Vehicle-mounted display terminal with real-time data storage function and method thereof

A technology for on-board display and storage functions, applied in instruments, computer control, simulators, etc., can solve problems such as damage to storage components, limited number of reads and writes of NAND memory, and inability to save system data, improving service life and facilitating promotion. The effect of implementing and expanding storage capacity

Inactive Publication Date: 2016-01-13
716TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of reads and writes of NAND memory is limited, frequent read and write operations will easily lead to the increase of bad blocks, resulting in the loss of key data, the crash of the operating system, and even the damage of storage components
Moreover, the existing display terminal does not have a delay shutdown function, and it will stop working at the moment of power failure, and the system data at the time of power failure cannot be saved, which is particularly unfavorable for the cause of failure of the positioning system

Method used

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  • Vehicle-mounted display terminal with real-time data storage function and method thereof
  • Vehicle-mounted display terminal with real-time data storage function and method thereof

Examples

Experimental program
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Embodiment 1

[0024] The present invention selects the I.MX6 processor of Freesclae Company to build main processor module 1, selects 256MBNAND memory as program storage 2-1, 1MBFRAM as data cache 2-2, and 16GBEMMC as data storage 2-3. The NAND is connected to the processor through the EMI interface and is used to store the Linux operating system and user applications. The FRAM is connected to the processor through the SPI interface and acts as a data cache to temporarily store real-time data. The EMMC is interconnected with the processor through the uSDHC interface, and is used to store the real-time data written in the whole block from the FRAM. The bus communication module 4 is to complete the information interaction function with field controllers, sensors and other equipment through CAN, RS232 / 485 / 422, network, USB and other bus forms. The data acquisition module 5 refers to the display terminal input and output function expanded through the GPIO port of the processor, which can direc...

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Abstract

The invention discloses a vehicle-mounted display terminal with a real-time data storage function. The vehicle-mounted display terminal comprises a master processor module, a storage module, a power supply conversion module, a bus communication module, a signal acquisition module, a display driving module and a human-computer interaction module. The storage function of real-time data is completed by adopting multiple storage media. Real-time storage of the operation data is completed via an FRAM in working, and the data are stored in a storage unit via a delay turn-off method when power is off. The storage function of the real-time data is completed without influencing security of an operating system so that the service life of the display terminal can be substantially enhanced, users can search and analyze system equipment operation state parameters anytime, system fault points can be positioned, the control strategy can be improved and production efficiency can be enhanced.

Description

technical field [0001] The invention belongs to the field of vehicle-mounted display terminals, in particular to a vehicle-mounted display terminal and method with real-time data storage function. Background technique [0002] Vehicle-mounted display terminal refers to an important means of human-computer interaction installed in mobile machinery, ships, mines, underground and other industrial occasions: it interconnects with vehicle-mounted controllers, sensors, HMI and other equipment through field buses such as CAN, serial ports, and networks, and analyzes the bus. Information, display the status information of the field equipment through the LCD display screen, and display it in a friendly man-machine interface; receive the operator's command through the button, touch screen, etc., transmit the command through the bus, and drive the on-site actuator to act through the controller and other equipment. Complete the control function. [0003] With the deepening of large-sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0428G05B2219/2637
Inventor 乔旭兴闫文奇颜伟刘杰王晨王灿灿严顶杨乾乾周睿孙波
Owner 716TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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