Imaging device

Abstract

The utility model provides a camera device. The camera device comprises a camera assembly, a support assembly and a control assembly. The camera assembly comprises a shell and a magnet, the shell is provided with a containing cavity and a first groove communicated with the containing cavity, the magnet is fixedly connected to the side wall of the first groove, and the magnet can generate a magnetic field after being electrified. The support assembly is rotationally connected with the camera assembly and used for adjusting the orientation of the camera assembly, the support assembly comprises a support body and a Hall sensor, the Hall sensor is connected to the support body, the support body is rotationally connected with the camera assembly in the containing cavity and extends out of the containing cavity from the first groove, and the Hall sensor and the magnet are oppositely arranged. The Hall sensor is used for sending a rotation signal when the magnet rotates relative to the Hall sensor. The control assembly is configured to determine the rotation angle of the camera assembly relative to the support assembly according to the rotation signal. Therefore, the detection and adjustment precision of the rotation angle of the camera device is higher, and the camera device is not easily influenced by the external environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to camera equipment technical field, especially a kind of camera device. BACKGROUND

[0002] The outdoor security product on market currently has the demand of adjusting lens angle, for example, the lens body of head of cloud platform can rotate under the driving of motor, and generally design is by motor body and gear rotation counting to calculate the rotation angle of lens, and the mechanical counting detection mode exists idle running step loss or gear jamming adverse failure phenomenon, so that detection precision is poorer, and detection precision is also susceptible to external environment. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a kind of camera device, the rotation angle detection adjustment precision of the camera device is higher, not susceptible to external environment.

[0004] To achieve the above object, the utility model embodiment adopts the following technical scheme:

[0005] The camera device comprises:

[0006] Camera assembly, including shell and magnet, the shell has accommodating cavity and the first slot being communicated with the accommodating cavity, the magnet is fixedly connected to the side wall of the first slot, and the magnet can generate magnetic field after being electrified;

[0007] Support assembly, rotationally connected with camera assembly, for adjusting the orientation of camera assembly, support assembly includes support body and hall sensor, hall sensor is connected to support body, support body rotationally connects camera assembly in accommodating cavity, and extends from the accommodating cavity by the first slot, hall sensor is oppositely arranged with magnet, and hall sensor is used to emit rotation signal when magnet rotates relative to hall sensor;

[0008] Control assembly, control assembly is configured to determine the rotation angle of camera assembly relative to support assembly according to rotation signal.

[0009] In some embodiments, hall sensor is configured to emit rotation signal when the size of hall voltage exceeds the set threshold during the rotation of magnet relative to hall sensor.

[0010] In some embodiments, control assembly is electrically connected with hall sensor, and control assembly is configured to be able to control the rotation of camera assembly relative to support assembly, control assembly is used to determine the rotation angle of camera assembly relative to support assembly according to rotation signal, and is used to adjust the rotation angle of camera assembly relative to support assembly.

[0011] In some embodiments, during the rotation of the magnet relative to the bracket assembly, a projection of the magnet on a projection plane perpendicular to a projection direction parallel to the rotation axis of the magnet covers a projection of the Hall sensor on the projection plane.

[0012] In some embodiments, the housing comprises an arc-shaped peripheral wall, the arc-shaped peripheral wall is located at an end of the housing and forms the first slot, and the arc-shaped peripheral wall and the first slot both extend in a direction surrounding the rotation axis.

[0013] In some embodiments, the arc-shaped peripheral wall comprises a first end and a second end opposite to each other and connected to each other in the direction surrounding the rotation axis, the first slot is arranged at the first end, and the second end is in a closed arc surface.

[0014] In some embodiments, the side of the bracket body facing the magnet is provided with a second slot, and the Hall sensor is connected to a slot wall of the second slot.

[0015] In some embodiments, the bracket assembly further comprises a cover body, the cover body is detachably connected to the bracket body and covers the second slot.

[0016] In some embodiments, the camera assembly further comprises a driving part located in the accommodating cavity, one end of the driving part is fixedly connected to the housing, and the other end of the driving part is rotationally connected to the bracket assembly, so that the camera assembly can rotate relative to the bracket assembly.

[0017] In some embodiments, the bracket body comprises a first extension part and a second extension part, the first extension part and the second extension part both have a cylindrical shape, the first extension part is rotationally connected to the driving part in the accommodating cavity, the second extension part extends out of the accommodating cavity from the first slot and is connected to the Hall sensor, and an extension axis of the first extension part is perpendicular to an extension axis of the second extension part.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] The camera device of this invention includes a camera assembly, a support assembly, and a control assembly. The camera assembly, used for recording images, includes a housing and a magnet. The housing has a receiving cavity and a first groove communicating with the receiving cavity. The magnet is fixedly connected to the side wall of the first groove and generates a magnetic field when energized. To cooperate with the magnet, the support assembly includes a support body and a Hall sensor. The support body provides support. The control assembly is configured to determine the rotation angle of the camera assembly relative to the support assembly based on rotation signals. Compared to related technologies that use mechanical structures to detect rotation angles, in this invention, the magnet generates a magnetic field, and the camera assembly can drive the magnet, causing it to move circumferentially relative to the Hall sensor. The Hall sensor, positioned opposite the magnet, detects these changes and outputs corresponding rotation signals. By analyzing these rotation signals, the changes in the magnetic field can be converted into angle values, thereby adjusting the orientation of the camera assembly. Since the above detection and adjustment process is based on the Hall effect, the rotation angle detection and adjustment accuracy of the camera device of this invention is higher and less susceptible to external environmental influences. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a first-side perspective view of the camera device provided in one embodiment of the present utility model;

[0022] Figure 2 This is an exploded view of the camera device provided in one embodiment of the present invention;

[0023] Figure 3 This is a top view schematic diagram provided in one embodiment of the present utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the cross section at point AA;

[0025] Figure 5 This is a perspective view of the second side of the camera device provided in one embodiment of the present invention; wherein, part of the housing has been removed, and the control component is represented by a wireframe, and the connection between the control component and the Hall sensor and the drive unit is represented by a dashed line;

[0026] Figure 6This is a perspective view of a bracket assembly provided in one embodiment of the present invention; wherein the cover is indicated by dashed lines, and the second groove and Hall sensor, which are covered by the cover, are shown.

[0027] Explanation of icon numbers:

[0028] Camera device 100;

[0029] Camera assembly 110; housing 111; receiving cavity 1111; first groove 1112; arc-shaped peripheral wall 1113; first end 1113A; second end 1113B; magnet 112; camera 113; drive unit 114;

[0030] Support assembly 120; support body 121; first extension 121A; second extension 121B; second slot 1211; Hall sensor 122; cover 123;

[0031] Control component 130;

[0032] Zhou Xiang R.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] Currently, outdoor security products on the market have the need to adjust the lens angle. For example, the lens body of a pan-tilt unit can rotate under the drive of a motor. The general design relies on the rotation of the motor body and gears to count the rotation angle of the lens. The mechanical counting detection method has the problem of missing steps due to idle rotation or gear jamming, resulting in poor detection accuracy. Moreover, the detection accuracy is also easily affected by the external environment.

[0038] In view of this, see Figures 1-6 This utility model provides a camera device 100 in its embodiments. The camera device 100 can be any type of camera equipment, such as a camera pan / tilt unit, a monitor, etc. The functions of the camera device 100 may include recording moving images, capturing still images, and visual inspection.

[0039] The camera device 100 includes a camera assembly 110 and a support assembly 120. See details... Figures 1-4 The camera assembly 110 includes a housing 111 and a magnet 112. The housing 111 has a receiving cavity 1111 and a first groove 1112 communicating with the receiving cavity 1111. It is understood that the camera assembly 110 is used for recording images. Specifically, the camera assembly 110 may include a camera device (e.g., a camera 113), or the camera assembly 110 may be used to connect to a camera device. Corresponding to the angle detection function, the magnet 112 is fixedly connected to the side wall of the first groove 1112. The magnet 112 generates a magnetic field when energized. For applications of the magnet 112, please refer to the following text.

[0040] See Figures 1-4The bracket assembly 120 is rotatably connected to the camera assembly 110 and is used to adjust the orientation of the camera assembly 110. The bracket assembly 120 includes a bracket body 121 and a Hall sensor 122. The Hall sensor 122 is a magnetic sensor based on the Hall effect, capable of detecting changes in magnetic fields and converting them into electrical signals. Specifically, the Hall sensor 122 can be a linear Hall sensor 122 or a switch-type Hall sensor 122. For the structure of the Hall sensor 122 itself, please refer to relevant technologies; details will not be elaborated here. The Hall sensor 122 is connected to the bracket body 121, which is rotatably connected to the camera assembly 110 within the receiving cavity 1111 and extends out of the receiving cavity 1111 through the first slot 1112. For angle detection, the Hall sensor 122 is arranged opposite to the magnet 112. The camera assembly 110 can rotate relative to the bracket assembly 120 in the circumferential direction R to adjust the orientation of the camera assembly 110. The Hall sensor 122 emits a rotation signal when the magnet 112 rotates relative to the Hall sensor 122. The rotation signal can specifically be the position or angle of the magnet 112 relative to the Hall sensor 122, or it can simply be a command signal. It is understood that since the magnet 112 can generate a magnetic field, and the camera assembly 110 can drive the magnet 112, causing the magnet 112 to move circumferentially R relative to the Hall sensor 122. Specifically, according to the working principle of the Hall sensor 122, when the magnet 112 moves, the direction and intensity of the magnetic field it generates will change. The Hall sensor 122, positioned opposite the magnet 112, will detect these changes and output a corresponding rotation signal. By analyzing these rotation signals, the change in the magnetic field can be converted into an angle value, which can then further drive the camera assembly 110 or the support assembly 120, thereby adjusting the orientation of the camera assembly 110.

[0041] To process the rotation signal, the camera device 100 also includes a control component 130, which is configured to determine the rotation angle of the camera component 110 relative to the support assembly 120 based on the rotation signal. Specifically, the control component 130 is electrically connected to a Hall sensor 122, which is configured to send an electrical signal to the control component 130 based on the magnitude of the Hall voltage. Depending on the requirements, the Hall sensor 122 may send only a signal indicating whether the Hall voltage is greater than a set threshold, or it may send the value of the Hall voltage. The control component 130 may be electrically connected to a drive unit 114 for driving the rotation of the camera component 110, so that after receiving the electrical signal, the control component 130 can further control the drive unit 114 to adjust the orientation of the camera component 110. It should be noted that the electrical connection described in this invention can be a wired connection via a wire, or a wireless connection via a network or Bluetooth.

[0042] In some embodiments, the magnet 112 can be composed of multiple small magnets arranged at circumferential intervals R. During the rotation of the magnet 112 relative to the Hall sensor 122, the Hall sensor 122 can be aligned with each of the small magnets in turn, and the magnetic field strength sensed by the Hall sensor 122 will show a corresponding waveform change trend. When the magnetic field strength reaches a set threshold (which may or may not be the peak of the magnetic field strength value), the Hall sensor 122 will send a rotation signal to determine the rotation angle.

[0043] For the purpose of recording, see Figure 2 In some embodiments, the camera assembly 110 may include a camera 113, which may be disposed inside the housing 111 and exposed through an opening on one side of the housing 111 (or the camera 113 may be connected to the outer peripheral wall of the housing 111). The camera 113 may be any type of camera device. The camera 113 and the bracket assembly 120 may be respectively connected to opposite sides of the housing 111. According to the above configuration, the function of adjusting the orientation of the camera assembly 110 may correspond to adjusting the direction of the camera 113 towards the outside, that is, adjusting the camera angle of the camera 113.

[0044] It should be noted that, depending on the placement and position of the camera device 100 during use, the rotation of the camera device 100 along the circumferential direction R can correspond to rotation in any direction. Specifically, in some embodiments, in order for the camera device 100 to perform pitch motion in the vertical direction, the plane containing the circumferential direction R is a vertical plane, which is parallel to the direction of gravity, that is, the rotation axis of the camera component 110 relative to the support component 120 is parallel to the horizontal direction; in other embodiments, in order for the camera device 100 to perform rotational motion in the horizontal direction, the plane containing the circumferential direction R is a horizontal plane, which is parallel to the horizontal direction, that is, the rotation axis of the camera component 110 relative to the support component 120 is parallel to the direction of gravity.

[0045] Furthermore, depending on the requirements, in specific usage scenarios, the camera assembly 110 can rotate relative to the ground while the support assembly 120 remains stationary relative to the ground, or the camera assembly 110 can remain stationary relative to the ground while the support assembly 120 rotates relative to the ground. For ease of description, the following description will use an embodiment where the camera assembly 110 performs pitch motion in the vertical direction relative to the ground while the support assembly 120 remains stationary relative to the ground.

[0046] As can be seen, the camera device 100 of this utility model includes a camera assembly 110, a support assembly 120, and a control assembly 130. The camera assembly 110 is used for camera recording and includes a housing 111 and a magnet 112. The housing 111 has a receiving cavity 1111 and a first groove 1112 communicating with the receiving cavity 1111. The magnet 112 is fixedly connected to the side wall of the first groove 1112. The magnet 112 generates a magnetic field when energized. To cooperate with the magnet 112, the support assembly 120 includes a support body 121 and a Hall sensor 122. The support body 121 provides support. The control assembly 130 is configured to determine the rotation angle of the camera assembly 110 relative to the support assembly 120 based on a rotation signal. Compared to related technologies that use mechanical structures to detect rotation angles, in this invention, the magnet 112 generates a magnetic field, and the camera assembly 110 can drive the magnet 112, causing the magnet 112 to move circumferentially R relative to the Hall sensor 122. The Hall sensor 122, which is positioned opposite the magnet 112, detects these changes and outputs corresponding rotation signals. By analyzing these rotation signals, the changes in the magnetic field can be converted into angle values, thereby adjusting the orientation of the camera assembly 110. Since the above detection and adjustment process is based on the Hall effect, the rotation angle detection and adjustment accuracy of the camera device 100 of this invention is higher and less susceptible to external environmental influences.

[0047] Regarding the specific angle detection process of the Hall sensor 122, in some embodiments, during the rotation of the magnet 112 relative to the Hall sensor 122 along the circumferential direction R, the Hall sensor 122 can generate a Hall voltage. The Hall sensor 122 is configured to detect whether the magnitude of the Hall voltage exceeds a set threshold. It is understood that under the above detection function, the Hall sensor 122 can be a switch-type Hall sensor 122. When the magnetic field strength generated by the magnet 112 reaches a certain threshold, the output signal of the Hall sensor 122 will change abruptly, from high level to low level or from low level to high level. That is, the output signal of Hall sensor 122 can change in waveform between low and high levels, so that the orientation of camera component 110 has multiple adjustment positions. Between each peak, the angle through which camera component 110 rotates is the adjustment angle of the corresponding position. The distance between each peak can be equal, so that camera component 110 has multiple evenly distributed adjustment positions. For example, the orientation of camera component 110 can be any of -30°, -60°, 0°, 30°, and 60° relative to the horizontal plane.

[0048] To improve the detection performance of Hall sensor 122, see [link / reference]. Figure 4In some embodiments, as the magnet 112 rotates circumferentially R relative to the support assembly 120, the projection of the magnet 112 onto a projection plane perpendicular to the projection direction, along a projection direction parallel to the rotation axis of the magnet 112, covers the projection of the Hall sensor 122 onto the projection plane. With respect to the above limitation, it is understood that, provided the obstruction is removed, when viewed along a direction parallel to the rotation axis of the magnet 112, the magnet 112 can cover the Hall sensor 122 at any of its rotational positions. This arrangement enables higher magnetic field detection accuracy of the Hall sensor 122.

[0049] For the shape of housing 111, see Figure 1 and Figure 4 In some embodiments, the housing 111 includes an arc-shaped peripheral wall 1113 located at the end of the housing 111 and forming a first groove 1112. Both the arc-shaped peripheral wall 1113 and the first groove 1112 extend along the direction surrounding the rotation axis. Simultaneously, the overall extension direction of the magnet 112 can be the same as the extension direction of the first groove 1112. It is understood that the arc-shaped peripheral wall 1113 is the end wall surface of the housing 111 where the first groove 1112 is located. The arrangement that both the arc-shaped peripheral wall 1113 and the first groove 1112 extend along the direction surrounding the rotation axis allows the sidewall shape of the first groove 1112 to correspond to the magnet 112, thus making the connection and positioning of the magnet 112 more convenient and aesthetically pleasing. Specifically, in some embodiments, the direction described above along the rotation axis can be circumferential. Figure 1 and Figure 4 In the embodiment shown, the magnet 112 is fan-shaped and fixedly connected to one of the side walls of the first groove 1112; on the other hand, it can make the side of the housing 111 where the magnet 112 is located (i.e., the location where the arc-shaped peripheral wall 1113 is located) arc-shaped, which helps to avoid interference between the housing 111 on this side and the support assembly 120 (or other components connected to the support assembly 120).

[0050] Based on the above-described arc-shaped peripheral wall 1113, see Figure 1In some embodiments, the arc-shaped peripheral wall 1113 includes a first end 1113A and a second end 1113B that are opposite to and connected to each other along the direction surrounding the rotation axis. A first groove 1112 is provided at the first end 1113A, and the second end 1113B is a closed arc surface. That is, the first end 1113A and the second end 1113B are two parts of the arc-shaped peripheral wall 1113 along the circumferential direction R. The first groove 1112 is only located at the first end 1113A, while the remaining part of the first end 1113A and the second end 1113B are closed structures. This arrangement helps to improve the sealing performance of the housing 111 and helps to prevent the Hall sensor 122 or magnet 112 or other components located in the receiving cavity 1111 from being affected by the external environment due to the excessively large opening area of ​​the housing 111. Figure 1 In the embodiment shown, the arc-shaped peripheral wall 1113 is hemispherical, the first end 1113A is located above the second end 1113B, and the extension position of the first groove 1112 in the vertical direction does not exceed the tangent line of the arc-shaped peripheral wall 1113 in the horizontal direction (passing through the center of the hemispherical arc-shaped peripheral wall 1113 and averaging the radial tangent line of the arc-shaped peripheral wall 1113).

[0051] To enable adjustment and drive of the camera component 110, see [link / reference]. Figure 5 In some embodiments, the camera assembly 110 further includes a drive unit 114 located in the receiving cavity 1111. One end of the drive unit 114 is fixedly connected to the housing 111, and the other end is rotatably connected to the bracket assembly 120, so that the camera assembly 110 can rotate circumferentially R relative to the bracket assembly 120. The driving action of the drive unit 114 on the camera assembly 110 can be controlled by the control unit 130 described in the above embodiments. That is, after the control unit 130 receives the electrical signal emitted by the Hall sensor 122, the control unit 130 can further send a control signal to the drive unit 114 to control the drive unit 114 to drive the camera assembly 110 to rotate.

[0052] For specific settings of Hall sensor 122, please refer to [link / reference]. Figure 6In some embodiments, the bracket body 121 has a second groove 1211 on the side facing the magnet 112. The Hall sensor 122 is connected to the groove wall of the second groove 1211. This groove wall can be the side wall of the second groove 1211 or the bottom wall of the second groove 1211 (the wall facing the opening of the second groove 1211). The connection can be a simple abutment or can be made by other connecting parts. This arrangement facilitates the connection and positioning of the Hall sensor 122 and the bracket body 121. Specifically, since the angle detection in this invention involves the relative movement between the magnet 112 and the Hall sensor 122, the installation position accuracy between the magnet 112 and the Hall sensor 122 affects the angle detection accuracy. The second groove 1211, which mates with the magnet 112, makes it easier to install and position the magnet 112. Furthermore, the size and shape of the Hall sensor 122 can be adapted to the second groove 1211, thereby reducing the connection structure between the Hall sensor 122 and the bracket body 121, or eliminating the need for additional connection structures. In other embodiments, the Hall sensor 122 can be directly connected to the outer periphery of the bracket body 121, thereby eliminating the need for additional slotting structures in the bracket assembly 120 and reducing costs.

[0053] The second slot 1211, based on the above embodiment, see [reference] Figure 6 In some embodiments, the bracket assembly 120 further includes a cover 123, which is detachably connected to the bracket body 121 and covers the second groove 1211. The cover 123 serves to seal and cover the second groove 1211, that is, to enclose the Hall sensor 122 within the second groove 1211, thereby minimizing the influence of the external environment on the Hall sensor 122. At the same time, according to the characteristics of the Hall sensor 122, covering the second groove 1211 with the cover 123 does not affect the operation of the Hall sensor 122. The cover 123 can be disposed on the second groove 1211 in any suitable manner. For example, in some embodiments, the cover 123 is a silicone plug, which is suitable for extending into the second groove 1211. The deformation of the silicone plug itself can achieve the sealing effect on the Hall sensor 122. In other embodiments, the cover 123 and the second groove 1211 are respectively provided with a snap-fit ​​structure or a magnetic attraction structure that can cooperate with each other, so that the cover 123 and the second groove 1211 can form a snap-fit ​​connection or a magnetic connection.

[0054] For the specific structure of the support body 121, see [link to relevant documentation]. Figure 6In some embodiments, the support body 121 includes a first extension 121A and a second extension 121B. Both the first extension 121A and the second extension 121B are cylindrical in shape. The cylinder described above can be a solid cylinder or a hollow cylinder. The first extension 121A is rotatably connected to the drive unit 114 within the receiving cavity 1111. The second extension 121B extends out of the receiving cavity 1111 from the first groove 1112 and is connected to the Hall sensor 122. The extension axis of the first extension 121A is perpendicular to the extension axis of the second extension 121B. Based on the above-mentioned configurations, specifically, the drive unit 114 can be a rotary motor, and the output end of the rotary motor can be fixedly connected to the first extension 121A. The cylindrical first extension 121A makes it easier to connect to the rotary motor, and the extension axis of the first extension 121A is the rotation axis of the bracket assembly 120 relative to the camera assembly 110. In addition, the second extension 121B is also cylindrical, and the arrangement that the extension axis of the second extension 121B is perpendicular to the extension axis of the first extension 121A makes it easier for the second extension 121B to partially extend out of the first groove 1112 without occupying too much space, and to rotate within the first groove 1112. This reduces the volume of the first groove 1112 and makes the sidewall of the first groove 1112 as close as possible to the second extension 121B, which helps to prevent the operation of the Hall sensor 122 and the magnetic ring from being affected by the external environment, and makes the camera device 100 more aesthetically pleasing.

[0055] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the application concept of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An image pickup device characterized by comprising: The camera device comprises: a camera assembly comprising a housing having a receiving cavity and a first slot communicating with the receiving cavity, and a magnet fixedly connected to a side wall of the first slot and capable of generating a magnetic field after being energized; a support assembly rotatably connected to the camera assembly for adjusting the orientation of the camera assembly, the support assembly comprising a support body and a Hall sensor, the Hall sensor being connected to the support body, the support body being rotatably connected to the camera assembly in the receiving cavity and extending out of the receiving cavity through the first slot, the Hall sensor being oppositely arranged with the magnet, and the Hall sensor being configured to send a rotation signal when the magnet rotates relative to the Hall sensor; a control assembly configured to determine the rotation angle of the camera assembly relative to the support assembly according to the rotation signal.

2. The camera of claim 1, wherein The Hall sensor is configured to send the rotation signal when the magnitude of the Hall voltage generated by the Hall sensor exceeds a set threshold during the rotation of the magnet relative to the Hall sensor.

3. The camera device according to claim 2, wherein the control assembly is electrically connected to the Hall sensor, the control assembly being configured to control the rotation of the camera assembly relative to the support assembly, the control assembly being configured to determine the rotation angle of the camera assembly relative to the support assembly according to the rotation signal and to adjust the rotation angle of the camera assembly relative to the support assembly.

4. The camera device according to claim 1, wherein during the rotation of the magnet relative to the support assembly, a projection of the magnet in a projection direction parallel to the rotation axis of the magnet covers a projection of the Hall sensor in a projection plane perpendicular to the projection direction.

5. The camera device according to claim 1, wherein the housing comprises an arc-shaped peripheral wall, the arc-shaped peripheral wall being located at an end of the housing and forming the first slot, and the arc-shaped peripheral wall and the first slot both extend in a direction surrounding the rotation axis of the magnet.

6. The camera device according to claim 5, wherein the arc-shaped peripheral wall comprises a first end and a second end oppositely arranged and connected to each other in the direction surrounding the rotation axis, the first slot is arranged at the first end, and the second end is in the form of a closed arc surface.

7. The camera device according to claim 1, wherein a second slot is arranged on a side of the support body facing the magnet, and the Hall sensor is connected to a slot wall of the second slot.

8. The camera device according to claim 7, wherein the support assembly further comprises a cover body detachably connected to the support body and covering the second slot.

9. The camera device according to claim 1, wherein the camera assembly further comprises a driving portion located in the receiving cavity, one end of the driving portion being fixedly connected to the housing and the other end being rotatably connected to the support assembly, so that the camera assembly can rotate relative to the support assembly.

10. The camera device according to claim 9, wherein The support body comprises a first extension part and a second extension part, the first extension part and the second extension part are both in the shape of a cylinder, the first extension part is rotationally connected with the driving part in the accommodating cavity, the second extension part extends out of the accommodating cavity from the first slot and is connected with the Hall sensor, and the extension axis of the first extension part is perpendicular to the extension axis of the second extension part.

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