Data transmission device of dome camera, dome camera and data transmission method
阅读说明:本技术 球型摄像机的数据传输装置、球型摄像机及数据传输方法 (Data transmission device of dome camera, dome camera and data transmission method ) 是由 陈文华 谷玉彬 潘添翼 张雪涛 蔡文俊 郑明淋 于 2018-06-28 设计创作,主要内容包括:本发明实施例提供了一种球型摄像机的数据传输装置、球型摄像机及数据传输方法,所述数据传输装置包括:第一无线模块、天线板和第二无线模块。第一无线模块与球型摄像机的转动组件固定连接,并且第一无线模块与转动组件中的视频采集设备连接,能够获取视频信息。第二无线模块和天线板分别与球型摄像机的固定组件固定连接,并且天线板通过数据线与第二无线模块连接。第一无线模块通过天线板能够实现与第二无线模块之间的无线连接,实现了视频信息从转动组件向固定组件传输。不需要采用光纤滑环等设备,使得视频信息能够稳定的传输。(The embodiment of the invention provides a data transmission device of a dome camera, the dome camera and a data transmission method, wherein the data transmission device comprises: the antenna comprises a first wireless module, an antenna board and a second wireless module. The first wireless module is fixedly connected with a rotating assembly of the dome camera, and the first wireless module is connected with video acquisition equipment in the rotating assembly and can acquire video information. The second wireless module and the antenna board are respectively and fixedly connected with the fixing component of the dome camera, and the antenna board is connected with the second wireless module through a data line. The first wireless module can be wirelessly connected with the second wireless module through the antenna plate, and video information is transmitted from the rotating assembly to the fixed assembly. And equipment such as an optical fiber slip ring and the like is not required, so that the video information can be stably transmitted.)
1. A data transmission device of a dome camera, characterized in that the data transmission device comprises: the antenna comprises a first wireless module, an antenna board and a second wireless module;
the first wireless module is fixedly connected with a rotating assembly of the dome camera and synchronously rotates along with the rotating assembly, and is connected with video acquisition equipment in the rotating assembly to acquire video information acquired by the video acquisition equipment;
the second wireless module and the antenna board are respectively fixedly connected with a fixed component of the dome camera, the antenna board is connected with the second wireless module through a data line, and the antenna board is used for receiving wireless signals sent by the first wireless module and/or sending wireless signals to the first wireless module;
the first wireless module converts the acquired video information into wireless signals and sends the wireless signals to the antenna board, the antenna board receives the wireless signals and transmits the wireless signals to the second wireless module through the data line, and the second wireless module converts the wireless signals into corresponding video information and transmits the video information to the outside of the dome camera.
2. The data transmission apparatus of claim 1, wherein the first wireless module comprises: the antenna comprises a first wireless chip assembly and a first on-board antenna, wherein the first wireless chip assembly is connected with the first on-board antenna;
the second wireless module comprises a second wireless chip assembly and a second onboard antenna, and the second wireless chip assembly is connected with the second onboard antenna;
the second on-board antenna is connected with the antenna board through the data line.
3. The data transmission apparatus according to claim 1 or 2, characterized in that the data transmission apparatus further comprises: a power panel;
the second wireless module is arranged on the power panel, and the power panel is fixedly connected with the fixing component;
the power panel is provided with a power module, and the power module is connected with the second wireless module and used for supplying power to the second wireless module.
4. The data transmission apparatus according to claim 3, characterized in that the data transmission apparatus further comprises: a data transmission cable;
one end of the data transmission cable is connected with the power panel, and the second wireless module on the power panel sends the video information to external equipment connected with the other end of the data transmission cable through the data transmission cable.
5. The data transmission apparatus according to claim 1 or 2, characterized in that the data transmission apparatus further comprises: a cloud deck;
the first wireless module is mounted on the cloud deck;
the cloud platen is fixedly connected with the rotating assembly and synchronously rotates along with the rotating assembly;
the cloud platen is connected with video acquisition equipment in the rotating assembly and used for acquiring video information acquired by the video acquisition equipment.
6. The data transmission device of claim 5, wherein the cloud deck is horizontally mounted on the end surface of the rotating component close to the fixed component;
the antenna plate is horizontally arranged on the end surface of the fixed component close to the rotating component;
the cloud platform plate is provided with the plate surface of the first wireless module, and the plate surface of the first wireless module is arranged opposite to and parallel to the plate surface of the antenna plate.
7. The data transmission device of claim 1, wherein the data line is a radio frequency coaxial cable.
8. Dome camera characterized in that it comprises a data transmission device according to any one of claims 1 to 7.
9. The dome camera of claim 8, wherein the dome camera comprises: a fixed component and a rotating component;
the fixed assembly is positioned above the rotating assembly and is rotationally connected with the rotating assembly;
the fixing assembly includes: a stationary housing;
the fixed shell is a hollow shell structure, and the second wireless module is fixedly arranged in the fixed shell;
the first end face, close to the rotating assembly, of the fixed shell is provided with a cylindrical protruding part;
the protruding part is provided with a first through hole which is used for communicating the inside of the fixed shell;
the antenna plate is mounted on the end face of the protruding part, and the data line passes through the first through hole and is respectively connected with the second wireless module and the antenna plate;
correspondingly, the rotating assembly comprises: rotating the housing and the video acquisition device;
the rotating shell is of a hollow shell structure, the first wireless module and the video acquisition equipment are respectively arranged in the rotating shell, and the video acquisition equipment is connected with the first wireless module;
the rotating shell is close to the second end face of the fixed component and is provided with a second through hole;
the protruding part of the fixed shell is nested in the second through hole, so that the antenna plate arranged on the end face of the protruding part extends into the rotating shell;
the outer surface of the protruding portion is rotatably connected with the inner surface of the second through hole through a bearing, so that relative rotation between the rotating shell and the fixed shell is realized.
10. The ball-type camera of claim 9, wherein if the second wireless module is integrated on a power board and the first wireless module is integrated on a pan/tilt board, the ball-type camera further comprises a slip ring;
the slip ring is arranged in the first through hole, and the data wire penetrates through a mounting hole in the slip ring and is respectively connected with the power panel and the antenna panel;
a fixed end cable of the slip ring is connected with the power panel;
and a rotating end cable of the slip ring is connected with the cradle head plate and used for supplying power to the cradle head plate.
11. The dome camera of claim 10, wherein the cloud deck is centrally provided with a central aperture;
and a cable at the rotating end of the slip ring penetrates through the central hole and is connected with the holder plate.
12. The data transmission device according to claim 10, wherein an annular boss protruding into the inside of the rotary housing is provided on an inner side surface of the first end surface of the rotary housing;
the cloud platform plate is horizontally arranged on the end surface of the circular boss;
the antenna plate is horizontally arranged on the end surface of the protruding part;
the holder plate is integrated with the end face of the first wireless module and is arranged opposite to the end face of the antenna plate.
13. The dome camera of claim 9, wherein a motor is fixedly mounted within the rotatable housing;
a synchronizing wheel is fixedly installed on the end face of the protruding part of the fixed shell, and the antenna plate is installed on the end face of the synchronizing wheel;
the output shaft of the motor is rotationally connected with the synchronous wheel through a synchronous belt;
when the motor rotates, the synchronous belt drives the rotating shell to horizontally rotate relative to the fixed shell.
14. The dome camera of claim 9, wherein the fixture assembly further comprises a housing;
the inner side of the outer cover is fixedly connected with the fixed shell, and the fixed shell and the rotating shell are arranged inside the outer cover.
15. The dome camera of claim 9, wherein the stationary housing and the rotatable housing are made of a metallic material.
16. The dome camera of claim 9, wherein the video capture device is a webcam IPC.
17. A data transmission method applied to the dome camera according to any one of claims 8 to 16, the method comprising:
the video acquisition equipment transmits data information to the first wireless module;
the first wireless module converts the data information into a wireless signal;
the first wireless module sends the wireless signal to an antenna board;
the antenna board sends the wireless signal to a second wireless module;
the second wireless module converts the wireless signal into the data information and transmits the data information to the outside of the dome camera.
18. The method of claim 17, wherein the data information comprises: the video acquisition device comprises video information and first control information, wherein the first control information is control information sent by the first wireless module or the video acquisition device.
19. The method of claim 18, wherein when the data information is video information, before the first wireless transmits the wireless signal to an antenna panel, the method comprises:
the first wireless module binds a port for sending the wireless signal under a target bridge port;
the second wireless module binds a port for receiving the wireless signal through the antenna board under the target network bridge port;
and the first wireless module and the second wireless module establish wireless transmission connection.
20. The method of claim 18, wherein when the data information is first control information, the video capture device transmits the data information to a first wireless module, comprising:
the video acquisition equipment transmits the data information to a first wireless module through a multicast message;
the first wireless module sends the wireless signal to an antenna board, and the method comprises the following steps:
and the first wireless module sends the wireless signal to an antenna board through a management frame of a wireless network WiFi.
21. The method of claim 17, further comprising:
the second wireless module acquires second control information, wherein the second control information is used for controlling the video acquisition equipment;
the second wireless module converts the second control information into a wireless signal and sends the wireless signal to the first wireless module through the antenna plate;
the first wireless module converts the wireless signal into the second control information and sends the second control information to the video acquisition equipment, so that the video acquisition equipment realizes corresponding control according to the second control information.
Technical Field
The invention relates to the technical field of monitoring equipment, in particular to a data transmission device of a dome camera, the dome camera and a data transmission method.
Background
The ball-type camera is a camera integrating the functions of a color integrated camera, a pan-tilt, a decoder, a protective cover and the like. The dome camera is convenient to install and simple to use, is particularly suitable for video monitoring in open areas, and is widely applied.
The dome camera can be mainly composed of two parts, wherein the fixed part can be called as a fixed component; the part capable of rotating can be called as a rotating assembly; the fixed component and the rotating component can be rotationally connected. Fixed subassembly can with the mounted position fixed connection of ball-type camera, and the runner assembly can carry out certain limit or 360 degrees rotations, and the video acquisition equipment of the inside video acquisition of runner assembly, devices such as camera just can gather the video information of the scene in the pivoted angle range. Thereby greatly enlarging the video monitoring range of the spherical camera. The fixed component is provided with a device for data transmission, which can be connected with an external line, so that the Video information acquired by the dome camera can be transmitted to the outside of the dome camera, for example, the acquired Video information is transmitted to an external device connected with the dome camera, such as a router, a storage device, a DVR (Digital Video Recorder), a display device, and the like, through a network.
Because the video acquisition equipment in the dome camera is installed in the runner assembly, and the runner assembly rotates with fixed subassembly and is connected. Therefore, the video information collected by the video collecting equipment in the rotating assembly cannot be transmitted to the fixed assembly by using a common cable, and the video information cannot be transmitted to the outside through a corresponding line. In the prior art, therefore, the transmission of video information between the rotating and stationary components is generally realized by fiber-optic slip rings.
The optical slip ring generally comprises a fixed end cable and a rotating end cable, wherein the fixed end cable can be connected with a data transmission device in the fixed assembly, and the rotating end cable can be connected with a video acquisition device and the like in the rotating assembly. The electromechanical slip ring can realize the transmission of video information between the fixed end cable and the rotating end cable under the rotating working condition through the conversion of the internal rotating structure and the photoelectric signal.
However, because the precision of the optical fiber slip ring is very high, in the actual use process of the currently used optical fiber slip ring, due to vibration, friction and other reasons when the rotating assembly rotates, the conversion of photoelectric signals inside the optical fiber slip ring is easily affected, and the work cannot be stabilized, so that the stable transmission of video information cannot be realized between the fixed assembly and the rotating assembly in the spherical camera, and further the video signals collected by the video collecting equipment in the rotating assembly cannot be normally transmitted to the outside.
Disclosure of Invention
An object of embodiments of the present invention is to provide a data transmission device for a dome camera, a dome camera and a data transmission method, so as to achieve stable transmission of video information between a fixed component and a rotating component in the dome camera. The specific technical scheme is as follows:
the embodiment of the invention provides a data transmission device of a dome camera, which comprises: the antenna comprises a first wireless module, an antenna board and a second wireless module;
the first wireless module is fixedly connected with a rotating assembly of the dome camera and synchronously rotates along with the rotating assembly, and is connected with video acquisition equipment in the rotating assembly to acquire video information acquired by the video acquisition equipment;
the second wireless module and the antenna board are respectively fixedly connected with a fixed component of the dome camera, the antenna board is connected with the second wireless module through a data line, and the antenna board is used for receiving wireless signals sent by the first wireless module and/or sending wireless signals to the first wireless module;
the first wireless module converts the acquired video information into wireless signals and sends the wireless signals to the antenna board, the antenna board receives the wireless signals and transmits the wireless signals to the second wireless module through the data line, and the second wireless module converts the wireless signals into corresponding video information and transmits the video information to the outside of the dome camera.
Optionally, the first wireless module includes: the antenna comprises a first wireless chip assembly and a first on-board antenna, wherein the first wireless chip assembly is connected with the first on-board antenna;
the second wireless module comprises a second wireless chip assembly and a second onboard antenna, and the second wireless chip assembly is connected with the second onboard antenna;
the second on-board antenna is connected with the antenna board through the data line.
Optionally, the data transmission apparatus further includes: a power panel;
the second wireless module is arranged on the power panel, and the power panel is fixedly connected with the fixing component;
the power panel is provided with a power module, and the power module is connected with the second wireless module and used for supplying power to the second wireless module.
Optionally, the data transmission apparatus further includes: a data transmission cable;
one end of the data transmission cable is connected with the power panel, and the second wireless module on the power panel sends the video information to external equipment connected with the other end of the data transmission cable through the data transmission cable.
Optionally, the data transmission apparatus further includes: a cloud deck;
the first wireless module is mounted on the cloud deck;
the cloud platen is fixedly connected with the rotating assembly and synchronously rotates along with the rotating assembly;
the cloud platen is connected with video acquisition equipment in the rotating assembly and used for acquiring video information acquired by the video acquisition equipment.
Optionally, the cloud platform plate is horizontally installed on the end surface of the rotating assembly close to the fixed assembly;
the antenna plate is horizontally arranged on the end surface of the fixed component close to the rotating component;
the cloud platform plate is provided with the plate surface of the first wireless module, and the plate surface of the first wireless module is arranged opposite to and parallel to the plate surface of the antenna plate.
Optionally, the data line is a radio frequency coaxial cable.
The embodiment of the invention also provides a dome camera which comprises any one of the data transmission devices.
Optionally, the dome camera includes: a fixed component and a rotating component;
the fixed assembly is positioned above the rotating assembly and is rotationally connected with the rotating assembly;
the fixing assembly includes: a stationary housing;
the fixed shell is a hollow shell structure, and the second wireless module is fixedly arranged in the fixed shell;
the first end face, close to the rotating assembly, of the fixed shell is provided with a cylindrical protruding part;
the protruding part is provided with a first through hole which is used for communicating the inside of the fixed shell;
the antenna plate is mounted on the end face of the protruding part, and the data line passes through the first through hole and is respectively connected with the second wireless module and the antenna plate;
correspondingly, the rotating assembly comprises: rotating the housing and the video acquisition device;
the rotating shell is of a hollow shell structure, the first wireless module and the video acquisition equipment are respectively arranged in the rotating shell, and the video acquisition equipment is connected with the first wireless module;
the rotating shell is close to the second end face of the fixed component and is provided with a second through hole;
the protruding part of the fixed shell is nested in the second through hole, so that the antenna plate arranged on the end face of the protruding part extends into the rotating shell;
the outer surface of the protruding portion is rotatably connected with the inner surface of the second through hole through a bearing, so that relative rotation between the rotating shell and the fixed shell is realized.
Optionally, if the second wireless module is integrated on a power panel and the first wireless module is integrated on a pan/tilt panel, the dome camera further includes a slip ring;
the slip ring is arranged in the first through hole, and the data wire penetrates through a mounting hole in the slip ring and is respectively connected with the power panel and the antenna panel;
a fixed end cable of the slip ring is connected with the power panel;
and a rotating end cable of the slip ring is connected with the cradle head plate and used for supplying power to the cradle head plate.
Optionally, a center hole is formed in the center of the cloud platen;
and a cable at the rotating end of the slip ring penetrates through the central hole and is connected with the holder plate.
Optionally, an annular boss protruding into the rotating housing is arranged on the inner side surface of the first end surface of the rotating housing;
the cloud platform plate is horizontally arranged on the end surface of the circular boss;
the antenna plate is horizontally arranged on the end surface of the protruding part;
the holder plate is integrated with the end face of the first wireless module and is arranged opposite to the end face of the antenna plate.
Optionally, a motor is fixedly installed in the rotating shell;
a synchronizing wheel is fixedly installed on the end face of the protruding part of the fixed shell, and the antenna plate is installed on the end face of the synchronizing wheel;
the output shaft of the motor is rotationally connected with the synchronous wheel through a synchronous belt;
when the motor rotates, the synchronous belt drives the rotating shell to horizontally rotate relative to the fixed shell.
Optionally, the fixing assembly further comprises a housing;
the inner side of the outer cover is fixedly connected with the fixed shell, and the fixed shell and the rotating shell are arranged inside the outer cover.
Optionally, the fixed housing and the rotating housing are made of metal materials.
Optionally, the video acquisition device is a network camera IPC.
The embodiment of the invention also provides a data transmission method which is applied to any one of the spherical cameras, and the method comprises the following steps:
the video acquisition equipment transmits data information to the first wireless module;
the first wireless module converts the data information into a wireless signal;
the first wireless module sends the wireless signal to an antenna board;
the antenna board sends the wireless signal to a second wireless module;
the second wireless module converts the wireless signal into the data information and transmits the data information to the outside of the dome camera.
Optionally, the data information includes: the video acquisition device comprises video information and first control information, wherein the first control information is control information sent by the first wireless module or the video acquisition device.
Optionally, when the data information is video information, before the first wireless sends the wireless signal to the antenna board, the method includes:
the first wireless module binds a port for sending the wireless signal under a target bridge port;
the second wireless module binds a port for receiving the wireless signal through the antenna board under the target network bridge port;
and the first wireless module and the second wireless module establish wireless transmission connection.
Optionally, when the data information is first control information, the video capture device transmits the data information to the first wireless module, including:
the video acquisition equipment transmits the data information to a first wireless module through a multicast message;
the first wireless module sends the wireless signal to an antenna board, and the method comprises the following steps:
and the first wireless module sends the wireless signal to an antenna board through a management frame of a wireless network WiFi.
Optionally, the method further includes:
the second wireless module acquires second control information, wherein the second control information is used for controlling the video acquisition equipment;
the second wireless module converts the second control information into a wireless signal and sends the wireless signal to the first wireless module through the antenna plate;
the first wireless module converts the wireless signal into the second control information and sends the second control information to the video acquisition equipment, so that the video acquisition equipment realizes corresponding control according to the second control information.
The embodiment of the invention provides a data transmission device of a dome camera, the dome camera and a data transmission method, wherein in the data transmission device, a first wireless module is fixedly connected with a rotating assembly, and a second wireless module and an antenna board are respectively fixedly connected with the fixed assembly and connected with video acquisition equipment in the rotating assembly; the first wireless module converts the acquired video information into wireless signals, the wireless signals are sent to the antenna board, the antenna board transmits the wireless signals to the second wireless module, the second wireless module converts the wireless signals into corresponding video information, and the video information is transmitted to the outside of the dome camera. Therefore, the first wireless module can be wirelessly connected with the second wireless module through the antenna plate, and video information is transmitted from the rotating assembly to the fixed assembly. And equipment such as an optical fiber slip ring and the like is not required, so that the video information can be stably transmitted. And the video information is transmitted in a wireless connection mode, compared with the traditional mode of adopting a slip ring, the method is not limited by the structure of the dome camera, and the miniaturization of the dome camera can be realized. Of course, it is not necessary for any product or method of practicing the invention to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a first structural diagram of a data transmission device according to an embodiment of the present invention;
fig. 2 is a second structural diagram of a data transmission device according to an embodiment of the present invention;
fig. 3 is a third structural diagram of a data transmission device according to an embodiment of the present invention;
FIG. 4 is a block diagram of a dome camera in accordance with an embodiment of the present invention;
fig. 5 is a flowchart of a data transmission method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention, where the data transmission device includes: a
The
The rotating assembly of the dome camera comprises a mechanism and parts which can rotate relative to the fixed assembly in the dome camera. Such as the camera lens of the dome camera, the transmission mechanism, and components such as a controller and a data processor which are necessary for realizing the normal operation of the dome camera. The components form a rotating part of the ball-type camera according to a certain assembly structure, namely a rotating component of the ball-type camera. Therefore, the rotating assembly at least comprises a video acquisition device for acquiring video information, such as the camera lens. Through the rotation of the rotating assembly, the video acquisition equipment can obtain video information in a larger area range. For example, after the rotating assembly rotates horizontally 360 degrees, video information within a range of 360 degrees can be collected. Meanwhile, the video capture device may further include a data processing element such as an encoder and a corresponding support circuit, which can correspondingly process the video information captured by the video capture device, for example, encode the video information.
The
The
In order to improve the working performance of the video capture device, in practical applications, the video capture device may be an IPC (IP Camera), and the IPC can encode the captured video information and transmit the encoded video information through a network, such as a local area network or the internet. Therefore, when the video capture device is an IPC, the video capture device may be connected to the
The
The
The
The
In practical applications, the
The
The
Referring to fig. 2, in order to enable the
The first
The first on-
The
Similar to the
The second on-
The
When the dome camera shoots, the video acquisition equipment in the rotating assembly can acquire video information of a shooting area in real time, and then correspondingly process the video information, such as coding and the like. The
Meanwhile, the video capture device may also send first control information for implementing data control to the
In addition, the
In the above process, the
In order to realize that the path can be completely hidden from the outside, the data transmission rate between the AP and other external devices can be synchronized to the data transmission rate between the AP and the STA. The network is blocked. And whether the WDS connection between the AP and the STA is normal or not is monitored in real time, and once short circuit occurs, the connection needs to be restored immediately. Meanwhile, after the AP, STA, and other components are powered on, the WDS connection needs to be established immediately, and cannot wait for a long time in the connection establishment phase.
In the embodiment of the invention, a first wireless module is fixedly connected with a rotating assembly, and a second wireless module and an antenna plate are respectively fixedly connected with the fixed assembly and connected with video acquisition equipment in the rotating assembly; the first wireless module converts the acquired video information into wireless signals, the wireless signals are sent to the antenna board, the antenna board transmits the wireless signals to the second wireless module, the second wireless module converts the wireless signals into corresponding video information, and the video information is transmitted to the outside of the dome camera. Therefore, the first wireless module can be wirelessly connected with the second wireless module through the antenna plate, and video information is transmitted from the rotating assembly to the fixed assembly. And equipment such as an optical fiber slip ring and the like is not required, so that the video information can be stably transmitted. And the video information is transmitted in a wireless connection mode, compared with the traditional mode of adopting a slip ring, the method is not limited by the structure of the dome camera, and the miniaturization of the dome camera can be realized.
With reference to the foregoing embodiments, the data transmission device provided in the embodiments of the present invention further includes: the
The
The
The
The
In an implementation manner of the embodiment of the present invention, the
With reference to the foregoing embodiments, the data transmission apparatus provided in the embodiments of the present invention further includes: a
One end of the
In the embodiment of the present invention, the
The
The
In the embodiment of the present invention, by integrating the
With reference to the foregoing embodiments, as shown in fig. 3, the data transmission device provided in the embodiment of the present invention further includes: a
The
The
The
The
Similar to the
In the embodiment of the present invention, in order to make the wireless transmission between the
Therefore, when the
By the installation mode, the distance between the
In practical application, the data transmission device provided by the embodiment of the invention can be applied to various spherical cameras. Therefore, the embodiment of the present invention further provides a spherical camera, which can apply any of the above-mentioned data transmission devices.
The spherical camera provided by the embodiment of the invention is described in detail below by taking a spherical camera as an example with reference to the attached drawings. When the data transmission device provided by the embodiment of the invention is installed in other types of spherical cameras, the structure and the installation mode of the data transmission device are the same as or similar to those of the spherical cameras.
Referring to fig. 4, fig. 4 is a structural diagram of a spherical camera according to an embodiment of the present invention, and in fig. 4, a data transmission device according to an embodiment of the present invention may be installed in a spherical camera. The assembly relationship and the component structure shown in fig. 4 are only one implementation manner of the embodiment of the present invention, and in practical applications, the installation manner of the data transmission device provided by the embodiment of the present invention in the dome camera may be arranged according to practical situations. In the embodiment of the present invention, only the assembling relationship shown in fig. 4 is taken as an example for description.
As shown in fig. 4, a dome camera provided in an embodiment of the present invention includes: a stationary assembly 401 and a rotating assembly 402. The dome camera can be fixedly installed on a preset position such as a wall surface, a ceiling and the like in a hoisting mode. Therefore, the fixing member 401 can be fixedly connected to a connecting structure such as the rack 400 at a predetermined position. The fixed assembly 401 is located above the rotating assembly 402 and is rotatably connected with the rotating assembly 402. The rotating assembly 402 is installed at the lower side of the fixed assembly 401, and is rotatably connected with the rotating assembly 402 through a bearing or the like. It is thereby achieved that the rotating assembly 402 can rotate relative to the stationary assembly 401 without being affected by the connecting structure of the frame 400 or the like.
In an embodiment of the present invention, the fixing assembly 401 may include: the housing 411 is fixed.
The fixed housing 411 has a hollow housing structure, and the
In the dome camera shown in fig. 4, the
The first end surface 421 of the stationary housing 411 adjacent to the rotating assembly 402 has a cylindrical protrusion 431. The protrusion 431 has a first through hole for communicating the inside of the stationary housing 411.
As shown in fig. 4, the first end surface 421 of the stationary housing 411 has a protrusion 431 which is cylindrical and protrudes toward the rotating assembly 402. And the protrusion 431 has a first through hole. The first through hole can communicate the inside and the outside of the fixed housing 411, so that the parts such as the
The
The
Accordingly, the rotating assembly 402 includes: a rotating housing 412 and a video capture device (not shown).
The rotating housing 412 is a hollow housing structure, the
The rotating housing 412 may be a cylindrical housing, a conical housing, a funnel-shaped housing, etc., and the specific shape may be designed according to the requirement. The rotating housing 412 can provide a mounting base for the
In the dome camera shown in fig. 4, the
The rotating housing 412 has a second through hole on a second end face 422 near the fixed component 401. The protrusion 431 of the stationary housing 411 is fitted into the second through hole in a nested manner such that the
The protrusion 431 of the stationary housing 411 has a cylindrical shape and may function as a rotation shaft. And the second end face 422 of the rotary housing 412 has a certain thickness so that the second through hole can function as a bearing seat. The protrusion 431 is inserted into the second through hole. The outer cylindrical surface of the protrusion 431 mates with the inner surface of the bearing 432 and the inner cylindrical surface of the second through hole mates with the outer surface of the bearing 432. Thereby achieving the rotational coupling of the stationary housing 411 and the rotating housing 412.
And since the
In the embodiment of the present invention, an annular boss 434 protruding into the rotary housing 412 may be provided on the inner surface of the first end surface 421 of the rotary housing 412. The
The
When the
In practical applications, in combination with the above-mentioned embodiments, it is difficult to power the components of the rotating assembly 402 by using a built-in power supply in some cases. In order to provide power to the components in the rotating assembly 402, when the
The slip ring 433 is installed inside the first through hole, and the
As shown in fig. 4, the slip ring 433 has a cylindrical structure so as to be installed inside the first through hole. Since the slip ring 433 is installed inside the first through hole, the
The cable on the upper side of the slip ring 433 is a fixed end cable of the slip ring 433 and can be connected with the
Because the
Furthermore, in order to enable the cable at the rotating end of the sliding ring 433 to be more conveniently connected with the
As shown in fig. 4, the central axis of the first through hole in which the slip ring 433 is installed is also the central axis of the protrusion 431, so when the rotating-end cable of the slip ring 433 vertically passes through the central hole of the
Optionally, in the dome camera provided in the embodiment of the present invention, in order to enable the rotation of the rotating housing 412 and the video capture device, the pan/
A synchronizing wheel 437 is fixedly attached to an end surface of the protruding portion 431 of the fixed housing 411, and the
The synchronizing wheel 437 is fixedly connected with the end surface of the protrusion 431, and a cylindrical surface of the synchronizing wheel 437 may have tooth-like structures distributed at equal intervals. The timing belt 436 is a timing belt having the same tooth structure. Likewise, the output shaft of the motor 435 has a toothed configuration. Therefore, the timing belt 436 can be engaged with the tooth-like structures of the timing wheel 437 and the output shaft of the motor 435, respectively, to realize synchronous transmission.
When the motor 435 rotates, the rotating housing 412 is driven to rotate horizontally relative to the fixed housing 411 by the transmission of the timing belt 436.
Since the timing wheel 437 is fixedly connected to the projection 431. The sync wheel 437 does not rotate, and when the motor 435 rotates, the motor 435 drives the connected rotating housing 412 to make a planetary circular motion around the sync wheel 437 by the synchronous transmission of the sync belt 436. Thereby achieving rotation of the rotary housing 412. Of course, there are many transmission ways in the prior art to realize the rotation of the rotating housing 412 relative to the fixed housing 411. Therefore, as long as the functions required in the embodiments of the present invention can be achieved, various conventional transmission methods can be applied to the embodiments of the present invention, and the specific transmission method is not limited herein.
Optionally, in the embodiment of the present invention, in order to improve the protection level of the dome camera provided in the embodiment of the present invention, rainwater and the like are prevented from entering the inside of the product. The securing assembly 401 may also include a housing 438.
The outer cover 438 may be a conical or bamboo hat type housing. The big end face of the device is of an open structure. The inner side of the outer cover 438 may be fixedly coupled with the fixed housing 411 such that the fixed housing 411 and the rotating housing 412 are installed inside the outer cover 438.
The cover 438 may cover the fixed housing 411 and the rotating housing 412 inside thereof, thereby providing a further protection to the fixed housing 411 and the rotating housing 412, and particularly when it rains, effectively preventing rainwater from entering the inside of the fixed housing 411 and the rotating housing 412.
In the embodiment of the present invention, due to the form of wireless transmission, the wireless transmission between the
Optionally, in the embodiment of the present invention, in order to improve the working performance of the video capture device, the video capture device may be a network camera IPC. The IPC can realize the transmission of the collected video information in a local area network or internet mode. Therefore, higher-speed transmission can be realized, and the distribution of the monitoring system can be wider.
In the embodiment of the present invention, the IPC may be connected to the
Referring to fig. 5, fig. 5 is a flowchart of a data transmission method according to an embodiment of the present invention, where the data transmission method can be applied to any of the above-mentioned dome cameras. The data transmission method provided by the embodiment of the invention comprises the following steps:
The video acquisition device can transmit data information to the first wireless module through a network cable, a cable and the like. Wherein, the data information may include: the video acquisition device comprises video information and first control information, wherein the first control information is control information sent by a first wireless module or video acquisition equipment.
The video information is the video information of the shooting scene collected by the video collecting device, and can be an original continuous video frame or a data packet after being coded.
The first control information may include control information generated by the video capture device or the first wireless module and required to be transmitted to the outside, and may include, for example: external device control information, software upgrading information, debugging information, network port control information, alarm information and the like.
The first wireless module can convert the data information into a wireless signal and transmit the wireless signal, and the antenna board is close to the first wireless module, so that the wireless signal can be directly received.
And 505, the second wireless module converts the wireless signal into data information and transmits the data information to the outside of the dome camera.
The antenna board can send wireless signals to the second wireless module through the data line, the second wireless module converts the wireless signals into corresponding data information, and then the second wireless module can send the data information to connected external equipment such as a router and a monitoring system server through data transmission cables such as a network cable.
In the embodiment of the invention, the wireless connection between the first wireless module and the second wireless module is realized through the method, and the data information can be transmitted from the rotating component to the fixed component of the dome camera without adopting parts such as an optical fiber slip ring and the like.
Optionally, in the data transmission method provided in this embodiment of the present invention, when the data information is video information, before the first wireless sends the wireless signal to the antenna board in
in the first step, the first wireless module binds the port for sending the wireless signal under the port of the target bridge.
And secondly, binding a port for receiving the wireless signal through the antenna board under the port of the target network bridge by the second wireless module.
And thirdly, establishing wireless transmission connection between the first wireless module and the second wireless module.
Through the above 3 steps, when the user accesses or queries the dome camera through the server of the monitoring system or other devices, the wireless transmission path between the first wireless module and the second wireless module can be completely hidden from the outside, that is, the user directly accesses or queries the first wireless module and can only see the MAC address information of the first wireless module.
Specifically, the following description is given as a practical example. In practical use, the first wireless module and the second wireless module may adopt an AR9331 type wireless chip assembly. That is, the first wireless module may be a first AR9331, and the second wireless module may be a second AR 9331.
The video capture device, such as IPC, is connected to the first AR9331 through a network cable, and the first AR9331 binds the port eth0 for sending wireless signals under the target bridge port br 0. The second AR9331 also binds port eth0, which receives wireless signals through the antenna board, under the target bridge port br 0. The first AR9331 serves as an STA, and the second AR9331 serves as an AP to implement connection after four-way handshake.
Optionally, in the data transmission method provided in this embodiment of the present invention, when the data information is first control information, in
the video acquisition equipment transmits the data information to the first wireless module through the multicast message.
The multicast message transmission means that a video acquisition device, such as an IPC, may run a preset program, encapsulate data information into a message according to an AF _ PACKET protocol domain, and set a destination address of the message as a preset multicast address, such as 01:02:03:04:05: 06. And sending the message to the first wireless module. The first wireless module judges whether the destination address of the message is a preset multicast address, such as 01:02:03:04:05: 06. If so, processing the message according to the type of the message. For example, when the message is external device control information, the message is converted into a wireless signal and transmitted to the second wireless module through the antenna board. And then the second wireless module transmits the data to the outside to realize the control of the external equipment.
Correspondingly, when the data information is the first control information, in
the first wireless module sends the wireless signal to the antenna board through a management frame of the wireless network WiFi.
The first wireless module may encapsulate the acquired first control information into a management frame protocol header of 802.11 through a built-in wireless driver, and then invoke the first wireless module sending port to send the encapsulated data.
In the embodiment of the invention, the transmission channel of the first control information is independent from the transmission channel of the video information through multicast message transmission and the management frame of WiFi, so that the transmission of the video information is not influenced when the first control information is transmitted.
Optionally, in the data transmission method provided in the embodiment of the present invention, the method further includes:
step 506, the second wireless module obtains second control information, where the second control information is control information for controlling the video capture device.
The second control information is information capable of controlling the video capture device and may include various instructions, such as reset, sleep, and the like. The second wireless module may generate the second control information itself, or may receive the second control information through an external device.
Step 507, the second wireless module converts the second control information into a wireless signal, and sends the wireless signal to the first wireless module through the antenna board.
And step 508, the first wireless module converts the wireless signal into second control information and sends the second control information to the video acquisition equipment, so that the video acquisition equipment realizes corresponding control according to the second control information.
The second wireless module can also convert the second control information into a wireless signal and send the wireless signal through the antenna board, and the first wireless module can also convert the wireless signal into the second control information after receiving the wireless signal. And then the second control information is transmitted to the video acquisition equipment by means of network cables and the like. The video capture device may perform corresponding functions or steps according to the received second control information.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
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