All-time video monitoring and abnormal behavior intelligent identification monitoring device and system

Abstract

The invention relates to the field of monitoring equipment, in particular to all-time video monitoring and abnormal behavior intelligent identification monitoring equipment and system, and the equipment comprises a mounting plate, a connecting seat is fixed at one end of the mounting plate, and a mounting seat is rotatably mounted below the connecting seat; a plane mirror is mounted at the lower end of the suspender, and the mirror surface of the plane mirror faces the monitoring camera; a swing rod is rotationally mounted in the driving protective cover, a fixed shaft movably penetrates through the middle of the swing rod, and the fixed shaft is fixedly connected with the driving protective cover; the beneficial effects are that the mounting seat is obliquely arranged, the plane mirror is vertically mounted right in front of the mounting seat, the mirror surface of the plane mirror faces the mounting seat, and the suspender can horizontally rotate or vertically move, so that the plane mirror is driven to synchronously move along with the suspender; according to the device, the monitoring range of the monitoring camera can be effectively enlarged, so that a series of related problems caused by cable winding are avoided.

Description

Technical Field

[0001] The present invention relates to the field of monitoring equipment, and in particular to a full-time video monitoring and abnormal behavior intelligent identification monitoring equipment and system. Background Art

[0002] The combination of video surveillance and computer vision technology, with the help of the powerful data processing capabilities of computers, can perform high-speed analysis of massive amounts of data in the video footage. During full-time video surveillance, abnormal behavior in the video footage can be intelligently identified.

[0003] At present, a Chinese invention with publication number CN115183093B discloses a security warning intelligent recognition video monitoring system, which can improve the detection range of the monitoring device body through the motion trajectory of the monitoring device body.

[0004] However, since the monitor itself is an electrical device, it needs to be connected to external cables such as power lines and signal transmission lines when it is working. When the monitor moves itself to increase the monitoring range, the cables connected to it are prone to entanglement with each other or around surrounding objects, thereby causing damage to the cables and affecting the normal operation of the monitor itself. To this end, the present invention proposes a full-time video monitoring and abnormal behavior intelligent identification monitoring device and system to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a full-time video monitoring and abnormal behavior intelligent identification monitoring device and system to solve the problem that when the monitoring instrument proposed in the above background technology moves itself to increase the monitoring range, the cables connected to it are prone to entanglement or even damage.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a full-time video monitoring and abnormal behavior intelligent identification monitoring device, comprising: A mounting plate, one end of which is fixed with a connecting seat, a mounting seat is rotatably mounted below the connecting seat, and a monitoring camera is arranged on the mounting seat; A suspension rod, the suspension rod is movably mounted on the other end of the mounting plate, a plane mirror is mounted on the lower end of the suspension rod, and the mirror surface of the plane mirror faces the surveillance camera; A driving protective cover is installed on the surface of the mounting plate, a swing rod is rotatably installed inside the driving protective cover, a fixed shaft is movably provided through the middle of the swing rod, and the fixed shaft is fixedly connected to the driving protective cover, both ends of the swing rod are provided with sliding grooves, and a pin shaft is movably inserted through the inner cavity of the sliding groove, one of the pin shafts is fixed at the surface edge of the turntable, and the turntable is driven to rotate by the motor, and the other pin shaft drives the suspension rod to move through the transmission mechanism.

[0007] Preferably, the transmission mechanism includes a sliding plate and a transmission gear, the transmission gear is fixedly sleeved on the outside of the suspension rod, the sliding plate is fixedly connected to another pin shaft, a straight tooth groove is opened on the side of the sliding plate and is meshed with the transmission gear for transmission, and a T-shaped slide is fixed on the surface of the sliding plate and is slidably connected to the surface of the mounting plate.

[0008] Preferably, the transmission mechanism includes a sliding plate 2 and a sliding rod, the sliding rod is fixed to the upper end of the suspension rod, the sliding rod is arranged to be a polygonal structure and is movably connected to the mounting plate, the sliding plate 2 is fixedly installed on the outer side of the sliding rod, and the sliding plate 2 is fixedly connected to another pin shaft.

[0009] Preferably, a countersunk hole is formed through the side of the sliding rod away from the sliding plate 2, a fixing bolt is threadedly connected through the inner cavity of the countersunk hole, one end of the fixing bolt is fixedly plugged into the sliding plate 2 through a thread, and a gap is left between the sliding plate 2 and the sliding rod.

[0010] Preferably, a stud is threadedly inserted at the lower end of the suspension rod, a polygonal insertion rod is fixed to the lower end of the stud, and a washer movably mounted on the outside of the stud is provided between the polygonal insertion rod and the suspension rod, a protrusion is provided on the back of the plane mirror and a polygonal through hole is penetrated therethrough, and the polygonal insertion rod movably penetrates the inner cavity of the polygonal through hole and is fastened by a nut.

[0011] Preferably, hanging plates are fixed on both sides of the lower surface of the connecting seat, the mounting seat is rotatably mounted between the two hanging plates, and columnar bosses are provided on both side surfaces of the mounting seat and are movably connected to the hanging plates.

[0012] Preferably, a polygonal slot is provided on the boss on the side of the mounting seat, an adjusting knob is provided at the end of the boss, a polygonal bulge is fixed on the surface of the adjusting knob, and the polygonal bulge is movably inserted into the inner cavity of the polygonal slot and adapted thereto.

[0013] Preferably, an annular gear ring is fixedly provided at the surface edge of the adjusting knob, and an annular gear groove corresponding to the adjusting knob is opened on the surface of the hanging plate, and the annular gear groove and the annular gear ring are meshed with each other.

[0014] Preferably, a recessed groove is provided in the middle of the adjusting knob, a clamping bolt is movably provided through the inner cavity of the recessed groove, one end of the clamping bolt is threadedly connected to the bottom of the polygonal slot, a clamping spring is sleeved on the outer side of the clamping bolt, and the clamping spring rests on the other end of the clamping bolt and the inner wall of the polygonal protrusion, an elastic sealing plate is bonded and fixed to the open end of the recessed groove, and a "cross" shaped incision is provided on the surface of the elastic sealing plate.

[0015] A monitoring system comprises the above-mentioned monitoring device.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention tilts the mounting seat, and a plane mirror is vertically installed in front of the mounting seat, with the mirror surface of the plane mirror facing the mounting seat. The plane mirror is fixed to the lower end of the suspension rod, and the suspension rod is movably installed on the mounting plate and driven to move by a swing rod inside the driving protective cover. According to the different planes in which the driving protective cover is swung, the suspension rod can rotate horizontally or move up and down, thereby driving the plane mirror to move synchronously with the suspension rod. Therefore, the picture monitored by the monitoring camera on the mounting seat can change with the movement of the plane mirror. Without moving the mounting seat and the monitoring camera, the device can effectively increase the monitoring range of the monitoring camera, thereby avoiding a series of related problems caused by cable entanglement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded schematic diagram of the plane mirror and the suspension rod structure of the present invention; Figure 3 It is an exploded schematic diagram of the mounting seat and the connecting seat structure of the present invention; Figure 4 This is a schematic cross-sectional view of the adjusting knob structure of the present invention; Figure 5 This is a schematic diagram of horizontal installation of the swing arm structure in Embodiment 1 of the present invention; Figure 6 It is a three-dimensional schematic diagram of the transmission mechanism structure in the first embodiment of the present invention; Figure 7 It is a three-dimensional schematic diagram of the structure of a sliding plate in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the vertical installation of the drive protection cover structure in the second embodiment of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the transmission mechanism structure in the second embodiment of the present invention; Fig.10 It is a three-dimensional schematic diagram of the sliding rod structure in the second embodiment of the present invention.

[0018] In the figure: 1. mounting plate; 2. connecting seat; 21. hanging plate; 22. annular tooth groove; 3. mounting seat; 31. polygonal slot; 32. adjusting knob; 321. polygonal protrusion; 322. annular gear ring; 323. recessed groove; 324. clamping bolt; 325. clamping spring; 326. elastic sealing plate; 4. monitoring camera; 5. hanging rod; 51. polygonal plug rod; 52. stud; 53. washer; 6. plane mirror; 61. polygonal through hole; 7. driving protective cover; 71. swing rod; 72. fixed shaft; 73. slide groove; 74. pin shaft; 75. turntable; 8. transmission mechanism; 81. sliding plate one; 811. straight tooth groove; 812. T-type slide plate; 82. transmission gear; 83. sliding plate two; 84. sliding rod; 841. countersunk hole; 85. fixing bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 10 , the present invention provides a technical solution: Embodiment 1, a full-time video monitoring and abnormal behavior intelligent identification monitoring device, includes: a mounting plate 1, a suspension rod 5 and a drive protection cover 7.

[0021] Specifically, a connecting seat 2 is fixed at one end of the mounting plate 1, a mounting seat 3 is rotatably mounted below the connecting seat 2, a monitoring camera 4 is arranged on the mounting seat 3, and the mounting seat 3 can be rotated and tilted at a certain angle in the vertical direction to change the monitoring direction of the monitoring camera 4; Secondly, the suspension rod 5 is movably mounted on the other end of the mounting plate 1, and a plane mirror 6 is mounted on the lower end of the suspension rod 5, the mirror surface of the plane mirror 6 faces the monitoring camera 4, and the monitoring camera 4 cooperates with the plane mirror 6 to change the monitoring area. When the plane mirror 6 rotates and moves, the monitoring camera 4 can monitor a larger range in the horizontal area. When the plane mirror 6 moves vertically, the monitoring camera 4 can monitor the area directly in front of it or monitor the area directly behind it through reflection from the plane mirror 6. Therefore, according to actual use requirements, the suspension rod 5 can be rotatably connected to the mounting plate 1, or can be vertically relatively slidably connected to the mounting plate 1, which is specifically embodied in: ① When the device is installed in an area with a large horizontal dimension such as a park or a square, the suspension rod 5 is connected to the mounting plate 1 in a rotational manner. When the suspension rod 5 reciprocates, the plane mirror 6 swings back and forth accordingly. The surveillance camera 4 can monitor a large area in the horizontal area through the reflection of the plane mirror 6; ② When the device is installed in a sidewalk, laneway or other area with a small width but a large length, the suspension rod 5 maintains a vertical relative sliding connection with the mounting plate 1. When the suspension rod 5 moves up, the plane mirror 6 moves up accordingly and is offset from the monitoring camera 4. The monitoring camera 4 can monitor the area directly in front of it. When the suspension rod 5 moves down, the plane mirror 6 moves down accordingly and blocks the monitoring camera 4 directly in front of it. At this time, through the reflection of the plane mirror 6, the monitoring camera 4 can monitor the area directly behind it, thereby realizing the monitoring of both ends of a long road (laneway, etc.); Furthermore, the driving protective cover 7 is installed on the surface of the mounting plate 1, and a swing rod 71 is rotatably installed inside the driving protective cover 7. A fixed shaft 72 is movably provided in the middle of the swing rod 71, and the fixed shaft 72 is fixedly connected to the driving protective cover 7. The swing rod 71 can only rotate around the fixed shaft 72 at a certain angle. Slide grooves 73 are provided at both ends of the swing rod 71, and a pin shaft 74 is movably inserted into the inner cavity of the slide groove 73. One pin shaft 74 is fixed to the surface edge of the turntable 75, and the turntable 75 is driven to rotate by a motor. Therefore, during the continuous rotation of the turntable 75, the swing rod 71 can swing back and forth around the fixed shaft 72, and the other pin shaft 74 drives the suspension rod 5 to move through the transmission mechanism 8. When the swing rod 71 swings back and forth, the other pin shaft 74 can drive the suspension rod 5 to rotate or move back and forth through the transmission mechanism 8.

[0022] In order to drive the suspension rod 5 to reciprocate, the transmission mechanism 8 of the present application includes a sliding plate 81 and a transmission gear 82. The transmission gear 82 is fixedly sleeved on the outer side of the suspension rod 5. The sliding plate 81 is fixedly connected to another pin shaft 74. A straight tooth groove 811 is opened on the side of the sliding plate 81 and meshes with the transmission gear 82 for transmission. Figure 6 As shown, when the swing rod 71 swings back and forth, the sliding plate 81 is driven by another pin shaft 74 to slide back and forth along its own length direction, and then drives the suspension rod 5 to rotate back and forth through the engagement between the straight tooth groove 811 and the transmission gear 82. At this time, the plane mirror 6 can rotate back and forth in the horizontal direction. Therefore, when installing the plane mirror 6, the plane mirror 6 is kept corresponding to the monitoring camera 4, and the monitoring camera 4 can increase the monitoring of the surrounding area with the help of the reciprocating plane mirror 6. In addition, a T-shaped slide plate 812 is fixed on the surface of the sliding plate 81 and is slidably connected to the surface of the mounting plate 1. The surface of the mounting plate 1 is provided with a T-shaped groove compatible with the T-shaped slide plate 812, which ensures that the sliding plate 81 can only slide along its own length direction without position displacement causing separation from the straight tooth groove 811 and the transmission gear 82.

[0023] In order to connect the plane mirror 6 to the suspension rod 5, the present application also has a stud 52 threadedly inserted at the lower end of the suspension rod 5, a polygonal plug 51 is fixed to the lower end of the stud 52, and a washer 53 movably sleeved on the outside of the stud 52 is provided between the polygonal plug 51 and the suspension rod 5. Figure 2 As shown, the washer 53 is placed between the polygonal plug rod 51 and the suspension rod 5. When the stud 52 is tightened on the suspension rod 5, the washer 53 can increase the friction between the two, thereby preventing the polygonal plug rod 51 from being separated from the suspension rod 5 due to its own inertia during the rotation of the suspension rod 5. In addition, a protrusion is provided on the back of the plane mirror 6 and a polygonal through hole 61 is opened through it. The polygonal plug rod 51 movably passes through the inner cavity of the polygonal through hole 61 and is fastened by a nut. The polygonal plug rod 51 can be kept fixed with the plane mirror 6 to ensure that the plane mirror 6 can move synchronously with the movement of the suspension rod 5.

[0024] In order to rotatably install the mounting seat 3, the present application also has hanging plates 21 fixed on both sides of the lower surface of the connecting seat 2, the mounting seat 3 is rotatably installed between the two hanging plates 21, and both sides of the mounting seat 3 are provided with columnar bosses and movably plugged with the hanging plates 21, such as Figure 3 As shown, the mounting base 3 can be rotated at a certain angle in the vertical direction, thereby changing the orientation of the monitoring camera 4 so that the monitoring camera 4 is tilted downward to monitor the area directly in front of it.

[0025] In order to adjust the angle of the mounting seat 3, the present application also has a polygonal slot 31 on the boss on the side of the mounting seat 3, an adjusting knob 32 is provided at the end of the boss, a polygonal convex block 321 is fixed on the surface of the adjusting knob 32, and the polygonal convex block 321 is movably plugged into the inner cavity of the polygonal slot 31 and adapted thereto, combined with Figure 3 and Figure 4 As shown, the staff can drive the mounting base 3 to rotate synchronously by turning the adjustment knob 32.

[0026] In order to position the mounting base 3, the present application also has an annular gear ring 322 fixedly arranged at the surface edge of the adjusting knob 32, and the surface of the hanging plate 21 is provided with an annular gear groove 22 corresponding to the adjusting knob 32, and the annular gear groove 22 is meshed with the annular gear ring 322, and the cooperation between the annular gear ring 322 and the annular gear groove 22 is used to limit the rotation of the adjusting knob 32, thereby limiting the rotation of the mounting base 3, ensuring that the mounting base 3 can maintain its own position stable after adjusting the angle, and will not easily rotate to affect the monitoring area of ​​the surveillance camera 4.

[0027] In order to compress and position the adjusting knob 32, the present application also has a recessed groove 323 in the middle of the adjusting knob 32, and a clamping bolt 324 is movably provided in the inner cavity of the recessed groove 323, and one end of the clamping bolt 324 is threadedly connected to the groove bottom of the polygonal slot 31, and the adjusting knob 32 can move a certain distance along the length direction of the clamping bolt 324. When the adjusting knob 32 moves away from the mounting seat 3, the adjusting knob 32 is separated from the annular tooth groove 22, and the adjusting knob 32 and the mounting seat 3 can automatically rotate to adjust the inclination angle of the mounting seat 3. When the adjusting knob 32 moves close to the mounting seat 3 until it is in contact with the annular tooth groove 22, the annular tooth groove 22 can limit the rotation of the mounting seat 3 to ensure that the mounting seat The position is stable, a compression spring 325 is sleeved on the outer side of the compression bolt 324, and the compression spring 325 is against the other end of the compression bolt 324 and the inner wall of the polygonal protrusion 321, and the compression spring 325 is used to compress and reset the adjusting knob 32 to ensure that the adjusting knob 32 always has a tendency to fit the annular tooth groove 22. In addition, an elastic sealing plate 326 is bonded and fixed to the open end of the recessed groove 323, and a "cross" shaped incision is opened on the surface of the elastic sealing plate 326. The setting of the elastic sealing plate 326 is used to seal and protect the compression spring 325, and the setting of the incision can be inserted into the hexagonal wrench, so as to facilitate the installation and removal of the compression bolt 324 and adjust the compression amount of the compression spring 325.

[0028] Embodiment 2, in order to drive the suspension rod 5 to slide back and forth in the vertical direction, the transmission mechanism 8 of the present application includes a sliding plate 2 83 and a sliding rod 84, the sliding rod 84 is fixed to the upper end of the suspension rod 5, the sliding rod 84 is set to a polygonal structure and is movably connected with the mounting plate 1, that is, the suspension rod 5 can only slide up and down in the vertical direction, the sliding plate 2 83 is fixedly installed on the outer side of the sliding rod 84, the sliding plate 2 83 is fixedly connected to another pin shaft 74, at this time, the swing rod 71 swings in the vertical plane, when the swing rod 71 swings, the sliding plate 2 83 is pulled by another pin shaft 74 and slides back and forth in the vertical direction, and brings The movable suspension rod 5 and the plane mirror 6 slide back and forth in the vertical direction. When the plane mirror 6 moves down to be located directly in front of the monitoring camera 4, the monitoring camera 4 can monitor the area behind it through the reflection of the plane mirror 6. When the plane mirror 6 moves up to be offset from the monitoring camera 4, the monitoring camera 4 can directly monitor the area directly in front of it. In addition, a countersunk hole 841 is penetrated through the side of the sliding rod 84 away from the sliding plate 83. The inner cavity of the countersunk hole 841 is threadedly penetrated and connected with a fixing bolt 85. One end of the fixing bolt 85 is fixedly plugged with the sliding plate 83 through a thread. A gap is left between the sliding plate 83 and the sliding rod 84. Fig.10As shown, the cooperation of the fixing bolt 85 and the countersunk hole 841 can fix the sliding plate 83 on the outside of the sliding rod 84 and ensure that there is a gap between the two, thereby avoiding collision between the end of the swing rod 71 and the sliding rod 84 when the swing rod 71 swings.

[0029] The invention also discloses a monitoring system, comprising the above monitoring device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full-time video monitoring and abnormal behavior intelligent identification monitoring device, characterized by: include: A mounting plate (1), a connecting seat (2) being fixed at one end of the mounting plate (1), a mounting seat (3) being rotatably mounted below the connecting seat (2), and a monitoring camera (4) being arranged on the mounting seat (3); A suspension rod (5), the suspension rod (5) being movably mounted on the other end of the mounting plate (1), a plane mirror (6) being mounted on the lower end of the suspension rod (5), the mirror surface of the plane mirror (6) facing the surveillance camera (4); A driving protective cover (7), wherein the driving protective cover (7) is mounted on the surface of the mounting plate (1), a swinging rod (71) is rotatably mounted inside the driving protective cover (7), a fixed shaft (72) is movably penetrated through the middle of the swinging rod (71), and the fixed shaft (72) is fixedly connected to the driving protective cover (7), both ends of the swinging rod (71) are provided with a slide groove (73), and a pin shaft (74) is movably penetrated and inserted into the inner cavity of the slide groove (73), one of the pin shafts (74) is fixed to the surface edge of a rotating disk (75), and the rotating disk (75) is driven to rotate by a motor, and the other pin shaft (74) drives the suspension rod (5) to move through a transmission mechanism (8).

2. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 1 is characterized by: The transmission mechanism (8) comprises a sliding plate (81) and a transmission gear (82), wherein the transmission gear (82) is fixedly sleeved on the outer side of the suspension rod (5), the sliding plate (81) is fixedly connected to another pin shaft (74), a straight tooth groove (811) is provided on the side of the sliding plate (81) and meshes with the transmission gear (82) for transmission, and a T-shaped slide plate (812) is fixed on the surface of the sliding plate (81) and is slidably connected to the surface of the mounting plate (1).

3. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 1 is characterized by: The transmission mechanism (8) comprises a second sliding plate (83) and a sliding rod (84), wherein the sliding rod (84) is fixed to the upper end of the suspension rod (5), the sliding rod (84) is arranged to have a polygonal structure and is movably connected to the mounting plate (1), the second sliding plate (83) is fixedly mounted on the outer side of the sliding rod (84), and the second sliding plate (83) is fixedly connected to another pin shaft (74).

4. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 3 is characterized by: A countersunk hole (841) is formed through the side of the sliding rod (84) away from the second sliding plate (83), and a fixing bolt (85) is threadedly connected through the inner cavity of the countersunk hole (841). One end of the fixing bolt (85) is fixedly plugged into the second sliding plate (83) through a thread, and a gap is left between the second sliding plate (83) and the sliding rod (84).

5. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 2 or 4, characterized in that: The lower end of the suspension rod (5) is threadedly connected with a stud (52), the lower end of the stud (52) is fixed with a polygonal plug rod (51), and a washer (53) movably sleeved on the outside of the stud (52) is provided between the polygonal plug rod (51) and the suspension rod (5). The back of the plane mirror (6) is provided with a protrusion and penetrated by a polygonal through hole (61), and the polygonal plug rod (51) movably penetrates the inner cavity of the polygonal through hole (61) and is fastened by a nut.

6. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 5 is characterized by: Hanging plates (21) are fixed on both sides of the lower surface of the connecting seat (2), the mounting seat (3) is rotatably mounted between the two hanging plates (21), and columnar bosses are provided on both side surfaces of the mounting seat (3) and are movably plugged with the hanging plates (21).

7. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 6 is characterized by: A polygonal slot (31) is provided on the boss on the side of the mounting seat (3), an adjusting knob (32) is provided at the end of the boss, a polygonal convex block (321) is fixed on the surface of the adjusting knob (32), and the polygonal convex block (321) is movably plugged into the inner cavity of the polygonal slot (31) and adapted thereto.

8. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 7 is characterized by: An annular gear ring (322) is fixedly provided at the edge of the surface of the adjusting knob (32), and an annular gear groove (22) corresponding to the adjusting knob (32) is provided on the surface of the hanging plate (21), and the annular gear groove (22) and the annular gear ring (322) are meshed with each other.

9. The full-time video monitoring and abnormal behavior intelligent identification monitoring equipment according to claim 8 is characterized by: A recessed groove (323) is provided in the middle of the adjusting knob (32), and a clamping bolt (324) is movably provided in the inner cavity of the recessed groove (323), one end of the clamping bolt (324) is threadedly plugged into the groove bottom of the polygonal slot (31), a clamping spring (325) is sleeved on the outer side of the clamping bolt (324), and the clamping spring (325) abuts against the other end of the clamping bolt (324) and the inner wall of the polygonal protrusion (321), an elastic sealing plate (326) is bonded and fixed to the open end of the recessed groove (323), and a "cross" shaped incision is provided on the surface of the elastic sealing plate (326).

10. A monitoring system, characterized in that: The monitoring device comprises any one of claims 1 to 9.

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