Attachable Piezoelectric Sensor Pod for Arterial Vortex Detection
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Solution Overview
Problem
Piezoelectric sensors used for detecting vortices in the arterial system face challenges due to ambient noise interference, which overwhelms the faint sounds needed for accurate detection and measurement of stenosis, leading to inaccurate data.
Innovation Solution
A sensor pod assembly with a piezoelectric unit, electronic circuitry, and a gel pad with a sound attenuating material, designed for direct attachment to the skin, which reduces background noise through a sound attenuating cap and O-rings, and wireless data transmission to minimize noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If piezoelectric sensors are used for detecting vortices in the arterial system, then detection capability is provided, but ambient noise interference overwhelms the faint sounds needed for accurate detection
Solution Approach 1:
A gel pad is introduced as an intermediary medium between the piezoelectric sensor and the skin. The gel pad enhances acoustic coupling and transmits the faint vortex sounds from the artery to the sensor while filtering out higher frequency ambient noise, thereby improving signal-to-noise ratio and detection accuracy
Solution Approach 2:
The patent extracts and removes harmful ambient noise frequencies from the detection spectrum by using the gel pad's acoustic properties to attenuate high-frequency noise while preserving the low-frequency vortex sounds, effectively separating the desired signal from the noise
2Measurement precision
If sound attenuating material is added to reduce background noise, then signal-to-noise ratio is enhanced, but device complexity increases
Solution Approach 1:
Sound attenuating material is applied locally only at the acoustic interface between the gel pad and the sensor housing, rather than throughout the entire device. This targeted approach provides noise reduction where it is most needed while minimizing the addition of complex components
Solution Approach 2:
The patent uses composite material construction for the sensor housing, combining materials with different acoustic properties - rigid materials for structural integrity and sound attenuation materials for noise reduction - creating an integrated solution that reduces noise without significantly increasing device complexity
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
The solution effectively reduces ambient noise, enhancing the signal-to-noise ratio and allowing for accurate detection and measurement of vortices in the arterial system, improving the determination of stenosis.
Implementation Method 1
the piezoelectric unit is positioned on the O-ring... a piezoelectric device... suitable to electronically run the sensor pod
Implementation Method 2
A sensor pod assembly with a piezoelectric unit, electronic circuitry, and a gel pad with a sound attenuating material, designed for direct attachment to the skin, which reduces background noise through a sound attenuating cap and O-rings
Data Source
AI summary
A sensor pod assembly comprising a gel pad, a gel pad cap, a piezoelectric sensor, a base plate, a base plate support, a wiring harness, a battery, a noise attenuating backing, and a charging component; said gel pad comprising a top and bottom, said bottom having a flat bottom and a concave recess; said flat bottom acoustically contacting said piezoelectric sensor; said piezoelectric sensor secured to a first side of said base plate support, and a second side of said base plate support secured to said base plate, a wiring harness and a battery connected to said base plate, and a charging component having exposed annular rings on the exterior side of said sensor pod assembly; a noise attenuating backing compressing the charging component against the base plate; and a gel pad cap having an outer face and an inner face, said inner face in contact with said base plate support.