Vehicle-mounted hard disk shake-proof method based on road condition forecast

Abstract

The present invention discloses a vehicle-mounted hard disk shake-proof method based on road condition forecasts. Through an acceleration sensor and a vehicle-mounted central processing unit, environmental vibration situations of vehicle-mounted hard disks are detected and road conditions of a vehicle are forecast; every time an accelerated speed larger than or equal to a preset shake-proof threshold value is collected, read and write operation of a magnetic head to the vehicle-mounted hard disks is stopped; and that bumps still exist within a preset period is forecast, so the read and write operation of the magnetic head to the vehicle-mounted hard disks is not recovered within the preset period, thereby effectively reducing burst bumps during the read and write operation of the magnetic head to the vehicle-mounted hard disks, and greatly reducing magnetic disk faults of the hard disks caused by shakes.

Description

technical field [0001] The invention relates to a hard disk protection technology, in particular to a vehicle-mounted hard disk shockproof method based on road condition prediction. Background technique [0002] Vehicle-mounted products, especially vehicle-mounted video recorders use a mechanical hard disk (a type of disk) as the data storage medium, and various anti-shock measures will be taken to protect the safety of reading and writing of the hard disk. The current anti-shock measures include mechanical shock absorption, including oil bladders, springs, silicone etc.; there are electronic shock absorption, including data cache, acceleration sensor and other measures. Mechanical shock absorption can greatly reduce the failure of the on-board hard disk caused by the vibration of the hard disk, but in actual use, there is still a part of the failure rate. [0003] The traditional anti-vibration method for on-board hard disks using acceleration sensors is to detect the vehi...

AI Technical Summary

Problems solved by technology

However, for environments with harsh and complex road conditions, where bumps occur continuously or intermittently, this method is not forward-looking enough. It cannot effectively avoid sudden bumps when restoring data read and write. It needs to be detected by the acceleration sensor first, and then sent to the central processing unit for judgment. After the central processing unit judges the result, it will control the magnetic head to leave the hard disk. At this moment, the magnetic head may have caused a certain degree of damage to the hard disk, especially Injuries are more severe when bumps occur frequently over short distances

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