Calibrated Mobile Gas Sensor Using Segmented Calibration
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Solution Overview
Problem
Current mobile and wearable devices cannot be calibrated for accurate gas measurements, limiting their applications and market potential to only relative measurements, which are insufficient for applications requiring quantified measurements of gases like carcinogens, safety gases, and health gases.
Innovation Solution
A mobile gas monitor system that includes a gas sensor and a mobile device capable of executing instructions for calibration, allowing for the provision of calibrated gas concentrations by initializing a calibration process, receiving data from the sensor, and providing calibration parameters based on that data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gas sensors are deployed in mobile phones or wearable devices, then portability and accessibility are improved, but measurement precision deteriorates due to inability to calibrate
Solution Approach 1:
The calibration process is segmented into multiple discrete steps: introducing known gas concentrations sequentially, recording sensor responses at each step, and processing data through algorithms. This breaks down the complex calibration task into manageable segments that can be executed in a mobile device environment.
Solution Approach 2:
The system performs preliminary calibration actions by introducing known gas concentrations before actual measurements are taken. This preliminary calibration establishes baseline data and calibration parameters that enable subsequent accurate measurements in the portable device.
2Measurement precision
If calibration functionality is added to mobile gas sensors, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The mobile device serves multiple functions: it acts as both the sensor platform and the calibration system. The device executes calibration algorithms, processes sensor data, and provides user interface functionality, eliminating the need for separate dedicated calibration equipment and reducing overall system complexity.
Solution Approach 2:
The calibration system is self-contained within the mobile device, performing calibration autonomously without requiring external laboratory equipment or specialized facilities. The device introduces calibration gases, records responses, and computes calibration parameters independently.
Data Source
AI summary
A mobile gas monitor is presented. In accordance with some embodiments, a mobile gas monitor includes a gas sensor; a mobile device coupled to the gas sensor, the mobile device executing instructions to: read data from the gas sensor; provide calibration; and provide calibrated concentrations based on the data from the gas sensor.