Chemical Sensor Water-Absorbing Member for Mist Noise Reduction
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Solution Overview
Problem
Existing chemical sensor devices face challenges in detecting gas-phase chemical substances in the liquid phase with low sensitivity and high noise due to droplet condensation on the sensor surface, which affects detection accuracy and efficiency.
Innovation Solution
A chemical sensor device with a substrate-mounted sensor element and a first water-absorbing member around the sensor surface, exposed to mist, which incorporates sample atmosphere and reduces noise by absorbing droplets, enhancing detection sensitivity through increased surface area and efficient incorporation of target substances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor surface is exposed to mist to increase detection sensitivity, then the incorporation efficiency of target substances is improved, but droplet condensation occurs on the sensor surface causing noise and reduced detection accuracy
Solution Approach 1:
A water-absorbing member is introduced as an intermediary component between the mist supply and sensor surface. This mediator absorbs excess water from the mist before it reaches the sensor, allowing the sensor to detect target substances incorporated in the mist while preventing droplet condensation noise
Solution Approach 2:
The water-absorbing member is selectively positioned around the sensor surface where mist contact occurs, creating a localized water-absorbing zone. This local intervention maintains mist exposure for detection while preventing harmful droplet accumulation specifically at the sensor surface
2Productivity
If the sensor surface area is increased to improve detection efficiency, then the incorporation of target substances is enhanced, but the sensor becomes more susceptible to droplet condensation and noise
Solution Approach 1:
The water-absorbing member acts as a protective intermediary that surrounds the sensor surface, enabling the sensor to maintain a larger effective detection area while the water-absorbing member prevents droplet condensation on the sensor surface itself
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 increases detection sensitivity and reduces noise by exposing the sensor surface to mist, allowing efficient incorporation of target substances and preventing droplet condensation on the sensor surface, thereby improving detection accuracy and reliability.
Implementation Method 1
a first water-absorbing member provided around the sensor surface on the substrate and including an opening that exposes the sensor surface
Data Source
AI summary
A chemical sensor device includes a substrate; a chemical sensor element formed on the substrate and including a sensor surface exposed to mist; and a first water-absorbing member provided around the sensor surface on the substrate and including an opening that exposes the sensor surface.