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2. 发明公开

EP2458374A1 Control apparatus for gas sensor 有权转让
标题翻译： Steuervorrichtungfüreinen Gassensor
公开(公告)号：EP2458374A1
公开(公告)日：2012-05-30
申请号：EP11009438.0
申请日：2011-11-29
申请人： NGK Spark Plug Co., Ltd.
发明人： Maeda, Seiji
IPC分类号： G01N27/406 , G01N27/417 , F02D41/14
CPC分类号： G01N27/4065 , F02D41/1454 , F02D41/1495 , G01N27/4175
摘要： A control apparatus (100) for a gas sensor (10) including a cell (2) composed of a solid electrolyte body and a pair of electrodes provided thereon which generates a sensor output corresponding to the concentration of a specific gas includes voltage application means (70) for applying a single pulse voltage to the cell over a constant energization time T; first-output-value obtaining means (70) for obtaining a first output value Vri1 from the cell when a first time t1 shorter than the constant energization time elapses after the start of application of the single pulse voltage; second-output-value obtaining means (70) for obtaining a second output value Vri2 from the cell when a second time t2 shorter than the constant energization time but longer than the first time elapses after the start of application of the single pulse voltage; and deterioration-degree detection means (70) for detecting the degree of deterioration of the cell on the basis of a difference ΔVri between the second output value and the first output value.
摘要翻译：一种用于气体传感器（10）的控制装置（100），其包括由固体电解质体构成的电池（2）和设置在其上的一对电极，其产生对应于特定气体的浓度的传感器输出包括电压施加装置 70），用于在恒定的通电时间T内向单元施加单个脉冲电压; 第一输出值获取装置，用于在单脉冲电压开始施加之后经过短于恒定通电时间的第一时间t1时从单元获得第一输出值Vri1; 第二输出值获取装置，用于在比单脉冲电压开始施加之后第一时间长但比第一时间短的第二时间t2从单元获得第二输出值Vri2; 和劣化度检测装置（70），用于根据第二输出值和第一输出值之间的差“Vri”检测单元的劣化程度。

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