Cumulative Exposure Assessment via Sensor Segmentation
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Solution Overview
Problem
Conventional detectors only measure instantaneous levels of hazardous substances in buildings, failing to quantify cumulative exposure, which is crucial for assessing health risks to occupants.
Innovation Solution
A computing system that collects data from stationary gas sensors and occupancy sensors to determine cumulative exposure by integrating local gas concentrations with occupancy data, enabling notifications and predefined actions based on this exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional detectors measure only instantaneous levels of hazardous substances, then the measurement is simple and provides immediate data, but the cumulative exposure assessment is insufficient and health risk evaluation is inadequate
Solution Approach 1:
The system segments the building into multiple zones with separate gas sensors deployed in each zone. Each sensor independently measures local gas concentrations, and the computing system integrates these segmented measurements with occupancy data to calculate cumulative exposure. This segmentation approach enables comprehensive cumulative exposure assessment while maintaining manageable device complexity through modular sensor deployment.
Solution Approach 2:
The computing system acts as an intermediary that receives data from multiple stationary gas sensors and occupancy sensors, processes this information, and generates cumulative exposure assessments. This intermediary component integrates measurements from distributed sensors and combines them with occupancy information, resolving the contradiction by providing advanced cumulative exposure assessment without requiring each individual sensor to be overly complex.
2Area of stationary object
If multiple stationary gas sensors are deployed in different rooms, then the spatial coverage of gas concentration measurement is improved, but the device complexity and data processing requirements increase
Solution Approach 1:
The building is segmented into multiple rooms or zones, each equipped with a stationary gas sensor. This segmentation provides comprehensive spatial coverage of gas concentrations throughout the building while keeping each sensor unit simple and standardized. The modular approach to spatial segmentation enables extensive coverage without proportionally increasing overall system complexity.
Solution Approach 2:
Each stationary gas sensor is designed as a universal, multi-functional unit that can be deployed in any room and performs the same measurement function. This universality allows the system to achieve broad spatial coverage using identical standardized components, reducing the complexity that would arise from using different specialized sensors in different locations.
3Stability of the object's composition
If gas sensors are located at fixed positions in rooms, then the measurement location is stable and reproducible, but the ability to track occupant-specific exposure is limited
Solution Approach 1:
The system implements feedback by continuously monitoring both gas concentrations at fixed sensor locations and occupancy status, then using this combined information to calculate and provide feedback on occupant-specific cumulative exposure. The fixed sensors provide stable baseline measurements, while the occupancy feedback mechanism ensures that exposure information is accurately attributed to specific occupants based on their presence in monitored zones.
Solution Approach 2:
The computing system serves as an intermediary that bridges the gap between fixed sensor measurements and mobile occupant exposure tracking. It receives stable spatial data from fixed sensors and occupancy data from sensors that track occupant presence, then integrates these inputs to produce accurate occupant-specific cumulative exposure assessments, preserving exposure information that would otherwise be lost.
Data Source
AI summary
A computing system performs a method of determining cumulative exposure to a gas. The computing system receives data that correspond to local concentrations of a gas from a plurality of stationary gas sensors in a home. Respective stationary gas sensors are located at respective fixed locations in respective rooms in the home. The computing system also receives data that correspond to occupancy of the home, including occupancy by a first occupant. The computing system determines a cumulative exposure of the first occupant to the gas in the home, based at least in part on the received data that correspond to local concentrations of the gas and the received data that correspond to occupancy of the home. The computing system performs and/or sends instructions to perform one or more predefined operations in accordance with the determined cumulative exposure of the first occupant.