Gas Detecting Module Planar Integration for Miniaturization
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Solution Overview
Problem
Conventional gas detecting modules are bulky and difficult to miniaturize due to complex and thick gas-guiding paths, making them unsuitable for portable or mobile devices, which limits their ability to monitor suspended particle concentrations in varying environmental conditions.
Innovation Solution
A gas detecting module design featuring a base with a piezoelectric actuator, driving circuit board, laser component, and particulate sensor, where the laser component is positioned on the driving circuit board and the piezoelectric actuator is separated, with a modular structure that includes a gas-inlet and gas-outlet groove, allowing for a thinner and more compact form factor, and optionally using a MEMS pump for efficient gas flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gas-guiding channel structure with multiple layers is used, then the gas detection function is achieved, but the thickness and volume of the gas detecting module increase
Solution Approach 1:
The patent transitions from a conventional multi-layer vertical gas-guiding structure to a planar integrated structure where the gas-guiding channel, laser component, and sensor are arranged in the same plane. This dimensional reorganization eliminates the need for multiple stacked layers, significantly reducing module thickness while maintaining detection functionality.
Solution Approach 2:
The patent merges the gas-guiding channel, laser component, and sensor into a single integrated base structure. Instead of separate components stacked in multiple layers, these elements are combined in a planar configuration, reducing overall module volume and thickness while achieving the same gas detection function.
2Ease of operation
If the gas-guiding path is designed in multiple layers, then gas flow control is achieved, but the device complexity and volume increase
Solution Approach 1:
The base is divided into distinct functional regions: a gas-inlet groove for gas entry, a gas-guiding channel for controlled flow, and a sensor region for detection. This segmentation allows each component to perform its function efficiently in a simplified planar layout, reducing structural complexity compared to multi-layer designs.
Solution Approach 2:
The gas flow control mechanism is reorganized from a vertical multi-layer structure to a horizontal planar structure. The gas-guiding channel extends laterally within the base plane, eliminating the need for vertical stacking and reducing overall device complexity while maintaining effective gas flow control.
3Measurement precision
If a conventional gas detecting module structure is used, then detection accuracy is maintained, but the module cannot be integrated into portable devices
Solution Approach 1:
The laser component and sensor are merged into the same base plane with the gas-guiding channel, creating a compact integrated structure. This planar integration maintains the optical path and detection functionality while dramatically reducing module volume, enabling integration into portable devices.
Solution Approach 2:
The detection system is reorganized from a vertical multi-layer structure to a horizontal planar structure. The laser beam path and sensor arrangement are optimized in the plane of the base, reducing the vertical thickness and overall volume while preserving detection accuracy for particle concentration measurement.
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 design significantly reduces the thickness and volume of the gas detecting module, enabling its integration into miniaturized portable devices, allowing for efficient detection of suspended particle concentrations in various environments, while maintaining detection accuracy and efficiency.
Implementation Method 1
a piezoelectric actuator (2), wherein the piezoelectric actuator (2) is separated from the laser component (4) through the structure of the base (1)
Implementation Method 2
the laser component (4) is positioned and disposed on the driving circuit board (3), electrically connected to the driving circuit board (3), and accommodated in the laser loading region (13)
Implementation Method 3
the particulate sensor (5) is positioned and disposed on the driving circuit board (3), electrically connected to the driving circuit board (3), and disposed at an orthogonal position where the gas-inlet groove (14) intersects the light beam path of the laser component (4) in the orthogonal direction, so that suspended particles passing through the gas-inlet groove (14) and irradiated by a projecting light beam emitted from the laser component (4) are detected
Data Source
AI summary
A gas detecting module is provided. The gas detecting module includes a base, a piezoelectric actuator, a driving circuit board, a laser component, a particulate sensor and an outer cover. A gas-guiding-component loading regain and a laser loading region are separated by the base. By the design of the gas flowing path, the driving circuit board covering the bottom surface of the base, and the outer cover covering the surfaces of the base, an inlet path is collaboratively defined by the gas inlet groove of the base and the driving circuit board, and an outlet path is collaboratively defined by a gas outlet groove of the base, the outer cover and the driving circuit board. Consequently, the thickness of the gas detecting module is drastically reduced.