Device and method for preventing loss of system parameter based on power state prediction

Abstract

The invention discloses a device and a method for preventing loss of a system parameter based on power state prediction. The device is connected with the input of a vehicle-mounted storage battery, and comprises a vehicle-mounted power supply module, a vehicle-mounted storage battery power supply state detection module, a processor MCU, a MCU working power supply boosting module, a first switch, a second switch and a Flash storage medium, wherein the vehicle-mounted power supply module is used for converting the input of the vehicle-mounted storage battery into a working power supply of the processor MCU, and comprises a power supply filtering unit and a DC-DC conversion unit; the vehicle-mounted storage battery power supply state detection module and the processor MCU are used for monitoring the power supply of the vehicle-mounted storage battery in real time; the processor MCU is also used for performing interrupted protection, FLASH erasing and writing, and data storage; the MCU working power supply boosting module is used for boosting the input power supply and providing working power supply to the processor MCU; the first switch is used for controlling whether the vehicle-mounted power supply module supplies power; and the second switch is used for controlling the MCU working power supply boosting module supplies power. According to the device provided by the invention, protection on the application parameter of the system is achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle equipment, in particular to a device and method for predicting and preventing system parameter loss based on power supply status. Background technique [0002] Small consumer electronic devices usually use non-volatile chips with built-in batteries based on random access memory to prevent the loss of real-time parameters of the application system. This method has a slow writing speed and a limited number of times of erasing and writing, and is only suitable for data volumes. Applications that are small and do not require frequent writes. [0003] For applications that require large-capacity and high-speed repeated storage of system real-time parameters such as vehicle-mounted travel recorders, it is necessary to prevent the processor from saving system parameters and performing FLASH erasing operations. , resulting in the destruction of the file system stored in the FLASH, resulting in the inabil...

AI Technical Summary

Problems solved by technology

[0003] For applications that require large-capacity and high-speed repeated storage of system real-time parameters such as vehicle-mounted travel recorders, it is necessary to prevent the processor from saving system parameters and performing FLASH erasing operations. , resulting in the destruction of the file system stored in the FLASH, resulting in the inability to boot the vehicle-mounted driving recorder

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