CN101699557A - Dual processor based intelligent display device and control method thereof - Google Patents
Dual processor based intelligent display device and control method thereof Download PDFInfo
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- CN101699557A CN101699557A CN200910207787A CN200910207787A CN101699557A CN 101699557 A CN101699557 A CN 101699557A CN 200910207787 A CN200910207787 A CN 200910207787A CN 200910207787 A CN200910207787 A CN 200910207787A CN 101699557 A CN101699557 A CN 101699557A
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Abstract
The invention provides a dual processor based intelligent display device and a control method thereof. The dual processor based intelligent display device comprises a liquid crystal display, and further comprises an auxiliary processor and a main processor, wherein the auxiliary processor is used for acquiring internal temperature message, sending the message of closing the liquid crystal display when the internal temperature message is between a first preset value and a second preset value, sending the message of closing the intelligent display device when the internal temperature message is higher than the second preset value, acquiring external light intensity message, generating liquid crystal display brightness adjusting message according to the external light intensity message and sending the liquid crystal display brightness adjusting message; and the main processor is connected to the auxiliary processor through a serial interface, and is used for acquiring the message of closing the liquid crystal display to close the liquid crystal display, acquiring the message of closing the intelligent display device to cut off a power supply to close the intelligent display device, acquiring the liquid crystal display brightness adjusting message, and adjusting the brightness of the liquid crystal display according to the liquid crystal display brightness adjusting message. The device and the method meet the quick development requirement of modern rail transit industry.
Description
Technical field
The embodiment of the invention relates to electronic technology field, relates in particular to a kind of intelligent display device and control method thereof based on dual processor.
Background technology
China's track traffic at present enters fast-developing period, especially CRH (China RailwaysHigh-speed, China Railway High-speed) motor train unit opens widespread use with high-power AC transmission power car, simultaneously emerging subway transportation, light rail transit, intercity traffic etc. have been shifted China's track traffic onto a new peak to many-sided demand of rail vehicle.Intelligent display device is being born the important task of driver and vehicle man machine interface as important equipment parts of rail vehicle, also will have the multiple functions such as record of vehicle trouble data and service data simultaneously.In today of electronic industry fast development, the technology of the intelligent display device of related track vehicle is but backward relatively, can not satisfy the fast development of track traffic industry.
The characteristics of existing intelligent display device maximum have been to use uniprocessor (CPU) to control, and all peripheral hardwares and IO are all by same CPU control.This uniprocessor mainly is based on the Intel processor of X86 framework, this class processor have processing power higher, integrated abundant I/O and the characteristics of mapping, very wide in the industry control sector application for many years.In the control of intelligent display device, uniprocessor will be finished the communication that response is carried out, kept vehicle bus from the button of panel simultaneously, also will finish multiple operations such as the demonstration of data and storage.
Further, at the communication interface design aspect, the main communication interface that uniprocessor provided has serial communication interfaces such as RS232, RS485, RS424, can satisfy under the particular historical condition requirement to the vehicle bus communication preferably.
At the memory module design aspect, the intelligent display device of prior art adopts notebook IDE (Integrated Device Electronics mostly, Integrated Device Electronics) hard disk is as memory module, notebook IDE hard disk has multiple advantages such as storage space is big, reading speed is fast, can satisfy big, data required storage time of the long requirement of data volume that rail vehicle produces.
At the power module design aspect, because the intelligent display device of prior art is mainly at the rail vehicle design, so the input voltage of intelligent display device mostly is the DC110V design; Because therefore most DC5V that uses of processor or the power supply of DC3.3V need to isolate the conversion power supply by one and transfer DC110V to DC5V or DC3.3V, solved the requirement of locomotive power supply and processor again to working power.
Because the intelligent display device of prior art mainly is not develop under electronic technology many years ago also is not flourishing especially situation, it has well satisfied technical requirement and the functional requirement of that specific period of history for intelligent display device, but fast development along with the track traffic industry, in realizing process of the present invention, the inventor finds intelligent display device of the prior art, and there are the following problems at least:
The shortcoming of uniprocessor: because an independent processor will will respond button simultaneously, carries out bus communication, control liquid crystal display data presentation, read-write electric board are carried out data manipulation, shortage is to the monitoring of intelligent display device running environment, therefore reduced effective protection of intelligent display device, cause its reliability decrease, in addition under some particular surroundingss the intelligent display device cisco unity malfunction;
The shortcoming of IDE hard disk: the disadvantage of IDE hard disk just is that its inner structure has adopted the mode of magnetic head read-write disk, and it is mobile that magnetic head will carry out machinery in the reading and writing data process.And for the track traffic industry, gross vehicle is to be in vibrating state, and very big of the poor performance of IDE hard disk aspect shock resistance, the failure rate that causes the IDE hard disk directly influenced the reliability of display unit;
The shortcoming of communication interface: the intelligent display device of prior art only provides standard serial interfaces such as RS232, RS485, RS422, because traffic rate is slower, is difficult to satisfy the requirement of current track traffic industry to bus data transmission in enormous quantities;
The intelligent display device of prior art does not have power-off protection, when disconnecting battery feed, rail vehicle is forced to direct powered-down, the just situation of sudden power when write data of intelligent display device appears easily, causing data file to be damaged can't open, and causes the damage of IDE hard disk under the serious situation;
And the design of single DC110V input voltage can not have been satisfied the requirement of current track traffic industry for multiple supply voltage.
Summary of the invention
The embodiment of the invention provides a kind of intelligent display device and control method thereof based on dual processor, in order to solve the defective that existing intelligent display device can not satisfy the fast development of modern railway transportation industry, to realize having satisfied the fast-developing purpose that requires of modern railway transportation industry.
The embodiment of the invention provides a kind of intelligent display device based on dual processor on the one hand, comprises liquid crystal display, wherein, also comprises:
Auxiliary processor, be used to obtain internal temperature message, when temperature message is between first preset value and second preset value in described, then sends and close liquid crystal display message, when temperature message is higher than described second preset value in described, then sends and close intelligent display device message; Be used to obtain extraneous light intensity message, and, generate liquid crystal display brightness regulation information and sending according to described extraneous light intensity message;
Primary processor, described primary processor is connected in described auxiliary processor by serial line interface, be used to obtain the described liquid crystal display message of closing, to close described liquid crystal display according to the described liquid crystal display message of closing, obtain the described intelligent display device message of closing, with according to the described intelligent display device message of closing, cut off the electricity supply and close intelligent display device; Be used to obtain described liquid crystal display brightness regulation message, and, regulate the brightness of described liquid crystal display according to described liquid crystal display brightness regulation message.
The embodiment of the invention provides a kind of control method of the intelligent display device based on dual processor on the other hand, wherein, comprising:
Auxiliary processor is by the internal temperature of temperature sensor monitors intelligent display device, obtain described temperature sensor according to interior temperature message that described internal temperature generated, when temperature message is between first preset value and second preset value in described, then send and close liquid crystal display message, make described primary processor close described liquid crystal display according to the described liquid crystal display message of closing to primary processor; When temperature message is higher than described second preset value in described, then sends and close intelligent display device message, make described primary processor cut off the electricity supply and close intelligent display device according to the described intelligent display device message of closing to described primary processor;
And described auxiliary processor is monitored the extraneous light intensity of described intelligent display device by optical sensor, obtain described optical sensor according to extraneous light intensity message that described extraneous light intensity generated, and according to described extraneous light intensity message, generate liquid crystal display brightness regulation information and sending to described primary processor, make described primary processor according to described liquid crystal display brightness regulation message, regulate the brightness of described liquid crystal display.
The intelligent display device and the control method thereof based on dual processor of the embodiment of the invention, by use the technical scheme of primary processor and auxiliary processor at intelligent display device, solve the defective that existing intelligent display device can not satisfy the fast development of modern railway transportation industry, realized satisfying the fast-developing purpose that requires of modern railway transportation industry.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is intelligent display device embodiment one structural representation that the present invention is based on dual processor;
Fig. 2 is intelligent display device embodiment two structural representations that the present invention is based on dual processor;
Fig. 3 is the control method embodiment process flow diagram that the present invention is based on the intelligent display device of dual processor.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is intelligent display device embodiment one structural representation that the present invention is based on dual processor.As shown in Figure 1, the intelligent display device based on dual processor of present embodiment comprises primary processor 11, auxiliary processor 12 and liquid crystal display 13, primary processor 11 is connected with auxiliary processor 12, and primary processor 11 is connected with liquid crystal display 13, wherein, auxiliary processor 12 is used to obtain internal temperature message, when interior temperature message is between first preset value and second preset value, then send and close liquid crystal display message, when interior temperature message is higher than second preset value, then send and close intelligent display device message, this first preset value can be 60 ℃, and this second preset value can be 70 ℃; Be used to obtain extraneous light intensity message, and, generate liquid crystal display brightness regulation information and sending according to extraneous light intensity message; Primary processor 11 is connected in auxiliary processor 12 by serial line interface, be used to obtain and close liquid crystal display message,, obtain and close intelligent display device message to close liquid crystal display according to closing liquid crystal display message, with according to closing intelligent display device message, cut off the electricity supply and close intelligent display device; Be used to obtain liquid crystal display brightness regulation message, and, regulate the brightness of liquid crystal display according to liquid crystal display brightness regulation message; And primary processor 11 drives liquid crystal display 13 and shows.
In actual applications, primary processor 11 can adopt chip S3C2410A, auxiliary processor 12 can adopt chip C8051F040.Wherein, chip S 3C2410A be a low-cost high integration of Samsung company design, based on 32 risc microcontrollers of ARM920T.The inner integrated liquid crystal display controller of chip S3C2410A, NAND Flash controller, sdram controller, 3 UART serial ports, 4 passage DMA, 4 passage PWM timers and 117 multi-functional I/O mouths, RTC real-time clock, 8 path 10 position ADC, USB controller etc.; Chip C8051F040 is the CPU of Silicon laboratory company based on 51 nuclears, and inside has 64K byte high speed Flash, 4K*256 byte high-speed SRAM, two UART serial line interfaces, WatchDog Timer in 5 16 general bit timing devices, sheet, temperature sensor.Further, the chip S3C2410A of primary processor 11 and the chip C8051F040 of auxiliary processor 12 can directly link to each other by UART separately, need not to carry out voltage through MAX232 and transform, and can set up the serial communication passage like this between two processors.And host processor chip S3C2410A is because built-in liquid crystal display controller, so liquid crystal display is connected with the circuit of S3C2410A and is easy to realization.
The intelligent display device based on dual processor of present embodiment, by use the technical scheme of primary processor and auxiliary processor at intelligent display device, solve the defective that existing intelligent display device can not satisfy the fast development of modern railway transportation industry, realized satisfying the fast-developing purpose that requires of modern railway transportation industry.
Fig. 2 is intelligent display device embodiment two structural representations that the present invention is based on dual processor.As shown in Figure 2, the intelligent display device based on dual processor of this enforcement also comprises temperature sensor 21 on the basis of the foregoing description, optical sensor 22, memory device 23, Ethernet interface 24 and power transfer module 25, wherein, temperature sensor 21 and optical sensor 22 are connected in auxiliary processor 12, memory device 23 and Ethernet interface 24 are connected in primary processor 11, moreover, power transfer module 25 directly connects primary processor 11, auxiliary processor 12 and liquid crystal display 13, be used for power supply is carried out voltage transitions, and directly be primary processor 11, auxiliary processor 12 and liquid crystal display 13, this power supply is 24 volts of power supplys of direct current or 110 volts of power supplys of direct current, further, temperature sensor 21 is used for the internal temperature of monitoring intelligent display device, generate interior temperature message according to internal temperature, and send interior temperature message to auxiliary processor 12; Optical sensor 22 is used for the extraneous light intensity of monitoring intelligent display device, generates extraneous light intensity message according to extraneous light intensity, and sends extraneous light intensity message to auxiliary processor 12; Ethernet interface 24 is used for to primary processor 11 high-speed transfer data to display; Further, memory device 23 can be selected SD (Secure Digital Memory Card for use, safe digital card) card, SD jig have changes conveniently long service life and non-damageable advantage, on the basis of the foregoing description, auxiliary processor 12 also is used for monitoring power supply in real time by power transfer module 25, when monitoring the power supply outage, obtains power supply outage message, and, write memory device to primary processor 11 transmissions and stop message according to power supply outage message; Correspondingly, primary processor 11 also is used to obtain to be write memory device and stops message, to stop message according to writing memory device, stops the write operation to memory device 23, and closes intelligent display device automatically.
Further, keyboard, mouse are connected in primary processor 11, are used for the user and are provided with by 11 pairs of intelligent display devices of primary processor; RS232, RS485 and USB interface are connected in primary processor 11, are used to make primary processor 11 and corresponding communication apparatus to carry out communication.
Pilot lamp and hummer are connected in auxiliary processor 12, are used for when intelligent display device has exception response the user being played indicative function; The display screen button is connected in auxiliary processor 12, is used for the setting that the user is correlated with by 12 pairs of liquid crystal displays of auxiliary processor.
In actual applications and since the chip S3C2410A of primary processor 11 inner integrated the SD card controller, the SD card can directly connect S3C2410A; Because chip S3C2410A do not have the built-in ethernet controller, when design, the DM9000AE that has used Taiwan DAVICOM company realizes the control function of Ethernet as network chip, and wherein network transformer uses is chip H16106SN.
Further, because the chip C8051F040 of auxiliary processor 12 will make primary processor 11 regulate the brightness of the backlight of display panel automatically according to light intensity on every side, when design, can adopt the U.S.'s MP1010B of MPS company power supply chip to drive the backlight of liquid crystal display 13, the circuit that uses is the circuit of U.S. MPS company recommendation.
Moreover, fully take into account rail traffic vehicles at home and mainly use the situation of DC110V power supply and DC24V power supply, when selecting the encapsulation of power module, can be for the structure of DC110V and DC24V power supply employing same package, auxiliary circuit is then identical, can select DC110V or DC24V power supply as required in the practical application, and power supply be converted to the voltage of different sizes such as needed DC5V of intelligent display device or DC3.3V with power transfer module 25.
Intelligent display device externally provides a passage in addition, is used for the off-position by power transfer module 25 monitoring power supplies.Under the normal condition, behind the cut-off switch of pressing power supply, power supply can be delayed time the regular hour (such as 30 seconds), just thoroughly intelligent display device is stopped power supply.Therefore, when pressing the cut-off switch of power supply, can send a power supply outage message, auxiliary processor 12 according to this power supply outage message, is write memory device to primary processor 11 transmissions and is stopped message immediately after obtaining this power supply outage message, and primary processor 11 obtains to be write memory device and stops message, to stop message, stop write operation, and close intelligent display device automatically memory device 23 according to writing memory device.
The intelligent display device based on dual processor of present embodiment has following advantage:
By the dual processor design of primary processor and auxiliary processor, use primary processor to carry out bus communication, drive the storage work that liquid crystal display shows, finishes data; By the internal temperature of auxiliary processor monitoring intelligent display device and the extraneous light intensity of intelligent display device, adjust the mode of operation of intelligent display device automatically.Therefore, this design also can protect intelligent display device to adapt to various working environments when improving the primary processor data-handling capacity effectively, increases the service life, and reduces failure rate.
By using the SD card of current more advanced memory device, replaced the IDE disk, thereby solved the problem that the IDE disk damages easily, and the SD jig has and change conveniently, advantages such as long service life also are convenient to intelligent display device storage institute data downloaded.
Aspect communication, increase the wider Ethernet interface of current application, made intelligent display device possess the ability of quick transmission data in enormous quantities.
Auxiliary processor is after getting access to power supply outage message; write memory device to the primary processor transmission and stop message; primary processor stops shutdown automatically behind the memory write, has avoided the loss of the obliterated data that direct outage brings to memory device, has protected data and storer effectively.
And consider different applied environments, with the power supply of DC24V and the module of DC110V power supply employing same package, in actual applications, can be directly by changing power supply module adaptive complex operating environment.
To sum up, by use the technical scheme of primary processor and auxiliary processor at intelligent display device, solve the defective that existing intelligent display device can not satisfy the fast development of modern railway transportation industry, realized satisfying the fast-developing purpose that requires of modern railway transportation industry.
Fig. 3 is the control method embodiment process flow diagram that the present invention is based on the intelligent display device of dual processor.The control method based on the intelligent display device of dual processor of present embodiment comprises:
Further, the control method based on the intelligent display device of dual processor of embodiment also comprises:
When power supply cuts off the power supply, auxiliary processor obtains power supply outage message, and according to power supply outage message, write memory device to the primary processor transmission and stop message, primary processor is obtained write memory device and stop message, to stop message, stop write operation to memory device according to writing memory device.
Auxiliary processor is by the main running status of handling of WatchDog Timer monitoring, and when the operation information of not receiving primary processor at WatchDog Timer in the default time period, auxiliary processor then carries out reset operation by the hardware circuit that resets to primary processor.
The control method based on the intelligent display device of dual processor of the embodiment of the invention, by use the technical scheme of primary processor and auxiliary processor at intelligent display device, solve the defective that existing intelligent display device can not satisfy the fast development of modern railway transportation industry, realized satisfying the fast-developing purpose that requires of modern railway transportation industry.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. the intelligent display device based on dual processor comprises liquid crystal display, it is characterized in that, also comprises:
Auxiliary processor, be used to obtain internal temperature message, when temperature message is between first preset value and second preset value in described, then sends and close liquid crystal display message, when temperature message is higher than described second preset value in described, then sends and close intelligent display device message; Be used to obtain extraneous light intensity message, and, generate liquid crystal display brightness regulation information and sending according to described extraneous light intensity message;
Primary processor, described primary processor is connected in described auxiliary processor by serial line interface, be used to obtain the described liquid crystal display message of closing, to close described liquid crystal display according to the described liquid crystal display message of closing, obtain the described intelligent display device message of closing, with according to the described intelligent display device message of closing, cut off the electricity supply and close intelligent display device; Be used to obtain described liquid crystal display brightness regulation message, and, regulate the brightness of described liquid crystal display according to described liquid crystal display brightness regulation message.
2. the intelligent display device based on dual processor according to claim 1, it is characterized in that, also comprise temperature sensor, described temperature sensor is connected in described auxiliary processor, the internal temperature that is used for the monitoring intelligent display device, according to described internal temperature, generate described interior temperature message, and send described interior temperature message to described auxiliary processor.
3. the intelligent display device based on dual processor according to claim 1, it is characterized in that, also comprise optical sensor, described optical sensor is connected in described auxiliary processor, the extraneous light intensity that is used for the monitoring intelligent display device, according to described extraneous light intensity, generate described extraneous light intensity message, and send described extraneous light intensity message to described auxiliary processor.
4. the intelligent display device based on dual processor according to claim 1 is characterized in that,
Described auxiliary processor also is used for when power supply cuts off the power supply, and obtains power supply outage message, and according to described power supply outage message, writes memory device to described primary processor transmission and stop message.
5. the intelligent display device based on dual processor according to claim 4 is characterized in that,
Described primary processor also is used to obtain the described memory device of writing and stops message, to stop message according to the described memory device of writing, stops the write operation to memory device.
6. the intelligent display device based on dual processor according to claim 5 is characterized in that, described memory device is a safe digital card.
7. the intelligent display device based on dual processor according to claim 1 is characterized in that, also comprises Ethernet interface, and described Ethernet interface is connected in described primary processor, is used for to described primary processor high-speed transfer data to display.
8. the intelligent display device based on dual processor according to claim 1, it is characterized in that, also comprise power transfer module, be used for power supply is carried out voltage transitions, and directly be described primary processor, auxiliary processor and liquid crystal display power supply, described power supply is 24 volts of power supplys of direct current or 110 volts of power supplys of direct current.
9. the control method based on the intelligent display device of dual processor is characterized in that, comprising:
Auxiliary processor is by the internal temperature of temperature sensor monitors intelligent display device, obtain described temperature sensor according to interior temperature message that described internal temperature generated, when temperature message is between first preset value and second preset value in described, then send and close liquid crystal display message, make described primary processor close described liquid crystal display according to the described liquid crystal display message of closing to primary processor; When temperature message is higher than described second preset value in described, then sends and close intelligent display device message, make described primary processor cut off the electricity supply and close intelligent display device according to the described intelligent display device message of closing to described primary processor;
And described auxiliary processor is monitored the extraneous light intensity of described intelligent display device by optical sensor, obtain described optical sensor according to extraneous light intensity message that described extraneous light intensity generated, and according to described extraneous light intensity message, generate liquid crystal display brightness regulation information and sending to described primary processor, make described primary processor according to described liquid crystal display brightness regulation message, regulate the brightness of described liquid crystal display.
10. the control method of the intelligent display device based on dual processor according to claim 9 is characterized in that, also comprises:
Described auxiliary processor is monitored the off-position of power supply in real time, when power supply cuts off the power supply, obtain power supply outage message, and according to described power supply outage message, write memory device to described primary processor transmission and stop message, make described primary processor stop message, stop write operation memory device according to the described memory device of writing.
11. the control method of the intelligent display device based on dual processor according to claim 9 is characterized in that, also comprises:
Described auxiliary processor is by the described main running status of handling of WatchDog Timer monitoring, when the operation information of not receiving described primary processor at described WatchDog Timer in the default time period, described auxiliary processor then carries out reset operation by the hardware circuit that resets to described primary processor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184157A (en) * | 2011-05-19 | 2011-09-14 | 华东师范大学 | Information display device based on dual processor cooperation |
| CN104958082A (en) * | 2013-12-19 | 2015-10-07 | 海信集团有限公司 | Ultrasonic device |
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2009
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102184157A (en) * | 2011-05-19 | 2011-09-14 | 华东师范大学 | Information display device based on dual processor cooperation |
| CN102184157B (en) * | 2011-05-19 | 2012-10-10 | 华东师范大学 | Information display device based on dual processor cooperation |
| CN104958082A (en) * | 2013-12-19 | 2015-10-07 | 海信集团有限公司 | Ultrasonic device |
| CN104958082B (en) * | 2013-12-19 | 2017-11-24 | 海信集团有限公司 | A kind of ultrasonic device |
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| CN101699557B (en) | 2011-09-14 |
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