Camera and video monitoring equipment
By connecting an electromagnetic coil and a limiting component in series in the camera motor drive circuit, the reliability problem of rotating parts of the camera in a vibrating environment is solved, and stable installation in scenarios such as bridges and high altitudes is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG UNIVIEW TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-15
AI Technical Summary
The rotating parts of traditional cameras are not reliable enough in high-frequency vibration environments and are prone to uninstructed offsets, causing the PTZ to "dive" in vibration environments, which affects its application in vibration-sensitive scenarios such as bridges and high altitudes.
An electromagnetic coil is connected in series in the camera's motor drive circuit. The limiting component moves in and out of the magnetic field, restricting the rotation of the camera body and preventing unnecessary rotation.
It effectively prevents the camera from rotating uninstructed due to external shaking or collisions, improving the reliability of the camera in vibration environments, and is suitable for scenarios such as bridges and high altitudes.
Smart Images
Figure CN224249758U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of security equipment technology, and in particular to a camera and video surveillance equipment. Background Technology
[0002] The rotating components of a camera (such as the spherical structure of a pan-tilt unit) are the core components for video surveillance equipment to achieve multi-angle shooting. They are driven by motors to achieve horizontal rotation and pitch adjustment, and are widely used in security monitoring, traffic management, and other fields. In special application scenarios such as bridges and high-altitude locations, the equipment often needs to cope with complex environments such as continuous vibration and wind impact.
[0003] Traditional cameras primarily rely on rotating components to fulfill basic motion functions, leading to potential reliability issues in high-frequency vibration environments. Under continuous vibration or sudden external forces, the self-locking capability of the motor drive system is easily compromised, causing uncontrolled deviations in the rotating components. A typical example is the "nodding" phenomenon of a dome camera in vibrating environments. This uncontrolled movement not only causes the monitoring angle to deviate from the preset position but also accelerates the wear and tear on mechanical components, limiting the application of such equipment in vibration-sensitive scenarios such as bridge monitoring and high-altitude operations. Utility Model Content
[0004] This utility model provides a camera and video surveillance equipment to solve the above-mentioned technical defects in the prior art. It can prevent the camera body from rotating unnecessarily due to external shaking, collisions and other factors, such as eliminating the "head-down" phenomenon of the sphere in a spherical camera, so that the camera can be installed in scenes where there may be vibration, such as bridges and high altitudes.
[0005] The first aspect of this utility model provides a camera, comprising:
[0006] Housing assembly;
[0007] The camera body is rotatably mounted on the housing assembly;
[0008] Limiting components, including:
[0009] A mounting base is fixedly disposed on the housing assembly;
[0010] An electromagnetic coil is connected in series in the motor drive circuit of the camera body. The electromagnetic coil is used to generate a magnetic field when the motor drive circuit is energized.
[0011] A limiting component is disposed within the fixed base. The limiting component is adapted to extend and retract under the action of a magnetic field to switch between a first position and a second position. In the first position, the limiting component is inserted into the camera body to restrict the rotation of the camera body. In the second position, the limiting component is separated from the camera body to release the restriction on the rotation of the camera body.
[0012] According to the camera provided by this utility model, the limiting component includes:
[0013] The mounting body is fixedly connected to the fixing base. The interior of the mounting body restricts the receiving cavity. The mounting body is provided with a guide hole, which communicates with the receiving cavity.
[0014] An elastic element is provided in the receiving cavity;
[0015] The limiting body is connected to the elastic element and is guided and engaged with the guide hole;
[0016] A magnetic component is disposed at the end of the limiting body opposite to the elastic component;
[0017] In the first position, the limiting body is inserted into the camera body, and the elastic element is in a state of restoring elastic deformation; in the second position, the limiting body is separated from the camera body, and the elastic element is in a state of elastic deformation.
[0018] According to the camera provided by this utility model, the limiting body includes:
[0019] A limiting block is located in the receiving cavity and is connected to the elastic element;
[0020] A push pin is connected to the limiting block, the push pin passes through the guide hole, and is guided and engaged with the guide hole;
[0021] The magnetic component is located at the end of the pusher that is away from the limiting block.
[0022] According to the camera provided by this utility model, the magnetic components and the electromagnetic coils are arranged with their magnetic poles facing each other.
[0023] According to the camera provided by this utility model, the position of the magnetic component is flush with the position of the electromagnetic coil.
[0024] According to the camera provided by this utility model, the motor drive circuit includes:
[0025] Switch module;
[0026] The power supply module is connected in series with the switch module;
[0027] The motor controller is connected in series with the power module;
[0028] The electromagnetic coil is connected in series in the circuit between the switch module and the motor controller.
[0029] According to the camera provided by this utility model, the motor controller is connected to the digital signal processor and the motor respectively;
[0030] The digital signal processor is used to generate control commands;
[0031] The motor controller is used to generate corresponding drive current signals according to control commands;
[0032] The motor is used to control the rotation of the camera body based on the drive current signal.
[0033] According to the camera provided by this utility model, the camera body includes:
[0034] sphere;
[0035] A rotating shaft is fixedly connected to the sphere, the rotating shaft passes through the housing assembly and rotates with the housing assembly; a limit hole is provided on the end face of the rotating shaft;
[0036] In the first position, the limiting component is inserted into the limiting hole.
[0037] According to the camera provided by this utility model, the housing assembly includes:
[0038] Upper casing;
[0039] A vertical bracket is fixedly connected to the upper housing;
[0040] The camera body is rotatably connected to the vertical bracket, and the mounting base is fixedly mounted on the vertical bracket.
[0041] A second aspect of this utility model provides a video surveillance device, including a monitor, a transmission component, and a camera as described in any one of the above, wherein the camera is connected to the monitor via the transmission component.
[0042] The camera provided by this utility model has a limiting component on the housing assembly. The limiting component includes an electromagnetic coil and a limiting component. The electromagnetic coil is connected in series in the motor drive circuit of the camera body. The electromagnetic coil is used to generate a magnetic field when the motor drive circuit is energized. The limiting component is located in the fixed base and is adapted to perform telescopic movement under the action of the magnetic field to switch between a first position and a second position. In the first position, the limiting component is inserted into the camera body to limit the rotation of the camera body. In the second position, the limiting component is separated from the camera body to release the rotation restriction on the camera body.
[0043] This design restricts the rotation of the camera body when it is not in operation, preventing unnecessary rotation due to external factors such as shaking or collisions. For example, it eliminates the "head-down" phenomenon in spherical cameras, allowing the camera to be installed in environments prone to vibration, such as bridges or at high altitudes. Furthermore, the compact design of the limiting component, integrating the mounting base, electromagnetic coil, and limiting assembly, contributes to the miniaturization of the camera, making it easier to carry and install in various devices and environments.
[0044] Furthermore, the video surveillance equipment provided by this utility model, because it includes the aforementioned camera, possesses all the advantages of the aforementioned camera. Attached Figure Description
[0045] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0046] Figure 1 This is one of the structural schematic diagrams of the camera provided in this embodiment of the utility model (the limiting component is located in the first position).
[0047] Figure 2 This is the second structural schematic diagram of the camera provided in this embodiment of the utility model (the limiting component is located in the second position).
[0048] Figure 3 This is a schematic diagram of the structure of the limiting component in the camera provided in this embodiment of the utility model.
[0049] Figure 4 This is a schematic diagram of the motor drive circuit in the camera provided in this embodiment of the utility model.
[0050] Figure 5This is a control block diagram of the camera provided in an embodiment of the present invention.
[0051] Figure 6 This is a side view of the vertical bracket in the camera provided in this embodiment of the utility model.
[0052] Figure label:
[0053] 10. Housing assembly; 11. Upper housing; 12. Vertical support;
[0054] 20. Camera body; 21. Sphere; 22. Motor drive circuit; 221. Switch module; 222. Power supply module; 223. Motor controller; 224. Digital signal processor; 23. Rotating shaft; 231. Limiting hole;
[0055] 30. Limiting component; 31. Fixing base; 32. Electromagnetic coil; 33. Limiting assembly; 331. Mounting body; 3311. Receiving cavity; 3312. Guide hole; 332. Elastic element; 333. Limiting body; 3331. Limiting block; 3332. Push pin; 334. Magnetic element. Detailed Implementation
[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0057] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0058] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0060] Figure 1 This is one of the structural schematic diagrams of the camera provided in this embodiment of the utility model (the limiting component is located in the first position). Figure 2 This is the second structural schematic diagram of the camera provided in this embodiment of the utility model (the limiting component is located in the second position).
[0061] See Figure 1 and Figure 2 This utility model provides a camera, which includes a housing assembly 10, a camera body 20, and a limiting component 30.
[0062] The housing assembly 10 includes an upper housing 11 and a vertical bracket 12 (also known as a mounting lug in PTZ cameras). The interior of the upper housing 11 can accommodate the drive structure for controlling the horizontal movement of the camera body 20. The vertical bracket 12 can be made of engineering plastic or metal (such as aluminum alloy) and has connection holes for fixing to the upper housing 11 by bolts or other fasteners.
[0063] The camera body 20 is rotatably mounted on the housing assembly 10. Specifically, a mounting hole is provided on the vertical bracket 12, and the camera body 20 can be mounted in the mounting hole of the vertical bracket 12 via a rotating shaft or other components. A bearing structure is used between the rotating shaft and the wall of the mounting hole to ensure smooth rotation of the camera body 20.
[0064] The limiting component 30 includes a fixed base 31, an electromagnetic coil 32, and a limiting assembly 33.
[0065] The mounting base 31 is made of metal or high-strength plastic and is fixed to the vertical bracket 12 of the housing assembly 10 by screws or clips. The shape of the mounting base 31 matches the internal space of the vertical bracket 12. The mounting base 31 has a chamber inside to accommodate the limiting component 33, and the shape of the chamber is adapted to the shape of the limiting component 33.
[0066] The electromagnetic coil 32 is made of enameled wire, and the number of turns of the electromagnetic coil 32 is determined according to the required magnetic field strength. For example, when a stronger magnetic field is required to ensure the reliable operation of the limit component 33, the number of turns can be increased. The wire diameter of the electromagnetic coil 32 must take into account the current passing through it, ensuring that a sufficient magnetic field is generated while avoiding overheating of the coil due to excessive current. The electromagnetic coil 32 is connected in series in the motor drive circuit 22 of the camera body 20, and is used to generate a magnetic field when the drive circuit is energized.
[0067] The electromagnetic coil 32 is connected in series in the motor drive circuit 22 of the camera body 20. This series connection can be achieved by setting up dedicated circuit traces on the printed circuit board (PCB). In addition, appropriate components such as resistors can be set in the circuit to control the current through the electromagnetic coil 32, thereby adjusting the magnetic field strength generated by the electromagnetic coil 32.
[0068] The limiting component 33 is disposed within the fixed base 31. The limiting component 33 is adapted to extend and retract under the action of a magnetic field to switch between a first position and a second position. Figure 1 As shown, in the first position, the limiting component 33 is inserted into the camera body 20 to limit the rotation of the camera body 20; as Figure 2 As shown, in the second position, the limiting component 33 separates from the camera body 20 to release the rotation restriction on the camera body 20.
[0069] The working process of the camera provided in this embodiment of the utility model is as follows:
[0070] When the camera body 20 does not need to rotate, the motor drive circuit 22 is not energized, and the electromagnetic coil 32 does not generate a magnetic field. At this time, the limiting component 33 is in the first position, and the limiting component 33 is inserted into the limiting hole 231 or the slot of the camera body 20 to restrict the rotation of the camera body 20.
[0071] When the camera body 20 needs to rotate, the motor drive circuit 22 is energized, and current flows through the electromagnetic coil 32. The electromagnetic coil 32 generates a magnetic field based on the principle of electromagnetic induction. Under the action of the magnetic field, the limiting component 33 overcomes its own friction and possible elastic force, switching from the first position to the second position. When the limiting component 33 is fully switched to the second position, the limiting component 33 separates from the camera body 20, releasing the restriction on the rotation of the camera body 20.
[0072] When the camera body 20 rotates to the desired angle or stops rotating, the motor drive circuit 22 stops being powered, the electromagnetic coil 32 loses current, and the magnetic field disappears. The limiting component 33 can then move from the second position to the first position, and the limiting component 33 is re-inserted into the camera body 20, again limiting the rotation of the camera body 20.
[0073] It is understood that the camera provided by this utility model, by setting a limiting component 30 on the housing assembly 10, makes the limiting component 30 include an electromagnetic coil 32 and a limiting component 33. The electromagnetic coil 32 is connected in series in the motor drive circuit 22 of the camera body 20. The electromagnetic coil 32 is used to generate a magnetic field when the motor drive circuit 22 is energized. The limiting component 33 is set in the fixed base 31. The limiting component 33 is adapted to perform telescopic movement under the action of the magnetic field to switch between a first position and a second position. In the first position, the limiting component 33 is inserted into the camera body 20 to limit the rotation of the camera body 20; in the second position, the limiting component 33 is separated from the camera body 20 to release the rotation restriction on the camera body 20.
[0074] This configuration allows the camera body 20 to be restricted from rotating by the limiting component 33 when the camera is not in operation. This prevents the camera body 20 from rotating unnecessarily due to external factors such as shaking or collisions. For example, it eliminates the "head-down" phenomenon of the sphere 21 in a spherical camera, allowing the camera to be installed in scenarios where there may be vibration, such as bridges or high altitudes.
[0075] The overall design of the limiting component 30 is relatively compact, integrating the mounting base 31, electromagnetic coil 32 and limiting component 33, which helps to reduce the overall size of the camera and makes the camera easier to carry and install in various different devices or environments.
[0076] Figure 3 This is a schematic diagram of the structure of the limiting component 33 in the camera provided in this embodiment of the utility model.
[0077] See Figure 3 In some embodiments of this utility model, the limiting component 33 includes an installation body 331, an elastic element 332, a limiting body 333, and a magnetic element 334.
[0078] The mounting body 331 can be fixedly connected to the fixing seat 31 using fasteners such as bolts. Specifically, bolt holes are provided on both the mounting body 331 and the fixing seat 31, and the two are fixed together using bolts and nuts of appropriate specifications. Alternatively, the fixing connection between the mounting body 331 and the fixing seat 31 can also be achieved using snap-fit methods, depending on the material.
[0079] The mounting body 331 internally defines a receiving cavity 3311, the internal shape of which can be designed according to the shape of the elastic element 332 and the limiting body 333. The mounting body 331 is provided with a guide hole 3312, which communicates with the receiving cavity 3311.
[0080] When the elastic element 332 can be a cylindrical spring, one end of the spring can be connected to the bottom of the receiving cavity 3311 by welding or nesting, and the other end can be connected to the limiting body 333. When the spring is installed in a nesting manner, a protrusion with a diameter slightly smaller than the inner diameter of the spring can be provided at one end of the limiting body 333, so that the spring can be fitted onto the protrusion, thereby achieving the connection.
[0081] The limiting body 333 can be made of metal, such as stainless steel or aluminum alloy, to ensure its strength and wear resistance. The limiting body 333 is guided and fitted with the guide hole 3312, ensuring that the limiting body 333 can slide smoothly within the guide hole 3312 without excessive wobbling. One end of the limiting body 333 is connected to the elastic element 332.
[0082] The magnetic component 334 is disposed at the other end of the limiting body 333. The connection between the magnetic component 334 and the limiting body 333 can be by adhesive or embedded installation. For example, when the magnetic component 334 is a small permanent magnet, a groove of appropriate size can be opened at one end of the limiting body 333, the permanent magnet can be embedded in the groove, and then glue or other fixing agent can be used to fix it to ensure that the magnetic component 334 will not fall off.
[0083] like Figure 1 As shown, in the first position, the limiting body 333 is inserted into the camera body 20. The limiting body 333 and the camera body 20 are mechanically engaged to prevent the camera body 20 from rotating accidentally when it is not needed. The elastic element 332 is in a state of restoring elastic deformation. Here, "restoring" is relative to the state after compression, that is, the elastic element 332 is not compressed at this time and is in a free state.
[0084] like Figure 2As shown, in the second position, the limiting body 333 separates from the camera body 20, and the camera body 20 can be rotated in a controlled manner. The elastic element 332 is in an elastic deformation state, that is, the elastic element 332 has the ability to recover its elastic deformation. At this time, the elastic element 332 is no longer compressed, and a stable amount of compression is maintained to provide elastic recovery force.
[0085] Continue reading Figure 3 In some embodiments of this utility model, the limiting body 333 includes a limiting block 3331 and a push pin 3332. The limiting block 3331 is located in the receiving cavity 3311 and is connected to the elastic member 332.
[0086] The push pin 3332 is connected to the limiting block 3331. The push pin 3332 passes through the guide hole 3312 and reciprocates under the restriction of the guide hole 3312. It can maintain a stable direction of movement and improve the stability and reliability of the limiting body 333.
[0087] The magnetic component 334 is located at one end of the push pin 3332 away from the limiting block 3331. The magnetic component 334 can be a permanent magnet, such as a neodymium iron boron permanent magnet.
[0088] like Figure 1 As shown, in the first position, when the camera body 20 does not need to rotate, the motor drive circuit 22 is not energized, and the electromagnetic coil 32 does not generate a magnetic field. The permanent magnet at the front of the push pin 3332 is not affected by the external magnetic field, and the push pin 3332 will not be displaced. The push pin 3332 is inserted into the camera body 20, and the push pin 3332 and the camera body 20 are mechanically engaged to prevent the camera body 20 from rotating accidentally when it does not need to rotate. At this time, the elastic element 332 is in a state of restoring elastic deformation.
[0089] like Figure 2 As shown, in the second position, when the camera body 20 needs to rotate, the motor drive circuit 22 is energized, and current flows through the electromagnetic coil 32. The electromagnetic coil 32 generates a magnetic field according to the principle of electromagnetic induction. Under the action of the magnetic field, the permanent magnet at the front of the push pin 3332 is affected by the magnetic field and moves together with the push pin 3332 to compress the elastic element 332 until the push pin 3332 separates from the camera body 20, and the camera body 20 can then rotate in a controlled manner.
[0090] It should be noted that the front end of the push pin 3332 or the magnetic component 334 may be provided with a tapered plug for insertion into the camera body 20. In addition, in order to ensure the stability of the limit block 3331 during the telescopic movement, a guide block may be provided on the side of the limit block 3331, and a guide groove may be provided on the inner wall of the mounting body 331. The guide block and the guide groove cooperate to slide.
[0091] In some embodiments of this utility model, the magnetic poles of the magnetic element 334 and the electromagnetic coil 32 are kept opposite to each other.
[0092] According to the law of interaction between magnetic poles, like poles repel each other. When the like poles of the magnetic component 334 and the electromagnetic coil 32 are opposite each other, a repulsive force is generated. This repulsive force can be used to drive the push pin 3332 to move, so as to limit or release the limit.
[0093] In some embodiments of this utility model, the position of the magnetic element 334 is aligned with the position of the electromagnetic coil 32.
[0094] When the magnetic component 334 and the electromagnetic coil 32 are aligned, the magnetic field interaction between them is enhanced, which can provide a greater driving force, thereby improving the limiting performance of the limiting component 33.
[0095] Figure 4 This is a schematic diagram of the structure of the motor drive circuit 22 in the camera provided in this embodiment of the utility model.
[0096] See Figure 4 In some embodiments of this utility model, the motor drive circuit 22 includes a switch module 221, a power supply module 222, and a motor controller 223. The power supply module 222 is connected in series with the switch module 221; the motor controller 223 is connected in series with the power supply module 222; and the electromagnetic coil 32 is connected in series in the circuit between the switch module 221 and the motor controller 223.
[0097] It is understandable that the power supply module 222, switch module 221, electromagnetic coil 32, and motor controller 223 are connected in series in sequence to form a complete circuit. The power supply module 222 provides electrical energy, the switch module 221 controls the on / off state of the circuit, the electromagnetic coil 32 is used to generate a magnetic field, and the motor controller 223 controls the operation of the motor.
[0098] Install each component into the appropriate circuit board or device, and perform circuit connection and debugging. Ensure that the circuit connection is correct, each component is working properly, and the motor can operate as expected.
[0099] When switch module 221 is closed, power module 222 begins supplying power to the circuit. Current flows through electromagnetic coil 32 and motor controller 223, causing the motor to start running. Motor controller 223 monitors and adjusts the motor's operating status according to preset parameters and control algorithms, ensuring that parameters such as motor speed and torque meet requirements. Electromagnetic coil 32 generates a magnetic field based on the principle of electromagnetic induction. Under the influence of this magnetic field, the permanent magnet at the front of push pin 3332 moves along with push pin 3332, compressing elastic element 332 until push pin 3332 separates from camera body 20, allowing camera body 20 to rotate controllably.
[0100] With this configuration, when the camera motor is working, the push pin 3332 does not obstruct the rotation of the camera body 20 (sphere 21), and when the motor is not working, the push pin 3332 obstructs the rotation of the camera body 20 (sphere 21). That is, the camera body 20 (sphere 21) can only rotate when the motor is driven, thus preventing the camera body 20 from rotating undesirably under the influence of external forces.
[0101] Figure 5 This is a control block diagram of the camera provided in an embodiment of the present invention.
[0102] See Figure 5 In some embodiments of this utility model, the motor controller 223 is connected to the digital signal processor 224 and the motor respectively; the digital signal processor 224 is used to generate control commands; the motor controller 223 is used to generate corresponding drive current signals according to the control commands; and the motor is used to control the camera body 20 to rotate according to the drive current signals.
[0103] Essentially, the motor's drive control can be achieved through the camera's internal control circuitry. The digital signal processor 224 (DSP) and the motor controller 223 are connected via a suitable communication interface, such as an SPI interface, CAN bus interface, or other dedicated control signal interface, ensuring stable and real-time data transmission. Simultaneously, the output of the motor controller 223 is connected to the motor's driver or power module, and the motor's output shaft is connected to the rotating parts of the camera body 20, achieving mechanical transmission. The DSP 224 calculates and processes the preset control logic or externally input control signals, such as user-input commands for camera rotation angle and speed via the user interface, generating corresponding control commands. The DSP 224 sends the generated control commands to the motor controller 223 via the communication interface. Upon receiving the control commands, the motor controller 223 parses and processes the commands, using its internal control algorithms and circuit modules to generate corresponding drive current signals. The drive current signals output by the motor controller 223 act on the motor, causing it to rotate according to the control commands. The motor's rotation, through a transmission device, drives the camera body 20 to perform corresponding rotational actions, such as horizontal, vertical, or omnidirectional rotation.
[0104] Figure 6 This is a side view of the vertical bracket 12 in the camera provided in this embodiment of the utility model.
[0105] See Figure 6 In some embodiments of this utility model, the camera body 20 includes a ball 21 and a rotating shaft 23. The rotating shaft 23 is fixedly connected to the ball 21 and passes through the housing assembly 10, and rotates in cooperation with the housing assembly 10. A limiting hole 231 is provided on the end face of the rotating shaft 23. In the first position, the limiting component 33 is inserted into the limiting hole 231 for limiting.
[0106] The sphere 21, as the main part of the camera, houses key components such as the lens and image sensor. The rotating shaft 23 is securely connected to the sphere 21, for example by welding, high-strength bolts, or integral molding, ensuring that there is no relative displacement between the two.
[0107] On the end face of the rotating shaft 23, a limiting hole 231 is made inward using machining processes (such as drilling, milling, etc.). The diameter and depth of the limiting hole 231 are adapted to the insertion of the push pin 3332 in the limiting component 33.
[0108] This utility model also provides a video surveillance device, which includes a monitor, a transmission component, and a camera as described above, wherein the camera is connected to the monitor through the transmission component.
[0109] It is understood that the video surveillance equipment provided by this utility model, because it includes the aforementioned camera, possesses all the advantages of the aforementioned camera, preventing the rotating parts of the camera from rotating uncontrollably due to external forces such as vibration, such as eliminating the "head-down" phenomenon of the sphere 21 in the spherical camera, so that cameras with rotating parts such as PTZ cameras can be installed in scenarios where vibration may occur, such as bridges and high altitudes.
[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A camera, characterized in that, include: Housing assembly; The camera body is rotatably mounted on the housing assembly; Limiting components, including: A mounting base is fixedly disposed on the housing assembly; An electromagnetic coil is connected in series in the motor drive circuit of the camera body. The electromagnetic coil is used to generate a magnetic field when the motor drive circuit is energized. A limiting component is disposed within the fixed base. The limiting component is adapted to extend and retract under the action of a magnetic field to switch between a first position and a second position. In the first position, the limiting component is inserted into the camera body to restrict the rotation of the camera body. In the second position, the limiting component is separated from the camera body to release the restriction on the rotation of the camera body.
2. The camera according to claim 1, characterized in that, The limiting component includes: The mounting body is fixedly connected to the fixing base. The interior of the mounting body restricts the receiving cavity. The mounting body is provided with a guide hole, which communicates with the receiving cavity. An elastic element is provided in the receiving cavity; The limiting body is connected to the elastic element and is guided and engaged with the guide hole; A magnetic component is disposed at the end of the limiting body opposite to the elastic component; In the first position, the limiting body is inserted into the camera body, and the elastic element is in a state of restoring elastic deformation; in the second position, the limiting body is separated from the camera body, and the elastic element is in a state of elastic deformation.
3. The camera according to claim 2, characterized in that, The limiting body includes: A limiting block is located in the receiving cavity and is connected to the elastic element; A push pin is connected to the limiting block, the push pin passes through the guide hole, and is guided and engaged with the guide hole; The magnetic component is located at the end of the pusher that is away from the limiting block.
4. The camera according to claim 2, characterized in that, The magnetic components and the electromagnetic coil are arranged with their magnetic poles of the same polarity facing each other.
5. The camera according to claim 2, characterized in that, The position of the magnetic component is aligned with the position of the electromagnetic coil.
6. The camera according to claim 1, characterized in that, The motor drive circuit includes: Switch module; The power supply module is connected in series with the switch module; The motor controller is connected in series with the power module; The electromagnetic coil is connected in series in the circuit between the switch module and the motor controller.
7. The camera according to claim 6, characterized in that, The motor controller is connected to both the digital signal processor and the motor. The digital signal processor is used to generate control commands; The motor controller is used to generate corresponding drive current signals according to control commands; The motor is used to control the rotation of the camera body based on the drive current signal.
8. The camera according to any one of claims 1 to 7, characterized in that, The camera body includes: sphere; A rotating shaft is fixedly connected to the sphere, the rotating shaft passes through the housing assembly and rotates with the housing assembly; a limit hole is provided on the end face of the rotating shaft; In the first position, the limiting component is inserted into the limiting hole.
9. The camera according to any one of claims 1 to 7, characterized in that, The housing assembly includes: Upper casing; A vertical bracket is fixedly connected to the upper housing; The camera body is rotatably connected to the vertical bracket, and the mounting base is fixedly mounted on the vertical bracket.
10. A video surveillance device, characterized in that, It includes a monitor, a transmission component, and a camera as described in any one of claims 1 to 9, wherein the camera is connected to the monitor via the transmission component.