HDD Motor State Detection for Vibration-Free Monitoring

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Solution Overview

Problem

Conventional hard disk drive (HDD) monitoring systems induce troubles by operating the motor to acquire control information, even when the HDD is stopped, which can lead to physical damages due to vibration or shock.

Innovation Solution

A HDD monitoring apparatus and method that includes an elapsed time detector, a motor state detector, a control information acquirer, and an information storage, which only acquire and store control information when the system is in operation and the motor is not stopped, avoiding unnecessary motor operation and potential damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the motor is operated to acquire control information at predetermined time intervals, then monitoring capability is improved, but physical damages from vibration or shock may occur

Engineering Contradiction:

Improvemonitoring capabilityVSAvoidphysical damage from vibration

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The monitoring system dynamically adjusts its operation based on the motor state. Instead of operating at fixed time intervals regardless of motor status, the system detects whether the motor is currently operating and only acquires control information during motor operation periods. This dynamic adaptation eliminates unnecessary motor starts and prevents physical damage while maintaining monitoring capability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The monitoring system uses the motor's own operational state as the trigger for information acquisition. By detecting the motor's self-generated operation signals and using these to control when monitoring occurs, the system avoids external interference and unnecessary motor activations, thereby preventing vibration-induced damage while maintaining reliable monitoring.

Inventive Principle:

Principle #25Self-service

2Loss of information

If the motor is started even when the HDD is stopped to acquire control information, then data accessibility is improved, but unnecessary motor operation induces troubles

Engineering Contradiction:

Improvedata accessibilityVSAvoidHDD operational integrity

Core Design Contradiction:

Loss of informationVSReliability

Solution Approach 1:

The system performs preliminary detection of the motor's operational state before attempting to acquire control information. By checking whether the motor is already operating, the system avoids unnecessary motor starts and prevents operational troubles while ensuring data accessibility during legitimate motor operation periods.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The monitoring system implements feedback control by continuously detecting motor operation status and using this information to determine when to acquire control data. This feedback mechanism ensures information is collected only when the motor is naturally running, preventing unnecessary activations and maintaining HDD reliability while preserving data accessibility.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS7492541B2Apparatus and method of monitoring hard disk drive

Publication Date: 2009.02.17 PANASONIC HOLDINGS CORP

AI summary

An apparatus and method of monitoring a hard disk drive (HDD) include a HDD motor state detector for detecting the state of the motor of the HDD. Because the control information on the HDD is not acquired while the motor of the HDD is stopped, the HDD is not accessed and the motor is not operated. This structure can provide a HDD monitoring apparatus that prevents troubles induced during the motor is running.