slide rail, lead screw, slider, reduction gear and servo motor, the top center department at L shape mounting bracket is installed to the slide rail, the inside of slide rail is rotated and is connected with the lead screw, the reduction gear of being connected with the lead screw drive is installed to top one side of slide rail, install servo motor on the reduction gear, the meshing is connected with the inside gliding slider at the slide rail on the lead screw, the slider is connected through connecting spring and one side center department of thermal imaging camera.

Preferably, a radiator is installed on the inner wall of one side of the electric cabinet, and heat dissipation holes are formed in the inner wall of the other side of the electric cabinet, which corresponds to the radiator.

Preferably, a charge-discharge control circuit is integrated in the lithium ion battery, and the input end of the charge-discharge control circuit is electrically connected with the solar cell panel and the power supply network.

Preferably, the wireless network module conforms to the UDP protocol.

Preferably, the single chip microcomputer further comprises an image processing module, and the image processing module processes information collected by the thermal imaging camera by adopting a facial feature extraction algorithm.

Preferably, the facial feature extraction algorithm has a face-face feature scale space:

Lx，y，a＝Gx，y，a*Ix，y

wherein, the convolution symbols of x and y, a scale space of the image, L (x, y, a) is defined as a Gaussian function G (x, y, a) with variable scale and the original image I (x, y), wherein a is a scale space factor, and x and y are space coordinate values;

convolving the proportional space of the Gaussian differential equation with the face image, and calculating D (x, y, a) by differentiating 2 nearby quantities with a coefficient k to obtain:

D(xy，a)＝[G(x，y，ka)-G(x，y，a)]*I(x，y)

＝L(x，y，ka)-L(x，y，a)

wherein k is a constant and does not affect the calculation of the position of the extreme point, D (x, y, a) represents a Gaussian difference function, the maximum value or the minimum value of a Laplacian operator of a Gaussian equation after the scale normalization is obtained, and stable portrait facial features can be generated.

The invention has the beneficial effects that:

1. the device is installed under a cable well, a thermal imaging camera shoots or monitors the condition of the cable well in real time, collected signals are transmitted to a single chip microcomputer, whether a person goes into the well or not is judged after the single chip microcomputer is processed, if the person goes into the well, the single chip microcomputer controls a buzzer alarm to alarm, collected data and positioning information of a GPS positioning module are transmitted to a monitoring platform through a wireless network module, the monitoring platform is triggered to alarm, a real-time line is generated, and workers can check the real-time line conveniently, so that the workload of going out and patrolling the line every day and stealing the line can be reduced, the number of line faults and complaints are reduced while the cable is reduced, electric shock of social personnel is avoided, and power grid economy and power failure and shutdown loss;

2. the monitoring platform can remotely send an instruction and transmit the instruction to the single chip microcomputer through the wireless network module, the single chip microcomputer controls the servo motor to work after processing, and the speed reducer is driven to rotate, so that the lead screw is driven to rotate, the sliding block moves in the sliding rail, and then the connecting spring is driven to drive the thermal imaging camera to adjust the angle, so that personnel entering a cable well can be shot clearly, and the use convenience is improved;

3. the information collected by the thermal imaging camera is processed by adopting a facial feature extraction algorithm, so that the identity of a person can be accurately distinguished even if the face is shielded by a small part of a coat, and the use safety is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall plan structure of the present invention;

FIG. 2 is a schematic sectional view of an electric cabinet according to the present invention;

FIG. 3 is a schematic view of the angle adjusting bracket of the present invention;

FIG. 4 is a schematic plan view of the moving mechanism of the present invention;

FIG. 5 is a block diagram of a power supply structure of a lithium ion battery according to the present invention;

reference numbers in the figures: 1. a protective box; 2. an electric cabinet; 3. a lithium ion battery; 4. an angle adjusting bracket; 5. a thermal imaging camera; 6. a toughened glass protective cover; 7. a monitoring platform; 8. a buzzer alarm; 9. a GPS positioning module; 10. a single chip microcomputer; 11. a wireless network module; 12. a heat sink; 13. heat dissipation holes; 14. a circuit board; 15. a moving mechanism; 16. a connecting spring; 17. a support plate; 18. an L-shaped mounting bracket; 19. a slide rail; 20. a screw rod; 21. a slider; 22. a speed reducer; 23. a servo motor; 24. a charge and discharge control circuit; 25. a solar panel; 26. a power supply network.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 5.

As shown in fig. 1 to 5, the present invention provides the following technical solutions: a visual positioning device for preventing cable theft based on a thermal imaging principle comprises a protective box 1, wherein a toughened glass protective cover 6 is fixedly screwed on one side of the protective box 1, a thermal imaging camera 5 is arranged on one side, close to the toughened glass protective cover 6, of the interior of the protective box 1 through an angle adjusting support 4, a lithium ion battery 3 is arranged on the inner wall of the bottom of the other side of the protective box 1, a buzzer alarm 8 is arranged at the center of the top of the lithium ion battery 3, an electric cabinet 2 is arranged right above the lithium ion battery 3, a circuit board 14 is arranged in the electric cabinet 2, a GPS positioning module 9, a single chip microcomputer 10 and a wireless network module 11 are arranged on the circuit board 14, the thermal imaging camera 5 and the GPS positioning module 9 are electrically connected with the input end of the single chip microcomputer 10, a first output end of the single chip microcomputer 10 is electrically connected with the buzzer alarm 8, install the device in the cable pit, the condition of thermal imaging camera 5 real-time shooting or monitoring cable pit, and signal transmission for singlechip 10 with the collection, singlechip 10 is handled the back and is judged that there is the personnel to go into the pit, if someone goes into the pit, singlechip 10 controls buzzer siren 8 and reports to the police, and transmit the data of collecting and GPS orientation module 9 locating information to monitor platform 7 through wireless network module 11, and trigger monitor platform 7 and report to the police, generate real-time line, go to look over before the staff of being convenient for, thereby can reduce the work load that patrolling the circuit stolen of going out the day, line fault number and complaint risk have also been reduced when reducing the cable, avoid social personnel to electrocute, avoid the power grid economy and user to have a power failure shutdown loss.

Preferably, the angle adjusting bracket 4 comprises a moving mechanism 15, a connecting spring 16, a supporting plate 17 and an L-shaped mounting frame 18, the L-shaped mounting frame 18 is installed at one side of the inside of the protection box 1, which is close to the tempered glass protection cover 6, the supporting plate 17 is symmetrically installed at the center of the bottom of the L-shaped mounting frame 18, the thermal imaging camera 5 is rotatably connected to the supporting plate 17, the moving mechanism 15 is installed at the center of the top of the L-shaped mounting frame 18, and the moving mechanism 15 is connected with the center of one side of the thermal imaging camera 5 through the connecting spring 16.

Preferably, the moving mechanism 15 includes a slide rail 19, a screw rod 20, a slide block 21, a speed reducer 22 and a servo motor 23, the slide rail 19 is installed at the center of the top of the L-shaped mounting frame 18, the inside of the slide rail 19 is rotatably connected with the screw rod 20, one side of the top of the slide rail 19 is installed with the speed reducer 22 in driving connection with the screw rod 20, the servo motor 23 is installed on the speed reducer 22, the screw rod 20 is connected with the slide block 21 sliding inside the slide rail 19 in a meshing manner, the slide block 21 is connected with the center of one side of the thermal imaging camera 5 through a connecting spring 16, the monitoring platform 7 can remotely send an instruction and transmit the instruction to the single chip microcomputer 10 through the wireless network module 11, the single chip microcomputer 10 processes the instruction and then controls the servo motor 23 to work to drive the speed reducer 22 to rotate, thereby driving the screw rod 20 to rotate, so that the personnel who get into the cable shaft in clear shooting promotes the convenience of use.

Preferably, radiator 12 is installed to one side inner wall of electric cabinet 2, and louvre 13 has just been seted up to corresponding radiator 12 to the opposite side inner wall of electric cabinet 2, is convenient for the inside components and parts heat dissipation of electric cabinet 2, promotes the life of the inside components and parts of electric cabinet 2.

Preferably, the charging and discharging control circuit 24 is integrated in the lithium ion battery 3, and the input end of the charging and discharging control circuit 24 is electrically connected with the solar cell panel 25 and the power supply network 26, so that the lithium ion battery 3 can be charged conveniently, and the cruising ability of the lithium ion battery 3 is improved.

Preferably, the wireless network module 11 follows a UDP protocol, the UDP protocol is a connectionless protocol, a connection does not need to be established between the sending end and the receiving end before data transmission, when the sending end intends to send data, it first captures data from an application program, and then distributes the data to the network as quickly as possible, the data throughput of the UDP protocol is limited only by the data generation speed of the sending end application program, the bandwidth of a network transmission medium, and the computer performance of the sending end and the receiving end, and is not limited by a congestion control algorithm, and the UDP protocol does not establish a connection when transmitting data, so that the network connection state does not need to be maintained during the network data transmission.

Preferably, the single chip microcomputer 10 further comprises an image processing module, the image processing module processes the information collected by the thermal imaging camera 5 by adopting a facial feature extraction algorithm, and processes the information collected by the thermal imaging camera 5 by adopting the facial feature extraction algorithm, so that the identity of a person can be accurately identified even if the face is shielded by clothes and caps, and the use safety is improved.

Preferably, the face feature scale space of the face feature extraction algorithm is:

Lx，y，a＝Gx，y，a*Ix，y

where x is the sign of the convolution of x and y;

convolving the proportional space of the Gaussian differential equation with the face image, and calculating D (x, y, a) by differentiating 2 nearby quantities with a coefficient k to obtain:

D(x，y，a)＝[G(x，y，ka)-G(x，y，a)]*I(x，y)

＝L(x，y，ka)-L(x、y，a)

and obtaining the maximum value or the minimum value of the Laplace operator of the Gaussian equation after the scale normalization, and generating stable portrait face features.

When the device is used, the device is arranged under a cable well, the thermal imaging camera 5 shoots or monitors the condition of the cable well in real time, collected signals are transmitted to the single chip microcomputer 10, whether a person goes into the well is judged after the single chip microcomputer 10 processes the signals, if the person goes into the well, the single chip microcomputer 10 controls the buzzer alarm 8 to give an alarm, the collected data and the positioning information of the GPS positioning module 9 are transmitted to the monitoring platform 7 through the wireless network module 11, the monitoring platform 7 is triggered to give an alarm, a real-time line is generated, and the device is convenient for workers to check, so that the workload of stealing a patrol line in the day and day can be reduced, the number of line faults and the risk of complaints are reduced while the cable is reduced, electric shock of social staff is avoided, and power failure and shutdown loss of a power;

the monitoring platform 7 can remotely send an instruction and transmits the instruction to the single chip microcomputer 10 through the wireless network module 11, the single chip microcomputer 10 controls the servo motor 23 to work after processing, the speed reducer 22 is driven to rotate, the lead screw 20 is driven to rotate, the sliding block 21 moves in the sliding rail 19, and then the connecting spring 16 is driven to drive the thermal imaging camera 5 to adjust the angle, so that people entering a cable well can be shot clearly, and the use convenience is improved;

the information collected by the thermal imaging camera 5 is processed by adopting a facial feature extraction algorithm, so that the identity of a person can be accurately identified even if the face is shielded by a small part of a coat, and the use safety is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a visual positioner prevents cable stealing based on thermal imaging principle, includes protective housing (1), its characterized in that: one side of the protection box (1) is fixedly connected with a toughened glass protection cover (6) in a screwed mode, one side, close to the toughened glass protection cover (6), of the interior of the protection box (1) is provided with a thermal imaging camera (5) through an angle adjusting support (4), the inner wall of the bottom of the other side of the protection box (1) is provided with a lithium ion battery (3), the top center of the lithium ion battery (3) is provided with a buzzer alarm (8), an electric cabinet (2) is arranged right above the lithium ion battery (3), a circuit board (14) is arranged inside the electric cabinet (2), a GPS positioning module (9), a single chip microcomputer (10) and a wireless network module (11) are arranged on the circuit board (14), the thermal imaging camera (5) and the GPS positioning module (9) are electrically connected with the input end of the single chip microcomputer (10), and the first output end of the single chip microcomputer (10) is electrically connected with, and a second output end of the singlechip (10) is in bidirectional communication connection with the monitoring platform (7) through a wireless network module (11).

2. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 1, wherein: angle modulation support (4) are including moving mechanism (15), connecting spring (16), backup pad (17) and L shape mounting bracket (18), one side that the inside of protective housing (1) is close to toughened glass protection casing (6) is installed in L shape mounting bracket (18), backup pad (17) are installed to the bottom center department symmetry of L shape mounting bracket (18), it is connected with thermal imaging camera (5) to rotate on backup pad (17), moving mechanism (15) are installed to the top center department of L shape mounting bracket (18), moving mechanism (15) are located to be connected through connecting spring (16) and thermal imaging camera (5) one side center.

3. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 2, wherein: moving mechanism (15) include slide rail (19), lead screw (20), slider (21), reduction gear (22) and servo motor (23), the top center department at L shape mounting bracket (18) is installed in slide rail (19), the inside rotation of slide rail (19) is connected with lead screw (20), reduction gear (22) of being connected with lead screw (20) drive are installed to top one side of slide rail (19), install servo motor (23) on reduction gear (22), the meshing is connected with inside gliding slider (21) at slide rail (19) on lead screw (20), slider (21) are located to be connected through one side center of coupling spring (16) and thermal imaging camera (5).

4. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 1, wherein: radiator (12) are installed to one side inner wall of electric cabinet (2), louvre (13) have just been seted up corresponding radiator (12) to the opposite side inner wall of electric cabinet (2).

5. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 1, wherein: the lithium ion battery (3) is internally integrated with a charge-discharge control circuit (24), and the input end of the charge-discharge control circuit (24) is electrically connected with a solar cell panel (25) and a power supply network (26).

6. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 1, wherein: the wireless network module (11) conforms to the UDP protocol.

7. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 1, wherein: the single chip microcomputer (10) further comprises an image processing module, and the image processing module processes information collected by the thermal imaging camera (5) by adopting a facial feature extraction algorithm.

8. The thermal imaging principle based cable theft prevention visual positioning device as claimed in claim 7, wherein: the facial feature extraction algorithm comprises a face feature scale space:

L(x，y，a)＝G(x，y，a)*I(x，y)

where x is the sign of the convolution of x and y; an image scale space, L (x, y, a) is defined as a Gaussian function G (x, y, a) with variable scale and the original image I (x, y), wherein a is a scale space factor, and x and y are space coordinate values;

convolving the proportional space of the Gaussian differential equation with the face image, and calculating D (x, y, a) by differentiating 2 nearby quantities with a coefficient k:

D(x，y，a)＝[G(x，y，ka)-G(x，y，a)]*I(x，y)＝L(x，y，ka)-L(x，y，a)

wherein k is a constant and does not affect the calculation of the position of the extreme point, D (x, y, a) represents a Gaussian difference function, the maximum value or the minimum value of a Laplacian operator of a Gaussian equation after the scale normalization is obtained, and stable portrait facial features can be generated.

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