Actuating-Sensing Module With Guided Airflow for Faster Gas Detection
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Solution Overview
Problem
Existing portable electronic devices face challenges in accurately monitoring environmental gases due to unstable and non-uniform airflow, leading to low sensitivity and prolonged response times for sensors.
Innovation Solution
An actuating and sensing module integrating a piezoelectric pump as an actuating device to stabilize and uniformly deliver airflow to sensors, enhancing monitoring precision and reducing response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If natural convection is used to transfer airflow to the sensor, then the device structure remains simple, but the monitoring precision and response time deteriorate
Solution Approach 1:
A guiding channel is introduced as an intermediary component to transfer fluid between the actuating device and sensor. This channel ensures uniform and stable fluid delivery to the sensor, improving measurement precision while maintaining a relatively simple overall device structure through integrated design.
Solution Approach 2:
The patent employs fluid dynamic principles by using a guiding channel to direct fluid flow and an actuating device to generate controlled airflow. This pneumatic approach ensures stable and uniform fluid delivery to the sensor, significantly improving monitoring precision compared to natural convection.
2Loss of time
If natural convection is used for airflow transfer, then the device structure remains simple, but the response time increases
Solution Approach 1:
The guiding channel acts as a mediator that accelerates fluid delivery to the sensor through controlled flow paths, reducing the time required for the sensor to detect environmental changes while keeping the device structure integrated and compact.
Solution Approach 2:
The actuating device performs preliminary action by generating controlled airflow before the sensor needs to detect, ensuring that fluid is delivered quickly and uniformly to the sensor surface, thereby reducing response time.
3Stability of the object's composition
If natural convection transfers fluid to the sensor, then no additional components are needed, but the fluid delivery becomes unstable and non-uniform
Solution Approach 1:
The guiding channel serves as a stable intermediary that channels fluid flow in a controlled and uniform manner to the sensor, ensuring consistent delivery conditions that improve measurement stability while adding only one integrated component to the device.
Solution Approach 2:
The actuating device changes the fluid delivery parameters by generating controlled airflow with specific velocity and direction, transforming the unstable natural convection into a stable, uniform flow that reliably delivers fluid to the sensor surface.
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 module ensures stable and uniform fluid delivery to sensors, improving monitoring accuracy and response speed, making real-time environmental monitoring more effective.
Implementation Method 1
When the at least one actuating device is enabled, a fluid is transferred to the at least one sensor through the at least one guiding channel, so that the fluid is sensed by the at least one sensor.
Implementation Method 2
the fluid is sensed by the at least one sensor
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
An actuating and sensing module (1) includes a substrate (11), at least one sensor (12) and at least one actuating device (13). The at least one sensor (12) is disposed on the substrate (11). The at least one actuating device (13) is disposed on the substrate (11), and has at least one guiding channel (14) between the actuating device (13) and the substrate (11). The at least one guiding channel (14) is disposed on one side of the at least one sensor (12). When the at least one actuating device (13) is enabled, a fluid is transferred to the at least one sensor (12) through the at least one guiding channel (14), so that the fluid is sensed by the at least one sensor (12).