CN221081388U - Video interface circuit of intelligent industrial control board based on mobile platform - Google Patents
Video interface circuit of intelligent industrial control board based on mobile platform Download PDFInfo
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- CN221081388U CN221081388U CN202322733086.6U CN202322733086U CN221081388U CN 221081388 U CN221081388 U CN 221081388U CN 202322733086 U CN202322733086 U CN 202322733086U CN 221081388 U CN221081388 U CN 221081388U
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Abstract
The utility model relates to an intelligent industrial control board, in particular to a video interface circuit of the intelligent industrial control board based on a mobile platform, which comprises: the MSM8953 core module is connected with the following modules and performs centralized control; the video signal conversion module comprises an MIPI-LVDS-to-HDMI circuit; an RS232/RS485 conversion circuit; an Ethernet conversion circuit; the USB expansion circuit comprises a USB3.0 interface, 8 USB2.0 interfaces and a Micro-USB interface; the audio power amplifying circuit and the video interface expanding circuit can enable a mobile platform with low power consumption and operating an Android OS to be used for an embedded industrial control board. The display of the main screen LVDS and MIPI signals is supported, the display of the auxiliary screen LVDS and HDMI signals is supported, and the dual-screen display is supported; up to 3-screen simultaneous display can be supported. The circuit is simple and the cost is low.
Description
Technical Field
The utility model relates to an intelligent industrial control board, in particular to a video interface circuit of the intelligent industrial control board based on a mobile platform.
Background
The industrial control board is a device special for industrial control and data communication thereof, and can realize that the main controller can control the controlled device and collect and store the data uploaded by the controlled device. Along with the development of the internet of things technology, the embedded industrial control board is widely applied to the fields of payment and cashing, self-service vending, intelligent touch screens, face recognition and the like.
The traditional industrial control board generally uses the CPU with the X86 architecture, and has the advantages of strong performance and rich interfaces, and the video interface generally supports MIPI (Mobile Industry Processor Interface), LVDS and HDMI different types of display equipment, but also has the conditions of high power consumption, complex circuit and easy overheat during working.
The mobile platform has the characteristics of low cost, low power consumption, small size, 4G/5G communication function and the like, and is used for an application scene which can meet the requirements of low power consumption, small size and 4G/5G communication in an embedded industrial control board. However, since the mobile terminal generally has only one display screen, the video interface of the mobile platform is single in form, and cannot meet the requirement that the industrial personal computer can support multiple types of display devices.
If the mobile platform is applied to the field of embedded industrial control boards, the problem that the existing video interface of the mobile platform is single needs to be solved.
In view of the above drawbacks, the present technical solution has been specially developed.
Disclosure of utility model
The utility model aims to provide a video interface circuit suitable for a mobile platform industrial control board, which expands MIPIDSI signals output by a mobile platform into MIPI, LVDS, HDMI interfaces and solves the problem of single video interface of the mobile platform.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A video interface circuit based on a mobile platform industrial control board, comprising:
a) A CPU (central processing unit);
b) An MIPI switch for dividing a DSI signal into two paths;
c) An I2S level conversion circuit for connecting the I2S signal of the CPU and converting it into a corresponding level;
d) The MIPI-DSI-LVDS conversion chip is used for receiving one path of DSI signals separated by the MIPI switch and converting the signals into LVDS signals;
e) And the MIPI-DSI conversion HDMI chip is used for receiving the other DSI signal separated by the MIPI switch and converting the signal into an HDMI signal.
Preferably, when connecting the DSI interface, one path is converted into LVDS signals through the MIPI-DSI to LVDS chip and then connected to the LVDS interface, and the other path is directly connected to the DSI interface.
Preferably, the output of the I2S level conversion circuit is connected to the MIPI-DSI-to-HDMI chip, and is used for transmitting the level-converted I2S signal to the MIPI-DSI-to-HDMI chip.
Preferably, the MIPI-DSI to HDMI/LVDS chip is configured to convert input DSI signals into HDMI signals and LVDS signals, respectively, and to connect the converted signals to the HDMI interface and the LVDS interface, respectively.
Preferably, the CPU is set to MSM8953.
The specific principle of the circuit is as follows:
A video interface circuit based on a mobile platform industrial control board comprises a CPU, an MIPI switch, I2S level conversion, an MIPI-DSI (Display Serial Interface) to LVDS (Low-Voltage DIFFERENTIAL SIGNALING) chip and an MIPI-DSI to HDMI (High Definition Multimedia Interface) chip. The MIPI switch divides one path of DSI signal into two paths, wherein one path is connected with the DSI-LVDS chip, then connected with the LVDS interface, and the other path is directly connected with the DSI interface. The I2S signal of the CPU is connected with an I2S level conversion circuit, and the output of the I2S level conversion circuit is connected to the DSI-HDMI chip. The DSI-to-HDMI/LVDS chip converts the input DSI signal into an HDMI signal and an LVDS signal, and connects the converted signals to an HDMI interface and an LVDS interface respectively.
The utility model enables the mobile platform which only supports MIPI interface display to support MIPI, LVDS, DHDMI interface display screen, and can support two screens to display simultaneously and support double-screen different display. The video interface expansion circuit can enable a mobile platform with low power consumption and running Android OS to be used for an embedded industrial control board. The display of the main screen LVDS and MIPI signals is supported, the display of the auxiliary screen LVDS and HDMI signals is supported, and the dual-screen display is supported; up to 3-screen simultaneous display can be supported. The circuit is simple and the cost is low.
Drawings
FIG. 1 is a schematic block diagram of the present utility model;
FIG. 2 is a schematic diagram of a MIPI switch;
FIG. 3 is a schematic diagram of DSI to LVDS;
Fig. 4 is a schematic diagram of DSI-HDMI/LVDS.
Detailed Description
Example 1:
As shown in fig. 1, in a video interface circuit of an intelligent industrial control board based on a mobile platform, an MIPI switch divides one path of DSI signals into two paths, wherein one path of DSI signals is connected with a DSI-to-LVDS chip, then connected with an LVDS interface, and the other path of DSI signals is directly connected with the DSI interface.
The I2S signal of the CPU is connected with an I2S level conversion circuit, and the output of the I2S level conversion circuit is connected to the DSI-HDMI chip.
The DSI-to-HDMI/LVDS chip converts the input DSI signal into an HDMI signal and an LVDS signal, and connects the converted signals to an HDMI interface and an LVDS interface respectively.
Example 2:
As shown in fig. 2, a set of DSI signals (DSI 0) is connected to the MIPI switch, and the switching of the two right sets of signals is controlled by controlling the high/low (on/off) of the SEL pin with the IO port. Under the condition that a switch is on/off, two groups of signals are respectively output A, B, and the group B is directly connected with an MIPI interface; as shown in FIG. 3, the group A converts the DSI signal into the LVDS signal through the DSI-LVDS chip and then connects with the LVDS interface. The industrial control board can be connected with an MIPI interface screen and an LVDS interface screen.
Example 3:
As shown in fig. 4, another set of DSI signals (DSI 1) is connected to the DSI-to-HDMI/LVDS chip. The DSI-to-HDMI/LVDS chip converts the input DSI signal into an HDMI signal and an LVDS signal, and connects the converted signals to an HDMI interface and an LVDS interface respectively. The HDMI signal comprises a video signal and an audio signal, and the I2S level conversion circuit converts the I2S signal output by the CPU into the audio signal of the HDMI interface, so that the output of the audio signal is realized. The industrial control board can be connected with an LVDS interface screen and an HDMI interface screen.
The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. A video interface circuit based on a mobile platform industrial control board, comprising:
a) A CPU (central processing unit);
b) An MIPI switch for dividing a DSI signal into two paths;
c) An I2S level conversion circuit for connecting the I2S signal of the CPU and converting it into a corresponding level;
d) The MIPI-DSI-LVDS conversion chip is used for receiving one path of DSI signals separated by the MIPI switch and converting the signals into LVDS signals;
e) And the MIPI-DSI conversion HDMI chip is used for receiving the other DSI signal separated by the MIPI switch and converting the signal into an HDMI signal.
2. The mobile platform industrial control board-based video interface circuit of claim 1, wherein: when the DSI interface is connected, one path is converted into LVDS signals through the MIPI-DSI to LVDS chip and then connected to the LVDS interface, and the other path is directly connected to the DSI interface.
3. The mobile platform industrial control board-based video interface circuit of claim 1, wherein: the output of the I2S level conversion circuit is connected with the MIPI-DSI-to-HDMI chip and is used for transmitting the I2S signal after level conversion to the MIPI-DSI-to-HDMI chip.
4. The mobile platform industrial control board-based video interface circuit of claim 1, wherein: the MIPI-DSI-HDMI/LVDS chip is used for converting input DSI signals into HDMI signals and LVDS signals respectively, and connecting the converted signals to an HDMI interface and an LVDS interface respectively.
5. The mobile platform industrial control board-based video interface circuit of claim 1, wherein: the CPU is set to MSM8953.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322733086.6U CN221081388U (en) | 2023-10-12 | 2023-10-12 | Video interface circuit of intelligent industrial control board based on mobile platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322733086.6U CN221081388U (en) | 2023-10-12 | 2023-10-12 | Video interface circuit of intelligent industrial control board based on mobile platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221081388U true CN221081388U (en) | 2024-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322733086.6U Active CN221081388U (en) | 2023-10-12 | 2023-10-12 | Video interface circuit of intelligent industrial control board based on mobile platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221081388U (en) |
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2023
- 2023-10-12 CN CN202322733086.6U patent/CN221081388U/en active Active
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