- 专利标题: Gas sensor with humidity correction
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申请号: US15872999申请日: 2018-01-17
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公开(公告)号: US10436737B2公开(公告)日: 2019-10-08
- 发明人: Heinrich Sussner , Paul R Wilkinson , Steven Yamamoto , David K Britt
- 申请人: MATRIX SENSORS, INC.
- 申请人地址: US CA San Diego
- 专利权人: MATRIX SENSORS, INC.
- 当前专利权人: MATRIX SENSORS, INC.
- 当前专利权人地址: US CA San Diego
- 代理商 Mark B. Floyd
- 主分类号: A61B5/055
- IPC分类号: A61B5/055 ; G01N27/327 ; G01N27/02 ; G01N29/00 ; G01N29/02 ; G01N29/036 ; G01N29/24 ; G01N29/44 ; A61B5/00 ; A61B5/145
摘要:
A device and method are provided for detecting analyte with correction for the effects of humidity. The device comprises a resonant sensor having an oscillating portion. A capacitor is positioned on the oscillating portion. The capacitor is formed by at least two electrodes and a sensing material positioned between the electrodes. A readout circuit is arranged to measure a response of the oscillating portion (e.g., frequency shift or change in resonance frequency, stiffness or strain) and a capacitance of the capacitor when substances are adsorbed or absorbed in the sensing material. This combination of measurements enables the device to distinguish between various types of adsorbed or absorbed molecules, especially distinguishing between an analyte of interest and water molecules that might interfere with the detection of the analyte. A processor determines an analyte value indicative of the presence, amount or concentration of the analyte in dependence upon measurements of both the response of the oscillating portion and the capacitance to account for the effects of water in the sensing material.
公开/授权文献
- US20180202961A1 Gas Sensor with Humidity Correction 公开/授权日:2018-07-19