Multi-Axial Inertial Force Sensor Pre-Assembly Alignment
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Solution Overview
Problem
Conventional multi-axial inertial force sensors face challenges in maintaining orthogonality of detection axes due to relative positioning errors between blocks, requiring extensive inspection steps before and after assembly, which increases man-hours and complexity.
Innovation Solution
A manufacturing method for multi-axial inertial force sensors that includes a mounting material with inclined blocks, each equipped with sensors, where the blocks are positioned using a tray system and turntable to ensure accurate relative alignment and sensitivity inspection before assembly, reducing the need for post-assembly inspections and enhancing axis orthogonality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If blocks are disposed away from each other on the substrate, then each sensor can be individually positioned, but relative positioning errors occur between blocks causing loss of axis orthogonality
Solution Approach 1:
The patent applies preliminary action by performing sensitivity inspection for each sensor while the blocks are still separate and accessible before final assembly onto the substrate. This allows inspection to be completed in advance, eliminating the need for complex post-assembly inspection processes and ensuring axis orthogonality is maintained.
2Reliability
If sensitivity inspection is performed after assembly, then complete sensor system can be tested, but extensive inspection steps and man-hours are required
Solution Approach 1:
The patent performs sensitivity inspection as a preliminary action before final assembly of the blocks onto the substrate. Each block is inspected individually while still accessible, allowing sensitivity verification to be completed in advance. This eliminates the need for time-consuming post-assembly inspection steps and reduces overall inspection man-hours while maintaining sensor reliability.
Data Source
AI summary
Before a pedestal is assembled, a sensitivity is inspected for each of sensors disposed in blocks respectively. In an inspection step, the blocks in which the sensors are disposed respectively are prepared. The blocks are fitted into main-axis groove portions of a main-axis tray, and the blocks are brought in contact with main-axis positioning surfaces of the main-axis groove portions to dispose the thickness direction of the main-axis tray and the main-axes of the sensors in parallel. The main-axis tray is arranged on a turntable such that a central axis of rotation of the turntable and the thickness direction of the main-axis tray are in parallel and that the central axis of rotation of the turntable and the main-axes of the sensors are in parallel. The turntable is made pivoting or swinging to inspect the sensitivities, in the main-axes, of the of sensors.