CN205573641U - Digital instrument system and car - Google Patents
Digital instrument system and car Download PDFInfo
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- CN205573641U CN205573641U CN201620183439.7U CN201620183439U CN205573641U CN 205573641 U CN205573641 U CN 205573641U CN 201620183439 U CN201620183439 U CN 201620183439U CN 205573641 U CN205573641 U CN 205573641U
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Abstract
The application discloses digital instrument system and car specifically includes host system, video acquisition module, on -vehicle connector, video output module and storage device. The video acquisition module be used for receiving the car the output of video acquisition equipment carry out the video signal that video acquisition obtained to the surrounding environment, on -vehicle connector is used for receiving the operating information and the vehicle condition information of car, host system is used for receiving video signal, operating information and vehicle condition information to be provided with an information output end and data receiving and dispatching port, storage device is connected with data receiving and dispatching port for program file and operating data that storage master control equipment need use, video output module is connected with an information output end for receive host system output video signal, operating information and vehicle condition information to the driver exports the display device of car, so that can conveniently read all kinds of information. Can satisfy the demand of carrying out the effective communication between car and the driver better.
Description
Technical field
The application relates to automobile technical field, more particularly, it relates to a kind of digital instrument system and automobile.
Background technology
Along with the development of auto industry, in terms of people's safety, comfortableness and energy-conserving and environment-protective to automobile
Demand gradually steps up, and substantial amounts of Vehicle Electronic Control equipment starts to be widely used on automobile.At automobile
Under the background of intellectuality, digitized, vehicle cloud service and big data, traditional automobile instrument shows due to it
The information shown is less, is only capable of simple displaying speed, engine speed, oil mass and water temperature, cannot expire
The demand of effective communication between foot automobile and driver.
Summary of the invention
In view of this, the application provides a kind of digital instrument system and automobile, multinomial for display automobile
Operational factor, to meet the demand carrying out effective communication between automobile and driver.
To achieve these goals, it is proposed that scheme as follows:
A kind of digital instrument system, is applied to automobile, including:
Video acquisition module, for receive on described automobile video capture device output to surrounding
Carry out the video signal of video acquisition acquisition；
Onboard connector, for receiving operation information and the vehicle condition information of described automobile；
The main control module being connected with described video acquisition module, described onboard connector respectively, is used for connecing
Receive described video signal, described operation information and described vehicle condition information, and be provided with information output sum
According to transmitting-receiving port；
The Video Output Modules being connected with described information output, is used for receiving described video signal, institute
State operation information and described vehicle condition information, and export the display device of described automobile；
The storage device being connected with described data transmit-receive port, being used for storing described main control device needs to adjust
Program file and service data.
Optionally, described video acquisition module includes video frequency collection card.
Optionally, described onboard connector includes CAN controller and switching value interface, wherein:
Described CAN controller is for connecting the CAN of described automobile, and is used for total from described CAN
Line receives the operation information of described automobile；
Described switching value interface is for receiving the vehicle condition information of described automobile.
Optionally, described vehicle condition information includes car light signal, safety signal, vehicle door status, braking state
With all or part of status information in parked state.
Optionally, described storage device includes hosting unit and storage medium, wherein:
Described main memory unit is used for storing said program file；
Described storage medium is used for storing described service data.
Optionally, the train movement recording equipment being connected with described main control module is also included, wherein:
Described train movement recording equipment is used for storing described video signal, described operation information and described vehicle condition letter
Breath.
Optionally, described train movement recording equipment is provided with the interface equipment for installing SD/TF card.
Optionally, described main control module is additionally provided with UART system debug interface.
Also include the USB interface device being connected with described main control module, wherein:
Described USB interface device is used for receiving burning data.
A kind of automobile, is provided with digital instrument system as above.
From above-mentioned technical scheme it can be seen that this application discloses a kind of digital instrument system and automobile,
This system is applied on automobile, for providing the various information of reflection vehicle condition for driver, specifically wraps
Include main control module, video acquisition module, onboard connector, Video Output Modules and storage device.Video
Acquisition module carries out video acquisition acquisition for what the video capture device receiving automobile exported to surrounding
Video signal, onboard connector is for receiving operation information and the vehicle condition information of automobile, and main control module is used
In receiving video signal, operation information and vehicle condition information, and it is provided with first information outfan and data receipts
Make a start mouth；Storage device is connected with data transmit-receive port, the journey called for storing main control device to need
Preface part and service data；Video Output Modules is connected with first information outfan, is used for receiving master control
Video signal, operation information and the described vehicle condition information of module output, and export the display device of automobile,
To enable a driver to conveniently read various information.The video signal that can export due to Video Output Modules,
Operation information and vehicle condition information are many far beyond the operational factor that simulation instrument can show, therefore, it is possible to more
Meet well the demand carrying out effective communication between automobile and driver.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the application, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structured flowchart of a kind of digital instrument system that Fig. 1 provides for the embodiment of the present application；
The structured flowchart of a kind of digital instrument system that Fig. 2 provides for another embodiment of the application；
The structured flowchart of a kind of digital instrument system that Fig. 3 provides for the another embodiment of the application；
The structured flowchart of a kind of digital instrument system that Fig. 4 provides for the another embodiment of the application；
The software Booting sequence figure of a kind of digital instrument system that Fig. 5 provides for the application；
The method of a kind of start image copy that Fig. 6 provides for the application；
A kind of partial sleep awakening mode that Fig. 7 provides for the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out
Clearly and completely describe, it is clear that described embodiment is only some embodiments of the present application, and
It is not all, of embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of the application protection.
Embodiment one
The structured flowchart of a kind of digital instrument system that Fig. 1 provides for the embodiment of the present application.
As it is shown in figure 1, the digital instrument system that the present embodiment provides is applied on automobile, it is used for substituting biography
The simulation instrument of system shows various data to driver, specifically includes main control module 10, video acquisition module
20, onboard connector 30, Video Output Modules 40 and storage device 50, wherein main control module 10 is respectively
It is connected with video acquisition module 20, onboard connector 30, Video Output Modules 40, storage device 50.
Video acquisition module 20 is for connecting the video capture device on automobile, preferred video capture card.Depending on
Frequently collecting device includes the photographic head for gathering peripheral vehicle environment scene, and these photographic head can be arranged
In parking stall, headstock and car both sides, the video letter that video capture device is then collected by video acquisition module 20
Number output is to main control module 10.
Onboard connector 30 is for receiving operation information and the vehicle condition information of automobile.
Preferably, onboard connector 30 includes CAN controller 31 and switching value interface 32, and CAN is controlled
Device 31 processed is connected with the CAN of automobile, for receiving the operation of the automobile that CAN collects
Information；And switching value interface 32 is connected with car light, safety device, car door and the brake system of automobile respectively
Connecing, thus receive the vehicle condition information of this automobile, vehicle condition information includes car light signal, safety signal, car
All or part of information in door state, braking state and parked state.
Main control module 10 is provided with information output 11 and data sending and receiving end mouth 12.Video Output Modules 40
Being connected with the information output 11 of main control module 10, storage device 12 is then by this data transmit-receive port
12 are connected with main control module 10.
The display device of the driver's cabin that Video Output Modules 40 is positioned at automobile with automobile is connected, for from
Information output 11 receives video signal, operation information and the vehicle condition information of main control module 10 output, and
Exporting on this display device, display device can be selected for compact reliable liquid crystal display, is used for showing this
Video signal, operation information and vehicle condition information, to facilitate driver to read.
Storage device 50 is used for storing program file and service data, and this program file is main control module 10
Carry out the documentation of program required for video acquisition, information data and signal output；And service data is master control
Module is produced intermediate data and various status data in running.
Preferably, in order to make storage device 50 can respectively program file and service data be carried out storage and
Reading, storage device 50 includes the main memory unit 51 for storing program file and for storage running number
According to storage medium 52.
From technique scheme it can be seen that present embodiments provide a kind of digital instrument system, this system
It is applied on automobile, for providing the various information of reflection vehicle condition for driver, specifically includes master control
Module, video acquisition module, onboard connector, Video Output Modules and storage device.Video acquisition mould
Block is for receiving the video that surrounding carries out video acquisition acquisition of the video capture device output of automobile
Signal, onboard connector is for receiving operation information and the vehicle condition information of automobile, and main control module is used for receiving
Video signal, operation information and vehicle condition information, and it is provided with first information outfan and data sending and receiving end mouth；
Storage device is connected with data transmit-receive port, for store main control device need the program file that calls and
Service data；Video Output Modules is connected with first information outfan, is used for receiving main control module output
Video signal, operation information and described vehicle condition information, and export the display device of automobile, so that driving
The person of sailing can conveniently read various information.The video signal that can export due to Video Output Modules, operation
Information and vehicle condition information are many far beyond the operational factor that simulation instrument can show, therefore, it is possible to preferably
Meet the demand carrying out effective communication between automobile and driver.
Embodiment two
The structured flowchart of a kind of digital instrument system that Fig. 2 provides for another embodiment of the application.
As in figure 2 it is shown, the digital instrument system that the present embodiment provides is to increase on the basis of a upper embodiment
If train movement recording equipment 60.
This train movement recording equipment 60 is connected with main control module 10, for receiving automobile from main control device 10
Video information, operation information and vehicle condition information and preserved, for later to the driving conditions of automobile or
Car body state is estimated providing foundation, plays the function of the black box of aircraft.
This train movement recording equipment 60 is provided with SD/TF card interface, for grafting be used for storing video information,
The SD card of operation information and vehicle condition information or TF card, to facilitate driver at any time by SD card or TF
Card takes off and is read or unloading.
Embodiment three
The structured flowchart of a kind of digital instrument system that Fig. 3 provides for the another embodiment of the application.
As it is shown on figure 3, the digital instrument system that the present embodiment provides is to increase on the basis of a upper embodiment
If UART system debug interface 70.This UART system debug interface 70 is used for connecting commissioning device
This system is debugged.
Embodiment four
The structured flowchart of a kind of digital instrument system that Fig. 4 provides for the another embodiment of the application.
As shown in Figure 4, the digital instrument system that the present embodiment provides is to increase on the basis of a upper embodiment
If USB interface device 80, this device for system debug personnel in system burning program file or its
His support document.
Below, the work process of the digital instrument that the application provides is specifically described, due to the application's
Digital instrument system uses following work process, thus has than general digital instrument and start speed faster
Degree.
As it is shown in figure 5, the startup key step of this digital instrument system includes firmware in powerup/reset, sheet
Run, hardware device initializes, the state value that reads in memorizer and select Starting mode according to state value.
If be detected that be to start or newly increased peripheral hardware for the first time, then it is to use XIP (Excute In Place)
Mode starts, Bootloader and linux kernel the most directly runs on Flash, and initiating hardware is built
Vertical memory headroom maps.If not start for the first time or and do not increase peripheral hardware newly, then use part to stop
The mode waken up up of sleeping starts, and loads the kernel image that last session preserves, and after completing kernel startup, searches
Rope equipment and installation drive, carry root file system, optimal startup subscription services, depending between monitoring service
Lai Xing.Perform RCScript basic service and initialize and start graphic interface, loaded in parallel service, application
Program initialization etc..
When starting for the first time or when new peripheral hardware being detected, use XIP (Execute In Place performs on the spot)
Technology.
Digital instrument system powers on, and after the initialization of hardware to be done, bootloader is not by compression
Kernel code copies internal memory to, but directly runs in Flash.Just can use unpressed linux
Kernel, saves copy and the time decompressed.
As shown in Figure 6, when program is run, the reflection in internal memory, according to whether read-write and operation
Position, can be largely classified into two kinds: a kind of is read-only code segment text；Another kind be writeable at the beginning of
Beginningization data segment data and the data segment bss of no initializtion.After system electrification, linux kernel reflection exists
After performing on Flash equipment, can carry out by following flow process:
1. the data section in kernel image and bss section are copied in RAM
2. set page table, start MMU (Memory Management Unit), enable translation
Search buffering TLB (Translation Lookaside Buffers), improve the performance of CPU accesses page table.
3. the cache memory (Cache) between CPU and main memory is opened, including instruction
Buffering I-Cache and data buffering D-Cache.In kernel running, it is empty that code segment is mapped to Flash
Between, and it is loaded in data buffering I-Cache operation.Data section and bss section are mapped to RAM and host sky
Between, and it is loaded in instruction buffer D-Cache operation.
After using XIP technology, system saves and decompresses and the time 30% of copy code segment, also reduces
The RAM primary memory space that code segment takies.
Non-when starting first or do not have new hardware adaptor to add, use partial sleep awakening mode.Such as Fig. 7
Shown in, partial sleep awakening mode includes shutdown process and start process.
Shutdown process is:
After digital instrument receives shutdown command, first can stop receive CAN data, close based on
The meter interface of OpenVG exploitation, stops application layer services, kernel session is preserved, be stored to disk
Medium, uses when starting shooting for next time.(after depot requires system stalls, dark current is generally less than
1mA, in order to meet low-power consumption demand, after system closedown, it is impossible to power to internal memory.Kernel image is protected
It is stored to the eMMC storage medium that power-off is not lost, system power dissipation can be reduced.And once by automobile electricity
Pond exhausts, and also can affect the startup of automobile engine, will comprise the page used in a large number by application program
Giving up, this has been greatly reduced the time needed for write storage medium)
Start process is:
After digital instrument receives start-up command, it is to start from partial sleep awakening mode when detecting, can jump
Cross hardware initialization and the process of software environment preparation, kernel image be loaded directly in main memory RAM,
Recover the running status of kernel during last session.Followed by CAN controller, resolve vehicle-mounted connection
The signal that device is brought, and carry out merging display to the protocol information after resolving by Video Output Modules.
Because the reflection only loaded only has kernel session, there is no application layer conversation so that start-up course copy is conciliate
Compression process is greatly shortened.And abandon major applications layer conversation.
Process it addition, the application additionally uses segmentation startup, particularly as follows:
1. utilize the feature of polycaryon processor concurrent operation, reading hibernation file and decompressing function are divided
Open.
Kernel Booting sequence is usually and first copies the kernel image compressed on storage medium to internal memory, then
To decompress kernel, and finally jump to the entry address of kernel, whole process is serial.As a rule,
Compression ratio is the highest, and algorithm is the most complicated, and the speed of decompression is the slowest, thus cause doubling time (with
Compression ratio is inversely proportional to) conciliate the contradiction between compression time (being typically directly proportional) to compression ratio.Here profit
By the feature of polycaryon processor concurrent operation, use reflection reproduction technology (such as DMA2RAM) at a high speed
Kernel image is copied to internal memory, simultaneously parallel decompression kernel image, thus effectively eliminate compression ratio
Contradiction with decompression time.
2. add the multistage and recover function
Whole Restoration stage includes two parts: 1) re-read the kernel image of last session, quickly
Recover virtual address space, set up page table, set the environment etc. that architecture is relevant.2) initialization section
Exceptionally set, such as CAN controller, further work for the later stage ready.
3. the most read-write according to subregion, use two kinds of file system, for read-only part (such as application
Program or substantial amounts of library file and configuration file), then use read-only file system format (eg:squashfs,
Ramfs), carry speed is improved；For read-write part (as the video as drive recorder stores)
File system, then use read-write file system format (eg:ext3/ext4)
Further, startup script is also improved by the application, particularly as follows:
1. the dependency started between script respective services is analyzed.Some start script and depend on other
Service, they can block until the service relied on starts, if the service relied on can not start, they meetings
Wait the most always.Therefore must solve when send event, when process event.
After linux completes boot kernel, init process can be started, resolve inittab script, and start corresponding
System service, traditional linux be can serial start each service.This patent uses based on dependence
The solution of relation, is written over inittab and rc.sysinit script.To service and finger daemon
Dependence encodes, if certain service is without dependence, and parallel starting the most immediately, if certain clothes
Business depends on other services, then need all services ensureing its all dependence can use.
2. use busybox as Shell control station, optimize systematic function.
Shell control station is the window that user is mutual with operating system, traditional BShell, although CShell
Powerful, but volume is too fat to move, uses busybox as an independent program here.And according to need
Seek the function configuring Shell, such as the code polishing etc. of Tab, take less than in digital instrument system, complete
Entirely can crop.
Embodiment five
The present embodiment additionally provides a kind of automobile, and this automobile is provided with an any of the above embodiment and is provided
Digital instrument system, it is possible to show that for driver the operational factor shown far beyond traditional analog instrument is for many
Video signal, operation information and vehicle condition information such that it is able to preferably meet between automobile and driver
Carry out the demand of effective communication.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this Shen
Please.Multiple amendment to these embodiments will be apparent from for those skilled in the art,
Generic principles defined herein can be in the case of without departing from spirit herein or scope, at it
Its embodiment realizes.Therefore, the application is not intended to be limited to the embodiments shown herein, and
It is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a digital instrument system, is applied to automobile, it is characterised in that including:
Video acquisition module, for receive on described automobile video capture device output to surrounding
Carry out the video signal of video acquisition acquisition；
Onboard connector, for receiving operation information and the vehicle condition information of described automobile；
The main control module being connected with described video acquisition module, described onboard connector respectively, is used for connecing
Receive described video signal, described operation information and described vehicle condition information, and be provided with information output sum
According to transmitting-receiving port；
The Video Output Modules being connected with described information output, is used for receiving described video signal, institute
State operation information and described vehicle condition information, and export the display device of described automobile；
The storage device being connected with described data transmit-receive port, being used for storing described main control device needs to adjust
Program file and service data.
2. digital instrument system as claimed in claim 1, it is characterised in that described video acquisition module
Including video frequency collection card.
3. digital instrument system as claimed in claim 1, it is characterised in that described onboard connector bag
Include CAN controller and switching value interface, wherein:
Described CAN controller is for connecting the CAN of described automobile, and is used for total from described CAN
Line receives the operation information of described automobile；
Described switching value interface is for receiving the vehicle condition information of described automobile.
4. digital instrument system as claimed in claim 3, it is characterised in that described vehicle condition information includes
All or part of state in car light signal, safety signal, vehicle door status, braking state and parked state
Information.
5. digital instrument system as claimed in claim 1, it is characterised in that described storage device includes
Host unit and storage medium, wherein:
Described main memory unit is used for storing said program file；
Described storage medium is used for storing described service data.
6. the digital instrument system as described in any one of Claims 1 to 5, it is characterised in that also include with
The train movement recording equipment that described main control module is connected, wherein:
Described train movement recording equipment is used for storing described video signal, described operation information and described vehicle condition letter
Breath.
7. digital instrument system as claimed in claim 6, it is characterised in that described train movement recording equipment
It is provided with the interface equipment for installing SD/TF card.
8. digital instrument system as claimed in claim 6, it is characterised in that described main control module also sets
It is equipped with UART system debug interface.
9. digital instrument system as claimed in claim 6, it is characterised in that also include and described master control
The USB interface device that module is connected, wherein:
Described USB interface device is used for receiving burning data.
10. an automobile, it is characterised in that arrange just like the numeral described in any one of claim 1～9
Instrument system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183439.7U CN205573641U (en) | 2016-03-10 | 2016-03-10 | Digital instrument system and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183439.7U CN205573641U (en) | 2016-03-10 | 2016-03-10 | Digital instrument system and car |
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| Publication Number | Publication Date |
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| CN205573641U true CN205573641U (en) | 2016-09-14 |
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| CN201620183439.7U Active CN205573641U (en) | 2016-03-10 | 2016-03-10 | Digital instrument system and car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348157A (en) * | 2018-11-21 | 2019-02-15 | 深圳创维数字技术有限公司 | Based on circuit, the method and device for controlling information iteration in video realization |
-
2016
- 2016-03-10 CN CN201620183439.7U patent/CN205573641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348157A (en) * | 2018-11-21 | 2019-02-15 | 深圳创维数字技术有限公司 | Based on circuit, the method and device for controlling information iteration in video realization |
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Address after: 215347 7th floor, IIR complex, 1699 Weicheng South Road, Kunshan City, Suzhou City, Jiangsu Province Patentee after: Kunshan Microelectronics Technology Research Institute Address before: 215347 7th floor, complex building, No. 1699, Zuchongzhi South Road, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUNSHAN BRANCH, INSTITUTE OF MICROELECTRONICS OF CHINESE ACADEMY OF SCIENCES |