Video monitoring reminding equipment

Abstract

The invention relates to the technical field of photographic devices, in particular to video monitoring reminding equipment which comprises a fixing rod, a camera and a sound reminding device, a plurality of lifting assemblies are arranged on the fixing rod at intervals in the circumferential direction, and each lifting assembly is connected with a mounting plate and controls the mounting plate to ascend and descend. The multiple cameras are rotationally arranged on the multiple mounting plates in a one-to-one correspondence mode and connected with rotation driving parts, the sound reminding device is mounted on the fixing rod, and a server is connected between the cameras and the sound reminding device to form a monitoring reminding system; when the to-be-cleaned camera is controlled by the lifting assembly to descend and generate a first monitoring blind area, the camera adjacent to one side of the to-be-cleaned camera is controlled by the rotating driving part to rotate towards the direction of the first monitoring blind area, and the situation that a large monitoring blind area is generated due to cleaning of a lens of the camera can be avoided; therefore, the video monitoring reminding effect is prevented from being reduced.

Description

Technical Field

[0001] This invention relates to the field of photographic equipment technology, and in particular to a video surveillance and alert device. Background Technology

[0002] Safety in production is the most critical requirement at construction sites. Wearing safety helmets is the most basic safety measure for construction workers entering the site. In order to monitor whether construction workers are wearing safety helmets, video surveillance and reminder equipment needs to be installed at the construction site.

[0003] Construction sites are typically large areas. To achieve comprehensive video surveillance, a 360-degree multi-position shooting structure for VR live streaming, as proposed in announcement number CN209072583U, can be considered. This structure includes a height-adjustable fixed pole, vertically positioned, with a frame arranged 360 degrees around its top. Multiple mounting positions are spaced apart 360 degrees around the top of the fixed pole, and each position is equipped with a camera that communicates with control and processing equipment. By utilizing this existing shooting structure in conjunction with an alert device to monitor whether construction workers are wearing safety helmets, comprehensive video surveillance and alerts can be achieved, thus enabling effective supervision.

[0004] It's important to understand that dust pollution at construction sites is often severe. Dust can easily accumulate on camera lenses, affecting their ability to effectively monitor and alert users to wearing safety helmets. Therefore, regular cleaning of camera lenses is necessary. To ensure uninterrupted video surveillance, cameras at circumferential intervals can be turned off and cleaned sequentially. However, this can create significant blind spots at the cleaned locations, reducing the effectiveness of video monitoring alerts. Summary of the Invention

[0005] In order to avoid creating large blind spots due to cleaning the camera lens, thereby avoiding a reduction in the effectiveness of video surveillance alerts, this application provides a video surveillance alert device.

[0006] The video surveillance alert device provided by this invention adopts the following technical solution: A video surveillance alert device includes a fixed pole, cameras, and an audio alert device. The fixed pole is circumferentially spaced with multiple lifting components. Each lifting component is connected to a mounting plate and controls the mounting plate to lift. Multiple cameras are rotatably mounted on the mounting plates and connected to a rotation drive component. The audio alert device is mounted on the fixed pole. A server is connected between the cameras and the audio alert device to form a monitoring alert system. When the camera to be cleaned is lowered under the control of the lifting assembly and creates a first monitoring blind zone, the camera adjacent to it on one side is rotated towards the first monitoring blind zone under the control of the rotation drive. When the cleaned camera is raised under the control of the lifting assembly, the camera adjacent to it on one side is rotated back to its original position under the control of the rotation drive.

[0007] Preferably, the lifting assembly includes a first lead screw mechanism and a first motor. The first lead screw mechanism is vertically arranged on the side of the fixed rod. The first motor is connected to the first lead screw mechanism and drives the first lead screw mechanism to operate. The camera is movably connected to the first lead screw mechanism through the mounting plate. The rotation drive component is a second motor.

[0008] Preferably, the camera can rise during the rotation towards the first blind spot, and the camera can descend during the rotation and reset process.

[0009] Preferably, a first rotating shaft is rotatably mounted on the mounting plate, and a second motor is fixedly mounted on the mounting plate, with the output shaft of the second motor coaxially and fixedly connected to the first rotating shaft; a second rotating shaft is inserted into the top of the first rotating shaft; a guide cylinder is mounted on the mounting plate, the guide cylinder is sleeved on the second rotating shaft, and the guide cylinder has a guide groove penetrating its inner and outer walls, the guide groove being formed around the axis of the guide cylinder; a slider is connected to the outer wall of the second rotating shaft, and the slider extends into the guide groove; when the camera rotates towards the first blind spot, the slider moves towards the upper end of the guide groove, causing the second rotating shaft and the camera to rise; when the camera rotates back to its original position, the slider moves towards the lower end of the guide groove, causing the second rotating shaft and the camera to descend.

[0010] Preferably, the mounting plate is further provided with a second lead screw mechanism, and the guide cylinder is movably connected to the second lead screw mechanism. The second lead screw mechanism controls the guide cylinder to rise and fall. A first gear is fixedly sleeved on the first rotating shaft, and a second gear is fixedly sleeved on the lead screw of the second lead screw mechanism. The first gear and the second gear mesh. When the first rotating shaft drives the camera to rotate towards the first blind spot, the first gear and the second gear rotate synchronously and control the guide cylinder to rise. When the first rotating shaft drives the camera to rotate and reset, the first gear and the second gear rotate synchronously and control the guide cylinder to fall.

[0011] Preferably, the top of the first rotating shaft is connected to a plug rod, and the top of the plug rod of the first rotating shaft is provided with an electromagnet. The electromagnet is connected to the same circuit switch as the first motor. The bottom of the second rotating shaft is provided with a socket, and the inner end of the socket of the second rotating shaft is provided with a magnetic block.

[0012] Preferably, the fixing rod is a hexagonal rod with six sides, and six cameras are provided, with each of the six cameras being installed on one of the six sides of the fixing rod.

[0013] Preferably, the first gear is a large gear and the second gear is a small gear.

[0014] Preferably, the mounting plate is provided with a bearing, and the first rotating shaft is rotatably mounted on the mounting plate through connection with the bearing.

[0015] Preferably, the slider is a roller, and the roller is rotatably connected to the second rotating shaft.

[0016] The beneficial effects of this invention are as follows: 1. When the camera detects that construction workers are not wearing safety helmets, the sound reminder device can issue a warning to remind the workers to wear safety helmets, thereby realizing the video monitoring reminder function; 2. When it is necessary to clean one of the cameras, the lifting assembly can be used to control the camera's lowering height so that the camera can be turned off and cleaned. After cleaning is completed, the lifting assembly can be used again to control the camera's raising height and eventually return it to the monitoring position. 3. When one of the cameras is being lowered for cleaning, the camera on the adjacent side can rotate its view towards the first blind spot, reducing the monitoring blind spot caused by the camera cleaning, and ultimately avoiding the creation of a large monitoring blind spot, thereby avoiding a reduction in the video monitoring and alerting effect. 4. Under the control of the second motor, the camera can rotate and rise towards the first monitoring blind zone, thereby further reducing the range of the second and third monitoring blind zones and ensuring the working effect of the monitoring and alerting equipment; 5. When the camera rotates towards the first blind spot, the rise of the guide cylinder can increase the height of the upper end of the guide groove, thereby increasing the height of the slider, and ultimately increasing the height of the second rotating shaft and the camera, so that the camera's field of view can be greatly improved, so as to further reduce the range of the second and third blind spots. 6. When the first motor is powered on and controls the camera to rise and fall, the electromagnet is simultaneously powered on and attracts the magnetic block, so that the first rotating shaft and the second rotating shaft are fixedly connected at this time, which prevents the second rotating shaft from separating or vibrating too much during the process of rising and falling with the first rotating shaft, thus providing better protection for the camera. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the video surveillance and alert device in the embodiments of this application; Figure 2 This is a partial schematic diagram of the video surveillance and alert device in an embodiment of this application; Figure 3 yes Figure 2 Enlarged view of point A in the image; Figure 4 This is a top view of the video surveillance and alert device in the embodiments of this application; Figure 5 This is a top-down view of the video surveillance alert device in this embodiment after one of the cameras has been lowered; Figure 6 This is a schematic diagram of the structure of one of the cameras in the video surveillance reminder device in this embodiment of the application after it has been rotated to the first blind spot.

[0018] Explanation of reference numerals in the attached drawings: 1. Fixed rod; 2. Camera; 3. Sound reminder device; 41. First lead screw mechanism; 42. First motor; 5. Mounting plate; 51. Bearing; 52. Second motor; 61. First rotating shaft; 611. Insert rod; 62. Second rotating shaft; 621. Slider; 7. Guide cylinder; 71. Guide groove; 8. Second lead screw mechanism; 91. First gear; 92. Second gear. Detailed Implementation

[0019] The following will be combined with the appendix Figure 1-6 The present invention will be further illustrated by the embodiments.

[0020] This embodiment discloses a video surveillance alert device.

[0021] Reference Figure 1 and Figure 2The video surveillance and alert device includes a fixed pole 1, which is vertically installed at the construction site. Multiple cameras 2 are spaced circumferentially on the fixed pole 1 to achieve omnidirectional video surveillance. In this embodiment, the fixed pole 1 is hexagonal, meaning its cross-section is hexagonal, giving it six sides. Six cameras 2 are installed on the six sides of the fixed pole 1, corresponding to each other. An audio alert device 3 is located at the top of the fixed pole 1. The cameras 2 communicate with the audio alert device 3 via a server to form a monitoring and alert system. When a camera 2 detects that a construction worker is not wearing a safety helmet, the audio alert device 3 issues a warning to remind the worker to wear a safety helmet, thus achieving the video surveillance and alert function. In this embodiment, the audio alert device 3 is a speaker.

[0022] The server includes a video storage service unit and a video analysis service unit. After capturing images of the construction site, camera 2 encodes and packages them into a standard RTSP video stream and transmits it to the server. The video storage service unit on the server stores the video stream, while the video analysis service unit analyzes the video and determines whether any workers are not wearing safety helmets. If so, the server sends an alarm message to the sound alert device 3, causing the device to emit an audible alert to remind on-site construction workers to wear their safety helmets. In this monitoring and alert system, data transmission between camera 2, the server, and the sound alert device occurs via a network.

[0023] Reference Figure 1 and Figure 2 To maximize the field of view of the multiple cameras 2 and capture more footage of the construction site, the height of the cameras 2 needs to be set relatively high. This makes cleaning the lenses of the cameras 2 more difficult. Therefore, multiple lifting components are spaced circumferentially on the fixed rod 1, with the number of lifting components corresponding to the number of cameras 2. This allows each camera 2 to be mounted on a corresponding lifting component, enabling it to be lowered before cleaning and reducing cleaning difficulty. Specifically, the lifting components include a first lead screw mechanism 41 and a first motor 42. The first lead screw mechanism 41 is vertically mounted on the side of the fixed rod 1, and the first motor 42 is connected to and drives the first lead screw mechanism 41. Furthermore, the first lead screw mechanism 41 is movably connected to the camera 2, allowing it to control the raising and lowering of the camera 2. With this setup, when cleaning is required for one of the cameras 2, the lifting components can be used to control the camera 2's lowering height for shutdown and cleaning. After cleaning, the lifting components can be used again to control the camera 2's raising height, eventually returning it to the monitoring position. In addition, a control cabinet is installed at the bottom of the fixed rod 1 so that relevant personnel can control the raising and lowering of the camera 2.

[0024] Reference Figures 2 to 6 When one of the cameras 2 descends for cleaning, a first monitoring blind spot is created. This first monitoring blind spot is relatively large and can easily affect the video monitoring alert effect. Therefore, the following improvements are made in this invention. A mounting plate 5 is connected between the camera 2 and the first lead screw mechanism 41. The camera 2 and the first lead screw mechanism 41 are movably connected through the mounting plate 5. That is, the first lead screw mechanism 41 first drives the mounting plate 5 to rise and fall, and the mounting plate 5 then drives the camera 2 to rise and fall. In addition, the camera 2 is rotatably mounted on the mounting plate 5. The mounting plate 5 is also equipped with a rotation drive component that controls the rotation of the camera 2. The rotation drive component is a second motor 52. The video monitoring equipment also includes a controller. By writing a corresponding control program, when the camera 2 to be cleaned is lowered under the control of the first motor 42, the adjacent camera 2 on one side is rotated towards the first monitoring blind spot under the control of the second motor 52. When the cleaned camera 2 is raised under the control of the first motor 42, the adjacent camera 2 on one side is rotated back to its original position under the control of the second motor 52. With the above configuration, when one of the cameras 2 is lowered for cleaning, the adjacent camera 2 can rotate its viewing angle towards the first blind zone, reducing the blind zone caused by the cleaning of the camera 2 and ultimately avoiding a large blind zone, thus preventing a reduction in the video monitoring alert effect. In this embodiment, when one of the cameras 2 needs to be lowered for cleaning, the camera 2 that rotates towards the first blind zone is the adjacent camera 2 in a clockwise direction. It should be noted that although rotating the corresponding camera 2 using the second motor 52 will create another blind zone on the other side of the rotation direction, resulting in two blind zones, namely the second blind zone and the third blind zone, both the second and third blind zones are small. Compared to creating a single and large first blind zone, they have a smaller impact, thus ensuring the monitoring alert effect of the device at this time.

[0025] Reference Figure 3 and Figure 6 To further reduce the range of the second and third monitoring blind spots, camera 2 can be raised during its rotation towards the first monitoring blind spot and lowered during its rotation to return to its original position. Since camera 2 provides a wider monitoring angle when raised, raising it during its rotation towards the cleaning position reduces the range of the second and third monitoring blind spots, further ensuring the effectiveness of the monitoring and alerting device.

[0026] Continue to refer to Figure 3 and Figure 6To enable the camera 2 to rotate and rise under the control of the second motor 52, a first rotating shaft 61 is rotatably mounted on the mounting plate 5. The axis of the first rotating shaft 61 is vertical, and the first rotating shaft 61 vertically penetrates the mounting plate 5. The second motor 52 is fixedly mounted at the bottom of the mounting plate 5, and the output shaft of the second motor 52 is coaxially and fixedly connected to the lower end of the first rotating shaft 61, enabling the second motor 52 to drive the first rotating shaft 61 to rotate. Furthermore, to improve the smoothness of the rotation of the first rotating shaft 61, a bearing 51 is also provided on the mounting plate 5, and the first rotating shaft 61 is rotatably mounted on the mounting plate 5 through its connection with the bearing 51. A second rotating shaft 62 is inserted into the top of the first rotating shaft 61. Both the first and second rotating shafts 61 and 62 are round shafts. A plug rod 611, which is polygonal, is fixedly connected to the top of the first rotating shaft 61. A polygonal insertion hole is formed at the bottom of the second rotating shaft 62. The plug rod 611 of the first rotating shaft 61 is inserted into the insertion hole of the second rotating shaft 62 to achieve the connection between the two shafts. This allows the first rotating shaft 61 to drive the second rotating shaft 62 to rotate, and also allows the second rotating shaft 62 to rise and fall relative to the first rotating shaft 61. The camera 2 is mounted on the second rotating shaft 62. Therefore, the process by which the second motor 52 controls the rotation of the camera 2 is as follows: the second motor 52 first drives the first rotating shaft 61 to rotate, and then the first rotating shaft 61 drives the second rotating shaft 62 to rotate via the plug rod 611. Finally, the second rotating shaft 62 drives the camera 2 to rotate. Furthermore, a guide cylinder 7 is mounted on the mounting plate 5, and the guide cylinder 7 is sleeved on the second rotating shaft 62. The guide cylinder 7 has a guide groove 71 that penetrates its inner and outer walls. The guide groove 71 is formed around the axis of the guide cylinder 7. In this embodiment, the guide groove 71 is formed from bottom to top in a counterclockwise direction. A slider 621 is connected to the outer wall of the second rotating shaft 62. The slider 621 extends into the guide groove 71. When the camera 2 is controlled by the second motor 52 to rotate towards the first monitoring blind zone, the slider 621 moves towards the upper end of the guide groove 71, causing the second rotating shaft 62 to rise, thereby causing the camera 2 to rise, thereby increasing its field of view and ultimately reducing the range of the second and third monitoring blind zones. When the camera 2 is controlled by the second motor 52 to rotate back to its original position, the slider 621 moves towards the lower end of the guide groove 71, causing the second rotating shaft 62 to fall, thereby causing the camera 2 to fall again. Through the above settings, the camera 2 can rotate and rise towards the first monitoring blind zone under the control of the second motor 52, thereby further reducing the range of the second and third monitoring blind zones, ensuring the working effect of the monitoring and alerting device, and also enabling the camera 2 to rotate, reset, and descend under the control of the second motor 52. Furthermore, in this embodiment, the slider 621 is a roller, and the roller is rotatably connected to the second rotating shaft 62 to improve the smoothness of the slider 621's movement within the guide groove 71.

[0027] Continue to refer to Figure 3and Figure 6 The mounting plate 5 is also equipped with a second lead screw mechanism 8, and the guide cylinder 7 is movably connected to the second lead screw mechanism 8. The second lead screw mechanism 8 controls the lifting and lowering of the guide cylinder 7. In addition, a first gear 91 is fixedly sleeved on the first rotating shaft 61, and a second gear 92 is fixedly sleeved on the lead screw of the second lead screw mechanism 8. The first gear 91 and the second gear 92 mesh. It is further configured that when the first rotating shaft 61 drives the camera 2 to rotate towards the first monitoring blind zone, the first gear 91 and the second gear 92 rotate synchronously and control the guide cylinder 7 to rise. When the first rotating shaft 61 drives the camera 2 to rotate back to its original position, the first gear 91 and the second gear 92 rotate synchronously and control the guide cylinder 7 to descend. Through the above settings, when the camera 2 rotates towards the first monitoring blind zone, the rising of the guide cylinder 7 can increase the height of the upper end of the guide groove 71, thereby increasing the rising height of the slider 621, and ultimately increasing the rising height of the second rotating shaft 62 and the camera 2, so that the viewing angle of the camera 2 is greatly improved, thereby further reducing the range of the second and third monitoring blind zones. Furthermore, the first gear 91 is a large gear and the second gear 92 is a small gear, which makes the rotation angle of the second gear 92 larger during the synchronous rotation of the first gear 91 and the second gear 92, thereby increasing the lifting range of the second lead screw mechanism 8, thus increasing the lifting range of the guide cylinder 7, and ultimately making the camera 2 have a larger lifting range when turning.

[0028] Continue to refer to Figure 3 and Figure 6 An electromagnet is installed at the top of the insertion rod 611 of the first rotating shaft 61. The electromagnet is connected to the same circuit switch as the first motor 42, so that the electromagnet and the first motor 42 are energized or de-energized at the same time. A magnetic block is installed at the inner end of the insertion hole of the second rotating shaft 62. When the electromagnet is energized, the electromagnet and the magnetic block attract each other. The purpose of the above settings is that when the first motor 42 is energized and controls the camera 2 to rise and fall, the electromagnet is simultaneously energized and attracts each other to the magnetic block, so that the first rotating shaft 61 and the second rotating shaft 62 are fixedly connected at this time, so as to avoid the second rotating shaft 62 from separating or vibrating too much during the process of rising and falling with the first rotating shaft 61, thereby providing a better protection effect for the camera 2.

[0029] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A video surveillance alert device, characterized in that: The system includes a fixed pole (1), a camera (2), and a sound alert device (3). The fixed pole (1) is circumferentially spaced with multiple lifting components. Each lifting component is connected to a mounting plate (5) and controls the mounting plate (5) to lift. Multiple cameras (2) are rotatably mounted on multiple mounting plates (5) and connected to a rotation drive component. The sound alert device (3) is mounted on the fixed pole (1). A server is connected between the camera (2) and the sound alert device (3) to form a monitoring and alert system. When the camera (2) to be cleaned is lowered under the control of the lifting assembly and creates a first monitoring blind zone, the camera (2) adjacent to it on one side is rotated in the direction of the first monitoring blind zone under the control of the rotation drive. When the cleaned camera (2) is raised under the control of the lifting assembly, the camera (2) adjacent to it on one side is rotated and reset under the control of the rotation drive.

2. The video surveillance alert device according to claim 1, characterized in that: The lifting assembly includes a first lead screw mechanism (41) and a first motor (42). The first lead screw mechanism (41) is vertically arranged on the side of the fixed rod (1). The first motor (42) is connected to the first lead screw mechanism (41) and drives the first lead screw mechanism (41) to run. The camera (2) is movably connected to the first lead screw mechanism (41) through the mounting plate (5). The rotation drive is a second motor (52).

3. The video surveillance alert device according to claim 2, characterized in that: The camera (2) can rise during the process of rotating towards the first blind spot, and the camera (2) can descend during the process of rotating and resetting.

4. The video surveillance alert device according to claim 3, characterized in that: A first rotating shaft (61) is rotatably mounted on the mounting plate (5). A second motor (52) is fixedly mounted on the mounting plate (5). The output shaft of the second motor (52) is coaxially and fixedly connected to the first rotating shaft (61). A second rotating shaft (62) is inserted into the top of the first rotating shaft (61). A guide cylinder (7) is mounted on the mounting plate (5). The guide cylinder (7) is sleeved on the second rotating shaft (62). The guide cylinder (7) has a guide groove (71) that penetrates its inner and outer walls. The guide groove (71) surrounds the guide cylinder (7). The second rotating shaft (62) is axially mounted on the guide cylinder (7). A slider (621) is connected to the outer wall of the second rotating shaft (62). The slider (621) extends into the guide groove (71). When the camera (2) rotates to the first blind spot, the slider (621) moves to the upper end of the guide groove (71), causing the second rotating shaft (62) and the camera (2) to rise. When the camera (2) rotates back to its original position, the slider (621) moves to the lower end of the guide groove (71), causing the second rotating shaft (62) and the camera (2) to fall.

5. A video surveillance alert device according to claim 4, characterized in that: The mounting plate (5) is also provided with a second lead screw mechanism (8). The guide cylinder (7) is movably connected to the second lead screw mechanism (8). The second lead screw mechanism (8) controls the guide cylinder (7) to rise and fall. A first gear (91) is fixedly sleeved on the first rotating shaft (61). A second gear (92) is fixedly sleeved on the lead screw of the second lead screw mechanism (8). The first gear (91) and the second gear (92) mesh. When the first rotating shaft (61) drives the camera (2) to rotate in the direction of the first monitoring blind zone, the first gear (91) and the second gear (92) rotate synchronously and control the guide cylinder (7) to rise. When the first rotating shaft (61) drives the camera (2) to rotate and reset, the first gear (91) and the second gear (92) rotate synchronously and control the guide cylinder (7) to fall.

6. A video surveillance alert device according to claim 4, characterized in that: The top of the first rotating shaft (6) is connected to a plug rod (611), and an electromagnet is provided on the top of the plug rod (611) of the first rotating shaft (61). The electromagnet is connected to the same circuit switch as the first motor (42). A plug hole is provided at the bottom of the second rotating shaft (62), and a magnetic block is provided at the inner end of the plug hole of the second rotating shaft (62).

7. A video surveillance alert device according to claim 1, characterized in that: The fixing rod (1) is a hexagonal rod with six sides. There are six cameras (2), which are installed on the six sides of the fixing rod (1) in a one-to-one correspondence.

8. A video surveillance alert device according to claim 5, characterized in that: The first gear (91) is a large gear, and the second gear (92) is a small gear.

9. A video surveillance alert device according to claim 4, characterized in that: The mounting plate (5) is provided with a bearing (51), and the first rotating shaft (61) is rotatably mounted on the mounting plate (5) through its connection with the bearing (51).

10. A video surveillance alert device according to claim 4, characterized in that: The slider (621) is a roller, and the roller is rotatably connected to the second rotating shaft (62).

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