Sensor Unit Layout for Thermal Distortion Reduction
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Solution Overview
Problem
Miniaturization of sensor units leads to increased stress due to thermal distortion and heat generation, affecting detection accuracy and reliability.
Innovation Solution
The sensor unit design includes a base with sensors arranged on orthogonal axes passing through the center, with equal distances and symmetrical placement to minimize distortion, using magneto-resistive effect devices for improved detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If sensors are miniaturized and densely arranged on the base, then the sensor unit size is reduced and integration is improved, but thermal stress and distortion increase affecting detection accuracy
Solution Approach 1:
The patent applies asymmetry by strategically positioning sensors at different distances from the center of the base along radial directions. Instead of uniform symmetric arrangement, sensors are placed at optimized positions where the base experiences minimal thermal distortion, creating an asymmetric layout that compensates for thermal effects and maintains detection accuracy in miniaturized configurations
Solution Approach 2:
The patent changes the spatial arrangement parameters of sensors by defining specific radial distances and angular positions relative to the base center. This parameter optimization ensures sensors are located in regions with minimal thermal stress while maintaining compact size, directly addressing the contradiction between miniaturization and detection accuracy
2Adaptability or versatility
If multiple sensors are arranged on the base, then detection coverage is improved, but stress from base distortion increases affecting sensor output
Solution Approach 1:
The patent applies local quality by identifying and utilizing specific regions on the base where thermal distortion is minimal. Sensors are selectively positioned in these favorable local areas rather than uniform distribution, allowing multiple sensors to maintain detection coverage while each sensor operates in a low-stress environment
Solution Approach 2:
The patent transitions from two-dimensional planar arrangement to three-dimensional spatial positioning by considering radial distances and angular positions from the base center. This dimensional approach allows sensors to be arranged in optimal positions that minimize thermal stress while maintaining comprehensive detection coverage
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
Stabilizes sensor outputs by reducing stress from thermal distortion, enhancing detection accuracy and reliability.
Implementation Method 1
using magneto-resistive effect devices for improved detection accuracy
Data Source
AI summary
This sensor unit includes a base having a substantially-rectangular planar shape including a first side and second side that are substantially orthogonal to each other, and a plurality of first sensors provided on the base and arranged on a first axis. The first axis is substantially parallel to the first side and passes through a center position of the base.