Electronic fence device that links lidar and cameras

Abstract

This utility model belongs to the field of foreign object intrusion monitoring technology, specifically involving an electronic fence device that links LiDAR and a camera. It includes a post, a LiDAR, and a cover mechanism. The LiDAR is used to identify and locate intruders or objects, facilitating adjustments to the pan-tilt-zoom (PTZ) camera angle. This reduces manual monitoring time and the time spent adjusting the PTZ camera's angle, improving monitoring efficiency and lowering labor costs. The cover mechanism provides protection when the PTZ camera is not in use, reducing the risk of impacts. When the PTZ camera moves upwards, the mounting plate moves upwards, causing the cover to move horizontally away from directly above the PTZ camera, preventing obstruction of its movement.

Description

Technical Field

[0001] This utility model belongs to the field of foreign object intrusion detection technology, specifically involving an electronic fence device that links lidar and a camera. Background Technology

[0002] With the increasing number of industrial scenarios, safety production issues are receiving more and more attention. How to effectively prevent and control accidents and ensure the safety of workers is an important issue in safety management. Electronic fences are an advanced perimeter anti-theft alarm system. The system mainly consists of three parts: electronic fence host, front-end accessories, and back-end control system. Electronic fence technology is an effective means of ensuring safety.

[0003] Electronic fences typically have cameras installed at the front end. To avoid safety hazards, staff need to monitor the safe area in real time through the cameras and frequently adjust the camera's shooting direction to detect safety issues in a timely manner. This results in low monitoring efficiency and high labor costs. Utility Model Content

[0004] The purpose of this invention is to provide an electronic fence device that links LiDAR and a camera. This device solves the problems of low monitoring efficiency and high labor costs in the existing technology, where workers need to monitor the safe area in real time through a camera and frequently adjust the camera's shooting direction in order to detect safety problems in a timely manner.

[0005] The specific technical solution adopted in this utility model is as follows: An electronic fence device that links lidar and cameras includes: A column, the inside of which is equipped with a camera mechanism; A lidar, which is installed on top of the column, is used to identify and locate intruders or equipment. A cover mechanism is provided on the top of the column and is used to automatically open when the camera mechanism is in operation.

[0006] In a preferred embodiment, the camera mechanism includes an electric telescopic pole, a mounting plate, a servo motor, and a pan-tilt camera. The top surface of the column is provided with a mounting groove, and the electric telescopic pole is fixedly installed inside the bottom surface of the mounting groove. The top surface of the output end of the electric telescopic pole is fixedly provided with a mounting plate, the top surface of the mounting plate is fixedly installed with a servo motor, and the top surface of the output end of the servo motor is fixedly provided with a pan-tilt camera.

[0007] In a preferred embodiment, a sound alarm and a high-brightness light alarm are fixedly installed on the front of the column, and a fixing block is fixedly installed on each of the four outer edges of the column. A fixing rod is fixedly installed on the side of the fixing block, and a fixing plate is fixedly installed on the top surface of the fixing rod. The laser radar is fixedly installed on the top surface of the fixing plate.

[0008] In a preferred embodiment, the sealing mechanism includes a connecting rod, a cover plate, a T-shaped slide bar, a vertical groove, and a stop bar. The top surface of the mounting plate is hinged with symmetrical connecting rods, and the other end of the connecting rod is hinged with a cover plate. The bottom surface of the cover plate is fixedly provided with a T-shaped slide bar, the top surface of the column is provided with symmetrical vertical grooves, and the inner wall of the mounting groove is fixedly provided with symmetrical stop bars.

[0009] In a preferred embodiment, the bottom surface of the cover plate is slidably connected to the top surface of the column, and the top surface of the column is provided with a T-shaped groove adapted to the T-shaped slide bar, and the T-shaped slide bar is slidably connected to the column through the T-shaped slide groove.

[0010] In a preferred embodiment, a controller is installed inside the column, and the controller is electrically connected to the electric telescopic pole, servo motor, pan-tilt camera, sound alarm, high-brightness light alarm and lidar respectively via wires.

[0011] The technical effects achieved by this utility model are as follows: This utility model incorporates a lidar system for identifying and locating intruders or objects, facilitating adjustments to the pan-tilt-zoom (PTZ) camera angle. This reduces manual monitoring time and the time required to adjust the camera angle, thereby improving monitoring efficiency and lowering labor costs. This utility model features a cover mechanism. The cover plate can protect the PTZ camera when it is not in use, reducing the risk of the PTZ camera being bumped or knocked. When the PTZ camera moves upward, the mounting plate moves upward, causing the cover plate to move horizontally away from directly above the PTZ camera, thus avoiding obstructing the movement of the PTZ camera. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic cross-sectional view of the main structure of this utility model; Figure 3 This is a utility model Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This is a schematic diagram of point cloud filtering for the lidar of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 100. Columns; 200. Camera mechanism; 201. Electric telescopic pole; 202. Mounting plate; 203. Servo motor; 204. Pan-tilt camera; 300. Audible alarm; 400. High-brightness light alarm; 500. LiDAR; 501. Fixing block; 502. Fixing rod; 503. Fixing plate; 600. Covering mechanism; 601. Connecting rod; 602. Cover plate; 603. T-shaped slide bar; 604. Vertical groove; 605. Stop bar. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0017] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0018] Please see the appendix Figures 1 to 2 As shown, this utility model provides an electronic fence device that links a laser radar and a camera, including: a post 100, a laser radar 500, and a cover mechanism 600. A camera mechanism 200 is installed inside the post 100, and a sound alarm 300 and a high-brightness light alarm 400 are fixedly installed on the front of the post 100.

[0019] In a preferred embodiment, please refer to Figure 3 The camera mechanism 200 consists of an electric telescopic rod 201, a mounting plate 202, a servo motor 203, and a pan-tilt camera 204. The top surface of the column 100 is provided with a mounting groove, and the electric telescopic rod 201 is fixedly installed inside the bottom surface of the mounting groove. The top surface of the output end of the electric telescopic rod 201 is fixedly provided with the mounting plate 202, and the top surface of the mounting plate 202 is fixedly installed with the servo motor 203. The top surface of the output end of the servo motor 203 is fixedly provided with the pan-tilt camera 204.

[0020] In this embodiment, the column 100 is equipped with a controller and a battery. The battery powers the electronic components mounted on the column 100. The controller is electrically connected to the electric telescopic rod 201, servo motor 203, pan-tilt camera 204, sound alarm 300, and high-brightness light alarm 400 via wires. When a safety issue occurs, the controller controls the servo motor 203 to rotate the pan-tilt camera 204, adjusting its shooting angle. The controller also controls the electric telescopic rod 201 to move the mounting plate 202 upwards, and controls the sound alarm 300 and high-brightness light alarm 400. The alarm 400 sounds an alarm to alert staff. The moving mounting plate 202 drives the servo motor 203 and the pan-tilt camera 204 to move upwards to the top of the column 100 to record video. The pan-tilt camera 204 transmits the captured data to the remote monitoring system via its built-in wireless transmission module. The remote monitoring system receives the data via its wireless receiving module. On-duty personnel can remotely view the real-time video images of the scene through the remote monitoring terminal to intuitively understand the situation on site. When the camera mechanism 200 is set inside the column 100, it can achieve a concealed effect, preventing personnel from discovering the pan-tilt camera 204 and taking precautions in advance.

[0021] In a preferred embodiment, please refer to Figures 1 to 3 Each of the four outer edges of the column 100 is fixedly equipped with a fixing block 501, a fixing rod 502 is fixedly equipped on the side of the fixing block 501, and a fixing plate 503 is fixedly equipped on the top surface of the fixing rod 502. The laser radar 500 is fixedly installed on the top surface of the fixing plate 503. The laser radar 500 is electrically connected to the controller through a wire. The laser radar 500 is set above the column 100 and can scan the situation within a 360-degree range in front of and behind the column 100. The laser radar 500 is used to identify intruders or objects and locate the specific area where the intrusion is sent. This facilitates the camera mechanism 200 to adjust the shooting angle of the pan-tilt camera 204, reduces the time for manual monitoring and the time for the pan-tilt camera 204 to adjust the shooting angle, improves monitoring efficiency, and reduces labor costs.

[0022] Specifically, please refer to Figure 4 The LiDAR 500 utilizes point cloud data preprocessing technology and a grid-based filtering algorithm to detect whether there are personnel or equipment within the safety line of the pillar 100. During detection, the LiDAR 500 point cloud is converted into a grid, and point cloud filtering based on spatial and temporal constraints is applied to the point cloud within the grid. After the LiDAR 500 point cloud has passed through the grid filtering, the remaining point cloud is considered to be the scanned object. It is determined whether these point clouds are within the safety line of the pillar 100. When personnel or equipment are detected within the safety line of the pillar 100, based on the specific location of this grid on the pillar 100, the controller controls the pan-tilt camera 204 to rotate to the corresponding angle.

[0023] Point cloud data preprocessing is a technique used in the prior art to preprocess acquired data. It mainly studies point cloud noise reduction, point cloud simplification, point cloud registration, and point cloud hole filling. Raster-based filtering algorithms are one type of point cloud data preprocessing algorithm. The steps for rasterizing the safety line of column 100 include: using a calibration object and a LiDAR 500 to calibrate the space, obtaining the coordinates of the four vertices, forming a quadrilateral, and then calibrating the safety line area of ​​column 100; calculating the rectangle with the smallest area among all rectangles containing the quadrilateral based on the coordinates of the four vertices; and selecting an appropriate resolution to rasterize the rectangle.

[0024] In this embodiment, spatial filtering means that the number of point clouds in a grid should be greater than a certain threshold or the maximum distance between two points should be greater than a certain threshold. Therefore, spatial filtering can filter out some small objects. Temporal filtering means that the number of times an object is scanned in a grid should be greater than a certain number of times within a certain time period. Therefore, temporal filtering can filter out noise.

[0025] In a preferred embodiment, please refer to Figures 1 to 3 The top of the column 100 is provided with a sealing mechanism 600, which consists of a connecting rod 601, a cover plate 602, a T-shaped sliding strip 603, a vertical groove 604 and a stop bar 605. The top surface of the mounting plate 202 is hinged with symmetrical connecting rods 601, and the other end of the connecting rod 601 is hinged with a cover plate 602. The bottom surface of the cover plate 602 is fixedly provided with a T-shaped sliding strip 603. The top surface of the column 100 is provided with symmetrical vertical grooves 604, and the inner wall of the mounting groove is fixedly provided with symmetrical stop bars 605.

[0026] In this embodiment, the bottom surface of the cover plate 602 is slidably connected to the top surface of the column 100, and the top surface of the column 100 is provided with a T-shaped groove adapted to the T-shaped slide bar 603. The T-shaped slide bar 603 is slidably connected to the column 100 through the T-shaped slide groove. In this embodiment, the cover plate 602 can protect the gimbal camera 204 when it is not in use, reducing the risk of the gimbal camera 204 being bumped or knocked. When the gimbal camera 204 moves upward, the mounting plate 202 moves upward, causing the connecting rod 601 to rotate at the same time. The rotation of the connecting rod 601 causes the cover plate 602 to move horizontally and away from the top of the gimbal camera 204. The T-shaped slide bar 603, in conjunction with the T-shaped slide groove, guides the movement of the cover plate 602, avoiding obstruction to the movement of the gimbal camera 204.

[0027] It should be noted that the gimbal camera 204 reaches its maximum upward height when the mounting plate 202 contacts the stop strip 605. During the up-and-down movement of the gimbal camera 204, it never contacts the cover plate 602, the T-shaped slide strip 603, or the fixing plate 503.

[0028] The working principle of this utility model is as follows: When in use, the device uses a lidar 500 to detect whether there are personnel or equipment within the safety line of the pillar 100. When personnel or equipment are detected within the safety line of the pillar 100, the controller controls the servo motor 203 to rotate the pan-tilt camera 204 to the corresponding angle according to the specific location of the equipment or personnel. The controller also controls the electric telescopic rod 201 to move the mounting plate 202 upward, and controls the sound alarm 300 and the high-brightness light alarm 400 to sound an alarm to remind the staff. The movement of the mounting plate 202 moves the servo motor 203 and the pan-tilt camera 204 upward. The camera moves above the column 100 to record video. The mounting plate 202 moves upward, causing the connecting rod 601 to rotate simultaneously. The rotation of the connecting rod 601 causes the cover plate 602 to move horizontally away from directly above the pan-tilt camera 204, thus avoiding obstructing the movement of the pan-tilt camera 204. The pan-tilt camera 204 transmits the captured data to a remote monitoring system via its built-in wireless transmission module. The remote monitoring system receives the data via its wireless receiving module. On-duty personnel can remotely view real-time video images of the site through the remote monitoring terminal to intuitively understand the situation on site.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. Laser radar and camera linkage electronic fence device, characterized in that: include: A column (100) is provided with a camera mechanism (200) inside the column (100); A lidar (500) is mounted on top of a column (100) and is used to identify and locate intruders or equipment. A cover mechanism (600) is provided on the top of the column (100) and is used to automatically open when the camera mechanism (200) is working.

2. The laser radar and camera linked electronic fence device according to claim 1, characterized in that: The camera mechanism (200) includes an electric telescopic rod (201), a mounting plate (202), a servo motor (203), and a gimbal camera (204). The top surface of the column (100) is provided with a mounting groove, and the electric telescopic rod (201) is fixedly installed on the bottom surface inside the mounting groove. The top surface of the output end of the electric telescopic rod (201) is fixedly provided with the mounting plate (202), the top surface of the mounting plate (202) is fixedly installed with the servo motor (203), and the top surface of the output end of the servo motor (203) is fixedly provided with the gimbal camera (204).

3. The laser radar and camera linked electronic fence device according to claim 2, characterized in that: The column (100) is fixedly installed with a sound alarm (300) and a high-brightness light alarm (400) on the front. The four outer edges of the column (100) are fixedly provided with fixing blocks (501). The fixing blocks (501) are fixedly provided with fixing rods (502) on the side. The fixing rods (502) are fixedly provided with fixing plates (503) on the top surface. The laser radar (500) is fixedly installed on the top surface of the fixing plate (503).

4. The laser radar and camera linked electronic fence device according to claim 2, characterized in that: The sealing mechanism (600) includes a connecting rod (601), a cover plate (602), a T-shaped slide bar (603), a vertical groove (604), and a stop bar (605). The top surface of the mounting plate (202) is hinged with a symmetrical connecting rod (601), and the other end of the connecting rod (601) is hinged with a cover plate (602). The bottom surface of the cover plate (602) is fixedly provided with a T-shaped slide bar (603). The top surface of the column (100) is provided with a symmetrical vertical groove (604), and the inner wall of the mounting groove is fixedly provided with a symmetrical stop bar (605).

5. The laser radar and camera linked electronic fence device according to claim 4, characterized in that: The bottom surface of the cover plate (602) is slidably connected to the top surface of the column (100). The top surface of the column (100) is provided with a T-shaped groove adapted to the T-shaped slide bar (603). The T-shaped slide bar (603) is slidably connected to the column (100) through the T-shaped slide groove.

6. The laser radar and camera linked electronic fence device according to claim 3, characterized in that: The column (100) is equipped with a controller, which is electrically connected to the electric telescopic pole (201), servo motor (203), pan-tilt camera (204), sound alarm (300), high-brightness light alarm (400) and laser radar (500) via wires.

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