Electronic Nasal Test System for Respiratory Disease Screening, Integrated with Real-Time Monitoring and Artificial Intelligence-Based Automatic Chamber Flushing Mechanism.

Abstract

The invention proposes an electronic nose system to support offline respiratory disease screening, comprising an aerodynamic measurement chamber and a central control unit. The invention is characterized by three mechanisms: (1) A closed-loop flushing mechanism with real-time monitoring and independent intake / exhaust paths eliminates the risk of cross-contamination, cumulative error between measurements, and sensor saturation; (2) A feature extraction algorithm based on rate of attenuation and recovery eliminates errors due to aging and material memory effects; (3) An offline multilayer neural network in Float32 format embedded directly into the microcontroller provides nonlinear compensation for local microclimatic interference (temperature, humidity). The system achieves clinical accuracy above 98% and inference speed below 1 millisecond.

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