Portable Air Quality Sensor With Motion Validation
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Solution Overview
Problem
Existing air quality analysis systems have low resolution and provide air quality information that is not representative of the user's surrounding environment due to the limited placement of air quality measurement devices.
Innovation Solution
A portable air quality measurement apparatus equipped with first, second, and third sensor circuits to detect air quality, movement, and environmental information, respectively, which communicates with an external server to validate and provide accurate air quality data, displaying relevant information when the detected data is valid or retrieving data from the server when it is not.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If air quality measurement devices are placed in fixed locations such as building roofs, then the system structure is simple and easy to maintain, but the measurement resolution is low and the data does not represent the user's surrounding environment
Solution Approach 1:
The patent divides the air quality monitoring system into multiple portable measurement devices distributed across different locations, each independently measuring local air quality. This segmentation allows high-resolution spatial measurements without requiring a single complex centralized system, as each portable device remains relatively simple in structure.
Solution Approach 2:
The patent transitions from a single fixed measurement point (zero-dimensional) to multiple distributed measurement points (spatial distribution across two or three dimensions). This dimensional expansion enables comprehensive coverage of the user's surrounding environment, providing high-resolution air quality data across different locations simultaneously.
2Measurement precision
If portable air quality measurement devices are used to increase measurement resolution, then the air quality data better represents the user's surrounding environment, but the device may move causing measurement validity to decrease
Solution Approach 1:
The patent incorporates sensors that detect device movement and environmental conditions, providing feedback to the processor. When movement exceeds a threshold or environmental conditions indicate the device is not in the intended location, the system identifies the air quality data as invalid and excludes it from results, maintaining measurement reliability despite device portability.
Solution Approach 2:
The patent dynamically adjusts the validity assessment of measurements based on real-time device state. The system transitions between valid and invalid measurement states according to movement detection and environmental sensor readings, allowing the portable device to maintain reliability adaptively rather than being statically fixed.
3Reliability
If multiple sensors are added to validate measurement conditions, then the measurement reliability improves, but the device complexity increases
Solution Approach 1:
The patent employs sensors with multiple functions: acceleration sensors detect both device movement and orientation, while environmental sensors monitor temperature, humidity, and pressure conditions that affect both measurement validity and general environmental awareness. This multi-functionality reduces the need for dedicated single-purpose sensors, controlling overall device complexity.
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 apparatus effectively increases the resolution of air quality information around the user by validating and providing reliable air quality data, ensuring accuracy and relevance to the user's environment, even when the device is in motion or in environments where direct measurement is challenging.
Implementation Method 1
a first sensor circuit configured to sense an external air quality
Implementation Method 2
a second sensor circuit configured to sense a movement of the apparatus
Implementation Method 3
a third sensor circuit configured to sense an environment of the apparatus
Data Source
AI summary
Disclosed is an apparatus for measuring air quality, the apparatus comprises a first sensor circuit; a second sensor circuit; a third sensor circuit; a communication circuit configured to communicate with an external server; a display; a processor; and a memory, wherein the memory stores instructions that, when executed, cause the processor to: detect air quality related information by using the first sensor circuit, obtain at least one of movement information detected by using the second sensor circuit or adjacent environment information detected by using the third sensor circuit while the air quality related information is detected, determine validity of the air quality related information from using the first sensor circuit based on the adjacent environment information or the movement information, display the air quality related information from using the first sensor circuit or air quality related information received from the external server based on the determined validity.