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

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...

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

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