Disk Device Oscillator Adsorption Film Contamination Inspection
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Solution Overview
Problem
The complexity of wiring in disk devices, such as hard disk drives, is increased due to the electrical connection between controllers and sensors, which complicates the detection of substances within the internal space, and existing solutions do not effectively address the need for efficient contamination inspection without interfering with the electric circuit.
Innovation Solution
A disk device design that includes a housing with a magnetic disk, a circuit board outside the internal space, and oscillators with adsorption films exposed within the space to adsorb substances, allowing for contamination inspection without being electrically connected to the main electric circuit, thereby simplifying the wiring and enabling effective detection of contaminants like outgas and siloxane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is electrically connected to the controller to detect substances in the internal space, then the detection capability is improved, but the wiring complexity of the electric circuit increases
Solution Approach 1:
The patent extracts the sensing function from the electrical circuit system by using oscillators with adsorption films that detect substances through physical adsorption and frequency change, eliminating the need for complex wiring between sensors and controllers while maintaining detection capability
Solution Approach 2:
The patent replaces the electrical sensing system with a mechanical oscillation-based sensing system. The oscillators mechanically detect substance adsorption through frequency changes, substituting electrical connections with a mechanical detection mechanism that requires minimal wiring
2Adaptability or versatility
If multiple sensors are installed in the internal space to detect different substances, then the detection coverage is improved, but the device complexity and space occupation increase
Solution Approach 1:
The patent implements multi-functionality by using multiple oscillators with different adsorption film materials, where each oscillator detects specific substances (outgas, siloxane, moisture) through selective adsorption, allowing a single sensing system to perform multiple detection functions without requiring separate sensor systems for each substance
3Measurement precision
If sensors are placed inside the internal space to detect contaminants, then the detection accuracy is improved, but the risk of electrical interference and circuit complexity increases
Solution Approach 1:
The patent extracts the sensing elements (oscillators with adsorption films) from the electrical circuit environment while placing them inside the internal space, allowing direct contamination detection without exposure to electrical interference, thus maintaining detection accuracy while eliminating electrical interference risks
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for the efficient inspection of internal space contamination by varying the oscillation frequency of the oscillators, determining the presence of outgas and siloxane, and avoids complicating the electric circuit wiring, facilitating easier maintenance and fault analysis.
Implementation Method 1
an adsorption film is formed on the oscillator, exposed in the internal space, and configured to adsorb a substance
Data Source
AI summary
A disk device according to one embodiment includes a housing, a magnetic disk, a circuit board, a first oscillator, and a first adsorption film. The housing is provided with an internal space. The magnetic disk is disposed in the internal space. The circuit board is attached to the housing outside the internal space. The first oscillator is disposed away from an electric circuit in the internal space. The electric circuit is electrically connected to the circuit board. The first adsorption film is formed on the first oscillator, exposed to the internal space, and configured to adsorb a first substance.