Monitoring alarm device suitable for smart city system and working method thereof

Abstract

The invention discloses a monitoring alarm device suitable for a smart city system and a working method thereof, the monitoring alarm device comprises a mounting frame, the two sides of the front end of the mounting frame are provided with a plurality of mounting holes distributed in a rectangular array, and one side of the interior of the mounting frame is provided with a communication module; the device further comprises a connecting base which is arranged under the mounting frame, a high-definition camera is arranged under the connecting base, and the output end of the high-definition camera is electrically connected with the input end of a communication module. According to the monitoring alarm device suitable for the smart city system, the high-definition camera can be adjusted to the optimal shooting angle, the problems of picture distortion, shielding or insufficient light and the like caused by improper angle are effectively avoided, meanwhile, the high-definition camera is convenient to disassemble and assemble, additional tools are not needed in the whole process, and the cost is reduced. And the high-definition camera can be quickly assembled and disassembled only by hand operation, so that the time for maintaining and replacing the high-definition camera is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of urban monitoring and alarm technology, and in particular to a monitoring and alarm device suitable for a smart city system and a working method thereof. Background Art

[0002] The smart city system uses modern information technology and communication technology to sense, analyze and integrate key information of the core system of urban operation, so as to intelligently respond to various needs including people's livelihood, environmental protection, public safety, urban services, industrial and commercial activities, aiming to create a better urban life for mankind. The system is based on new generation information technologies such as the Internet, Internet of Things, cloud computing, big data, etc., and realizes the intelligent and refined urban management and the universal and convenient social services through the integration of intelligent facilities and services. The construction of smart cities covers smart government affairs, smart transportation, smart environmental protection, smart medical care, smart urban management, smart communities and other aspects. It is an important force to promote the sustainable development of cities. The monitoring and alarm device can realize all-round and real-time monitoring of key areas such as urban public areas, transportation, and environment. Once an abnormal situation or safety hazard is detected, the device can quickly analyze the data and automatically trigger the alarm mechanism, which will be immediately conveyed to the relevant departments and personnel so that countermeasures can be taken quickly.

[0003] For example, the Chinese patent "A monitoring and alarm device suitable for smart city systems" with announcement number CN214663555U includes a box installed on the top of the building wall, a control box is arranged on the outer wall of the box, a linear motor module and a drag chain are arranged inside the box, and an opening is formed on the top of the box corresponding to the linear motor module. A rotating motor is arranged on the slide of the linear motor module, and the output shaft of the rotating motor is connected to the bottom end of the L-shaped bend. A high-altitude observation and long-distance monitoring camera and a monitoring radar for monitoring drones are arranged at the head end of the L-shaped bend; a controller module and a communication module are arranged inside the control box, and the controller module is communicated with the external emergency control system through the communication module.

[0004] Although the above-mentioned prior art can improve the monitoring range of high-altitude long-distance surveillance cameras, the monitoring angle of the monitoring alarm device will not change after the monitoring equipment is moved, and its installation position is on the wall. Part of the monitoring screen of the monitoring equipment is the wall, which affects the actual monitoring effect. At the same time, professional tools are required for dismantling the monitoring equipment of the monitoring alarm device. Since the device is installed at a high place, it is inconvenient to carry the disassembly and assembly tools, which affects the actual disassembly and assembly efficiency. Therefore, it does not meet the existing needs. In this regard, we propose a monitoring alarm device suitable for a smart city system and a working method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a monitoring alarm device suitable for a smart city system and a working method thereof, so as to solve the problems proposed in the above background technology that the monitoring angle of the monitoring alarm device is inconvenient to adjust, affecting the actual monitoring effect, and the monitoring equipment is inconvenient to disassemble and replace.

[0006] To achieve the above object, the present invention provides the following technical solution: A monitoring alarm device suitable for a smart city system, comprising a mounting frame, a plurality of mounting holes distributed in a rectangular array are opened on both sides of the front end of the mounting frame, and a communication module is installed on one side inside the mounting frame;

[0007] It also includes a connecting seat, which is arranged directly below the mounting frame, a high-definition camera is arranged below the connecting seat, and the output end of the high-definition camera is electrically connected to the input end of the communication module, four adjusting cavities equidistantly distributed in a ring are opened inside the connecting seat, a first moving block is arranged inside the adjusting cavity, a second moving block is arranged below the first moving block, a first guide rod is arranged on one side of the adjusting cavity, a second guide rod is arranged on the lower side of the adjusting cavity, the first guide rod and the second guide rod are both adhered and fixed to the adjusting cavity, the first guide rod and the first moving block, the second guide rod and the second guide rod are connected through the connecting block, and the connecting blocks are slidably matched with the first guide rod and the second guide rod;

[0008] It also includes a transmission cavity, which is opened inside the installation frame, and a rotating shaft is rotatably arranged inside the transmission cavity. One end of the rotating shaft extends to the outside of the transmission cavity, and a clamping block is installed at the end of the rotating shaft outside the transmission cavity. A clamping slot is opened at the middle position of the upper end of the connecting seat, and the clamping slot is adapted to the clamping block.

[0009] Preferably, a transmission worm wheel is provided on the outer wall of the rotating shaft at one end inside the transmission cavity, a transmission worm is rotatably provided on one side inside the transmission cavity, and worm transmission is performed between the transmission worm and the transmission worm wheel.

[0010] Preferably, a motor is provided at the rear side of the transmission cavity, and the output end of the motor is connected to the transmission worm through a coupling.

[0011] Preferably, a first return spring is sleeved on the upper side of the outer portion of the first guide rod, one end of the first return spring is connected to the adjustment cavity, and the other end of the first return spring is connected to the connection block.

[0012] Preferably, a second return spring is sleeved on one side of the exterior of the second guide rod, one end of the second return spring is connected to the adjustment cavity, and the other end of the second return spring is connected to the connection block.

[0013] Preferably, an annular lifting plate is provided above the connecting seat, and a connecting rod is adhered and fixed to the upper end of the first movable block, one end of the connecting rod extends to the outside of the adjusting cavity, and the connecting rod is slidably matched with the adjusting cavity, and the end of the connecting rod located outside the adjusting cavity is connected to the annular lifting plate.

[0014] Preferably, the outer wall of the second movable block is adhered and fixed with a limiting block, one end of the limiting block passes through and extends to the inside of the card slot, and the limiting block is slidably matched with the card slot, and four limiting grooves equidistantly distributed in a circular shape are opened on the lower side of the outer wall of the card block, and the limiting grooves are adapted to one end of the limiting block located inside the card slot.

[0015] Preferably, an electric telescopic rod is provided on one side of the lower end of the connecting seat, and the output end of the electric telescopic rod is connected to the high-definition camera in an articulated rotational connection, a sliding rod is provided on the other side of the lower end of the connecting seat, and a sliding block is articulated and rotatably connected to one side of the upper end of the high-definition camera, the sliding rod passes through the sliding block, and the sliding rod and the sliding block are slidably matched.

[0016] Preferably, solar panels are arranged on both sides of the front end of the mounting frame, the solar panels and the mounting frame are connected via a connecting frame, a battery is arranged on one side inside the mounting frame, and a photovoltaic controller is arranged on the other side inside the mounting frame, the input end of the photovoltaic controller is electrically connected to the output end of the solar panel, and the output end of the photovoltaic controller is electrically connected to the input end of the battery.

[0017] The working method of the monitoring alarm device applicable to the smart city system comprises the following steps:

[0018] Step 1: Place the mounting frame at the corner of the wall, pass the bolts through the mounting holes to install the mounting frame, absorb sunlight through the solar panel, convert light energy into electrical energy and store it in the battery, the photovoltaic controller charges and generates electricity for protection, and the battery powers the motor and high-definition camera;

[0019] Step 2: Start the motor, the motor rotates the transmission worm through the coupling, the transmission worm rotates the transmission worm wheel through the worm transmission, the transmission worm wheel drives the rotating shaft to rotate, the rotating shaft drives the card block to rotate the connecting seat synchronously, the connecting seat drives the HD camera to rotate to adjust the horizontal angle, start the electric telescopic rod so that its output end drives one end of the HD camera to rotate, the slider on the other end of the HD camera will slide accordingly on the slide bar to achieve the vertical angle adjustment of the HD camera, the HD camera shooting data is generated through the communication module to achieve remote alarm;

[0020] Step three: When dismantling for maintenance of the high-definition camera, pull the annular lifting plate upwards, the annular lifting plate will drive the connecting rod to move upward synchronously, and the connecting rod will drive the first moving block to move upward. The upward movement of the first moving block will compress the first return spring to release the extrusion limit on the second moving block. Under the elastic recovery action of the second return spring, the second moving block will lead the limit block out of the interior of the limit groove to release the limit fixation of the card block, move the connecting seat downward to separate it from the card block, and complete the removal of the high-definition camera. When installing, insert the card block into the interior of the card slot, and the first moving block is moved downward by the elastic recovery action of the first return spring. The downward movement of the first moving block squeezes and pushes the second moving block, so that the second moving block drives the limit block to be inserted into the interior of the limit groove, clamps and fixes the card block, and completes the installation of the high-definition camera.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention has a transmission cavity opened in the mounting frame, and an electric telescopic rod is arranged on the upper end of the high-definition camera. The transmission worm can be rotated by starting the motor in the transmission cavity. Under the worm transmission between the transmission worm and the transmission worm wheel, the transmission worm wheel can drive the rotating shaft to rotate. The rotation of the rotating shaft will drive the connecting seat to adjust the horizontal angle of the high-definition camera, thereby avoiding shooting of the wall. At the same time, the electric telescopic rod can be started, and the output end of the electric telescopic rod will drive one end of the high-definition camera to move up and down. The sliding of the slider on the guide rod ensures the smooth rotation of the high-definition camera, thereby changing the shooting angle of the high-definition camera in the vertical direction, and shooting can be done at a farther distance or a closer distance. The high-definition camera can be adjusted to the best shooting angle, effectively avoiding problems such as picture distortion, occlusion or insufficient light caused by improper angles.

[0023] 2. The present invention provides four adjusting cavities in annular shapes and equidistant distribution inside the connecting seat. When the high-definition camera is disassembled, the operator does not need additional tools. The operator can pull the annular lifting plate downward. The upward movement of the annular lifting plate will drive the connecting rod to move the first moving block upward synchronously. The upward movement of the first moving block will release the extrusion limit on the second moving block. At this time, under the elastic action of the second return spring, the limit block can be led out of the interior of the limit groove, so that the limit on the card block can be released. The operator moves the connecting seat downward to quickly disassemble the high-definition camera. At the same time, when installing, the operator only needs to insert the card block into the interior of the card groove. Under the action of elasticity, the first moving block squeezes and pushes the second moving block, and the second moving block drives the limit block to move into the limit slot, so that the card block can be limited. The clamping and fixing in four directions can firmly fix the card block to prevent the card block from falling out from the inside of the card slot, thereby quickly completing the installation of the high-definition camera. No additional tools are required throughout the process. The installation and disassembly of the high-definition camera can be quickly completed by hand operation, which greatly shortens the time required for maintenance or replacement of equipment. The intuitive and simple operation method reduces the requirements on the skill level of the operator. Even non-professionals can easily get started, reducing the risk of equipment damage caused by improper operation.

[0024] 3. The present invention installs solar panels on both sides of the front end of the installation frame through a connecting frame, and a battery and a photovoltaic controller are provided inside the installation frame. Since the installation frame is installed on a wall at a higher position, most of the obstructions can be avoided. The solar panels can absorb sunlight and convert light energy into electrical energy and store it in the battery. The converted electrical energy is effectively managed and regulated by the photovoltaic controller to ensure stable output and storage of electrical energy. In emergency situations such as power outages, the independent power supply system composed of solar panels and batteries can ensure the normal operation of high-definition cameras and is suitable for monitoring and alarming of smart city systems, thereby providing green and sustainable energy supply, reducing dependence on traditional power grids, and reducing operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic front view of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic side view of the three-dimensional structure of the present invention;

[0027] Figure 3 It is a schematic side view of the internal structure of the present invention;

[0028] Figure 4 It is a top view schematic diagram of the internal structure of the installation frame of the present invention;

[0029] Figure 5 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0030] Figure 6 For the present invention Figure 3 A partial enlarged view of area B in the middle.

[0031] In the figure: 1. Installation frame; 2. Connecting seat; 3. High-definition camera; 4. Electric telescopic rod; 5. Sliding rod; 6. Sliding block; 7. Solar panel; 8. Connecting frame; 9. Transmission cavity; 10. Motor; 11. Transmission worm; 12. Transmission worm wheel; 13. Rotating shaft; 14. Block; 15. Slot; 16. Adjustment cavity; 17. First moving block; 18. Second moving block; 19. First guide rod; 20. First return spring; 21. Second guide rod; 22. Second return spring; 23. Connecting block; 24. Limiting block; 25. Limiting slot; 26. Connecting rod; 27. Annular lifting plate; 28. Photovoltaic controller; 29. ​​Communication module; 30. Battery; 31. Mounting hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] See also Figure 1-6 , an embodiment provided by the present invention: a monitoring alarm device suitable for a smart city system, comprising a mounting frame 1, a plurality of mounting holes 31 distributed in a rectangular array are opened on both sides of the front end of the mounting frame 1, and a communication module 29 is installed on one side inside the mounting frame 1;

[0034] It also includes a connecting seat 2, which is arranged directly below the mounting frame 1, a high-definition camera 3 is arranged below the connecting seat 2, and the output end of the high-definition camera 3 is electrically connected to the input end of the communication module 29, four adjusting cavities 16 are arranged in a circular shape and equidistantly distributed inside the connecting seat 2, a first moving block 17 is arranged inside the adjusting cavity 16, a second moving block 18 is arranged below the first moving block 17, a first guide rod 19 is arranged on one side of the adjusting cavity 16, a second guide rod 21 is arranged on the lower side of the adjusting cavity 16, the first guide rod 19 and the second guide rod 21 are both adhered and fixed to the adjusting cavity 16, the first guide rod 19 and the first moving block 17, the second guide rod 21 and the second guide rod 21 are connected through a connecting block 23, and the connecting block 23 is slidably matched with the first guide rod 19 and the second guide rod 21;

[0035] It also includes a transmission cavity 9, which is opened inside the mounting frame 1. A rotating shaft 13 is rotatably arranged inside the transmission cavity 9. One end of the rotating shaft 13 extends to the outside of the transmission cavity 9. A clamping block 14 is installed at one end of the rotating shaft 13 located outside the transmission cavity 9. A clamping groove 15 is opened at the middle position of the upper end of the connecting seat 2, and the clamping groove 15 is adapted to the clamping block 14.

[0036] When in use, the mounting frame 1 is fixed to the corner of the wall and is firmly installed by bolts passing through the mounting holes 31. The solar panel 7 installed thereon converts sunlight into electrical energy, which is stored in the battery 30, and the photovoltaic controller 28 manages charging and protection. After the motor 10 is started, the transmission system including the transmission worm 11 and the transmission worm wheel 12 drives the rotating shaft 13 and the connecting seat 2 to make the high-definition camera 3 rotate horizontally, and the electric telescopic rod 4 drives the high-definition camera 3 to rotate. The combination of the sliding rod 5 and the sliding block 6 ensures the smooth rotation of the high-definition camera 3, and the height adjustment The vertical angle of the camera 3 is clear, and the shooting data is transmitted through the communication module 29, which supports remote monitoring and alarm. During maintenance, the annular lifting plate 27 is linked with the connecting rod 26 to release the limit between the first moving block 17 and the second moving block 18, allowing the card block 14 to be separated from the card slot 15, and the high-definition camera 3 is easily disassembled. When reinstalling, the position of the limit block 24 is restored by the reset principle of the first reset spring 20, so that the limit block 24 is stuck in the inside of the limit slot 25, and the card block 14 is clamped and fixed, completing the installation of the connecting seat 2 to ensure stable operation of the equipment.

[0037] See also Figure 4 and Figure 5 A transmission worm wheel 12 is provided on the outer wall of the rotating shaft 13 at one end of the transmission chamber 9, and a transmission worm 11 is rotatably provided on one side of the transmission chamber 9, and a worm transmission is performed between the transmission worm 11 and the transmission worm wheel 12. The worm transmission has self-locking properties, which can keep the position of the high-definition camera 3 stable when the motor 10 stops, prevent accidental rotation due to external force, and enhance the stability and reliability of the system.

[0038] See also Figure 4 and Figure 5 A motor 10 is arranged on the rear side of the transmission cavity 9, and the output end of the motor 10 is connected to the transmission worm 11 through a coupling transmission. The coupling transmission ensures that the power of the motor 10 is efficiently and losslessly transmitted to the transmission worm 11, thereby improving the transmission efficiency and response speed of the system. At the same time, the structure is compact and the occupied space is reduced.

[0039] See also Figure 6A first return spring 20 is sleeved on the upper side of the outside of the first guide rod 19, one end of the first return spring 20 is connected to the adjusting chamber 16, and the other end of the first return spring 20 is connected to the connecting block 23. The first return spring 20 provides sufficient elastic force, and the first moving block 17 can be automatically reset without external force operation, so that it returns to the initial position, and is ready for the next limit operation or installation and disassembly process. This automatic reset design simplifies the operation process and improves work efficiency.

[0040] See also Figure 6 A second return spring 22 is sleeved on one side of the outside of the second guide rod 21, one end of the second return spring 22 is connected to the adjusting chamber 16, and the other end of the second return spring 22 is connected to the connecting block 23. The setting of the second return spring 22 enables the second moving block 18 to drive the limit block 24 to move into the inside of the adjusting chamber 16, so that the limit of the card block 14 can be released without the operation of external force, which is convenient to use.

[0041] See also Figure 2 and Figure 6 An annular lifting plate 27 is provided above the connecting seat 2, and a connecting rod 26 is adhered and fixed to the upper end of the first movable block 17. One end of the connecting rod 26 extends to the outside of the adjusting cavity 16, and the connecting rod 26 is slidably matched with the adjusting cavity 16. The end of the connecting rod 26 located outside the adjusting cavity 16 is connected to the annular lifting plate 27. The design of the annular lifting plate 27 allows the operator to easily achieve synchronous lifting of the four connecting rods 26 through hand movements, thereby controlling the unlocking and locking of the limit mechanism. The operation is simple and quick, and no additional tools are required.

[0042] See also Figure 6 The outer wall of the second movable block 18 is adhered and fixed with a limiting block 24, one end of the limiting block 24 penetrates and extends to the inside of the card slot 15, and the limiting block 24 is slidably matched with the card slot 15. Four limiting grooves 25 equidistantly distributed in an annular shape are provided on the lower side of the outer wall of the card block 14, and the limiting grooves 25 are adapted to one end of the limiting block 24 located inside the card slot 15. The precise matching of the limiting block 24 and the limiting groove 25 ensures the stability of the high-definition camera 3 during the installation process, prevents loosening or falling off due to vibration or external force, and improves the safety and stability of the system.

[0043] See also Figure 1 , Figure 2 and Figure 3An electric telescopic rod 4 is provided on one side of the lower end of the connecting seat 2, and the output end of the electric telescopic rod 4 is connected to the high-definition camera 3 in an articulated rotation manner. A sliding rod 5 is provided on the other side of the lower end of the connecting seat 2. A slider 6 is articulated and rotationally connected to one side of the upper end of the high-definition camera 3. The sliding rod 5 penetrates the slider 6, and the sliding rod 5 and the slider 6 slide in cooperation. The articulated rotation connection allows the high-definition camera 3 to achieve flexible rotation under the drive of the electric telescopic rod 4, thereby expanding the shooting range. At the same time, the sliding cooperation between the sliding rod 5 and the slider 6 ensures the smooth movement of the high-definition camera 3 in the vertical direction, thereby improving the stability of the shooting picture.

[0044] See also Figure 1 , Figure 2 and Figure 4 Solar panels 7 are arranged on both sides of the front end of the mounting frame 1, and the solar panels 7 are connected to the mounting frame 1 through a connecting frame 8. A battery 30 is arranged on one side inside the mounting frame 1, and a photovoltaic controller 28 is arranged on the other side inside the mounting frame 1. The input end of the photovoltaic controller 28 is electrically connected to the output end of the solar panel 7, and the output end of the photovoltaic controller 28 is electrically connected to the input end of the battery 30. The solar panel 7 can make full use of the light resources at the corners of the wall, convert solar energy into electrical energy and store it in the battery 30, providing a green and sustainable energy supply for the entire monitoring system. The electrical connection between the photovoltaic controller 28 and the solar panel 7 and the battery 30 ensures the stable output and storage management of electrical energy, and improves the energy utilization efficiency and safety of the system.

[0045] The working method of the monitoring alarm device applicable to the smart city system comprises the following steps:

[0046] Step 1: Place the mounting frame 1 at the corner of the wall, pass the bolts through the mounting holes 31 to install the mounting frame 1, absorb sunlight through the solar panel 7, convert light energy into electrical energy and store it in the battery 30, the photovoltaic controller 28 charges and generates electricity for protection of the battery 30, and the battery 30 supplies power to the motor 10 and the high-definition camera 3;

[0047] Step 2: Start the motor 10, the motor 10 rotates the transmission worm 11 through the coupling, the transmission worm 11 rotates the transmission worm wheel 12 through the worm transmission, the transmission worm wheel 12 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the clamping block 14 to rotate the connecting seat 2 synchronously, the connecting seat 2 drives the high-definition camera 3 to rotate for horizontal angle adjustment, start the electric telescopic rod 4 so that its output end drives one end of the high-definition camera 3 to rotate, the slider 6 on the other end of the high-definition camera 3 will slide correspondingly on the slide bar 5 to achieve the vertical angle adjustment of the high-definition camera 3, the shooting data of the high-definition camera 3 is generated through the communication module 29, and a remote alarm is realized;

[0048] Step 3: When dismantling for maintenance of the high-definition camera 3, the annular lifting plate 27 is pulled upward, and the annular lifting plate 27 will drive the connecting rod 26 to move upward synchronously, and the connecting rod 26 drives the first moving block 17 to move upward. The upward movement of the first moving block 17 will compress the first return spring 20, and the extrusion limit of the second moving block 18 will be released. Under the elastic recovery action of the second return spring 22, the second moving block 18 will lead the limit block 24 out of the interior of the limit groove 25, and the limit fixation of the card block 14 will be released. The connecting seat 2 is moved downward to separate it from the card block 14, and the removal of the high-definition camera is completed. When installing, the card block 14 is inserted into the interior of the card groove 15, and the first moving block 17 is moved downward by the elastic recovery action of the first return spring 20. The downward movement of the first moving block 17 squeezes and pushes the second moving block 18, so that the second moving block 18 drives the limit block 24 to be inserted into the interior of the limit groove 25, clamps and fixes the card block 14, and the installation of the high-definition camera 3 is completed.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A monitoring alarm device suitable for a smart city system, comprising a mounting frame (1), a plurality of mounting holes (31) distributed in a rectangular array are provided on both sides of the front end of the mounting frame (1), a communication module (29) is installed on one side inside the mounting frame (1), and the characteristics are: The invention also comprises a connection seat (2) which is arranged directly below the installation frame (1); a high-definition camera (3) is arranged below the connection seat (2); an output end of the high-definition camera (3) is electrically connected to an input end of a communication module (29); four adjusting cavities (16) are arranged in an annular shape and are equidistantly distributed inside the connection seat (2); a first moving block (17) is arranged inside each of the adjusting cavities (16); a second moving block (18) is arranged below each of the first moving blocks (17); and the adjusting cavities (1 6) A first guide rod (19) is provided on one side of the interior, and a second guide rod (21) is provided on the lower side of the interior of the adjustment cavity (16), the first guide rod (19) and the second guide rod (21) are both adhered and fixed to the adjustment cavity (16), the first guide rod (19) and the first moving block (17) and the second guide rod (21) and the second guide rod (21) are both connected through a connecting block (23), and the connecting block (23) is slidably matched with the first guide rod (19) and the second guide rod (21); The invention also comprises a transmission cavity (9) which is arranged inside the installation frame (1); a rotating shaft (13) is rotatably arranged inside the transmission cavity (9); one end of the rotating shaft (13) extends to the outside of the transmission cavity (9); a clamping block (14) is installed at one end of the rotating shaft (13) located outside the transmission cavity (9); a clamping groove (15) is arranged at a middle position of the upper end of the connecting seat (2), and the clamping groove (15) is adapted to fit the clamping block (14).

2. A monitoring and alarm device suitable for a smart city system according to claim 1, characterized in that: A transmission worm wheel (12) is arranged on the outer wall of one end of the rotating shaft (13) located inside the transmission chamber (9), and a transmission worm (11) is rotatably arranged on one side inside the transmission chamber (9), and worm transmission is performed between the transmission worm (11) and the transmission worm wheel (12).

3. A monitoring and alarm device suitable for a smart city system according to claim 2, characterized in that: A motor (10) is arranged at the rear side of the transmission cavity (9), and the output end of the motor (10) is connected to the transmission worm (11) via a coupling.

4. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: A first return spring (20) is sleeved on the upper side of the outside of the first guide rod (19), one end of the first return spring (20) is connected to the adjustment chamber (16), and the other end of the first return spring (20) is connected to the connection block (23).

5. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: A second return spring (22) is sleeved on one side of the exterior of the second guide rod (21), one end of the second return spring (22) is connected to the adjustment chamber (16), and the other end of the second return spring (22) is connected to the connection block (23).

6. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: An annular lifting plate (27) is arranged above the connecting seat (2), and a connecting rod (26) is bonded and fixed to the upper end of the first movable block (17), one end of the connecting rod (26) extends to the outside of the adjusting cavity (16), and the connecting rod (26) is slidably matched with the adjusting cavity (16), and the end of the connecting rod (26) located outside the adjusting cavity (16) is connected to the annular lifting plate (27).

7. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: The outer wall of the second movable block (18) is adhered and fixed with a limiting block (24), one end of the limiting block (24) penetrates and extends into the interior of the card slot (15), and the limiting block (24) is slidably matched with the card slot (15), and four limiting grooves (25) are arranged at equal intervals in an annular shape on the lower side of the outer wall of the card block (14), and the limiting grooves (25) are matched with one end of the limiting block (24) located inside the card slot (15).

8. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: An electric telescopic rod (4) is arranged on one side of the lower end of the connection seat (2), and the output end of the electric telescopic rod (4) is connected to the high-definition camera (3) in an articulated rotational manner. A sliding rod (5) is arranged on the other side of the lower end of the connection seat (2), and a sliding block (6) is articulated rotationally connected to one side of the upper end of the high-definition camera (3). The sliding rod (5) passes through the sliding block (6), and the sliding rod (5) and the sliding block (6) are slidably matched.

9. The monitoring alarm device suitable for a smart city system according to claim 1, characterized in that: Solar panels (7) are arranged on both sides of the front end of the installation frame (1); the solar panels (7) and the installation frame (1) are connected via a connecting frame (8); a storage battery (30) is arranged on one side inside the installation frame (1); a photovoltaic controller (28) is arranged on the other side inside the installation frame (1); the input end of the photovoltaic controller (28) is electrically connected to the output end of the solar panel (7), and the output end of the photovoltaic controller (28) is electrically connected to the input end of the storage battery (30).

10. A working method of a monitoring and alarm device applicable to a smart city system according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Place the installation frame (1) at the corner of the wall, pass the bolts through the installation holes (31) to install the installation frame (1), absorb sunlight through the solar panel (7), convert the light energy into electrical energy and store it in the storage battery (30), the photovoltaic controller (28) charges the storage battery (30) and generates electricity for protection, and the storage battery (30) supplies power to the motor (10) and the high-definition camera (3); Step 2: Start the motor (10), the motor (10) rotates the transmission worm (11) through the coupling, the transmission worm (11) rotates the transmission worm wheel (12) through the worm transmission, the transmission worm wheel (12) drives the rotating shaft (13) to rotate, the rotating shaft (13) drives the clamping block (14) to rotate the connecting seat (2) synchronously, the connecting seat (2) drives the high-definition camera (3) to rotate to adjust the horizontal angle, start the electric telescopic rod (4) so ​​that its output end drives one end of the high-definition camera (3) to rotate, the slider (6) on the upper side of the other end of the high-definition camera (3) will slide correspondingly on the slider (5), so as to realize the vertical angle adjustment of the high-definition camera (3), and the shooting data of the high-definition camera (3) is generated through the communication module (29) to realize remote alarm; Step 3: When dismantling the high-definition camera (3) for maintenance, pull the annular lifting plate (27) upward, the annular lifting plate (27) will drive the connecting rod (26) to move upward synchronously, the connecting rod (26) drives the first moving block (17) to move upward, the upward movement of the first moving block (17) will compress the first return spring (20), and release the extrusion limit on the second moving block (18), the second moving block (18) will be elastically restored by the second return spring (22), the limit block (24) will be led out of the limit groove (25), and the clamping block (1 4), the connecting seat (2) is moved downward to separate it from the clamping block (14), and the removal of the high-definition camera is completed. When installing, the clamping block (14) is clamped into the inside of the clamping slot (15), and the first moving block (17) is moved downward by the elastic recovery action of the first return spring (20). The downward movement of the first moving block (17) squeezes and pushes the second moving block (18), so that the second moving block (18) drives the limiting block (24) to be clamped into the inside of the limiting slot (25), and the clamping block (14) is clamped and fixed, and the installation of the high-definition camera (3) is completed.

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