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    • 5. 发明授权
    • Device for checking the operability of a sensor element
    • 用于检查传感器元件的可操作性的装置
    • US08330470B2
    • 2012-12-11
    • US12743037
    • 2008-11-07
    • Claudius BevotUwe Lueders
    • Claudius BevotUwe Lueders
    • G01N27/62
    • G01N27/4175G01N27/4062
    • The invention relates to a device for checking the operability of a sensor element (100) for determining the concentration of gas components in a gas mixture, particularly of the concentration of gas components in the exhaust gas of internal combustion engine, having an external pump electrode (APE) and an internal pump and Nernst electrode (IPE), a measurement resistor (Rm) and a balancing resistor (Rtrim) connected parallel thereto being provided upstream of the external pump electrode (APE), and a pump current (Ip) being impressible into the external pump electrode by means of a pump current source, and a measuring voltage (Um) incident across the measuring resistor (Rm) via a measuring and analysis device (200) being detectable, characterized in that an activatable switch means (S) is disposed in series to the measuring resistor (Rm), which can be switched at a high impedance for a predetermined amount of time, during which the voltage across the measuring resistor is detected and analyzed in the measuring and analysis device, and that an error output occurs upon a predetermined voltage threshold value being exceeded.
    • 本发明涉及一种用于检查传感器元件(100)的可操作性的装置,用于确定气体混合物中气体组分的浓度,特别是内燃机排气中的气体组分的浓度,其具有外部泵电极 (APE)和外部泵浦电极(APE)上游的内部泵和能斯特电极(IPE),测量电阻器(Rm)和与其并联连接的平衡电阻器(Rtrim),泵电流(Ip) 通过泵浦电流源可以进入外部泵电极,经由测量和分析装置(200)可检测地穿过测量电阻器(Rm)入射的测量电压(Um),其特征在于可激活的开关装置(S )与测量电阻器(Rm)串联布置,其可以在高阻抗下切换预定时间量,在该预定时间期间检测测量电阻器两端的电压, 在测量和分析装置中分析,并且在超过预定电压阈值时发生错误输出。
    • 7. 发明申请
    • DEVICE FOR CHECKING THE OPERABILITY OF A SENSOR ELEMENT
    • 检测传感器元件的可操作性的装置
    • US20110012630A1
    • 2011-01-20
    • US12743037
    • 2008-11-07
    • Claudius BevotUwe Lueders
    • Claudius BevotUwe Lueders
    • G01R31/00
    • G01N27/4175G01N27/4062
    • The invention relates to a device for checking the operability of a sensor element (100) for determining the concentration of gas components in a gas mixture, particularly of the concentration of gas components in the exhaust gas of internal combustion engine, having an external pump electrode (APE) and an internal pump and Nernst electrode (IPE), a measurement resistor (Rm) and a balancing resistor (Rtrim) connected parallel thereto being provided upstream of the external pump electrode (APE), and a pump current (Ip) being impressible into the external pump electrode by means of a pump current source, and a measuring voltage (Um) incident across the measuring resistor (Rm) via a measuring and analysis device (200) being detectable, characterized in that an activatable switch means (S) is disposed in series to the measuring resistor (Rm), which can be switched at a high impedance for a predetermined amount of time, during which the voltage across the measuring resistor is detected and analyzed in the measuring and analysis device, and that an error output occurs upon a predetermined voltage threshold value being exceeded.
    • 本发明涉及一种用于检查传感器元件(100)的可操作性的装置,用于确定气体混合物中气体组分的浓度,特别是内燃机排气中的气体组分的浓度,其具有外部泵电极 (APE)和外部泵浦电极(APE)上游的内部泵和能斯特电极(IPE),测量电阻器(Rm)和与其并联连接的平衡电阻器(Rtrim),泵电流(Ip) 通过泵浦电流源可以进入外部泵电极,经由测量和分析装置(200)可检测地穿过测量电阻器(Rm)入射的测量电压(Um),其特征在于可激活的开关装置(S )与测量电阻器(Rm)串联布置,其可以在高阻抗下切换预定时间量,在该预定时间期间检测测量电阻器两端的电压, 在测量和分析装置中分析,并且在超过预定电压阈值时发生错误输出。