CN114500814B

CN114500814B - Video camera

Info

Publication number: CN114500814B
Application number: CN202210130583.4A
Authority: CN
Inventors: 方伟; 乔丹; 毛誉杰; 闫富贵
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2023-02-28
Anticipated expiration: 2042-02-11
Also published as: CN114500814A

Abstract

The present invention provides a camera including: a housing structure having a receiving cavity, the housing structure being made of an electrically conductive material; the communication module is arranged in the accommodating cavity; the antenna feeder comprises an inner core, an outer copper mesh and an outer skin which are sequentially arranged from inside to outside, wherein the outer skin is provided with an exposed area, and the outer copper mesh is exposed out of the exposed area; spacing portion, spacing portion and shell structural connection, spacing portion will be located the outer copper mesh pressure in the exposed district on shell structure. In this scheme, through the mode that sets up that the spacing part compressed tightly outer copper mesh and shell structure, guaranteed that communication signal can pass through antenna feeder smoothly and transmit to communication module to can block the propagation path of interference source like this, solve low frequency interference effectively, promote the wireless receiving function of camera. The inner core does not carry out any processing, so that the communication signals are not influenced, and the normal transmission of the communication signals is ensured.

Description

Video camera

Technical Field

The invention relates to the technical field of cameras, in particular to a camera.

Background

In recent years, the internet of things industry has developed rapidly, and radio has been used as an important basic support resource for the development of the internet of things from the first generation communication technology to the fifth generation communication at present. On one hand, the expansion of the communication frequency band is beneficial to improving the wireless performance such as the throughput of the equipment; on the other hand, when the device operates in such a wide frequency band, the receiving performance of the device may be affected by the electromagnetic interference from the surrounding environment.

The spherical camera has the advantages of wide monitoring range, high rotating speed, multiple function integration and the like, and is widely applied to various areas and scenes. Structurally, in order to meet the requirements of water resistance, explosion resistance and the like, most of equipment materials are made of metal, and the antenna position adopts a non-metal structure; coating an insulating layer on the metal structure for the purpose of corrosion prevention; for the sake of aesthetic requirements, the antennas mostly adopt built-in antennas; functionally, the inside of the dome camera is provided with core devices such as a Central Processing Unit (CPU), a lens, a Double Data Rate (DDR) synchronous dynamic random access memory (DDR), and cables such as a power supply and a movement, and these devices inevitably cause interference to an antenna feeder line when working simultaneously, and finally cause the overall wireless performance of the device to be deteriorated, especially have a great influence on the wireless reception low-frequency performance of the whole device. Therefore, it is important to solve the problem of low-frequency interference of the dome camera.

Disclosure of Invention

The invention provides a camera, which aims to solve the problem of low-frequency interference of the camera in the prior art.

In order to solve the above problem, the present invention provides a camera including: a housing structure having a receiving cavity, the housing structure being made of an electrically conductive material; the communication module is arranged in the accommodating cavity; the antenna feeder comprises an inner core, an outer copper mesh and an outer skin which are sequentially arranged from inside to outside, wherein the outer skin is provided with an exposed area, and the exposed area is exposed out of the outer copper mesh; spacing portion, spacing portion and shell structural connection, spacing portion will be located the outer copper mesh pressure in exposed district on shell structure.

Further, shell structure includes casing and ground connection boss, and the casing has and holds the chamber, and the ground connection boss sets up on the inner wall of casing, and spacing portion and ground connection boss are connected, and spacing portion will be located the outer copper mesh pressure in naked district on the ground connection boss.

Furthermore, the grounding boss is provided with a positioning end face, the shell structure further comprises a limiting column arranged on the positioning end face, the outer copper mesh is pressed on the positioning end face by the limiting part, and at least one limiting column is arranged on each of two sides of the outer copper mesh.

Furthermore, the limiting part is provided with an avoiding hole, and one end, far away from the positioning end face, of the limiting column penetrates into the avoiding hole.

Furthermore, the avoiding holes are waist-shaped holes, the number of the avoiding holes is at least two, an included angle is formed between the length directions of two adjacent avoiding holes, two limiting columns penetrate into each avoiding hole, and the two limiting columns in each avoiding hole are respectively in limiting fit with the two sides of the outer copper mesh.

Further, spacing portion is including compressing tightly piece and fastener, and the fastener will compress tightly the piece and be connected to ground connection boss, compresses tightly the piece and compress tightly outer copper mesh.

Furthermore, the shell is spherical, the shell comprises a front hemisphere and a rear hemisphere which are connected with each other, the front hemisphere is provided with a camera, and the camera is positioned in the accommodating cavity and faces the camera; the grounding boss is positioned on the inner wall of the front hemisphere, and the grounding boss and the front hemisphere are of an integrated structure.

Furthermore, the camera also comprises a metal protective layer, and the outer surface of the outer copper mesh positioned in the exposed area is wrapped by the metal protective layer.

Further, shell structure includes the casing, and the casing has and holds the chamber, and the outside relative both sides of casing have first region of walking about the staff and the second region of walking about the staff respectively, and the camera still includes a plurality of cables, and the one end of every cable all is located and holds the intracavity, and every cable all passes the lateral wall of casing and gets into the second region of walking about the staff, and antenna feeder passes the lateral wall of casing and gets into first region of walking about the staff.

Furthermore, the camera is a spherical camera, the camera further comprises an outer cover, a first lug and a second lug, the first lug and the second lug are arranged on the outer cover at intervals, two opposite sides of the shell are hinged to the first lug and the second lug respectively, the first wiring area is located in the first lug, and the second wiring area is located in the second lug.

Furthermore, the camera further comprises a machine core, an installation frame and a bearing plate, wherein the machine core, the installation frame and the bearing plate are arranged in the accommodating cavity, the installation frame is connected with the inner wall of the shell structure, the machine core is installed on the installation frame, the bearing plate is connected with the machine core, and the communication module is installed on the bearing plate.

By applying the technical scheme of the invention, the invention provides a camera, which comprises: a housing structure having a receiving cavity, the housing structure being made of an electrically conductive material; the communication module is arranged in the accommodating cavity; the antenna feeder comprises an inner core, an outer copper mesh and an outer skin which are sequentially arranged from inside to outside, wherein the outer skin is provided with an exposed area, and the exposed area is exposed out of the outer copper mesh; spacing portion, spacing portion and shell structural connection, spacing portion will be located the outer copper mesh pressure in the exposed district on shell structure. Adopt this scheme, set up spacing portion and shell structure and connect, and press the outer copper mesh of the exposed area naked of antenna feeder exocuticle on shell structure, make outer copper mesh can effectively laminate with shell structure like this, so set up, guaranteed that antenna feeder can reliably ground through shell structure promptly, the outer copper mesh department of antenna feeder can be coupled to the interference signal that devices such as communication module produced like this, interference signal passes through outer copper mesh and reachs shell structure, interference signal can lead to the ground smoothly through shell structure afterwards, can not influence communication signal's demodulation. In this scheme, through the mode that sets up that the spacing part compressed tightly outer copper mesh and shell structure, guaranteed that communication signal can pass through antenna feeder smoothly and transmit to communication module to can block the propagation path of interference source like this, solve low frequency interference effectively, promote the wireless receiving function of camera. The inner core of the antenna feeder line is not processed, so that the communication signal is not influenced, and the normal transmission of the communication signal is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram illustrating a structure of a camera provided by an embodiment of the present invention;

figure 2 shows an exploded view of the camera of figure 1;

FIG. 3 shows a partial enlarged view of FIG. 1;

FIG. 4 shows the exploded view of FIG. 3;

fig. 5 shows a schematic view of the structure of the antenna feed line of fig. 1;

figure 6 shows a schematic diagram of the antenna feed and ground pad connections of figure 1.

Wherein the figures include the following reference numerals:

10. a housing structure; 11. an accommodating chamber; 12. a housing; 13. a grounding boss; 131. positioning the end face; 14. a limiting column;

20. a communication module;

30. an antenna feed line; 31. an inner core; 32. an outer copper mesh; 33. an outer skin; 331. an exposed area;

40. a limiting part; 41. avoiding holes; 42. a compression member; 43. a fastener;

61. a housing; 62. a first lug; 63. a second lug; 64. a movement; 65. a mounting frame; 66. and (3) carrying a plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides a camera including: a housing structure 10, the housing structure 10 having a receiving cavity 11, the housing structure 10 being made of an electrically conductive material; a communication module 20 disposed in the accommodation chamber 11; the antenna feeder 30 is characterized in that one end of the antenna feeder 30 is connected with the communication module 20, the antenna feeder 30 comprises an inner core 31, an outer copper mesh 32 and an outer skin 33 which are sequentially arranged from inside to outside, wherein the outer skin 33 is provided with an exposed area 331, and the exposed area 331 is exposed out of the outer copper mesh 32; the limiting part 40, the limiting part 40 and the shell structure 10 are connected, and the outer copper net 32 located in the exposed area 331 is pressed on the shell structure 10 by the limiting part 40.

By adopting the scheme, the limiting part 40 is arranged to be connected with the shell structure 10, the outer copper mesh 32 exposed out of the exposed area 331 on the outer skin of the antenna feeder 30 is pressed on the shell structure 10, so that the outer copper mesh 32 can be effectively attached to the shell structure 10, the arrangement ensures that the antenna feeder 30 can be reliably grounded, interference signals generated by devices such as the communication module 20 and the like can be coupled to the outer copper mesh 32 of the antenna feeder 30, the interference signals reach the shell structure 10 through the outer copper mesh 32, and then the interference signals can be smoothly guided into the ground through the shell structure 10 without affecting the demodulation of the communication signals. In this scheme, through the setting mode that spacing portion 40 compressed tightly outer copper mesh 32 and shell structure 10, guaranteed that communication signal can pass through antenna feeder 30 smoothly and transmit to communication module 20 to can block the propagation path of interference source like this, solve low frequency interference effectively, promote the wireless receiving function of camera. The inner core 31 of the antenna feeder 30 is not processed, so that the communication signal is not affected, and the normal transmission of the communication signal is ensured.

Wherein, shell structure 10 includes casing 12 and ground connection boss 13, and casing 12 has and holds chamber 11, and ground connection boss 13 sets up on the inner wall of casing 12, and spacing portion 40 and ground connection boss 13 are connected, and spacing portion 40 will be located the outer copper mesh 32 of naked district 331 and press on ground connection boss 13. By arranging the grounding boss 13 on the inner wall of the shell 12 and pressing the outer copper mesh 32 located in the exposed area 331 on the grounding boss 13 by the limiting portion 40, the outer copper mesh 32 and the shell structure 10 can be attached, so that the outer copper mesh 32 can be effectively grounded, and the outer copper mesh 32 can be prevented from falling off.

Further, the grounding boss 13 has a positioning end face 131, the housing structure 10 further includes a limiting post 14 disposed on the positioning end face 131, the outer copper mesh 32 is pressed on the positioning end face 131 by the limiting portion 40, and at least one limiting post 14 is disposed on both sides of the outer copper mesh 32. Both sides of the outer copper mesh 32 are provided with at least one limiting column 14, and the limiting columns 14 can limit both sides of the outer copper mesh 32 to limit the position of the outer copper mesh 32. Wherein, the spacing column 14 and the grounding lug boss 13 are of an integrated structure.

In the present embodiment, the limiting portion 40 has an avoiding hole 41, and one end of the limiting column 14 away from the positioning end surface 131 penetrates into the avoiding hole 41. Through setting up dodging hole 41, can play the effect of dodging to the one end that spacing post 14 keeps away from location terminal surface 131, the spacing post 14 of being convenient for passes.

The avoiding holes 41 are waist-shaped holes, the number of the avoiding holes 41 is at least two, an included angle is formed between the length directions of every two adjacent avoiding holes 41, two limiting columns 14 penetrate into each avoiding hole 41, and the two limiting columns 14 in each avoiding hole 41 are in limit fit with the two sides of the outer copper net 32 respectively. By adopting the arrangement mode, the two limiting columns 14 in each avoidance hole 41 are respectively in limiting fit with the two sides of the outer copper mesh 32, so that the two sides of the outer copper mesh 32 can both have a limiting effect to limit the position of the outer copper mesh 32.

In the present embodiment, the position limiting portion 40 includes a pressing member 42 and a fastening member 43, the fastening member 43 connects the pressing member 42 to the grounding boss 13, and the pressing member 42 presses the outer copper mesh 32. A pressing member 42 is provided for pressing the outer copper mesh 32; a fastener 43 is provided for connecting the hold-down member 42 to the ground boss 13.

Alternatively, the positioning end face 131 has positioning holes, the fasteners 43 are connected with the positioning holes, the number of the fasteners 43 is two, and the outer copper mesh 32 is located between the two fasteners 43.

Optionally, the grounding boss 13 is a semi-cylinder and a trapezoidal cylinder connected to each other, the trapezoidal cylinder is connected to the inner wall of the housing 12, the positioning end face 131 is shaped as a semi-cylinder and a trapezoidal face connected to each other, the pressing member 42 is a plate, and the shape of the pressing member 42 matches the shape of the positioning end face 131.

Wherein the fastener comprises a washer disposed at the positioning hole and a bolt between the bolt and the pressing member for connecting the pressing member 42 to the ground boss 13.

In this embodiment, the housing 12 is spherical, the housing 12 includes a front hemisphere and a rear hemisphere connected to each other, the front hemisphere has a camera, the camera further includes a camera, and the camera is located in the accommodating cavity 11 and faces the camera; wherein, the grounding lug boss 13 is positioned on the inner wall of the front hemisphere, and the grounding lug boss 13 and the front hemisphere are of an integrated structure. The grounding boss 13 and the front hemisphere are integrated, so that the effective connection between the grounding boss 13 and the shell 12 is ensured, the processing is convenient, and the production cost is reduced. Connecting the antenna feed 30 to the front hemisphere to ground provides a better ground for conducting interfering signals through the housing structure 10 to the ground.

In particular, the camera also includes a metal protective layer that covers the outer surface of the outer copper mesh 32 at the denuded zone 331. By wrapping the outer surface of the outer copper mesh 32 in the exposed area 331 with the metal protective layer, the metal protective layer can protect the outer copper mesh, prolong the service life and ensure that an interference source can smoothly reach the outer copper mesh. Specifically, the metal protective layer is solder.

As shown in fig. 1 and 2, the housing structure 10 includes a housing 12, the housing 12 has a receiving cavity 11, two opposite sides of the housing 12 respectively have a first wire routing area and a second wire routing area, the camera further includes a plurality of cables, one end of each cable is located in the receiving cavity 11, each cable passes through a sidewall of the housing 12 and enters the second wire routing area, and the antenna feeder 30 passes through a sidewall of the housing 12 and enters the first wire routing area. By adopting the arrangement mode, each cable passes through the side wall of the shell 12 to enter the second wiring area, and the antenna feeder 30 passes through the side wall of the shell 12 to enter the first wiring area, so that the cable and the antenna feeder 30 can be prevented from being wound, the influence of interference signals generated by the cables on the antenna feeder 30 is reduced, and the wireless receiving function of the camera is improved.

The camera is a spherical camera, and further comprises an outer cover 61, a first lug 62 and a second lug 63, wherein the first lug 62 and the second lug 63 are arranged on the outer cover 61 at intervals, two opposite sides of the shell 12 are hinged with the first lug 62 and the second lug 63 respectively, the first wiring area is located in the first lug 62, and the second wiring area is located in the second lug 63. By hinging the opposite sides of the housing 12 to the first and

second lugs

62, 63, respectively, the housing structure 10 can be rotated, which improves the versatility of the camera.

Specifically, the camera further includes a movement 64, a mounting bracket 65, and a bearing plate 66 disposed in the accommodating chamber 11, the mounting bracket 65 is connected to the inner wall of the housing structure 10, the movement 64 is mounted on the mounting bracket 65, the bearing plate 66 is connected to the movement 64, and the communication module 20 is mounted on the bearing plate 66. A mounting frame 65 is provided for fixing the movement 64 in the accommodation chamber 11; a carrier plate 66 is provided for connecting the telecommunications module 20.

Optionally, the housing 12 has a first wire hole and a second wire hole, the first wire hole communicating with the first wire area, the second wire hole communicating with the second wire area.

Optionally, the housing structure 10 further includes a plurality of positioning pillars spaced around the first wire-passing hole and the second wire-passing hole, and the positioning pillars and the casing 12 are an integral structure.

The scheme has the advantages that:

1. compared with a method for grounding conductive materials such as copper foil, the scheme effectively solves the problem of signal interference by using a reliable structure based on the principle of blocking an interference source propagation path, and is more suitable for a ball machine (namely a spherical camera) which is a relatively complex structure.

2. The cable and the antenna feeder are respectively arranged on two sides, so that the interference source and the interfered equipment are intentionally separated, and the possibility that the interference source interferes with the interfered equipment is reduced.

3. The reasonable selection of the position of the grounding boss selects a complete grounding position (front hemisphere) instead of a single-point or incomplete grounding position (mounting bracket position), and effective grounding is realized.

4. Adopt to compress tightly the piece and press outer copper mesh on the ground connection boss for the antenna feeder can reliably be grounded through shell structure.

5. Through the arrangement mode, the low-frequency wireless receiving performance (TIS-89.31dBm @ B5, -90.06dBm @ B8, -82.13dBm @ B20) of the whole machine is improved by about 10dB compared with the ungrounded state of a copper mesh outside an antenna feeder, and the low-frequency interference is effectively solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A camera, comprising:

a housing structure (10), the housing structure (10) having a receiving cavity (11), the housing structure (10) being made of an electrically conductive material;

a communication module (20) disposed within the housing cavity (11);

the antenna feeder (30), one end of the antenna feeder (30) is connected with the communication module (20), the antenna feeder (30) comprises an inner core (31), an outer copper net (32) and an outer skin (33) which are sequentially arranged from inside to outside, wherein the outer skin (33) is provided with an exposed area (331), and the exposed area (331) exposes the outer copper net (32);

the limiting part (40), the limiting part (40) is connected with the shell structure (10), and the limiting part (40) presses the outer copper mesh (32) positioned in the exposed area (331) on the shell structure (10);

the shell structure (10) comprises a shell (12) and a grounding boss (13), the shell (12) is provided with the accommodating cavity (11), the grounding boss (13) is arranged on the inner wall of the shell (12), the limiting part (40) is connected with the grounding boss (13), and the outer copper mesh (32) located in the exposed area (331) is pressed on the grounding boss (13) by the limiting part (40);

the limiting part (40) comprises a pressing piece (42) and a fastening piece (43), the fastening piece (43) connects the pressing piece (42) to the grounding boss (13), and the pressing piece (42) presses the outer copper net (32).

2. The camera according to claim 1, wherein the grounding lug (13) has a positioning end face (131), the housing structure (10) further comprises a limiting post (14) disposed on the positioning end face (131), the outer copper mesh (32) is pressed on the positioning end face (131) by the limiting portion (40), and at least one limiting post (14) is disposed on both sides of the outer copper mesh (32).

3. The camera according to claim 2, wherein the limiting portion (40) has an avoiding hole (41), and an end of the limiting post (14) away from the positioning end surface (131) penetrates into the avoiding hole (41).

4. The camera according to claim 3, wherein the avoiding holes (41) are waist-shaped holes, the number of the avoiding holes (41) is at least two, an included angle is formed between the two adjacent avoiding holes (41) in the length direction, two limiting columns (14) penetrate into each avoiding hole (41), and each limiting column (14) penetrates into each avoiding hole (41) and is in limit fit with two sides of the outer copper net (32) respectively.

5. The camera according to claim 1, characterized in that said housing (12) is spherical, said housing (12) comprising a front hemisphere and a rear hemisphere connected to each other, said front hemisphere having a camera opening, said camera further comprising a camera head located inside said housing cavity (11) and facing said camera opening; the grounding boss (13) is positioned on the inner wall of the front hemisphere, and the grounding boss (13) and the front hemisphere are of an integrated structure.

6. The camera of claim 1, further comprising a metal protective layer covering an outer surface of the outer copper mesh (32) at the denuded zone (331).

7. The camera of claim 1, wherein the housing structure (10) includes a housing (12), the housing (12) having the receiving cavity (11), the housing (12) having a first routing area and a second routing area on opposite outer sides thereof, the camera further including a plurality of cables, each cable having one end thereof located within the receiving cavity (11), each cable passing through a sidewall of the housing (12) into the second routing area, the antenna feed line (30) passing through a sidewall of the housing (12) into the first routing area.

8. The camera according to claim 7, wherein the camera is a dome camera, the camera further comprises an outer cover (61), a first lug (62) and a second lug (63), the first lug (62) and the second lug (63) are arranged on the outer cover (61) at intervals, two opposite sides of the housing (12) are respectively hinged to the first lug (62) and the second lug (63), the first wiring area is located in the first lug (62), and the second wiring area is located in the second lug (63).

9. The camera according to claim 1, characterized in that it further comprises a movement (64) arranged inside the housing cavity (11), a mounting frame (65) and a bearing plate (66), the mounting frame (65) being connected to an inner wall of the housing structure (10), the movement (64) being mounted on the mounting frame (65), the bearing plate (66) being connected to the movement (64), the communication module (20) being mounted on the bearing plate (66).