Portable Gas Analyzer Modules for Calibration Data Traceability
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Solution Overview
Problem
Existing hand-portable gas analyzers lack the ability to track and ensure the accuracy of sensor data, as users are unaware of which sensors are within or outside of their calibration ranges, leading to potential inaccuracies in data generation and storage.
Innovation Solution
A gas analyzer with a unique module identifier system for each sensor module, allowing for discrete tracking and association of parameter data with specific modules, enabling accurate data integrity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensor modules are used in hand-portable gas analyzers, then gas monitoring capability is improved, but data accuracy tracking becomes difficult
Solution Approach 1:
The system divides the sensor array into individually identifiable modules, each with its own unique identifier. This segmentation allows the controller to track each sensor module's calibration status and operational history independently, resolving the contradiction by enabling accurate data tracking while maintaining the versatility of multi-sensor gas monitoring.
2Measurement precision
If multiple sensor modules are used, then measurement capability is improved, but calibration status tracking becomes complex
Solution Approach 1:
The controller continuously monitors and tracks the calibration status of each sensor module through feedback from unique identifiers. This feedback mechanism automatically updates the system's understanding of which sensors are calibrated and their expiration dates, simplifying the tracking complexity while maintaining precise measurement capabilities across multiple sensors.
3Duration of action of moving object
If sensor data is stored for long-term analysis, then data utility is improved, but verification of data integrity becomes difficult
Solution Approach 1:
The system performs preliminary action by associating unique module identifiers with sensor data at the time of collection. This preliminary tagging ensures that even after long-term storage, the data can be verified for integrity by checking the calibration status of the identified modules, thus maintaining data utility while enabling future verification.
Data Source
AI summary
A portable gas analyzer includes multiple docking stations connected to a pneumatic flowpath through the gas analyzer. Modules are removably mounted to the docking stations. Some modules can be mounted at any one of the docking stations. The modules can include gas sensors and a microcontroller configured to generate data based on signals generated by the gas sensors. The modules are configured to simultaneously form each of electrical, mechanical, and pneumatic connections with the gas analyzer when mounted to the docking station.