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    • 1. 发明公开
    • GAS SENSING DEVICE AND METHOD FOR OPERATING A GAS SENSING DEVICE
    • EP4414699A1
    • 2024-08-14
    • EP23156358.6
    • 2023-02-13
    • Infineon Technologies AG
    • ITEN, LucaCARBONELLI, CeciliaZHAO, JianyuMITTERMAIER, Simon
    • G01N27/12G01N33/00
    • G01N33/0006G01N33/0034G01N27/122
    • A gas sensing device for sensing one or more gases in a mixture of gases is provided. The gas sensing device (1) comprises: one or more chemo-resistive gas sensors (2); a preprocessing processor (3) configured for generating a preprocessed signal sample (PSS) for each of the signal samples (SIG); a drift correction processor (4) configured for applying a mapping function (MPF) to each of the preprocessed signal samples (PSS) in order to create a drift-corrected signal (DCS) sample for each of the preprocessed signal samples (PSS); a feature extraction processor (5) configured for extracting a set of feature values (FV) from each of the drift-corrected signal samples (DCS); a sensing result processor (6) configured for creating for each of the gases a sensing result (SR) for each of the sets of feature values (FV); a state processor (7) configured for determining a state (STA) of the gas sensing device (1); and an update processor (8) configured for providing updates (UPD) to the drift correction processor (4), wherein a quality value (QV) for each possible update action of a plurality of update actions is provided, wherein an update action processor (10) is configured for calculating the update (UPD) for the subsequent update step by applying the possible update action, which has a highest quality value of the quality values (QV) of the current update step, to the mapping function (MPF) of the current update step.
    • 8. 发明公开
    • Gas sensor and air-fuel ratio controller
    • Gassensor und Regler des Luft- /Kraftstoffverhältnisses
    • EP2023132A2
    • 2009-02-11
    • EP08014064.3
    • 2008-08-06
    • Yamaha Hatsudoki Kabushiki Kaisha
    • Oh-Hori, NorikoSuzuki, Toshio
    • G01N27/12
    • G01N27/122
    • A gas sensor includes a gas detection section (1), a heater (2) whose electrical resistance value changes in accordance with temperature, and a control section (3) arranged to control an operation of the heater and to perform powering of the heater for heating. The control section includes a current supply section (6) to supply a current to the heater in a period during which powering of the heater for heating is stopped, a voltage detection section (7) arranged to detect an end-to-end voltage of the heater while a current is being supplied to the heater from the current supply section (6), and a current adjustment section (8) arranged to adjust the level of the current, during a cold period of the heater, which is supplied from the current supply section (6) based on an ambient temperature and the end-to-end voltage of the heater as detected by the voltage detection section (7).
    • 气体传感器包括气体检测部(1),其电阻值根据温度而变化的加热器(2),以及控制部(3),其配置为控制加热器的动作,并对加热器进行供电 加热。 所述控制部包括电流供给部(6),用于在加热用加热器停止供电的期间向所述加热器供给电流;电压检测部(7),被配置为检测所述加热器的端对端电压 所述加热器当从所述电流供应部分(6)向所述加热器供电时,以及电流调节部分(8),其布置成在所述加热器的冷期间内调节所述电流的电平,所述电流调节部分 电流供应部分(6),其基于由电压检测部分(7)检测的环境温度和加热器的端到端电压。