Portable Gas Detection Module with Piezoelectric Pump
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Solution Overview
Problem
Conventional air quality monitoring stations are fixed and unable to provide real-time detection of suspension particle concentrations due to unstable gas flows, posing a risk to human health from poor air quality, especially with increasing PM2.5 levels, and there is a need for a portable, thin gas detection module to monitor air quality anywhere.
Innovation Solution
An external gas detecting device with a casing, gas detection module, and external connector that allows real-time transmission of air quality data to external devices, incorporating a piezoelectric actuator and MEMS pump for efficient gas handling and a laser component for particle detection, ensuring portability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional air quality monitoring stations are used, then air quality detection is possible, but the devices are fixed and cannot provide real-time detection due to unstable gas flows
Solution Approach 1:
The patent transforms the fixed monitoring station into a portable device that can be carried by users. The gas detection module is integrated into a handheld device with a pump system that actively draws gas through the sensor, enabling reliable detection regardless of ambient air flow conditions. This dynamic design allows the device to adapt to various environments and provide real-time detection anywhere.
Solution Approach 2:
The patent incorporates a pump system (pneumatic mechanism) to actively draw ambient gas through the detection module. This overcomes the problem of unstable natural air flow by creating controlled gas flow through the sensor, ensuring reliable detection. The pump-driven gas flow system enables the device to operate independently of environmental air movement conditions.
2Weight of moving object
If portable devices are made light and thin, then portability is improved, but integrating a gas detection module becomes difficult
Solution Approach 1:
The patent integrates the gas detection module, pump system, battery, and control circuits into a compact nested structure. The detection module is housed within the portable device body, with components arranged in a space-efficient manner. The gas flow path is designed to navigate through the compact housing, allowing all necessary components to be nested within a thin, portable form factor.
Solution Approach 2:
The patent employs a planar or layered arrangement of components to reduce the device thickness. The gas flow path, electrical circuits, and sensor elements are organized in layers or along the surface area rather than requiring significant vertical space. This dimensional reorganization allows the detection module to be integrated into a thin, portable device.
3Productivity
If real-time gas detection is implemented, then air quality monitoring is improved, but the device requires external power supply and connectivity
Solution Approach 1:
The patent designs the portable device with multi-functional capabilities. The external connector serves multiple purposes: charging the internal battery, establishing data communication with external devices (smartphones, computers), and potentially providing additional power. This universal connector reduces the need for separate charging ports and communication interfaces, simplifying the overall device design while enabling real-time detection and data transmission.
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
Enables real-time detection and transmission of air quality information, providing users with immediate alerts and facilitating avoidance of hazardous gas exposure, while meeting the requirement of a lightweight, miniaturized structure for easy carrying.
Implementation Method 1
incorporating a piezoelectric actuator and MEMS pump for efficient gas handling
Implementation Method 2
a laser component for particle detection
Implementation Method 3
a laser component for particle detection
Data Source
AI summary
An external gas detecting device is provided. The external gas detecting device includes a casing, a gas detection module and an external connector. The gas detection module is disposed in the casing and detects a gas transported into the casing to generate a gas information. The external connector is connected to and disposed on the casing. The external connector is used to be connected to an external power supply so as to enable the gas detection module, and is used to transmit the gas information so as to achieve the outward transmission of the gas information.