Multi-Axis Gyro Sensor with Planar Oscillation Arms
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Solution Overview
Problem
Conventional gyro sensors can only detect angular velocity around the Z axis, requiring multiple sensors and increased size to detect velocities around multiple axes, leading to inefficiencies and bulkiness.
Innovation Solution
A gyro sensor design with a base and oscillation arms extending along multiple axes, allowing detection of angular velocities around intersecting axes through balanced oscillation components and piezoelectric materials for enhanced sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple gyro devices are provided to detect angular velocities around multiple axes, then the detection capability is improved, but the size of the apparatus increases
Solution Approach 1:
The patent merges multiple gyro detection functions into a single integrated device. The oscillating structure includes multiple oscillation arms (first, second, third, and fourth arms) that can detect angular velocities around different axes simultaneously, eliminating the need for multiple separate gyro devices while maintaining comprehensive detection capability.
Solution Approach 2:
The single gyro device is designed with multi-functional oscillation arms that can detect angular velocities around multiple axes (X-axis, Y-axis, and Z-axis). The first and second oscillation arms detect angular velocity around the Z-axis, while the third and fourth oscillation arms detect angular velocities around the X-axis and Y-axis, making the device universal for three-axis detection.
2Adaptability or versatility
If the sensor device is disposed in a vertical attitude to detect angular velocities around multiple axes, then the detection capability is improved, but the thickness of the sensor device increases
Solution Approach 1:
The patent transitions from a vertical configuration to a planar configuration where multiple oscillation arms extend in different directions within the same plane. The oscillation arms are arranged to detect angular velocities around multiple axes without requiring vertical stacking, thus reducing thickness while maintaining detection capability.
3Device complexity
If a conventional gyro device configuration is used, then the structure is simple, but only angular velocity around the Z axis can be detected
Solution Approach 1:
The gyro device is segmented into multiple oscillation arms (first, second, third, and fourth arms) with distinct detection functions. Each arm is configured to detect angular velocity around specific axes, allowing the device to maintain relative structural simplicity while achieving multi-axis detection capability through functional segmentation.
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
Enables reliable detection of angular velocities around multiple axes with improved precision and reduced size, using balanced oscillation components and piezoelectric materials for efficient signal extraction.
Implementation Method 1
When an angular velocity around a Z axis is applied to the gyro device in this state, a Coriolis force acts on the gyro device, and detectable oscillation in the X-axis direction is induced in the first and second detection oscillation arms.
Implementation Method 2
each of the first to fourth drive oscillation arms has an oscillation component along the first axis and an oscillation component along the third axis
Data Source
AI summary
A gyro sensor includes a base, a first connection arm and a second connection arm that extend from the base in opposite directions along an X axis, a first drive oscillation arm that extends from the first connection arm along a Y axis, a second drive oscillation arm that extends from the second connection arm along the Y axis, and a first detection oscillation arm and a second detection oscillation arm that extend from the base in opposite directions along the Y axis, and each of the first drive oscillation arm and the second drive oscillation arm has an oscillation component along the X axis and an oscillation component along a Z axis.