CN217426096U

CN217426096U - Infrared touch PCBa circuit board suitable for integrated camera and microphone of electronic whiteboard

Info

Publication number: CN217426096U
Application number: CN202221486038.0U
Authority: CN
Inventors: 陈宗锋; 刘小建; 王伯贤; 李育奇
Original assignee: Jiajie Technology Fuqing Co ltd
Current assignee: Jiajie Technology Fuqing Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-09-13
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses an infrared touch-control PCBa circuit board of integrated camera and microphone suitable for electronic whiteboard, it includes the PCBA board, the PCBA board is 4 plywoods, infrared touch-control module signal circuit is arranged to the top layer of PCBA board, the middle two-layer of PCBA board is ground plane and power supply layer respectively, camera module and microphone module signal circuit are arranged to the bottom layer of PCB board, the USB power supply and the data channel of camera module and microphone module signal circuit use the USB passageway of infrared touch-control module; a group of control ports are arranged on the PCBA, and the group of control ports comprise a microphone module USB port, a microphone silencing wire port and a camera module USB port; a set of control port corresponds with a set of wire rod and is connected, and the PCBA board passes through a set of wire rod and complete machine mainboard connection. The utility model discloses effectively reduce USB interface passageway quantity and relevant wiring wire rod to the production reduces the equipment process, and improves the product quality, improves the product competitiveness.

Description

Infrared touch PCBa circuit board suitable for integrated camera and microphone of electronic whiteboard

Technical Field

The utility model relates to an whiteboard technical field especially relates to an infrared touch-control PCBa circuit board of integrated camera and microphone suitable for whiteboard.

Background

At present, the intelligent conference education all-in-one machine and the electronic whiteboard all-in-one machine are provided with a camera, a microphone, a touch writing function and the like, the camera and the microphone are basically arranged at the middle position of the sky side of the machine, the touch technology generally adopts capacitance touch and infrared touch technologies at present, the infrared touch technologies are stable and low in cost, the infrared touch technologies are mainly used for touch in the intelligent conference education all-in-one machine and the electronic whiteboard market, the occupation ratio is maintained by more than 90%, and a main chip control board of an infrared touch module is arranged at the position of the ground side of the machine.

The infrared touch module is composed of 3 parts: the main chip control board (IR PCBA main control board) is at the ground side of the machine, the infrared transmitting tubes are at the ground side and the right side of the machine, and the infrared receiving tubes are at the day side and the left side of the machine.

As shown in fig. 1, in the conventional structure, the camera module, the microphone module and the infrared touch module are wired at different positions, so that the number of wires is large, the production and assembly are complex, and the production efficiency is low. The infrared touch control mainboard is placed on the inner ground side of the machine, the data communication and processing between the touch control and the whole machine mainboard are realized by USB wires and UART wires, and the USB wires and the UART wires are arranged in parallel from the inner ground side of the machine to the middle position and then bent by 90 degrees to the whole machine mainboard. The camera module comprises 3 parts: camera lens, photographic film and MCU control panel, camera module are put at the inside sky side of machine, and camera module and complete machine mainboard data communication and processing are connected by the USB wire rod, and the USB wire rod is followed the inside sky side of machine and is followed right marginal position, and the complete machine right side is bent according to the machine edge again, toward the intermediate position, bends 90 degrees to complete machine mainboard again. The microphone module is placed on the inner antenna side of the machine, the microphone module is connected with the whole machine mainboard through a USB wire and a silencing line in data communication and processing, the USB wire and the silencing line are bent to the left side of the whole machine from the antenna side of the machine and then bent to the whole machine mainboard by 90 degrees from the middle position.

Disclosure of Invention

An object of the utility model is to provide an infrared touch-control PCBa circuit board of integrated camera and microphone suitable for whiteboard.

The utility model adopts the technical proposal that:

the infrared touch control PCBa circuit board is suitable for an electronic whiteboard and integrates a camera and a microphone, and comprises a PCBA board, wherein the PCBA board is a 4-layer board, an infrared touch control module signal circuit is arranged on the top layer of the PCBA board, two middle layers of the PCBA board are respectively a ground layer and a power supply layer, a camera module and a microphone module signal circuit are arranged on the bottom layer of the PCBA board, and USB power supply and data channels of the camera module and microphone module signal circuit use USB channels of the infrared touch control module; a group of control ports are arranged on the PCBA, and the group of control ports comprise a microphone module USB port, a microphone silencing wire port and a camera module USB port; a set of control port corresponds with a set of wire rod and is connected, and the PCBA board passes through a set of wire rod and complete machine mainboard connection.

Further, the working frequency ranges of the camera module, the microphone module and the infrared touch module are different.

Further, the working frequency of the camera module is 0-6 MHz; the working frequency of the microphone module is 20-20 KHz; the working frequency of the infrared touch module is 36KHz-38 KHz; the different working frequency bands of the modules will generate mutual interference and affect the performance of the modules.

Further, the set of wires includes a first USB + mute line + a second USB + UART; the first USB corresponds integrated camera and microphone module, and the second USB corresponds infrared touch module.

Furthermore, the microphone module USB port and the camera module USB port in the control port share one group of 14-pin ports, and the microphone module and the camera module are mutually independent in sequence.

The utility model adopts the above technical scheme, can make IR PCBa, the camera module, the CPU that the USB interface passageway of microphone mould three group sharings transmitted to the complete machine mainboard is handled, just can realize the touch-control function through the display, and the image function of making a video recording, the sound control function also can effectively reduce USB interface passageway quantity and relevant wiring wire rod simultaneously to the production reduces the equipment process, and improves the product quality, improves the product competitiveness.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments;

fig. 1 is a schematic diagram of wiring of a camera module, a microphone module and an infrared touch module of a conventional electronic whiteboard;

fig. 2 is a schematic structural diagram of an infrared touch-control PCBa circuit board suitable for an integrated camera and a microphone of an electronic whiteboard;

fig. 3 is a schematic diagram of the wire routing of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

As shown in fig. 2 or 3, the utility model discloses an infrared touch-control PCBa circuit board of integrated camera and microphone suitable for electronic whiteboard, it includes the PCBA board, the PCBA board is 4 plywoods, and infrared touch module signal circuit is arranged at the top layer of PCBA board, and two-layer in the middle of the PCBA board is ground plane and power supply layer respectively, and camera module and microphone module signal circuit are arranged at the bottom layer of PCB board, and the USB power supply and the data channel of camera module and microphone module signal circuit use the USB passageway of infrared touch module; a group of control ports are arranged on the PCBA, and the group of control ports comprise a microphone module USB port, a microphone silencing wire port and a camera module USB port; a set of control port corresponds with a set of wire rod and is connected, and the PCBA board passes through a set of wire rod and complete machine mainboard connection.

The following is a detailed description of the specific principles of the present invention:

original infrared touch-control module, the camera module, microphone module and amortization line need use respectively on to the complete machine mainboard 1 group of wire rod connection, 3 group's wire rods total alternate the line framework through the inside space position of machine and realize connecting, can make the camera module now through PCB wiring layout mode, this 3 group's control end of microphone module and amortization line are integrated on infrared touch-control module (on the reflection tube IR PCB A) board, then have 1 group control port on the transmission tube IR PCBA:

microphone module USB mouth, microphone amortization line port, camera module USB port, through PCB inside wiring overall arrangement, IR PCBA main control board to complete machine mainboard as long as 1 group of wire connection can, this group of wire contain USB + amortization line + USB + UART.

Microphone USU + amortization line + camera merge and walk the line on infrared touch module IR PCBA, because camera module operating frequency is 0-6MHz, microphone module operating frequency is 20-20KHz, infrared touch module operating frequency is 36KHz-38KHz, and each module operating frequency range is different, can produce the phenomenon of mutual interference, influences each module performance, consequently need do when the board wiring following implementation:

original 2 plywoods are changed into 4 plywoods during PCB board wiring, and each module signal is independent mutually, reduces mutual interference, and board wiring distributes and does: the infrared touch module signal circuit is the top layer, the ground and the power supply are 2 layers in the middle, and the camera module and the microphone module signal circuit are the bottom layers.

Through above embodiment, just can realize that touch module main control panel PCB board increases 1 group of wire rods of structure sharing of camera module and microphone module.

The utility model adopts the above technical scheme, can make the camera module through PCB wiring layout mode, this 3 group's control ends of microphone module and amortization line are integrated to infrared touch module (on the reflection tube IR PCB A) boards on, then have 1 group control port on the transmission tube IR PCBA: microphone module USB mouth, microphone amortization line port, camera module USB port, through PCB inside wiring overall arrangement, IR PCBA main control board to complete machine mainboard as long as 1 group of wire connection can, this group of wire contain USB + amortization line + USB + UART. The utility model discloses can make IR PCBa, the camera module, USB interface passageway of three group's sharings of microphone mould transmit CPU and handle, just can realize the touch-control function through the display, the image function of making a video recording, the sound control function also can effectively reduce USB interface passageway quantity and relevant wiring wire rod simultaneously to the production reduces the equipment process, and improves the product quality, improves the product competitiveness.

It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

Claims

1. Infrared touch-control PCBa circuit board suitable for electronic whiteboard's integrated camera and microphone, its characterized in that: the PCB comprises a PCBA board, wherein the PCBA board is a 4-layer board, an infrared touch module signal circuit is arranged on the top layer of the PCBA board, a grounding layer and a power layer are respectively arranged on the middle two layers of the PCBA board, a camera module and a microphone module signal circuit are arranged on the bottom layer of the PCB board, and a USB channel of the infrared touch module is used for USB power supply and data channels of the camera module and the microphone module signal circuit; a group of control ports are arranged on the PCBA, and the group of control ports comprise a microphone module USB port, a microphone silencing wire port and a camera module USB port; a set of control port corresponds with a set of wire rod and is connected, and the PCBA board passes through a set of wire rod and complete machine mainboard connection.

2. The infrared touch PCBa circuit board suitable for the integrated camera and microphone of the electronic whiteboard as recited in claim 1, wherein: the working frequency ranges of the camera module, the microphone module and the infrared touch module are different.

3. The infrared touch PCBa circuit board suitable for the integrated camera and microphone of the electronic whiteboard as recited in claim 1, wherein: the working frequency of the camera module is 0-6 MHz; the working frequency of the microphone module is 20-20 KHz; the working frequency of the infrared touch module is 36KHz-38 KHz.

4. The infrared touch PCBa circuit board suitable for the integrated camera and microphone of the electronic whiteboard as recited in claim 1, wherein: the group of wires comprises a first USB + silencing line + a second USB + UART; the first USB corresponds integrated camera and microphone module, and the second USB corresponds infrared touch module.

5. The infrared touch PCBa circuit board suitable for the integrated camera and microphone of the electronic whiteboard as recited in claim 1, wherein: the microphone module USB port and the camera module USB port in the control port share one group of 14-pin ports, and the microphone module and the camera module are mutually independent in sequence.