CN101704353B - 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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- CN101704353B CN101704353B CN 200910191315 CN200910191315A CN101704353B CN 101704353 B CN101704353 B CN 101704353B CN 200910191315 CN200910191315 CN 200910191315 CN 200910191315 A CN200910191315 A CN 200910191315A CN 101704353 B CN101704353 B CN 101704353B
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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
One, 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.
Two, background technology
Along with the development of national economy and improving constantly of living standards of the people, automobile is as means of transport and the vehicles, utilization rate constantly increases, and people also improve constantly the requirement of automobile, both required the safety of travelling and moveing backward at day by day crowded road, effectively avoid accident to occur, requiring again has abundant audio-visual seeing and hearing enjoyment in uninteresting driving process.Simultaneously, along with the development of automotive engineering and infotech, people strengthen day by day to the multi-functional demand of automobile, therefore develop Vehicular multifunctional infosystem important in inhibiting.
Existing vehicle-mounted multifunctional device and operating system thereof, be " vehicle-mounted multifunctional display device " patent of ZL200620033582.4 such as the patent No., disclosed display device is comprised of display, gauge tap, disc player and camera, one end of display links to each other with power supply by power lead, the other end links to each other with an end of gauge tap by data line, the other end of gauge tap is connected data output end by data line and disc player respectively and is connected with camera, landform, situation after the driver and conductor selects to see the TV of video disc storage or monitors car by gauge tap.The major defect of this device is: can only select one after 1. seeing TV or monitoring car, can not realize simultaneously two kinds of functions of audio-visual broadcast and Monitor for reverse.2. audio-visual broadcast can only be play the audio and video information of storing on the video disc, and need to and need to carry a large amount of video discs at vehicle configuration disc box, and the audio-visual video disc of long-time broadcast can cause the video disc wearing and tearing to reach the serious consequence of dialling bad movement on the other hand.And for example the patent No. is " vehicle-mounted multifunctional video player " patent of ZL200620137205.5, and disclosed player comprises: obtain data processing unit that audio frequency, coding video data process with the external multimedia equipment connection, dock audiovisual terminals in the car 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 demand of the audio-visual audiovisual 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.
Three, summary of the invention
The objective of the invention is the weak point for existing vehicle-mounted multifunctional device and operating system thereof, a kind of vehicle-mounted multifunctional device and embedded OS thereof are provided.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 the 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 in addition microprocessing unit.Its audio and video information receiving unit, for the storer (USB storage) with USB (universal serial bus) 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 storer) of microprocessing unit.Its shoot and monitor unit, be the camera with USB (universal serial bus) (USB camera) that is arranged at the automobile rear, in order to monitor the scene at automobile rear, in order to guarantee driving safety and the reversing safety of automobile, see through system bus (APB BUS) with the camera (USB camera) of USB (universal serial bus) and link to each other with microprocessing unit, with information real-time be transferred to microprocessing unit.Its indicative control unit, by forming with the liquid crystal display of LCD Interface with the touch-screen of 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 micro-chip processor, flash memory (FLASH storer), Synchronous Dynamic Random Access Memory (SDRAM storer), hub (usb hub) with USB (universal serial bus), intelligent storage card interface (SD interface), debugging interface (jtag interface), LCD Interface and touch screen interface, and consist of with the storer (USB storage) of USB (universal serial bus) with the camera (USB camera) of USB (universal serial bus).Micro-chip processor by system bus (AHB BUS) respectively with flash memory (FLASH storer), Synchronous Dynamic Random Access Memory (SDRAM storer), LCD Interface, touch screen interface, intelligent memory card (SD card interface), the hub (usb hub) that debugging interface (jtag interface) reaches with USB (universal serial bus) connects, with the hub (usb hub) of USB (universal serial bus) by system peripheral bus (APB BUS), respectively with the storer (USB storage) of USB (universal serial bus) be connected camera (USB camera) interface of USB (universal serial bus) and be connected.Wherein flash memory (FLASH storer) and Synchronous Dynamic Random Access Memory (SDRAM storer) are mainly finished the access of embedded OS and required audio/video file, outside with USB (universal serial bus) storer and camera by USB (universal serial bus) and be connected to hub (usb hub) with USB (universal serial bus) upper realize with micro-chip processor communicate by letter the intelligent storage card interface, LCD Interface, touch screen interface and debugging interface are intelligent memory card, liquid crystal display, touch-screen, and the emulation fever writes provides a kind of mode with being connected of micro-chip processor.
A kind of method for making embedded operating system of vehicle-mounted multifunctional device utilizes 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, download corresponding cross-compiler and install by network.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 boot (BootLoader)
After finishing in (1)-1. step, download the boot (BootLoader) of open source code from network, transplant modification according to the chip of oneself.Because the chip that the present invention adopts does not have built-in boot, now only need to write the programming program, and by on the flash memory (FLASH storer) of debugging interface (jtag interface) 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 for the ARM-LINUX operating system of ARM micro-chip processor, add again after the download specific hardware such as touch-screen, liquid crystal display (LCD), USB (universal serial bus) driver.
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 tool using to produce programming image file.
5. create Zhai Fusi (Yaffs) file system
(1)-4. the step finish after, set up flash memory (FLASH storer) disk partition of application program, download the source code of Yaffs to the website, and in kernel, set up corresponding catalogue the source code of its download is copied under its catalogue.The compiling kernel also downloads to kernel in the flash memory (FLASH storer) 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 the 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 mini-plant specially.Qtopia is based on the basis in Qt/E storehouse, and for 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 is graceful specially.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, such as application programs such as calendar, media player, Photo Browsers.
(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, and download and install the Qtopia installation kit, be used for providing the graphical interfaces platform of handheld device.Be compiled in the Qtopia that moves on the ARM platform, the mbedded GUI 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, in order to realize the image real-time acquisition function after finishing.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, access the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the display screen of personal computer (PC) machine, through obtaining the program of normal operation after debugging compiles repeatedly, by fever writes kernel, root file system, application program programming are arrived on the flash memory (FLASH storer) 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 display screen the video scene at real-time display automobile rear.Be connected to apparatus of the present invention by general universal series bus interface apparatus and intelligent memory card (SD), can very simply copy the audio-video document that oneself needs to apparatus of the present invention.Can show the car back spectacle by the icon on the touch display screen simultaneously, observe very easily the sight at automobile rear with the form of image.
2. the present invention operates by touch-screen, succinct, convenient, operator scheme intuitively, for the function that will finish and operate clear, display intuitively, increased simplification and the comfortableness of operation.
3. need to enrich when upgrading when the functions such as audio-visual amusement of system, substantially not need to do too large change and only need to add corresponding driver and application program and get final product.Because what we adopted is the (SuSE) Linux OS of increasing income, can both obtain clearly coded representation for the concrete link of developing, make things convenient for subsequent development and perfect, satisfy very easily the demand 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 car.It is the ideal device that guarantees that traffic safety and amusement are enjoyed.
Four, description of drawings
Fig. 1. the structural principle synoptic diagram of apparatus of the present invention;
Fig. 2. the principle schematic of the microprocessing unit module of apparatus of the present invention;
Fig. 3. the program flow chart of the inventive method.
Five, embodiment
Below in conjunction with embodiment, further specify the present invention.
Shown in Figure 1, a kind of vehicle-mounted multifunctional device is comprised of audio and video information receiving element, shoot and monitor unit, microprocessor and indicative control unit.Its audio and video information receiving unit, the USB (universal serial bus) that will access with the USB flash disk of USB (universal serial bus) microprocessing unit realizes 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, in order to guarantee driving safety and the reversing safety of automobile, see through system bus (APB BUS) with the camera of USB (universal serial bus) and link to each other with microprocessing unit, with information real-time be transferred to microprocessing unit.Its indicative control unit is comprised 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, be the micro-chip processor of ARM S3C2410 by model, flash memory (FLASH storer), Synchronous Dynamic Random Access Memory (SDRAM storer), hub (usb hub) with USB (universal serial bus), intelligent storage card interface (SD interface), debugging interface (jtag interface), LCD Interface and touch screen interface, and consist of with the storer (USB storage) of USB (universal serial bus) with camera (USB camera) interface of USB (universal serial bus).Micro-chip processor by system bus (AHB BUS) respectively with flash memory (FLASH storer), the SDRAM storer, LCD Interface, touch screen interface, intelligent memory card (SD card) interface, the hub (usb hub) that debugging interface (jtag interface) reaches with USB (universal serial bus) connects, with the hub (usb hub) of USB (universal serial bus) by system peripheral bus (APB BUS), respectively with the storer (USB storage) of USB (universal serial bus) be connected camera (USB camera) interface of USB (universal serial bus) and connect.Wherein flash memory (FLASH storer) and Synchronous Dynamic Random Access Memory (SDRAM storer) are mainly finished the access of embedded OS and required audio/video file, outside with USB (universal serial bus) storer and camera by USB (universal serial bus) and be connected to realize on the hub of USB (universal serial bus) with micro-chip processor communicate by letter the intelligent storage card interface, LCD Interface, touch screen interface and debugging interface are intelligent memory card, liquid crystal display, touch-screen, and the emulation fever writes provides a kind of mode with being connected of micro-chip processor.
A kind of method for making embedded operating system of vehicle-mounted multifunctional device utilizes 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, downloads cross-compiler (arm-linux-gcc) by network and installs.Configuration exploitation main frame, the hyper terminal (MINICOM) of configuration Linux, general parameters is baud rate 115200,8 of data bit, position of rest 1, no parity, software and hardware control stream is made as nothing.The effect of MINICOM software is the instrument as the monitor of debugging embedded microprocessing unit information output and keyboard input.
2. set up boot (BootLoader)
After finishing in (1)-1. step, set up, debugging boot loader program and by debugging interface (jtag interface) with its programming to microprocessing unit.Set up boot 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 boot, need to write the programming program of programming flash memory (FLASH storer) to the microprocessing unit, by debugging interface (jtag interface) Simple imitating device with flash memory (FLASH storer) chip of compiled boot programming to microprocessing unit.
3. transplant the kernel that model is Linux2.6
(1)-2. the step finish after, transplant linux kernel, the present invention adopts is the driver of the specific hardware such as annex solution crystal display screen, touch-screen, USB (universal serial bus) again after downloading for 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 tool using mkcramfs to produce programming image file.
5. create Zhai Fusi (Yaffs) file system
(1)-4. the step finish after, set up flash memory (FLASH storer) disk partition of application program, download the source code of Yaffs to the website, and in kernel, set up corresponding catalogue the source code of its download is copied under its catalogue.. the compiling kernel also downloads to kernel in the flash memory (FLASH storer) 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 the 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 mini-plant specially.Qtopia is based on the basis in Qt/E storehouse, and for 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 is graceful specially.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, such as application programs such as calendar, media player, Photo Browsers.
(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, and download and install the Qtopia installation kit, be used for providing the graphical interfaces platform of handheld device.Be compiled in the Qtopia that moves on the ARM platform, the mbedded GUI 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, in order to realize the image real-time acquisition function after finishing.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, access the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the display screen of personal computer (PC) machine, through obtaining the program of normal operation after debugging compiles repeatedly, by fever writes kernel, root file system, application program programming are arrived on the flash memory (FLASH storer) of microprocessing unit at last, the exploitation of whole 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 in addition microprocessing unit, its audio and video information receiving element, be storer and the intelligent memory card with USB (universal serial bus), with the storer of USB (universal serial bus) by system peripheral bus with link to each other with microprocessing unit by system bus again after hub with USB (universal serial bus) links to each other, its shoot and monitor unit, for being arranged at the camera with USB (universal serial bus) at automobile rear, utilizing camera interface by system peripheral bus with link to each other with microprocessing unit by system bus again after hub with USB (universal serial bus) links to each other, with information real-time be transferred to microprocessing unit, its indicative control unit, by forming with the liquid crystal display of LCD Interface with the touch-screen of touch screen interface, and link to each other with microprocessing unit by system bus respectively, its microprocessing unit is mainly by micro-chip processor, flash memory, Synchronous Dynamic Random Access Memory, the USB (universal serial bus) hub, the intelligent storage card interface, debugging interface, LCD Interface and touch screen interface, and consist of with the storer of USB (universal serial bus) with the camera of USB (universal serial bus), micro-chip processor by system bus respectively with flash memory, Synchronous Dynamic Random Access Memory, LCD Interface, touch screen interface, the hub that debugging interface reaches with USB (universal serial bus) connects, and micro-chip processor is connected with the intelligent storage card interface by system peripheral bus.
2. the method for making embedded operating system of a vehicle-mounted multifunctional device, utilize microprocessing unit claimed in claim 1 and computing machine, 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, download corresponding cross-compiler and install by network, hyper terminal above the configuration personal computer, general parameters is baud rate 115200;
2. set up boot
(1)-1. the step finish after, download the boot 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 boot, now only need to write the programming program, and by on the flash memory 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 for the ARM-LINUX operating system of ARM micro-chip processor, add again after the download touch-screen, liquid crystal display, USB (universal serial bus) specific hardware driver;
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 tool using to produce programming image file;
5. create Zhai and lie prostrate polite system
(1)-4. the step finish after, set up the flash memory disk partition of application program, download the source code of Yaffs to the website, and in kernel, set up corresponding catalogue the source code of its download is copied under its catalogue. the compiling kernel also downloads to kernel in the flash memory 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 for providing 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, access the information of microprocessing unit by the form of hyper terminal, Debugging message is presented on the display screen of personal computer machine, through obtaining the program of normal operation 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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| CN101704353B true CN101704353B (en) | 2013-03-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| US10604072B2 (en) | 2014-04-02 | 2020-03-31 | Continental Automotive Gmbh | Early rear view camera video display in a multiprocessor architecture |
| 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 |
| CN108179946B (en) * | 2017-12-27 | 2019-05-03 | 苏州睿艾迪汽车科技有限公司 | Automobile power back door ECU control mainboard |
| 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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| 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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| 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 |
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