Rectangular Sensor Unit Layout for Thermal Distortion Control
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Solution Overview
Problem
Miniaturization of sensor units leads to increased stress on sensors due to base distortion from environmental temperature changes and integrated circuit heat, affecting detection accuracy and reliability.
Innovation Solution
The sensor units are designed with sensors arranged on a base in a manner that minimizes distortion, such as parallel alignment to base sides and equal spacing, using a rectangular planar shape with coincident center positions, and incorporating magneto-resistive effect devices to stabilize sensor outputs.
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 stress from base distortion due to temperature changes and heat generation increases, causing detection accuracy to deteriorate
Solution Approach 1:
The patent applies local quality by strategically positioning sensors at specific locations on the base where thermal stress and distortion are minimized. The sensor arrangement considers local temperature distribution and stress patterns, placing sensors in regions with more stable mechanical properties despite overall base distortion caused by heat generation from integrated circuits and environmental temperature changes.
Solution Approach 2:
The patent implements preliminary action by pre-compensating for thermal stress effects through careful sensor placement design. The sensor positions are predetermined based on thermal analysis and stress distribution models, allowing the system to maintain detection accuracy before temperature changes occur by selecting locations that naturally experience less distortion under thermal loading.
2Area of stationary object
If multiple sensors are arranged closely together on the base, then the sensor unit achieves compact size, but the base distortion from heat generation and temperature changes causes stress that reduces reliability
Solution Approach 1:
The patent applies local quality by identifying and utilizing specific regions on the base with favorable thermal and mechanical characteristics. Sensors are placed in locations where the local stress state is more favorable, such as areas with better heat dissipation or lower thermal gradient effects, thereby maintaining reliable sensor operation despite the compact overall size and proximity to heat-generating integrated circuits.
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 stabilizes sensor outputs, reducing orthogonality shifts and improving detection accuracy, enhancing reliability by mitigating stress from base distortions and temperature changes.
Implementation Method 1
incorporating magneto-resistive effect devices to stabilize sensor outputs
Data Source
AI summary
This sensor unit includes a base having a substantially-rectangular planar shape including a first side and a 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.