Microsystem for Fungal VOC Detection
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Solution Overview
Problem
Current methods for detecting fungal contamination in indoor environments are inadequate for early detection and continuous monitoring, as they require laboratory analysis, are time-consuming, costly, and often fail to detect hidden or recent contaminations.
Innovation Solution
A self-contained device with a preconcentration module, a chromatographic microcolumn, and a detection module using a sensor matrix for in-situ analysis, capable of continuous monitoring without the need for specialized technicians, which concentrates target VOCs and separates them using a chromatographic microcolumn before detection by a sensor array.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional laboratory analysis methods are used for detecting fungal contamination, then measurement precision can be achieved, but the detection time is excessively long and continuous monitoring is not possible
Solution Approach 1:
The device segments the traditional laboratory analysis process into three integrated modules: preconcentration module to concentrate target VOCs from air samples, separation module with chromatographic microcolumn to separate different VOC components, and detection module with sensor array to detect separated compounds. This segmentation enables rapid on-site analysis while maintaining detection accuracy.
Solution Approach 2:
The invention replaces the mechanical/chemical laboratory analysis system with an integrated microsystem that uses a chromatographic microcolumn for separation and a sensor array for detection. This substitution eliminates the need for lengthy laboratory procedures while maintaining measurement precision through the coordinated action of separation and detection modules.
2Measurement precision
If traditional detection methods are used, then specialized equipment and technicians are required, but this increases device complexity and operational difficulty
Solution Approach 1:
The invention merges the preconcentration, separation, and detection functions into a single integrated device. The preconcentration module concentrates target VOCs, the separation module with chromatographic microcolumn separates them, and the detection module with sensor array detects them - all within one compact system that eliminates the need for separate laboratory equipment and specialized technicians.
Solution Approach 2:
The device achieves multi-functionality by combining sampling, preconcentration, separation, and detection capabilities in one system. The chromatographic microcolumn serves both separation and analytical functions, while the sensor array provides simultaneous detection of multiple VOC compounds, making the device universally applicable for fungal contamination monitoring without requiring specialized operational knowledge.
3Measurement precision
If traditional analysis methods are used, then comprehensive analysis can be performed, but the cost of detection is high
Solution Approach 1:
The invention employs a chromatographic microcolumn that can be replaced at low cost after a certain number of uses, and a sensor array that provides comprehensive VOC detection at lower operational costs than traditional laboratory methods. This approach maintains analysis comprehensiveness while significantly reducing detection costs through the use of affordable, replaceable components rather than expensive reusable laboratory equipment.
4Reliability
If conventional detection methods are used, then established protocols can be followed, but early detection of hidden contaminations is not possible
Solution Approach 1:
The preconcentration module performs preliminary concentration of target VOCs from air samples before separation and detection. This preliminary action enables the detection of trace amounts of fungal VOCs at early contamination stages, including hidden contaminations that would be undetectable by conventional methods. The system can identify contamination before visible mold appears, allowing early intervention.
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
Enables rapid, continuous, and cost-effective detection of fungal contamination, reducing the time required for measurements and allowing for early intervention in fungal development, suitable for use in public spaces like museums and hospitals.
Implementation Method 1
The device also comprises flow generating means and at least one valve upstream of the detection module enabling either to direct a flow containing target molecules towards the detection module, or to direct a flow filtered by a first means for filtering towards the detection module
Implementation Method 2
a separation module comprising a chromatographic microcolumn downstream of the preconcentration module
Implementation Method 3
a detection module comprising a sensor array downstream of the separation module
Data Source
AI summary
This invention relates to a device for detecting fungal contamination in an interior environment, including:a concentration module (MC);a separation module (MS) including a chromatographic microcolumn; anda detection module (MD),characterized in that it includes at least one first solenoid valve (E3) upstream of the detection module (MD) enabling either to direct a flow containing target molecules toward the detection module (MD), or to direct a flow filtered by a first means for filtering (Tx1), enabling the detection module (MD) to be cleaned when the flow does not contain the target molecules. The invention also relates to a control interface of the device.