Directional Acoustic Sensor With Intersecting Resonators for Sensitivity
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Solution Overview
Problem
Existing directional acoustic sensors face challenges in maintaining sensitivity due to reduced acoustic resistance caused by through-hole portions in resonator arrangements, leading to decreased sensitivity and increased device size.
Innovation Solution
The directional acoustic sensor employs a resonator arrangement where resonators intersect at their ends, minimizing through-hole portions and reducing acoustic resistance, while maintaining resonant frequencies and device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If resonators are arranged with through-hole portions to reduce device size, then device size is reduced, but acoustic resistance decreases and sensitivity is reduced
Solution Approach 1:
The resonators are arranged in an intersecting pattern where they cross each other in different orientations, utilizing two-dimensional spatial arrangement to minimize through-hole portions while maintaining structural integrity and acoustic resistance
Solution Approach 2:
Multiple resonators are merged at their intersections to form a unified structure where the resonators share common space, reducing the overall device volume while maintaining the necessary acoustic pathways
2Reliability
If resonators are arranged to maintain acoustic resistance, then sensitivity is improved, but device size increases
Solution Approach 1:
The intersecting arrangement allows resonators to extend in multiple directions from a common intersection point, effectively utilizing three-dimensional space to maintain acoustic pathways without increasing the device footprint
3Reliability
If through-hole portions are minimized in resonator arrangement, then acoustic resistance is reduced and sensitivity is improved, but device complexity increases
Solution Approach 1:
The resonators are arranged with asymmetric intersecting patterns where each resonator has a unique orientation and intersection point, allowing optimization of acoustic pathways while maintaining manufacturing feasibility through standardized resonator components
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 enhances sensitivity and reduces device size by minimizing acoustic resistance, improving acoustic sound detection capabilities and overall performance.
Implementation Method 1
a directional acoustic sensor for detecting an acoustic signal by converting a mechanical motion caused by a pressure difference into an electrical signal has been developed
Implementation Method 2
a resonator that reacts to a pressure difference in an acoustic sound
Data Source
AI summary
A directional acoustic sensor includes: a support including a first support portion and a second support portion that are separated from each other and face each other; a plurality of first resonators extending in a length direction thereof from the first support portion of the support; and a plurality of second resonators extending in the length direction thereof from the second support portion of the support and facing the plurality of first resonators, wherein each first resonator of the plurality of first resonators has a first end, wherein each second resonator of the plurality of second resonators has a second end, and wherein, in a first resonator arrangement of a region where the plurality of first resonators and the plurality of second resonators face each other, the first ends of the plurality of first resonators and the second ends of the plurality of second resonators form an intersecting structure.