Inertial Sensor Block Assembly for Precise 3-Axis Positioning
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Solution Overview
Problem
Existing inertial force sensors face challenges in maintaining precise relative positions between multiple sensors, leading to decreased detection accuracy due to displacement from designed values.
Innovation Solution
The inertial force sensor employs a base with inclined blocks and single-axis sensors connected via a connector, aligning blocks along specific directions to maintain precise relative positions, using connectors with recesses and projections for accurate positioning, and optionally metal pads for firm fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If three blocks are fixed on a circuit board, then the sensor module can be assembled, but the relative positions between sensors cannot be positioned precisely
Solution Approach 1:
A connector is introduced as an intermediary component between the blocks and the circuit board. The connector includes positioning protrusions that fit into positioning recesses on the blocks, enabling precise relative positioning without complex direct fixation structures. This mediator simplifies the overall assembly while achieving high positioning precision.
2Adaptability or versatility
If multiple single-axis inertial force sensors are arranged on inclined surfaces, then 3-axis angular velocity detection is enabled, but the relative position control becomes more difficult
Solution Approach 1:
The sensor module is segmented into multiple independent blocks, each carrying a single-axis inertial force sensor on its inclined surface. Each block can be manufactured and positioned independently, with the connector ensuring precise relative positioning. This segmentation allows versatile 3-axis detection capability while simplifying the control of relative positions through modular assembly.
Data Source
AI summary
An inertial force sensor may comprise: a base; a first block including an inclined surface that is inclined with respect to a base surface; a second block including an inclined surface that is inclined with respect to the base surface; a third block including an inclined surface that is inclined with respect to the base surface; a fourth block including an inclined surface that is inclined with respect to the base surface; and a connector configured to physically connect the first, second, third, and fourth blocks. In this inertial force sensor, the first and second blocks are aligned along a first direction parallel to the base surface with their inclined surfaces both facing inward or outward, and the third and fourth blocks are aligned along a second direction parallel to the base surface and orthogonal to the first direction with their inclined surfaces both facing inward or outward.