Small intelligent gas sensing detection system based on double-branch convolutional neural network and high-precision quantitative analysis method of aflatoxin

By analyzing the temporal dynamics and spatial characteristics of fungal metabolic VOCs data using a dual-branch convolutional neural network (DB-CNN), a compact intelligent gas sensing and detection system for AFB1 was designed. This system solves the problem of inaccurate detection of AFB1 in existing technologies and enables high-precision quantitative analysis of aflatoxin and real-time monitoring of the food supply chain.

CN122409764APending Publication Date: 2026-07-17JIANGNAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGNAN UNIV
Filing Date
2025-12-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing volatile organic compound (VOC)-based detection systems are mainly used to determine whether grains and foods are contaminated or to accurately detect the amount of fungi, but there is a lack of methods for accurately detecting aflatoxin B1 (AFB1) through VOCs.

Method used

A compact intelligent gas sensing and detection system for AFB1 was designed by using a dual-branch convolutional neural network (DB-CNN) to analyze the temporal dynamics and spatial characteristics of fungal metabolic VOCs data. The system extracts gas fingerprints through parallel convolutional channels, enabling high-precision quantitative analysis of AFB1.

Benefits of technology

It enables accurate differentiation between corn, peanuts, wheat and other grains infected with Aspergillus flavus and high-precision quantitative analysis of AFB1. It supports wireless transmission and is suitable for dynamic real-time monitoring of fungal contamination in the food supply chain, providing early warning and quality control.

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Abstract

本发明为解决现有基于VOCs的检测系统主要用于确定谷物和食品是否受到污染或准确检测真菌数量,而缺乏通过VOCs准确检测AFB1的问题,从而提出基于双分支卷积神经网络的小型智能气体传感检测系统及黄曲霉毒素高精度定量分析方法。涉及黄曲霉毒素B1(AFB1)的高精度定量分析技术领域。系统通过数据采集模块(含气流控制、除湿、温湿度传感及气体传感器阵列)获取VOCs信号,由数据处理分析模块(含ADC、主控制器)进行信号转换,并利用内嵌的双分支CNN(采用异构特征融合策略)对信号进行处理,实现AFB1的高精度定量分析,本发明适用于黄曲霉毒素B1(AFB1)的定量分析检测。
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