CN101704353A - Vehicle-mounted multifunctional device and method for making embedded operating system thereof - Google Patents
Vehicle-mounted multifunctional device and method for making embedded operating system thereof Download PDFInfo
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Abstract
The invention relates to a vehicle-mounted multifunctional device and a method for making an embedded operating system thereof. The invention designs a vehicle-mounted recreational and reversing monitoring multifunctional information system. The vehicle-mounted multifunctional device comprises a video-audio information receiving unit, a camera shooting monitoring unit, a microprocessing unit and a display control unit; and in the method, the microprocessing unit and a computer are used for building the embedded operating system through programs and programming the embedded operating system on a flash memory of the microprocessing unit. The invention simultaneously has the functions of video-audio recreation and real-time video monitoring on images behind the vehicle, the operation is realized through a touch screen; the operating mode is simple, convenient and visual; the functions and operations to be finished can be clearly and directly displayed, thus increasing simplicity and comfort of the operation; and the invention can be widely applied to various vehicles, especially applicable to passenger cars and small cars, thus being an ideal device for guaranteeing traveling safety and recreation enjoyment.
Description
Technical field
The invention belongs to the inter-vehicle information system technical field, be specifically related to the multifunctional information system of car entertainment and Monitor for reverse.
Background technology
Along with improving constantly of development and national economy and living standards of the people, automobile is as the transportation means and the vehicle, Occupation coefficient constantly increases, and people also improve constantly the requirement of automobile, both required in the crowded day by day travels down and the safety of reversing, effectively avoid accident to take place, requiring again has abundant audio-visual seeing and hearing enjoyment in uninteresting driving process.Simultaneously, along with the continuous development of automotive technology and information techenology, people strengthen day by day to the multi-functional demand of automobile, and therefore developing the Vehicular multifunctional information system has significance.
Existing vehicle-mounted multifunctional device and operating system thereof, as the patent No. is " vehicle-mounted multifunctional display device " patent of ZL200620033582.4, disclosed read out instrument is made up of telltale, master cock, disc player and camera, one end of telltale links to each other with power supply by power lead, the other end links to each other with an end of master cock by data line, the other end of master cock is connected by the data output end of data line with video disc player and camera respectively, landform, situation after the driver and conductor selects to see the TV of video disc storage or monitors car by master cock.The major defect of this device is: can only select one after 1. seeing TV or monitoring car, can not realize two kinds of functions of audio-visual broadcast and Monitor for reverse simultaneously.2. audio-visual broadcast can only be play the audio and video information of storing on the video disc, and need dispose disc box on vehicle and need carry a large amount of video discs, and the audio-visual video disc of long-time on the other hand broadcast can cause the video disc wearing and tearing and dial the serious consequence of bad movement.And for example the patent No. is " Vehicular multifunctional audio and video player " patent of ZL200620137205.5, and disclosed player comprises: be connected audiovisual terminals in the data processing unit that obtains audio frequency, coding video data and handle, the butt joint car with external multimedia equipment and export the data processing unit of play multimedia audio/video file.The major defect of this player is: 1. can obtain audio/video file from computer network and movable storage device, satisfy the audio-visual audio-visual demand of people, but can not monitor behind the car situation and can not determine traffic safety.2. need to cooperate multimedia equipment to use, loaded down with trivial details like this connection has tied up formerly has living space and has increased equipment cost.
Summary of the invention
The objective of the invention is weak point, a kind of vehicle-mounted multifunctional device and embedded OS thereof are provided at existing vehicle-mounted multifunctional device and operating system thereof.Have audio-visual amusement and video monitor dual-use function, and utilize touch-screen to realize succinct man-machine interaction, compact hardware design has been saved advantages such as interior space.
Realize the technical scheme of the object of the invention: a kind of vehicle-mounted multifunctional device, comprise audio and video information receiving element and shoot and monitor unit and indicative control unit, it is characterized in that microprocessing unit in addition.Its audio and video information is accepted the unit, for the storage equipment that has USB (USB interface) links to each other with microprocessing unit by system peripheral bus (APB BUS) with intelligent memory card (SD card), common audio-video document is copied in the flash memory (FLASH) of microprocessing unit.Its shoot and monitor unit, for being arranged at the camera that has USB (USB interface) at automobile rear, in order to monitor the scene at automobile rear, so that guarantee the driving safety and the reversing safety of automobile, the camera that has USB interface sees through system bus (APB BUS) and links to each other with microprocessing unit, with information real-time be transferred to microprocessing unit. its indicative control unit, form by liquid crystal display that has LCD Interface and the touch-screen that has touch screen interface, and link to each other with microprocessing unit by system bus (AHB BUS) respectively, audio/video information and operation and control interface are outputed on the liquid crystal display, and be transferred to microprocessing unit from the control signal that touch-screen obtains, realize succinct man-machine interaction.Its microprocessing unit is mainly by little process chip, flash memory (FLSAH memory device), Synchronous Dynamic Random Access Memory (SDRAM memory device), USB concentrator (usb hub), intelligent memory card interface (SD interface), debugging interface (jtag interface), LCD Interface and touch screen interface, and USB storage and USB utilizing camera interface formation.Little process chip is connected with FLASH memory device, SDRAM memory device, LCD Interface, touch screen interface, SD card, JTAG debugging interface and usb hub respectively by system bus (AHB BUS), usb hub is by system peripheral bus (APB BUS), and USB storage is connected with the USB utilizing camera interface respectively.Wherein flash memory (FLASH) and Synchronous Dynamic Random Access Memory (SDRAM) are mainly finished the access of embedded OS and required audio/video file, exterior USB storage and camera are by USB interface and be connected on the usb hub and realize and the communicating by letter of little process chip, intelligent memory card interface, LCD Interface, touch screen interface and debugging interface for intelligent memory card, liquid crystal display, touch-screen, reach the emulation fever writes and provide a kind of mode with being connected of little process chip.
A kind of method for making embedded operating system of vehicle-mounted multifunctional device utilizes the microprocessing unit and the computing machine of apparatus of the present invention, sets up embedded OS and programming on the flash memory of microprocessing unit by program, and its concrete grammar step is as follows:
(1) makes up the embedded operation platform
1. set up the embedded cross development environment
Personal Computer (PC) is linked to each other with microprocessing unit in the vehicle-mounted multifunctional device by network service and serial communication, by the corresponding cross-compiler of network download and install.Hyper terminal above the configuration Personal Computer (PC) is compiled in the effect that microprocessing unit is carried out to be implemented on the Personal Computer (PC).
2. set up preamble (BootLoader)
After finishing in (1)-1. step, download the preamble (BootLoader) of open source code, transplant modification according to the chip of oneself from network.Because the chip that the present invention adopts does not have built-in preamble, now only need write the programming program, and by on the FLASH of debugging interface (JTAG) emulator programming in the microprocessing unit.
3. transplant profit and receive Coase (Linux) kernel
(1)-2. the step finish after, the kernel that the present invention adopts is the kernel at the ARM-LINUX operating system of the little process chip of ARM, adds the drive program of touch-screen, liquid crystal display (LCD), USB specific hardware such as (USB) after the download again.
4. create the exploitation root file system
After finishing in (1)-3. step, download root file system tools (BUSYBOX) from the website, and carry out function with it and reduce, produce a root file system the most basic.After superincumbent cutting, modification are finished, need serviceable tool to produce the programming image file.
5. create Zhai Fusi (Yaffs) file system
After finishing in (1)-4. step, the source code of Yaffs is downloaded in the FLASH disk partition of setting up application program to the website, and sets up corresponding catalogue in kernel the source code of its download is copied under its catalogue.The compiling kernel also downloads to kernel among the FLASH of microprocessing unit.So far the platform of a basic embedded OS has just been set up.
(2) set up built-in application program
1. set up the playing program of audio frequency and video.
Because Qt/E is the c++ language tool kit for graphical user interface on the embedded device and application and development formulation, be to be based on the basis in Qt/E storehouse for midget plant provides the application framework of graphical user interface and window system .Qtopia specially, specially at the mobile computing device of operation built-in Linux and a cover application bag and the research and development storehouse of the open source code that handheld device is researched and developed, the interface grace. the Qtopia that native system adopts not only provides a close friend's graphical interfaces, for the developer, also for the terminal user provides a cover core application, as calendar, media player, application programs such as Photo Browser.
After (1) step finished, the foundation of Qt/E development environment was to download Qt/E related resource bag from the Internet, and Qt/E related resource bag is installed to set up the development environment of Qt/E, downloads the Qtopia installation kit also is installed, and is used to provide the graphical interfaces platform of handheld device.Be compiled in the Qtopia that moves on the ARM platform, the embedded graphic user interface of such interface grace has just been finished.
Itself is integrated with audio/video player Qtopia, audio-video document is put into to compile under the Qtopia catalogue of finishing get final product playing audio-video document.
2. set up visual reversing application program
(2)-1. step was set up visual reversing application program by program after finishing, in order to realize the image real-time acquisition function.Compile visual reversing program and generate executable file by cross compilation environment, and add it to embedded file system Yaffs to reach the effect that in Qtopia, shows.
(3) debugging, integrated embedded operating system
(2) step finish after, visit the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the read-out of Personal Computer (PC) machine, through obtaining moving normal program after the debugging compiling repeatedly, by fever writes kernel, root file system, application program programming are arrived on the flash memory (FLASH) of microprocessing unit at last.
After the present invention adopts technique scheme, mainly contain following effect:
1, the present invention can be good at realizing audio-visual amusement function, and can be on read-out the video scene at real-time display automobile rear.Be connected to apparatus of the present invention by general-duty USB (USB) interface device and intelligent memory card (SD), can very simply copy the audio-video document that oneself needs to apparatus of the present invention.Simultaneously can observe the sight at automobile rear very easily with the form of image by the icon display car back spectacle on the touch display screen.
2, the present invention operates by touch-screen, succinct, convenient, operation mode intuitively, for the function that will finish and operate clear, display intuitively, increased the simplification and the traveling comfort of operation.
3, need enrich when upgrading when the functions such as audio-visual amusement of system, not need to do too big change substantially and only need add corresponding driving program and application program and get final product.Because what we adopted is the (SuSE) Linux OS of increasing income, can both obtain coded representation clearly for the concrete link of developing, make things convenient for subsequent development and perfect, satisfy demand very easily to audio-visual entertainment information.
The present invention can be widely used in the various automobiles, is specially adapted in the manned passenger vehicle and small passenger car.It is the ideal device that guarantees that traffic safety and amusement are enjoyed.
Description of drawings
The structural principle scheme drawing of Fig. 1 apparatus of the present invention;
The principle schematic of the microprocessing unit module of Fig. 2 apparatus of the present invention;
The program flow chart of Fig. 3 the inventive method.
The specific embodiment
Below in conjunction with the specific embodiment, further specify the present invention.
As shown in Figure 1, a kind of vehicle-mounted multifunctional device is made up of audio and video information receiving element, shoot and monitor unit, microprocessor and indicative control unit.Its audio and video information is accepted the unit, and the USB interface that will have the USB flash disk access microprocessing unit of USB interface is realized obtaining of audio/video file.Its shoot and monitor unit, for being set up in the camera at automobile rear, in order to monitor the scene at automobile rear, so that guarantee the driving safety and the reversing safety of automobile, the camera that has USB interface sees through system bus (APB BUS) and links to each other with microprocessing unit, with information real-time be transferred to microprocessing unit.Its indicative control unit is made up of liquid crystal display and touch-screen, because liquid crystal display and touch-screen are stacked together one to one, plays so can carry out film by the icon that touches the film broadcast.Microprocessing unit, by model is little process chip of ARM S3C2410, flash memory (FLSAH memory device), Synchronous Dynamic Random Access Memory (SDRAM memory device), USB concentrator (usb hub), intelligent memory card interface (SD interface), debugging interface (jtag interface), LCD Interface and touch screen interface, and USB storage and USB utilizing camera interface formation.Little process chip is connected with FLASH memory device, SDRAM memory device, LCD Interface, touch screen interface, SD card, JTAG debugging interface and usb hub respectively by system bus (AHB BUS), usb hub is by system peripheral bus (APB BUS), and USB storage is connected with the USB utilizing camera interface respectively.Wherein flash memory (FLASH) and Synchronous Dynamic Random Access Memory (SDRAM) are mainly finished the access of embedded OS and required audio/video file, exterior USB storage and camera are by USB interface and be connected on the usb hub and realize and the communicating by letter of little process chip, intelligent memory card interface, LCD Interface, touch screen interface and debugging interface for intelligent memory card, liquid crystal display, touch-screen, reach the emulation fever writes and provide a kind of mode with being connected of little process chip.
A kind of method for making embedded operating system of vehicle-mounted multifunctional device utilizes the microprocessing unit and the computing machine of apparatus of the present invention, sets up embedded OS and programming on the flash memory of microprocessing unit by program, and its concrete grammar step is as follows:
(1) makes up the embedded operation platform
1. set up the embedded cross development environment
The Personal Computer (PC) that small red cap operating system (a kind of (SuSE) Linux OS version) will be installed links to each other with microprocessing unit by network service and serial communication, and (arm-linux-gcc) installs by the network download cross-compiler.Configuration exploitation main frame, the hyper terminal (MINICOM) of configuration Linux, general parameters is a baud rate 115200,8 of data bit, stop bit 1, no parity, the software and hardware control flows is made as nothing.The effect of MINICOM software is the instrument as the monitoring device of debugging embedded microprocessing unit information output and keyboard input.
2. set up preamble (BootLoader)
After finishing in (1)-1. step, set up, debugging guiding reprinting program and by jtag interface with its programming to microprocessing unit.Set up preamble BootLoader, download BootLoader from network, that the present invention selects is UBOOT, transplants modification according to own concrete chip.Because the chip that the present invention adopts does not have built-in preamble, need write the programming program of programming FLASH to the microprocessing unit, will compiled preamble programming arrive the FLASH chip of microprocessing unit by the simple and easy emulator of debugging interface (JT AG).
3. transplant the kernel that model is Linux2.6
After finishing in (1)-2. step, transplant linux kernel, the present invention adopts is the drive program of specific hardware such as annex solution crystal display screen, touch-screen, USB again after downloading at the kernel of the ARM-LINUX operating system of used CPU.
4. create the exploitation root file system
After finishing in (1)-3. step, download BUSYBOX from the website, and use BUSYBOX software to carry out function and reduce, produce a root file system the most basic.After superincumbent cutting, modification are finished, need serviceable tool mkcramfs to produce the programming image file.
5. create Zhai Fusi (Yaffs) file system
After finishing in (1)-4. step, the source code of Yaffs is downloaded in the FLASH disk partition of setting up application program to the website, and sets up corresponding catalogue in kernel the source code of its download is copied under its catalogue.The compiling kernel also downloads to kernel among the FLASH of microprocessing unit.So far the platform of a basic embedded OS has just been set up.
(2) set up built-in application program
1. set up the playing program of audio frequency and video.
Because Qt/E is the c++ language tool kit for graphical user interface on the embedded device and application and development formulation, be application framework and the window system that graphical user interface is provided for midget plant specially.Qtopia is based on the basis in Qt/E storehouse, specially at the mobile computing device of operation built-in Linux and a cover application bag and the research and development storehouse of the open source code that handheld device is researched and developed, interface grace.The Qtopia that native system adopts not only provides a close friend's graphical interfaces, for the developer, also for the terminal user provides a cover core application, as application programs such as calendar, media player, Photo Browsers.
After (1) step finished, the foundation of Qt/E development environment was to download Qt/E related resource bag from the Internet, and Qt/E related resource bag is installed to set up the development environment of Qt/E, downloads the Qtopia installation kit also is installed, and is used to provide the graphical interfaces platform of handheld device.Be compiled in the Qtopia that moves on the ARM platform, the embedded graphic user interface of such interface grace has just been finished.
Itself is integrated with audio/video player Qtopia, audio-video document is put into to compile under the Qtopia catalogue of finishing get final product playing audio-video document.
2. set up visual reversing application program
(2)-1. step was set up visual reversing application program by program after finishing, in order to realize the image real-time acquisition function.Compile visual reversing program and generate executable file by cross compilation environment, and add it to embedded file system Yaffs to reach the effect that in Qtopia, shows.
(3) debugging, integrated embedded operating system
(2) step finish after, visit the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the read-out of Personal Computer (PC) machine, through obtaining moving normal program after the debugging compiling repeatedly, by fever writes kernel, root file system, application program programming are arrived on the flash memory (FLASH) of microprocessing unit at last, the exploitation of total system has just been finished like this.
Claims (2)
1. vehicle-mounted multifunctional device, comprise audio and video information receiving element and shoot and monitor unit and indicative control unit, it is characterized in that microprocessing unit in addition, its audio and video information is accepted the unit, for the storage equipment that has USB links to each other with microprocessing unit by system peripheral bus with intelligent memory card, its shoot and monitor unit, for being arranged at the camera that has USB at automobile rear, link to each other with microprocessing unit by system bus, with information real-time be transferred to microprocessing unit, its indicative control unit, form by liquid crystal display that has LCD Interface and the touch-screen that has touch screen interface, and link to each other with microprocessing unit by system bus respectively, its microprocessing unit is mainly by little process chip, flash memory, Synchronous Dynamic Random Access Memory, the USB concentrator, the intelligent memory card interface, debugging interface, LCD Interface and touch screen interface, and USB storage and USB utilizing camera interface formation, little process chip by system bus respectively with the FLASH memory device, the SDRAM memory device, LCD Interface, touch screen interface, the SD card, JTAG debugging interface and usb hub connect, usb hub is by system peripheral bus, and USB storage is connected with the USB utilizing camera interface respectively.
2. the method for making embedded operating system of a vehicle-mounted multifunctional device, utilize the microprocessing unit and the computing machine of apparatus of the present invention, set up embedded OS and programming on the flash memory of microprocessing unit by program, its concrete grammar step is as follows:
(1) makes up the embedded operation platform
1. set up the embedded cross development environment
Personal Computer is linked to each other with microprocessing unit in the vehicle-mounted multifunctional device by network service and serial communication, by the corresponding cross-compiler of network download and install, hyper terminal above the configuration Personal Computer, general parameters is a baud rate 115200;
2. set up preamble
(1)-1. the step finish after, download the preamble of open source code from network, chip according to oneself is transplanted modification, because the chip that the present invention adopts does not have built-in preamble, now only need write the programming program, and by on the FLASH of debugging interface emulator programming in the microprocessing unit;
3. transplant profit and receive the Coase kernel
After finishing in (1)-2. step, the kernel that the present invention adopts is the kernel at the ARM-LINUX operating system of the little process chip of ARM, adds the drive program of touch-screen, liquid crystal display and USB hardware after the download again;
4. create the exploitation root file system
After finishing in (1)-3. step, download the root file system tools from the website, and carry out function with it and reduce, superincumbent cutting, revise finish after, need serviceable tool to produce programming image file;
5. create Zhai and lie prostrate polite system
(1)-4. the step finish after, set up the FLASH disk partition of application program, download the source code of Yaffs to the website, and set up corresponding catalogue in kernel the source code of its download is copied under its catalogue, the compiling kernel also downloads to kernel among the FLASH of microprocessing unit;
(2) set up built-in application program
1. set up the playing program of audio frequency and video
(1) step finish after, the foundation of Qt/E development environment is to download Qt/E related resource bag from the Internet, and Qt/E related resource bag is installed to set up the development environment of Qt/E, download and install the Qtopia installation kit, be used to provide the graphical interfaces platform of handheld device, be compiled in the Qtopia that moves on the ARM platform, itself is integrated with audio/video player Qtopia, audio-video document is put into to compile under the Qtopia catalogue of finishing get final product playing audio-video document;
2. set up visual reversing application program
(2)-1. step was set up visual reversing application program by program after finishing, and compiled visual reversing program and generated executable file by cross compilation environment, and add it to embedded file system Yaffs;
(3) debugging, integrated embedded operating system
(2) step finish after, visit the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the read-out of Personal Computer machine, through obtaining moving normal program after the debugging compiling repeatedly, at last by fever writes with kernel, root file system, application program programming to the flash memory of microprocessing unit.
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| CN 200910191315 CN101704353B (en) | 2009-11-02 | 2009-11-02 | Vehicle-mounted multifunctional device and method for making embedded operating system thereof |
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| CN 200910191315 CN101704353B (en) | 2009-11-02 | 2009-11-02 | Vehicle-mounted multifunctional device and method for making embedded operating system thereof |
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| CN101704353B CN101704353B (en) | 2013-03-13 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103522961A (en) * | 2013-03-26 | 2014-01-22 | Tcl康钛汽车信息服务（深圳）有限公司 | Method, system and car machine system for rapidly starting car backing up images |
| CN106489138A (en) * | 2014-04-02 | 2017-03-08 | 大陆汽车有限公司 | Early stage rear view camera video in multiple processor structure shows |
| CN106549913A (en) * | 2015-09-18 | 2017-03-29 | 陕西重型汽车有限公司 | Intelligent touch screen onboard system based on car networking |
| WO2019127601A1 (en) * | 2017-12-27 | 2019-07-04 | 苏州睿艾迪汽车科技有限公司 | Ecu control motherboard for automotive power tailgate |
| CN106489138B (en) * | 2014-04-02 | 2019-07-16 | 大陆汽车有限公司 | Early stage rear view camera video in multiple processor structure is shown |
| CN110650305A (en) * | 2019-10-08 | 2020-01-03 | 深圳智者行天下科技有限公司 | Method for rapidly processing reversing image by intelligent rearview mirror |
| CN111897585B (en) * | 2020-09-30 | 2021-01-26 | 延锋伟世通电子科技（南京）有限公司 | Linux-based multi-hardware adaptation method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2707569Y (en) * | 2004-05-25 | 2005-07-06 | 浙江大华技术股份有限公司 | Vehicle mounted image and sound monitoring system |
| CN2731572Y (en) * | 2004-09-15 | 2005-10-05 | 牛辉 | Vehicle computer system |
| CN2901727Y (en) * | 2006-03-26 | 2007-05-16 | 成都市武侯区金字塔设计室 | Vehicle carried multifunction display device |
| CN200994256Y (en) * | 2006-12-18 | 2007-12-19 | 中国电子科技集团公司第三十八研究所 | Automobile comprehensive information platform |
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2009
- 2009-11-02 CN CN 200910191315 patent/CN101704353B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103522961A (en) * | 2013-03-26 | 2014-01-22 | Tcl康钛汽车信息服务（深圳）有限公司 | Method, system and car machine system for rapidly starting car backing up images |
| CN103522961B (en) * | 2013-03-26 | 2016-01-20 | Tcl康钛汽车信息服务（深圳）有限公司 | A kind of method of quick startup reverse image, system and car machine system |
| CN106489138A (en) * | 2014-04-02 | 2017-03-08 | 大陆汽车有限公司 | Early stage rear view camera video in multiple processor structure shows |
| CN106489138B (en) * | 2014-04-02 | 2019-07-16 | 大陆汽车有限公司 | Early stage rear view camera video in multiple processor structure is shown |
| US10604072B2 (en) | 2014-04-02 | 2020-03-31 | Continental Automotive Gmbh | Early rear view camera video display in a multiprocessor architecture |
| CN106549913A (en) * | 2015-09-18 | 2017-03-29 | 陕西重型汽车有限公司 | Intelligent touch screen onboard system based on car networking |
| CN106549913B (en) * | 2015-09-18 | 2019-10-08 | 陕西重型汽车有限公司 | Intelligent touch screen onboard system based on car networking |
| WO2019127601A1 (en) * | 2017-12-27 | 2019-07-04 | 苏州睿艾迪汽车科技有限公司 | Ecu control motherboard for automotive power tailgate |
| CN110650305A (en) * | 2019-10-08 | 2020-01-03 | 深圳智者行天下科技有限公司 | Method for rapidly processing reversing image by intelligent rearview mirror |
| CN111897585B (en) * | 2020-09-30 | 2021-01-26 | 延锋伟世通电子科技（南京）有限公司 | Linux-based multi-hardware adaptation method |
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| CN101704353B (en) | 2013-03-13 |
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