Ultrasonic Transceiver Partitioned Acoustic Matching Body
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Solution Overview
Problem
Conventional ultrasonic transceivers face challenges in accurately measuring the flow rate, flow velocity, and concentration of fluids at high temperatures and high humidity, as moisture entry due to corrosion can alter the acoustic impedance and degrade measurement performance.
Innovation Solution
The ultrasonic transceiver incorporates a piezoelectric body with an acoustic matching body that includes a top plate, bottom plate, and side wall defining a closed space, divided by perpendicular partition walls. This configuration prevents the spread of moisture and maintains the acoustic impedance, ensuring stable and accurate measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the acoustic matching body is made as a single closed space, then the structure is simple, but moisture can spread throughout the entire body causing density changes and measurement degradation
Solution Approach 1:
The acoustic matching body is divided into multiple closed spaces by partition walls, so that moisture entry into one space does not spread to other spaces. This segmentation maintains measurement stability while preventing catastrophic failure from moisture exposure.
2Ease of manufacture
If the acoustic matching body uses a uniform structure, then manufacturing is easy, but corrosion at any point can compromise the entire structure
Solution Approach 1:
The acoustic matching body is divided into multiple closed spaces by partition walls, so that moisture entry into one space does not spread to other spaces. This segmentation maintains measurement stability while preventing catastrophic failure from moisture exposure.
3Reliability
If partition walls are added to divide the closed space, then moisture spread is prevented, but the device complexity increases
Solution Approach 1:
The acoustic matching body is divided into multiple closed spaces by partition walls, so that moisture entry into one space does not spread to other spaces. This segmentation maintains measurement stability while preventing catastrophic failure from moisture exposure.
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 enables stable measurement of fluid properties with high accuracy over long periods, even in harsh environments of high temperature and high humidity, by preventing moisture-induced changes in acoustic impedance.
Implementation Method 1
an ultrasonic transceiver including a piezoelectric body and an acoustic matching body disposed in one face of the piezoelectric body
Implementation Method 2
an acoustic matching body...configured to emit an ultrasonic wave
Data Source
AI summary
The present disclosure provides an ultrasonic transceiver capable of stably measuring a fluid of high temperature and high humidity for a long period, and provides an ultrasonic flowmeter, an ultrasonic flow velocimeter, and an ultrasonic densitometer each including the ultrasonic transceiver. An ultrasonic transceiver (1) comprises a piezoelectric body (3) and an acoustic matching body (2) disposed in one face of the piezoelectric body (3), wherein the acoustic matching body (2) includes: a top plate, a bottom plate, and a side wall that define a closed space; and a perpendicular partition wall formed substantially perpendicular to the bottom plate and adhering to the top plate and the bottom plate, thereby dividing a closed space.