Indoor Air Quality Index Using Multi-Pollutant Damage Aggregation
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Solution Overview
Problem
Current methods for assessing indoor air quality only reflect the most severe pollutant and do not account for the impact of less severe pollutants, leading to an incomplete representation of overall indoor air quality.
Innovation Solution
A method involving multiple air monitors to collect pollutant concentration values, calculate average concentrations, convert these into damage values using predetermined standards, and compute a total damage value using a p-norm formula to derive an indoor air index that reflects the combined impact of various pollutants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single air monitor is used to measure air quality, then the measurement is simple, but it only reflects air quality in a small region and cannot fully represent overall indoor air quality
Solution Approach 1:
The indoor space is divided into multiple monitoring regions, each equipped with an air monitor. This segmentation allows comprehensive coverage of different areas while maintaining manageable complexity through modular deployment
Solution Approach 2:
Multiple individual air quality measurements from different regions are merged through weighted averaging to produce a single comprehensive indoor air quality index that represents the overall environment
2Device complexity
If air quality is calculated based on the most severe pollutant only, then the calculation is straightforward, but it does not reflect the impact of other less severe pollutants on air quality
Solution Approach 1:
The calculation method transforms from considering only the maximum pollutant concentration to incorporating all pollutant concentrations through a weighted summation formula, where each pollutant contributes proportionally to its concentration and weight
Solution Approach 2:
The air quality index is constructed as a composite measure combining multiple pollutant parameters (PM2.5, PM10, O3, NO2, SO2, CO) with different weights, similar to how composite materials combine different substances to achieve desired properties
3Measurement precision
If multiple air monitors are deployed and comprehensive calculations are performed, then the air quality assessment becomes accurate and comprehensive, but the system complexity increases
Solution Approach 1:
The system uses standardized air monitors and a unified calculation formula that can be applied to any indoor space regardless of size or configuration, making the complex system universally applicable and easier to deploy
Solution Approach 2:
The system automatically collects data from multiple monitors, performs weighted averaging calculations, and generates the comprehensive air quality index without requiring manual intervention, reducing operational complexity
Data Source
AI summary
The present invention provides a method for comprehensively assessing indoor environmental quality. Pollutant concentration data used in the method is an average value calculated after sampling is performed at a plurality of positions in an indoor space, and is therefore relatively accurate, so that an excessively high or excessively low pollutant concentration at a position is prevented from impairing the accuracy of a measurement result. In the method, concentrations of pollutants are further converted into damage values, the damage values of the pollutants are converted into a total damage value based on a predetermined rule, and an air index is then calculated according to the total damage value, where the calculated air index reflects the impact of various pollutants on air healthiness. Therefore, by using the method for comprehensively assessing indoor environmental quality of the present invention, the measurement is precise, and indoor air healthiness can be comprehensively reflected.