Camera module capable of preventing signal interference

Abstract

The utility model relates to the technical field of electronic equipment, in particular to a camera module capable of preventing signal interference, which comprises a PCB (printed circuit board) and a fixed base, and is characterized in that the fixed base is positioned above the PCB and is fixedly connected with the PCB, a lens component is arranged on the fixed base, a sensing component is arranged on the surface of the PCB, and the lens component is positioned above the PCB. The lens assembly comprises a lens body, a wide angle and a protective cover, through cooperative use of the above structures, signal attenuation is reduced, a USB interface is close to the edge, connection with external equipment is facilitated, the integrity of USB signals is ensured through reasonable wiring layout, and for high-speed signals such as a camera image data transmission line, the data transmission efficiency is improved. A differential wiring mode is adopted, and the wiring length and spacing are strictly controlled so as to match impedance, reduce signal reflection, thicken power supply wiring, reduce line resistance, ensure the stability of power supply and reduce the power consumption of the camera.

Description

TECHNICAL FIELD

[0001] The utility relates to the technical field of electronic equipment, in particular to a camera module capable of preventing signal interference. BACKGROUND

[0002] The USB camera is a camera device connected to a computer or a mobile device through a USB interface, which can convert optical signals into digital signals and transmit them in real time. In the current digital era, the USB camera is widely used in video conferencing, security monitoring, smart home and many other fields. However, the existing USB camera has some problems in the aspects of PCB structure and circuit design.

[0003] The PCB layout of some cameras is unreasonable, which leads to serious signal interference and unstable image quality, and phenomena such as noise and stripes. In addition, the imperfect circuit design results in low power management efficiency and large camera power consumption, which affects the device's endurance time. Moreover, when connected to a computer, a mobile phone or other USB interface devices, compatibility problems occur, such as unstable connection and inability to identify.

[0004] Therefore, the utility discloses a camera module capable of preventing signal interference. SUMMARY

[0005] To solve the technical problems proposed in the background art, the utility provides a camera module capable of preventing signal interference, which comprises a PCB board and a fixed base, characterized in that: the fixed base is located above the PCB board and is fixedly connected with the PCB board, a lens assembly is arranged on the fixed base, and a sensing assembly is arranged on the surface of the PCB board.

[0006] As a further improvement of the technical solution, the lens assembly comprises a lens body, a wide-angle lens and a protective cover, the wide-angle lens is located at the upper part of the lens body and is fixedly connected with the lens body, and the protective cover is located at the upper part of the wide-angle lens and is fixedly connected with the wide-angle lens.

[0007] As a further improvement of the technical solution, the sensing assembly comprises a digital signal processor and a memory chip, the digital signal processor is fixedly connected with the edge on one side of the upper surface of the PCB board, and the memory chip is fixedly connected with the edge on the other side of the lower surface of the PCB board.

[0008] As a further improvement of the technical solution, a connector plug is fixedly connected with the front edge on one side of the lower part of the PCB board, and a fixing groove is arranged on each side of the surface of the PCB board.

[0009] As a further improvement of the technical solution, the middle end of the lower part of the fixed base is fixedly connected with the upper part of the PCB board.

[0010] Compared with the prior art, the utility has the beneficial effects of:

[0011] The camera module of the application reduces signal attenuation by the cooperation of the above-mentioned structures, the USB interface is close to the edge, facilitating connection with external devices, and the integrity of the USB signal is ensured by reasonable layout of the wires, the differential wire layout is adopted for high-speed signals such as the camera image data transmission line, and the wire length and spacing are strictly controlled to match the impedance and reduce signal reflection. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the application;

[0013] Figure 2 It is a schematic diagram of the exploded structure of the application;

[0014] Figure 3 It is a schematic diagram of the bottom view of the application;

[0015] Figure 4 It is a schematic diagram of the wide-angle structure of the application.

[0016] The meanings of the various reference numbers in the drawings are as follows:

[0017] 1, PCB; 2, fixed base; 3, lens body; 4, wide-angle; 5, protective cover; 6, digital signal processor; 7, memory chip; 8, connector plug; 9, fixed groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0019] The existing technical problems are that the PCB layout of the split camera is unreasonable, leading to serious signal interference, unstable image quality, and phenomena such as noise and stripes, and that the imperfect circuit design results in low power management efficiency, large camera power consumption, and influence on the device endurance time, in addition, compatibility problems also occur when connecting with USB interface devices such as computers and mobile phones, such as unstable connection and inability to identify.

[0020] Therefore, the application provides a camera module for preventing signal interference, which is shown in Figures 1-4As shown, it includes a PCB board 1 and a fixed base 2 located above the PCB board 1 and fixedly connected with the PCB board 1, a lens assembly is arranged on the fixed base 2, a sensing assembly is arranged on the surface of the PCB board 1, the lens assembly comprises a lens body 3, a wide-angle 4 and a protective cover 5, the wide-angle 4 is located at the upper part of the lens body 3 and is fixedly connected with the lens body 3, the protective cover 5 is located at the upper part of the wide-angle 4 and is fixedly connected with the wide-angle 4, the sensing assembly comprises a digital signal processor 6 and a memory chip 7, the digital signal processor 6 is fixedly connected with the edge of one side of the upper surface of the PCB board 1, the memory chip 7 is fixedly connected with the edge of the other side of the lower surface of the PCB board 1, a connector plug 8 is fixedly connected with one side of the lower part of the PCB board 1, and fixed grooves 9 are respectively arranged on the two sides of the surface of the PCB board 1, and the lower part of the fixed base 2 is fixedly connected with the middle end of the upper part of the PCB board 1.

[0021] Specifically, referring to Figures 1-4 As shown, the PCB board 1 is provided with four layers of lines from top to bottom, the multi-layer wiring increases the wiring space, can reduce the signal interference between the lines, the power supply layer, the ground layer and the signal layer are separated by the four layers of lines, the signal interference of the power supply noise is reduced, the image sensor is placed at the center position of the PCB, and the surrounding relevant signal processing circuit is surrounded, so that the signal transmission path is shortened, the signal attenuation is reduced, the connector plug 8 interface is close to the edge, the connection with the external equipment is facilitated, and the signal integrity of the connector plug 8 is ensured through reasonable wiring layout, the multi-layer wiring design: for high-speed signals such as camera image data transmission lines, a differential wiring mode is adopted, the wiring length and spacing are strictly controlled to match the impedance and reduce signal reflection, the power supply wiring is thickened to reduce the line resistance and ensure the stability of the power supply. At the same time, vias and resistance-capacitance elements are arranged on the key signal lines for filtering and anti-interference, the connector plug 8 is a USB interface in the prior art, a standard USB interface chip is adopted, USB2.0 or higher version protocol is supported to realize high-speed data transmission, an ESD protection diode and a filter capacitor are arranged at the USB interface to prevent electrostatic shock and electromagnetic interference and ensure the reliability of data transmission. At the same time, the USB interface chip is configured through software programming, so that it can adapt to different USB host devices and improve compatibility.

[0022] In summary, the unreasonable PCB layout of the existing part of the camera is effectively solved, the signal interference is serious, the image quality is unstable, and the phenomena such as noise and stripes occur, at the same time, the imperfect circuit design makes the power management efficiency low, the camera power consumption is large, and the equipment endurance time is affected, in addition, when connected with computer, mobile phone and other USB interface equipment, compatibility problems also occur, such as unstable connection, unable to identify and other technical problems.

[0023] Working principle: the PCB board 1 is provided with four layers of lines from top to bottom, the multi-layer wiring increases the wiring space, can reduce the signal interference between each line, the power supply layer, the ground layer and the signal layer are separated through the four layers of lines, the signal interference of the power supply noise on the signal is reduced, the image sensor is placed at the center position of the PCB, the surrounding related signal processing circuit is surrounded, so as to shorten the signal transmission path and reduce the signal attenuation. The connector plug 8 interface is close to the edge, which is convenient for connecting with external equipment, and the signal integrity of the connector plug 8 is ensured through reasonable wiring layout, multi-layer wiring design: for high-speed signals such as camera image data transmission lines, differential wiring mode is adopted, wiring length and spacing are strictly controlled to match impedance and reduce signal reflection, power supply wiring is thickened to reduce line resistance and ensure the stability of power supply. At the same time, vias and resistance-capacitance elements are arranged on the key signal lines for filtering and anti-interference. The connector plug 8 is a USB interface in the prior art, a standard USB interface chip is adopted, USB2.0 or higher version protocol is supported to realize high-speed data transmission, ESD protection diode and filter capacitor are arranged at the USB interface to prevent electrostatic shock and electromagnetic interference and ensure the reliability of data transmission. At the same time, the USB interface chip is configured through software programming, so that it can adapt to different USB host devices and improve compatibility.

[0024] It should be noted that, in the present document, relational terms such as first and second and the like can 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. Moreover, 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A signal interference prevention camera module, comprising a PCB board (1) and a fixed base (2), characterized in that: The fixed base (2) is located above the PCB board (1) and is fixedly connected with the PCB board (1), a lens assembly is arranged on the fixed base (2), and a sensing assembly is arranged on the surface of the PCB board (1).

2. The camera module of claim 1, wherein: The lens assembly comprises a lens body (3), a wide-angle (4) and a protective cover (5), the wide-angle (4) is located at the upper portion of the lens body (3) and is fixedly connected with the lens body (3), and the protective cover (5) is located at the upper portion of the wide-angle (4) and is fixedly connected with the wide-angle (4). 3.The camera module of claim 2, wherein: The sensing assembly comprises a digital signal processor (6) and a memory chip (7), the digital signal processor (6) is fixedly connected with the edge on one side of the upper surface of the PCB board (1), and the memory chip (7) is fixedly connected with the edge on the other side of the lower surface of the PCB board (1).

4. The camera module of claim 3, wherein: A connector plug (8) is fixedly connected to the front edge on one side of the lower portion of the PCB board (1), and fixed grooves (9) are formed on the surfaces of the PCB board (1) on both sides.

5. The anti-signal interference camera module of claim 4, wherein: The lower portion of the fixed base (2) is fixedly connected with the middle end of the upper portion of the PCB board (1).

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