CN106427575A - Full-liquid crystal virtual instrument based on double-MCU hardware framework and operation control method thereof - Google Patents
Full-liquid crystal virtual instrument based on double-MCU hardware framework and operation control method thereof Download PDFInfo
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- CN106427575A CN106427575A CN201611018582.1A CN201611018582A CN106427575A CN 106427575 A CN106427575 A CN 106427575A CN 201611018582 A CN201611018582 A CN 201611018582A CN 106427575 A CN106427575 A CN 106427575A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 78
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- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
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- 238000006243 chemical reaction Methods 0.000 claims description 2
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- 230000006870 function Effects 0.000 description 4
- 230000036541 health Effects 0.000 description 4
- 230000000474 nursing effect Effects 0.000 description 4
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- 238000011161 development Methods 0.000 description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Arrangement of adaptations of instruments
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- B60K35/213—
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- B60K35/22—
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- B60K35/81—
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
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Abstract
The invention provides a full-liquid crystal virtual instrument based on a double-MCU hardware framework and an operation control method thereof. The full-liquid crystal virtual instrument comprises a liquid crystal screen as well as a main MCU system and an auxiliary MCU system, wherein the liquid crystal screen comprises a liquid crystal driving plate and a liquid crystal backlight plate; the main MCU system and the auxiliary MCU system are in communication connection; the main MCU system is connected with an overall entertainment system and a liquid crystal driving plate respectively, is used for operating an operation system, and furthermore interacts with the overall entertainment system and the liquid crystal driving plate; the main MCU system at least comprises a main MCU; the auxiliary MCU system is connected with an overall basis system and the liquid crystal backlight plate respectively; the auxiliary MCU system at least comprises an auxiliary MCU.
Description
Technical field
The present invention relates to automobile instrument field, more particularly, to a kind of full liquid crystal virtual instrument based on double MCU hardware architectures
And its progress control method.
Background technology
Automobile combination meter, obtains the important information source of vehicle-state as driver, and its safety and reliability requires
Higher, do not allow that damage phenomenon occurs in principle in the process of moving, in field, except conventional instrument, a kind of full liquid crystal is virtual
The technology of instrument is also suggested, and compares conventional instrument, and full liquid crystal virtual instrument requires MCU speed fast from performance, supports that 3D adds
Fast engine, using real time operating system, possesses high-speed video input and output processing function.
This just puts forward higher requirement to automobile combination meter hardware designs, various exacting terms make hardware designs,
System design is more difficult, causes the exploitation predicament of engineer.In prior art, shortage can take into account realize conventional instrument and
The feature of full liquid crystal virtual instrument, can reduce the reliable hardware means of development difficulty again.
Content of the invention
In order to solve above technical problem, the invention provides a kind of full liquid crystal Virtual instrument based on double MCU hardware architectures
Table, including liquid crystal display screen, described liquid crystal display screen includes liquid crystal drive board and LCD backlight plate, also includes main MCU system and auxiliary MCU system
System；Communicate between described main MCU system and auxiliary MCU system and be connected；
Described main MCU system connects car load entertainment systems and described liquid crystal drive board respectively, in order to run operating system,
And then interact with described car load entertainment systems and/or described liquid crystal drive board；Described main MCU system at least includes main MCU；Described
Main MCU system further in order to：
Receive and process the transmission of described car load entertainment systems and the data come and/or described auxiliary MCU system process and obtain
Data；
The meter information receiving is fed back to described car load entertainment systems, and then reaches car load new line display device；
Liquid crystal panel is updated by described liquid crystal drive board；
Described auxiliary MCU system is also respectively connected with car load basic system and described LCD backlight plate, described auxiliary MCU system
At least include assist MCU, described auxiliary MCU system further in order to：
Receive from described car load basic system, process and obtain car load data message, and by part or all of feedback therein
To described main MCU system, and drive described LCD backlight plate work.
Optionally, described main MCU system also includes CVBS receiver module, LVDS receiver module, and described main MCU passes through described
CVBS receiver module and LVDS receiver module communicate the described car load entertainment systems of connection respectively, and then：
Described main MCU further in order to：
The car load photographic head data described car load entertainment systems transmission being received by described CVBS receiver module and coming, and energy
So that it is updated and be shown in liquid crystal panel；
The middle control multi-medium data described car load entertainment systems transmission being received by described LVDS receiver module and coming, and then
The navigation screen in liquid crystal panel can be updated accordingly and/or entertain picture accordingly.
Optionally, described main MCU system also includes the first internal CAN communication module and LVDS sending module, described main MCU
It is connected with described auxiliary MCU system communication by the described first internal CAN communication module, described main MCU is sent out by described LVDS
Module communication is sent to connect described car load entertainment systems, described main MCU is further in order to by the described first internal CAN communication module
The data being received from described auxiliary MCU system transmission and coming, meter information therein is passed through described LVDS sending module and sends
To described car load new line display device.
Optionally, described main MCU system also includes connecting to the memory modules of described main MCU, FLASH memory module and crystalline substance
Shake.
Optionally, described main MCU system also includes USB module and the UART serial communication module connecting to described main MCU,
Described USB module and the communication of UART serial communication module connect to car load test interface, and USB module UART serial communication module is used
Debug in operating system,
Described main MCU further in order to：
By the two-way communication of described USB module, realize the software upgrading of operating system；
Realize main MCU background operating system during operating system debugging by described UART serial communication module to control and state
Print.
Optionally, described auxiliary MCU system also includes the second internal CAN communication module, external CAN communication module, switch
Signal input module and analogue signal input module, described auxiliary MCU is defeated by described external CAN communication module, switching signal
Enter module and analogue signal input module to be connected with the communication of described car load basic system, and then：
Described auxiliary MCU further in order to：
The car load simulation receiving and processing described car load basic system feedback by described analogue signal input module and come
Signal and/or power supply signal；
The car load switch receiving and processing described car load basic system feedback by described switching signal input module and come
Signal；
Based on described analogue signal and/or power supply signal and/or car load switching signal, obtain car load data message, by it
In partially or completely through the described second internal CAN communication module feedback to described main MCU system；
Drive described LCD backlight plate work.
Optionally, described auxiliary MCU system also includes being connected to the crystal oscillator of described auxiliary MCU, loudspeaker drive module and refers to
Show lamp drive module.
Optionally, described main MCU system also includes PMIC power management module, and described auxiliary MCU system also includes first
Power transfer module, power management module and second source modular converter, power supply one side that described car load basic system is supplied
Face is supplied to described auxiliary MCU after described first power transfer module conversion, on the other hand successively first through described second source
Modular converter is changed, then supply output extremely described main MCU after described PMIC power management module, and described power management module is used
To respond the feedback of described auxiliary MCU, control whether to supply power to described second source modular converter.
Optionally, described main MCU system and auxiliary MCU system between also by connect to described main MCU first inside
CAN communication module connects to the second internal CAN communication module of auxiliary MCU response control and instructs and receive and dispatch verification data,
To realize communication verification.
Present invention also offers a kind of progress control method of the full liquid crystal virtual instrument based on double MCU hardware architectures, use
The operation of the full liquid crystal virtual instrument based on double MCU hardware architectures being provided with alternative of the present invention is controlled, and walks including following
Suddenly：
S1：Power to described auxiliary MCU, described auxiliary MCU initialization；
S2：Described auxiliary MCU is inputted by described external CAN, switching signal input module and analogue signal
Module, from described car load basic system receiving data, obtains car load data message；
S3：Described auxiliary MCU drives described LCD backlight drive module work, and controls power management module, to realize
Power supply to described main MCU；
S4：Described auxiliary MCU and described main MCU communication；
S5：After electricity on described main MCU, run bootstrap, operating system and 3D engine, connect by CVBS in real time meanwhile
Receive module, LVDS receiver module and LVDS sending module and described car load entertainment systems communication, gone here and there by UART during main MCU debugging
Mouth communication module is realized operating system and is controlled and state printing, is used for software upgrading maintenance by described USB module, and does corresponding
Process；
S6：Optionally update UI interface, thus updating liquid crystal panel.
In the present invention and its alternative, employ double MCU schemes, main MCU system can adopt ARM core microprocessor,
Mainly it is responsible for USB communication, video communication processes and image shows, software can adopt QNX, LINUX operating system；Auxiliary MCU
System can mainly complete power management, CAN communication, low speed signal is processed, loudspeaker drive using conventional 32 ARM core processors
At least one function such as dynamic, software can adopt timesharing task.
The program solves the problems, such as that single-chip liquid crystal instrument operating system is difficult to meet minimum starting time, to greatest extent at present
Retain and be multiplexed existing CAN communication technology, reduce development difficulty, shorten the construction cycle, save development cost, solve single-chip static
Power consumption is unsatisfactory for greatly the problem of Industry code requirements, considers from driving safety, and double MCU are higher than single chip solution reliability, prevents
Only under the conditions of extreme operating condition, operating system crashes, and cannot restart, it is achieved that video communication, 3D UI in further alternative
Acceleration renders, and this framework can achieve many specifications, such as, multiresolution TFT liquid crystal display screen, can cover 3.5 cun, 7 cun, 10.25 cun,
12.3 cun of four kinds of screens, pixel can cover 400 × 240,800 × 480,1280 × 480,1440 × 548,1280 × 720 5 kinds
Specification, meets the various demands of user, and this programme has continued conventional combination instrumental technique, has opened up full liquid crystal virtual instrument
Function is it is achieved that combination instrument platform compounds.
Brief description
Fig. 1 is that the module of the full liquid crystal virtual instrument in an alternate embodiment of the present invention based on double MCU hardware architectures connects
Schematic diagram；
Fig. 2 is that the operation of the full liquid crystal virtual instrument in an alternate embodiment of the present invention based on double MCU hardware architectures controls
Flow chart；
In figure, 1, main MCU system；2nd, assist MCU system；3rd, car load；4th, liquid crystal display screen
1.1st, PMIC power management module；1.2nd, 2G DDR3 memory modules；1.3rd, 4G eMMC FLASH memory module；
1.4th, 16M SPI NOR FLASH memory module；1.5th, the first internal CAN communication module；1.6th, crystal oscillator；1.7th, USB module；
1.8th, UART serial communication module；1.9th, LVDS sending module；1.10th, LVDS receiver module；1.11st, CVBS receiver module；
1.12 main MCU；
2.1st, second source modular converter；2.2nd, power management module；2.3rd, the first power transfer module；2.4th, external
CAN communication module；2.5th, switching signal input module；2.6th, analogue signal input module；2.7th, display lamp drive module；2.8、
Loudspeaker drive module；2.9th, LCD backlight drive module；2.10, crystal oscillator；2.11st, the second internal CAN communication module；1.12, auxiliary
Help MCU；
3.1st, car load basic system；3.2nd, car load entertainment systems；3.3rd, car load test interface.
4.1st, liquid crystal drive version；4.2nd, LCD backlight plate.
Specific embodiment
The full liquid crystal virtual instrument based on double MCU hardware architectures that the present invention provided below with reference to Fig. 1 and Fig. 2 and its
Progress control method is described in detail, and it is optional embodiment of the present invention it is believed that those skilled in the art are not
Change in the range of present invention spirit and content, it can be modified and polish.
The invention provides a kind of full liquid crystal virtual instrument based on double MCU hardware architectures, including liquid crystal display screen 4, described liquid
Brilliant screen 4 includes liquid crystal drive board 4.1 and LCD backlight plate 4.2, also includes main MCU system 1 and auxiliary MCU system 2；Described master
Communicate between MCU system 1 and auxiliary MCU system 2 and be connected；
Described main MCU system 1 connects car load entertainment systems and described liquid crystal drive board 4.1 respectively, in order to run operation
System, and then interact with described car load entertainment systems and/or described liquid crystal drive board 4.1；Described main MCU system 1 at least includes
Main MCU1.12, can adopt ARM core microprocessor；Described main MCU system 1 further in order to：
Receive and process the transmission of described car load entertainment systems and the data come and/or described auxiliary MCU system 2 process and obtain
Data；
The meter information receiving is fed back to described car load entertainment systems, and then reaches car load new line display device；
Liquid crystal panel is updated by described liquid crystal drive board 4.1；Main MCU1.12 updates TFT by receiving the signal stream come
Liquid crystal panel；
Comprise following function in conjunction with sketching further hereinafter：Main MCU system 1 completes video signal input and output
Process, comprise CVBS, LVSD；Main MCU system 1 completes USB, and UART communication is used for control operation system and updates software, main MCU
System 1 completes liquid crystal display screen and shows.
Optionally, also by connecting to the of described main MCU1.12 between described main MCU system 1 and auxiliary MCU system 2
One internal CAN communication module 1.5 connects receives and dispatches verification data to the second internal CAN communication module 2.11 of auxiliary MCU2.12, with
Realize communication verification.Further specifically, the internal CAN communication module 1.52.11 two-way communication of auxiliary MCU2.12 and first,
Receive main MCU system 1 data, prevent main MCU1.12 from crashing for verification data, and as mentioned before, send instrument
Data.Described main MCU1.12 is mutually verified main MCU1.12 with auxiliary MCU2.12 by CAN communication, crashes and prevents from crashing.
Described auxiliary MCU system 2 is also respectively connected with car load basic system and described LCD backlight plate 4.2, described auxiliary MCU
System 2 at least include assist MCU2.12, described auxiliary MCU system 2 further in order to：
Receive from described car load basic system, process and obtain car load data message, and by part or all of feedback therein
To described main MCU system 1, and described LCD backlight plate 4.2 is driven to work.
Optionally, described main MCU system 1 also includes CVBS receiver module 1.11, LVDS receiver module 1.10, described master
MCU1.12 passes through described CVBS receiver module 1.11 and LVDS receiver module 1.10 communicates connection described car load amusement system respectively
System, and then：
Described main MCU1.12 further in order to：
The car load photographic head data described car load entertainment systems transmission being received by described CVBS receiver module 1.11 and coming,
And it can be made to update be shown in liquid crystal panel；
The middle control multi-medium data described car load entertainment systems transmission being received by described LVDS receiver module 1.10 and coming,
And then the navigation screen in liquid crystal panel can be updated accordingly and/or entertain picture accordingly.
Optionally, described main MCU system 1 also includes the first internal CAN communication module 1.5 and LVDS sending module 1.9, institute
State main MCU1.12 to be connected with described auxiliary MCU system 2 communication by the described first internal CAN communication module 1.5, described master
MCU1.12 passes through described LVDS sending module 1.9 communication and connects described car load entertainment systems, and described main MCU1.12 uses further
So that the data that described auxiliary MCU system 2 transmits is received from by the described first internal CAN communication module 1.5, will be therein
Meter information is sent to described car load new line display device by described LVDS sending module 1.9.It can be seen that, LVDS sending module
1.9 mainly send image information to new line display device HUD.Described main MCU1.12 is assisted by CAN communication with auxiliary MCU2.12
View carries out data transfer.
Wherein, CVBS receiver module 1.11, LVDS receiver module 1.10, LVDS sending module 1.9 mainly complete video
Transformation task, CVBS receiver module 1.11 receives backup camera information, controls many matchmakers in LVDS receiver module 1.10 primary recipient
Body, navigation data, UART serial communication module 1.8 is used for operating system and debugs, and usb communication module 1.7 is used for software upgrading.
Optionally, described main MCU system 1 also includes connecting to the memory modules of described main MCU1.12, FLASH storage mould
Block and crystal oscillator.Wherein, PMIC power management module 2.21.1,2G DDR3 memory modules 1.2,4G eMMC FLASH memory module
1.3rd, 16M SPI NOR FLASH memory module 1.4, crystal oscillator, main MCU1.12ARM core 1.12 are to constitute operating system to rise
The basic hardware key element come, PMIC power management module 2.21.1 provides various voltages to make chip normal work to main MCU1.12,
2G DDR3 memory modules 1.2 are as the ephemeral data of the main storage program area of internal memory of main MCU1.12,4G eMMC FLASH
File system in the main storage program area of memory module, instrument UI data, 3D library file, application program and communication row
Table, 16M SPI NOR FLASH memory module 1.4 mainly stores bootstrap BOOT.
Optionally, described main MCU system 1 also includes USB module 1.7 and the UART serial ports connecting to described main MCU1.12
Communication module 1.8, described USB module 1.7 and UART serial communication module 1.8 communication connect to car load test interface, described master
MCU1.12 further in order to：
By the two-way communication of described USB module 1.7, realize the software upgrading of operating system.
By described UART serial communication module 1.8 realize main MCU background operating system during operating system debugging control and
State prints.
UART serial communication module 1.8 is used for operating system and debugs, and USB module 1.7 is used for main MCU1.12 software refreshing,
First internal CAN communication module 1.5 is mainly used in main MCU1.12 ARM core 1.12 and receives auxiliary MCU2.12 2.12 control letter
Number, it is sent to verification data.
As fully visible, relevant main MCU system 1：
Therein, MCU adopts ARM core microprocessor, and it is with crystal oscillator, in PMIC power management module 2.21.1,2G DDR3
Storing module, 4G eMMC FLASH memory module, 16M SPI NOR FLASH memory module constitute the minimum system of ARM core microprocessor
Unite for running operating system, ARM core microprocessor and the first internal CAN communication module 1.5 two-way communication, receive auxiliary
MCU2.12 data is used for updating TFT liquid crystal panel, and sending verification data prevents from crashing；Unidirectional with CVBS receiver module 1.11 logical
Letter, receives car load photographic head data and is used for being shown on TFT liquid crystal display screen；With LVDS receiver module 1.10 one-way communication, in reception
Control multi-medium data, for updating the navigation of TFT liquid crystal display screen, amusement picture；With LVDS sending module 1.9 one-way communication, to car load
New line display device HUD sends meter information；With UART serial communication module 1.8 two-way communication, receive control instruction and send behaviour
Make system status information, use for system debug；With USB module 1.7 two-way communication, for system software upgrading etc..
Optionally, described auxiliary MCU system 2 also includes the second internal CAN communication module 2.11, external CAN communication module
2.4th, switching signal input module 2.5 and analogue signal input module 2.6, described auxiliary MCU2.12 passes through described external CAN and leads to
News module 2.4, switching signal input module 2.5 and analogue signal input module 2.6 are connected with the communication of described car load basic system,
And then：
Described auxiliary MCU2.12 further in order to：
The car load mould receiving and processing described car load basic system feedback by described analogue signal input module 2.6 and come
Intend signal and/or power supply signal；Further specifically, analogue signal input module 2.62.5 is to car load analogue signal and power supply
Signal carries out nursing one's health, partial pressure, filtering pass to auxiliary MCU2.12
The car load being received and processing described car load basic system feedback by described switching signal input module 2.5 and come is opened
OFF signal；Switching signal input module 2.52.6 carries out to car load switching signal nursing one's health, shaping, filtering pass to auxiliary
MCU2.12；
Based on described analogue signal and/or power supply signal and/or car load switching signal, obtain car load data message, by it
In feed back to described main MCU system 1 partially or completely through the described second internal CAN communication module 2.11；
Described LCD backlight plate 4.2 is driven to work.Specifically, auxiliary MCU2.12 2.12 drives mould by LCD backlight
Block 2.9 can control break-make and the brightness of TFT liquid crystal display screen backlight.
Optionally, described auxiliary MCU system 2 also includes crystal oscillator, the loudspeaker drive module being connected to described auxiliary MCU2.12
2.8 and display lamp drive module 2.7.Auxiliary MCU2.12 exports sound by loudspeaker drive module 2.8；Auxiliary MCU2.12 passes through
Display lamp drive module 2.7 controls instruction lamp on/off.
Optionally, described main MCU system 1 also includes PMIC power management module 2.21.1, and described auxiliary MCU system 2 is also
Including the first power transfer module 2.3, power management module 2.2 and second source modular converter 2.1, described car load basic system
The power supply one side supplied is supplied to described auxiliary MCU2.12, the opposing party after changing through described first power transfer module 2.3
Face is first changed through described second source modular converter 2.1 successively, then supplies defeated after described PMIC power management module 2.21.1
Go out to described main MCU1.12, described power management module 2.2, in order to respond the feedback of described auxiliary MCU2.12, controls whether to supply
Electricity is to described second source modular converter 2.1.MCU2.12 is also by power management module 2.2 panel interior power power consumption for auxiliary.
In other words, auxiliary MCU2.12 is responsible for completing low speed signal process, power management and car load CAN communication.Additionally, institute
State auxiliary MCU2.12 to be controlled using RTOS timesharing task system；Described auxiliary MCU2.12 core microprocessor adopt QNX,
LINUX embedded real-time operating system is controlled, and meanwhile, completes instrument 3D based on OPENGL 3D speed technology and renders display,
Reduce pointer jitter problem.
As fully visible, relevant auxiliary MCU system 2：
Auxiliary MCU2.12 passes through power management module 2.2 panel interior power power consumption；Digital signal input module is to car load
Switching signal carries out nursing one's health, shaping, filtering pass to auxiliary MCU2.12；Analogue signal input module 2.6 is to car load analogue signal
Carry out with power supply signal nursing one's health, partial pressure, filtering pass to auxiliary MCU2.12；Auxiliary MCU2.12 passes through LCD backlight drive module
2.9 control TFT liquid crystal display screen backlight illuminations, auxiliary MCU2.12 exports sound by loudspeaker drive module 2.8；Auxiliary MCU2.12 leads to
Cross display lamp drive module 2.7 and control instruction lamp on/off；Auxiliary MCU2.12 and internal CAN communication module two-way communication, receive master
MCU system 1 data prevents main MCU1.12 from crashing for verification data, occurs signal stream to update TFT liquid crystal panel；With CAN communication
Module two-way communication, for receiving car load data, sends instrumented data.
Present invention also offers a kind of progress control method of the full liquid crystal virtual instrument based on double MCU hardware architectures, use
The operation of the full liquid crystal virtual instrument based on double MCU hardware architectures being provided with alternative of the present invention is controlled, and walks including following
Suddenly：
S1：Power to described auxiliary MCU, described auxiliary MCU initialization；Specifically, available power transfer module
(12V-5VLDO) power to auxiliary MCU
S2：Described auxiliary MCU is inputted by described external CAN, switching signal input module and analogue signal
Module, from described car load basic system receiving data, obtains car load data message；
S3：Described auxiliary MCU drives described LCD backlight drive module work, and controls power management module, to realize
Power supply to described main MCU；Further specifically, display lamp is driven to drive mould after the completion of also including assisting MCU information processing
Block, the work of loudspeaker drive module.
S4：Described auxiliary MCU and described main MCU communication；Specifically, auxiliary MCU opens the second internal CAN communication mould
Block, with the communication of main MCU system, sends control data, and then receives verification data；
S5：After electricity on described main MCU, run bootstrap, operating system and 3D engine, connect by CVBS in real time meanwhile
Receive module, LVDS receiver module and LVDS sending module and described car load entertainment systems communication, gone here and there by UART during main MCU debugging
Mouth communication module is realized operating system and is controlled and state printing, is safeguarded for software upgrading by described USB module and do corresponding
Process；Specifically, after electricity on main MCU, run bootstrap first, run operating system afterwards, operating system is run after getting up
3D engine, simultaneously real-time processing CVBS receiver module, LVDS receiver module, LVDS sending module, UART serial communication module,
USB module signal, opens internal CAN communication module；
S6：Optionally update UI interface, thus updating liquid crystal panel.Specifically, after the completion of main MCU preparation,
Receive the data that the internal CAN communication module of auxiliary MCU sends over, selective renewal UI interface, finally refresh liquid crystal display screen and draw
Face.
Claims (10)
1. a kind of full liquid crystal virtual instrument based on double MCU hardware architectures, including liquid crystal display screen, described liquid crystal display screen includes liquid crystal drive
Plate and LCD backlight plate it is characterised in that：Also include main MCU system and auxiliary MCU system；Described main MCU system and auxiliary MCU
Between system, communication connects；
Described main MCU system connects car load entertainment systems and described liquid crystal drive board respectively, in order to run operating system, and then
Interact with described car load entertainment systems and/or described liquid crystal drive board；Described main MCU system at least includes main MCU；Described master
MCU system further in order to：
Receive and process the number that described car load entertainment systems transmit and next data and/or the process of described auxiliary MCU system obtain
According to；
The meter information receiving is fed back to described car load entertainment systems, and then reaches car load new line display device；
Liquid crystal panel is updated by described liquid crystal drive board；
Described auxiliary MCU system is also respectively connected with car load basic system and described LCD backlight plate, and described auxiliary MCU system is at least
Including auxiliary MCU, described auxiliary MCU system further in order to：
Receive from described car load basic system, process obtains car load data message, and partly or entirely feeds back to institute by therein
State main MCU system, and drive described LCD backlight plate work.
2. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
System also includes CVBS receiver module, LVDS receiver module, and described main MCU passes through described CVBS receiver module and LVDS receives mould
Block communicates the described car load entertainment systems of connection respectively, and then：
Described main MCU further in order to：
The car load photographic head data described car load entertainment systems transmission being received by described CVBS receiver module and coming, and can make
Its renewal is shown in liquid crystal panel；
The middle control multi-medium data described car load entertainment systems transmission being received by described LVDS receiver module and coming, and then can
Update the navigation screen in liquid crystal panel accordingly and/or entertain picture accordingly.
3. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
System also includes the first internal CAN communication module and LVDS sending module, and described main MCU is by the described first internal CAN communication
Module is connected with described auxiliary MCU system communication, and described main MCU passes through described LVDS sending module communication and connects described car load joy
Music system, described main MCU passes in order to be received from described auxiliary MCU system by the described first internal CAN communication module further
Defeated and next data, meter information therein is sent to described car load new line display device by described LVDS sending module.
4. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
System also includes connecting to the memory modules of described main MCU, FLASH memory module and crystal oscillator.
5. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
System also includes USB module and the UART serial communication module connecting to described main MCU, and described USB module and UART serial ports lead to
News module communication connect to car load test interface, described main MCU further in order to：
By the two-way communication of described USB module, realize the software upgrading of operating system；
Realize main MCU background operating system control and state during operating system debugging by described UART serial communication module to beat
Print.
6. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described auxiliary
It is defeated that MCU system also includes the second internal CAN communication module, external CAN communication module, switching signal input module and analogue signal
Enter module, described auxiliary MCU is by described external CAN communication module, switching signal input module and analogue signal input module
It is connected with the communication of described car load basic system, and then：
Described auxiliary MCU further in order to：
The car load analogue signal receiving and processing described car load basic system feedback by described analogue signal input module and come
And/or power supply signal；
The car load switching signal receiving and processing described car load basic system feedback by described switching signal input module and come；
Based on described analogue signal and/or power supply signal and/or car load switching signal, obtain car load data message, will be therein
Partially or completely through the described second internal CAN communication module feedback to described main MCU system；
Drive described LCD backlight plate work.
7. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described auxiliary
MCU system also includes crystal oscillator, loudspeaker drive module and the display lamp drive module being connected to described auxiliary MCU.
8. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
System also includes PMIC power management module, and described auxiliary MCU system also includes the first power transfer module, power management module
With second source modular converter, the power supply one side that described car load basic system is supplied turns through described first power transfer module
Supply after changing to described auxiliary MCU, on the other hand successively first through the conversion of described second source modular converter, then through described PMIC electricity
After source control module, to described main MCU, described power management module, in order to respond the feedback of described auxiliary MCU, is controlled for supply output
Whether system supplies power to described second source modular converter.
9. the full liquid crystal virtual instrument based on double MCU hardware architectures as claimed in claim 1 it is characterised in that：Described main MCU
Connect to auxiliary MCU also by the first internal CAN communication module connecting to described main MCU between system and auxiliary MCU system
The second internal CAN communication module between response control instruct and receive and dispatch verification data, to realize communication verification.
10. a kind of progress control method of the full liquid crystal virtual instrument based on double MCU hardware architectures it is characterised in that：In order to reality
The operation of one of now as any in claim 1 to 9 full liquid crystal virtual instrument based on double MCU hardware architectures controls, including such as
Lower step：
S1：Power to described auxiliary MCU, described auxiliary MCU initialization；
S2：Described auxiliary MCU is by described external CAN, switching signal input module and analogue signal input module
From described car load basic system receiving data, obtain car load data message；
S3：Described auxiliary MCU drives described LCD backlight drive module work, and controls power management module, to realize to institute
State the power supply of main MCU；
S4：Described auxiliary MCU and described main MCU communication；
S5：After electricity on described main MCU, run bootstrap, operating system and 3D engine, meanwhile, in real time mould is received by CVBS
Block, LVDS receiver module and LVDS sending module and described car load entertainment systems communication, and do respective handling；
S6：Optionally update UI interface, thus updating liquid crystal panel.
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| CN201611018582.1A CN106427575A (en) | 2016-11-18 | 2016-11-18 | Full-liquid crystal virtual instrument based on double-MCU hardware framework and operation control method thereof |
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| CN201611018582.1A CN106427575A (en) | 2016-11-18 | 2016-11-18 | Full-liquid crystal virtual instrument based on double-MCU hardware framework and operation control method thereof |
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