CN202098288U - Virtual instrument system based on vehicle bus - Google Patents

Abstract

The utility model discloses a virtual instrument system based on an automobile bus, which is characterized in that it comprises a host system module for data stream processing and a slave system module for external communication and signal processing. The host system module includes a video and graphics processing module, a video compression and decompression module, a video storage module, an audio output module, a display screen data output module, a button control module, and a communication module; the slave system module includes a stepping backlight and a function Indicator light control, sensor signal processing, CAN and LIN modules, and communication modules with the main chip. The video and graphics processing module communicates with each module to organically combine various display states to form an intelligent driving assistance system. The utility model is characterized by intelligence and convenience, which facilitates the driver to understand the vehicle condition to the greatest extent.

Description

A Virtual Instrument System Based on Automobile Bus

technical field

The utility model relates to the technical field of an automobile instrument panel and an automobile bus, in particular to a virtual instrument system based on the automobile bus.

Background technique

At present, the number of car users is increasing day by day, but it also brings many traffic accidents. In order to reduce the occurrence of automobile accidents, automobile manufacturers have to design smart instruments that can measure and display the parameters of each main part of the car to monitor the parameters of each part online, so that the driver can keep abreast of the driving conditions of the car. To reduce the incidence of accidents, the driver can also grasp the vehicle status at any time through these parameters.

The car instrument is the window for the car and the driver to communicate information, and it is also the main part of the car's high-tech technology. At present, the automobile instruments generally used in our country are mechanical and electronic. These instruments are realized by the rotation of the pointer driven by the stepping motor. In addition, in order to display some information on the running status of the car, some indicator lights and some small LCDs are added around. (LCD screen) screen, as the amount of car information to be displayed continues to increase, such as the addition of car navigation, reversing video and other information, these information display systems fixed at a certain position begin to become incompetent; there are intelligent car meters The degree is not high, the display data is not complete enough, the car status information cannot be stored, and it cannot adapt to the addition of car multimedia technology. With the further development of car technology, these problems will need to be continuously improved.

In order to meet the demand of such a large amount of data, it has become a trend to develop a virtual car instrument, which can solve the new display requirements brought about by the increasing amount of car information and the addition of car multimedia technology.

Contents of the invention

The main purpose of the utility model is to solve the deficiencies of the prior art, and propose a virtual instrument system based on the automobile bus.

The virtual instrument system based on the automobile bus of the utility model mainly includes one or more display screens and its background circuit, and is characterized in that it includes a host system module for data stream processing, and a slave system for external communication and signal processing module, a display module; the host system module includes a video and graphics processing module, a video compression and decompression module, a video storage module, an audio output module, a button control module, and a communication module; the slave system module includes a stepping backlight and a function Indicator light control, sensor signal processing, CAN and LIN modules, and a communication module with the main chip; the display module mainly displays the virtual instrument image, and obtains video data from the host system module, and then displays its output to the display device;

The video and graphic processing module communicates with each module, by displaying the blind spots around the car that are not within the visual range, reversing display, car status display, GPS map display, 360-degree seamless splicing panoramic display around the car, and driving records , Drive record video playback function, organize and form an intelligent auxiliary driving system.

The utility model is a virtual instrument system based on the automobile bus, which can completely replace the currently commonly used mechanical and electronic instrument panels, display all information in the virtual instrument, and cannot express mechanical and electronic instrument panels. Or multimedia information that cannot be fully expressed can also be displayed in this virtual instrument system. This information includes information such as speed, rotational speed, oil quantity, water temperature, time, various vehicle status indicators, navigation information, camera video signals, and other multimedia videos.

The video data input from the camera to the virtual instrument system includes blind spot display (display of the area around the car that is not within the field of vision), reversing display (display of the scene behind the car and driving track when reversing), panoramic display (360-degree view of the ground around the car) seamless splicing display) and other auxiliary information. After these camera video data are input to the virtual instrument, they are not directly displayed on the display screen, but are output and displayed after being processed by the system.

This virtual instrument system realizes the functions of driving record (recording driving images and driving related parameters during driving), video playback (playing driving recorded video), and can save the video data and car related parameters during the most recent period of driving.

The video data compression and decompression module mainly compresses the data through the host system, and its compression formats include MPEG-1, MPEG-2, MPEG-4, WMV, H.264, RM/RMVB.

The video storage module includes a storage medium for storing compressed data, and the storage medium includes an SD card, a TF card, a U disk, FLASH, and a hard disk.

The communication module includes USB, SD, UART, SPI and a communication module connected with the slave.

The display mode of the display module includes the data stream output outside the LCD screen display, or the external projection mode and the wireless external transmission display mode.

The beneficial effect that the utility model can reach by adopting above-mentioned technical solution is:

1. Display the car information more vividly, so that the driver can understand the state of the whole car more intuitively; display the car information more comprehensively, so that the driver has enough information as a basis for driving; The video input of the four cameras is intelligently stitched into a picture, so that you can easily see the whole picture of the car when driving in reverse;

2. The use of virtual instrumentation technology makes the upgrade of automobile instrumentation more convenient and faster;

3. This virtual instrument system can output and display the navigation map data on the virtual instrument, so that the car navigation that should have been implemented on another system can be displayed on the virtual instrument in the middle of the instrument panel, which not only saves costs, but also saves The driver looks back and forth at the navigator on the center console during driving, which reduces the possibility of safety accidents;

4. The utility model will store the video data of the most recent period during the operation of the car, providing a reliable basis for traffic accidents;

5. The utility model will install a dead-angle camera on the car, and display the camera input on the screen in the middle of the instrument panel, which greatly increases the driver's field of vision and reduces the possibility of accidents. the

Description of drawings:

Fig. 1 is a structural block diagram of the utility model system.

Detailed ways

As shown in Figure 1, the virtual instrument system based on the automobile bus mainly includes a host system module mainly processing data streaming media, a slave system module mainly processing external communication and signal processing, and a display module processing video display. The host system module includes a video and graphics processing module, a video compression and decompression module, a video storage module, an audio output module, a button control module, and a communication module; Processing, CAN and LIN modules, and a communication module with the main chip; the display module mainly displays the image of the virtual instrument, obtains video data from the host system module, and then displays its output on the display device.

As shown in Figure 1, the host system module is mainly responsible for the processing of multimedia data. It can receive navigation data, camera data, and vehicle body information sent by the slave system module, and process these information to form the display interface of the virtual instrument, and then Send it to the display module for display; at the same time, the host system module will also save relevant video data and car-related parameters to the video data storage module (these data will become a credential when necessary); according to the body data sent by the slave system, the host The system module will also output some prompt sounds to the power amplifier.

As shown in Figure 1, the slave system module is mainly responsible for external communication and signal processing, including data exchange with vehicle buses (CAN, LIN, FlexRay, etc.), acquisition of sensor data, processing user key information and other external information, etc. The slave system module is usually powered continuously, and it is in a sleep state when the car is not started, and the power consumption is extremely low.

As shown in Figure 1, the display module is responsible for displaying the video data sent by the host system module. The display method is not fixed, it can be LCD screen (liquid crystal screen) display, external projection or output video data in the form of video stream.

When in use, after the car is started, the slave system in the sleep state will be awakened, and then the host system module will be controlled to start, the host system module will receive and process the data sent by the slave system module, and start to display the virtual instrument, because the entire instrument is in the It is displayed on the display screen, so in addition to displaying traditional instrument data, the virtual instrument can also display multimedia information such as navigation map information, dead-spot video information, and panoramic reversing video information under the condition that the necessary body information is displayed. The display can be pre-designed by the program, or triggered by the user through the menu. The display mode of the information can be designed arbitrarily, for example, the display of speed and rotating speed can be displayed in a digital mode, or in the form of a virtual pointer instrument, or in any other mode as long as it is realized on the display screen. After the car is started, the video storage function is also activated. The system will store the video data of the latest period (the length of time is determined by the size of the storage device), and the video beyond the time will be deleted. The video avoids being deleted by the system.

After the car is turned off, the display module and the host system module will be powered off, and the slave system module will return to the sleep state. The slave module in the sleep state can also be woken up in some special cases, and it will process some programmed commands at this time.

There are various ways to display vehicle information in this virtual instrument system, which is basically unlimited. Therefore, on the virtual instrument, vehicle information can be displayed in a more vivid and easy-to-understand way, such as some animation prompt functions, etc. At the same time, when these display methods need to be changed, that is to say, when the display interface is to be replaced, only the software needs to be upgraded, and the hardware can remain unchanged. These advantages cannot be realized by the original mechanical and electronic instruments.

What is described above is only the preferred embodiment of the present utility model, and it should be pointed out that for those skilled in the art, without departing from the inventive concept of the present utility model, some deformations and improvements can also be made, all of which belong to Protection scope of the present utility model.

Claims (1)

1. A virtual instrument system based on automobile bus is characterized in that it includes a host system module for data stream processing, a slave system module for external communication and signal processing, and a display module; said host system module includes video and graphics processing module, video compression and decompression module, video storage module, audio output module, button control module, communication module; the slave system module includes stepping backlight and function indicator control, sensor signal processing, CAN and LIN modules, And a communication module with the main chip; the display module mainly displays the virtual instrument image, and obtains video data from the host system module, and then displays its output to the display device; The video and graphic processing module communicates with each module, by displaying the blind spots around the car that are not within the visual range, reversing display, car status display, GPS map display, 360-degree seamless splicing panoramic display around the car, and driving records , Drive record video playback function, organize and form an intelligent auxiliary driving system. 2. The virtual instrument system based on the automobile bus according to claim 1, wherein the video storage module includes a storage medium for storing the compressed data, and the storage medium includes an SD card, a TF card, a U disk, FLASH, hard disk. 3. The vehicle bus-based virtual instrument system according to claim 1, wherein the communication module includes USB, SD, UART, SPI and a communication module connected with the slave. 4. The virtual instrument system based on the automobile bus according to claim 1, wherein the display mode of the display module includes the data stream output outside the LCD screen display, or the external projection mode and the wireless external transmission display mode .

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