Gyro Sensor Movable Part Asymmetry for Rotation Direction Detection
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Solution Overview
Problem
Current sensors, such as gyro sensors, face challenges in achieving high detection accuracy due to vibration state differences caused by rotation direction differences, leading to errors in displacement detection.
Innovation Solution
The sensor design incorporates a movable part with bent structure members and multiple mirror planes, which are symmetrically arranged around a central supporter, allowing for precise detection of rotational forces by distinguishing between clockwise and counterclockwise rotational vibrations through electrodes configured to detect vibrations along specific directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional sensor structure is used, then the device complexity is low, but the measurement precision deteriorates due to vibration state differences caused by rotation direction
Solution Approach 1:
The patent applies asymmetry by introducing mirror planes to the movable part structure. The movable part is designed with specific asymmetric configurations relative to the supporter, creating mirror plane symmetry that enables differentiation between clockwise and counterclockwise rotational vibrations. This asymmetric design allows the sensor to detect rotation direction accurately while maintaining structural balance
Solution Approach 2:
The patent segments the movable part into multiple symmetric components arranged around the supporter. By dividing the structure into segmented elements with specific mirror plane relationships, the sensor can independently detect vibration states in different directions and process the signals to eliminate rotation direction errors
2Stability of the object's composition
If the movable part is made symmetric around the supporter, then the stability improves, but the measurement precision deteriorates due to inability to distinguish rotation directions
Solution Approach 1:
The patent resolves this contradiction by introducing mirror plane symmetry to the movable part while maintaining rotational symmetry. The asymmetric configuration relative to the supporter creates different vibration characteristics for clockwise and counterclockwise rotations, enabling direction detection while preserving overall structural stability through balanced symmetric arrangement
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 enhances detection accuracy by suppressing vibration state differences due to rotation direction, enabling more precise displacement detection and improved responsiveness to external forces, thus increasing overall sensor accuracy.
Implementation Method 1
The movable member is capable of vibrating
Data Source
AI summary
According to one embodiment, a sensor includes a sensor part. The sensor part includes a supporter and a movable part. The movable part includes a movable member located around the supporter in a first plane, and a plurality of structure members located between the supporter and the movable member. The structure members have bent shapes. The structure members connect the movable member with the supporter. The movable member is capable of vibrating. The movable part has the supporter as a center of rotational symmetry. The movable part has a plurality of mirror planes. The mirror planes pass through the center of the rotational symmetry and cross the first plane.