Physical Quantity Sensor With Rewritable Resonance Vibration Control
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Solution Overview
Problem
Existing technologies face difficulties in adapting actuator control to varying resonance characteristics of electronic devices due to changes in size, material, and installation environments, making it challenging to effectively damp vibrations.
Innovation Solution
A physical quantity sensor with a sensor element, memory, signal output circuit, and interface circuit is integrated into an electronic device, allowing for measurement and adjustment of resonance characteristics to generate actuator drive signals that reduce vibrations based on detected physical quantities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed control content is used for the actuator, then the device structure is simple, but the vibration damping effectiveness deteriorates when resonance characteristics change
Solution Approach 1:
The patent implements dynamic adaptability by allowing the resonance characteristic storage content to be rewritten based on detected resonance characteristics. The control content is no longer fixed but dynamically adjusts to match actual device resonance properties, resolving the contradiction between simple structure and effective vibration damping across varying conditions
Solution Approach 2:
The patent changes the parameter of resonance characteristic storage content based on detected resonance characteristics. By rewriting the storage content with updated resonance parameters, the system adapts to changing device conditions while maintaining a relatively simple overall structure, thus improving vibration damping effectiveness without excessive complexity
2Adaptability or versatility
If resonance characteristic data is rewritten based on external signals, then adaptability to installation environments improves, but device complexity increases
Solution Approach 1:
The patent implements feedback by using detected resonance characteristics to rewrite the stored resonance characteristic data. This feedback loop enables the system to adapt to actual installation environments by continuously monitoring and adjusting based on real detected properties, improving adaptability while keeping the interface circuit functionality manageable
Solution Approach 2:
The system performs self-adjustment by automatically detecting resonance characteristics and rewriting its own storage content without requiring external reconfiguration. This self-service capability enhances adaptability to different installation environments while minimizing the complexity burden on external interfaces
Data Source
AI summary
Provided is a physical quantity sensor attached to an electronic device provided with an actuator. The physical quantity sensor includes: a sensor element configured to output a detection signal corresponding to a physical quantity; a memory configured to store a resonance characteristic of the electronic device; a signal output circuit configured to output an actuator drive signal for driving the actuator to reduce a vibration corresponding to the resonance characteristic included in vibrations of the electronic device indicated by the detection signal; and an interface circuit configured to rewrite the resonance characteristic stored in the memory according to an external signal.