Method for multi-information fusion of gas sensitivity and chromatography and on-site detection and analysis of flavor substances based on electronic nose instrument

US12259374B2 · kind B2 · utility

Assignee

• East China University of Science and Technology · CN

Inventors

• Zejian Wang · San Jose, US
• Daqi Gao · Shanghai, CN
• Bo Li · Shanghai, CN
• Xiaoqin Zhang · Shanghai, CN
• Fang Cai · Shanghai, CN
• Jianhua Li · Beijing, CN
• Mingjian Cheng · Shanghai, CN

Key dates

• Filing date: Jul 18, 2020
• Grant date: Mar 25, 2025
• Expiry date: Dec 6, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06N3/084
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Provided is a method for multi-information fusion of gas sensitivity and chromatography and on-site detection and analysis of flavor substances using an electronic nose instrument. The electronic nose instrument includes a gas sensor array module (I), a capillary gas chromatographic column module (II), an automatic headspace sampling module (III), a computer control and data analysis module (IV), an automatic lifter (V) for headspace sampling, a large-volume headspace vapor generation device (VI) and two auxiliary gas sources (VII-1, VII-2). In the gas sampling period of T0-300-600 s, the gas sensor array module and the gas chromatography module have different flow rates, volumes and staring sampling time points of gas sampling, but have synchronous selection and analysis time points of multiple sensitive information. The electronic nose instrument obtains a 69-dimensional combined pattern, including steady-state response peak values, corresponding peak time points as well as under-curve areas, through each on-site real-time detection to a tested sample. The electronic nose instrument detects a large number of odorous samples to establish a big odor data. On this basis, the normali…