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    • 52. 发明授权
    • Method for operating a gas sensor
    • 操作气体传感器的方法
    • US06289719B1
    • 2001-09-18
    • US09308995
    • 1999-06-01
    • Bernhard BloemerBernd Schumann
    • Bernhard BloemerBernd Schumann
    • F02B300
    • G01N27/4065G01N27/4067
    • A method of operating a gas sensor having two sensor electrodes whose output signal is evaluated in an evaluation circuit connected downstream of the sensor electrodes, the sensor electrodes being arranged in an ion-conducting ceramic and being therefor heated by an electrical heater, characterized in that a pulsewidth modulated heater voltage signal is applied to the heater; and that a compensation signal is superposed on the output signal of the sensor electrodes, the compensation signal being essentially formed so as to be counterclocked and inverted to the pulsewidth modulated heater voltage signal.
    • 一种操作具有两个传感器电极的气体传感器的方法,所述传感器电极的输出信号在连接在传感器电极的下游的评估电路中被评估,所述传感器电极布置在离子导电陶瓷中并由电加热器加热,其特征在于, 将脉宽调制加热器电压信号施加到加热器; 并且补偿信号叠加在传感器电极的输出信号上,补偿信号基本上形成为被倒计时并被反转到脉宽调制加热器电压信号。
    • 53. 发明授权
    • Sensor for determining the concentration of oxidizable elements in a gas compound
    • 用于确定气体化合物中可氧化元素浓度的传感器
    • US06174421B1
    • 2001-01-16
    • US09202313
    • 1999-03-22
    • Bernd Schumann
    • Bernd Schumann
    • G01N27407
    • G01N27/4074
    • Sensor for measuring the concentration of oxidizable constituents in a gas mixture, in particular for measuring one or more NOx, CO, H2 gases, and preferably unsaturated hydrocarbons, by measuring the voltage between a measuring electrode a reference electrode or by measuring the voltage between two measuring electrodes. A porous solid electrolyte makes it possible to dispense with a reference gas atmosphere, thus providing greater miniaturization and simplifying the design. The selectivity toward individual measuring gas constituents can be improved by selecting the measuring electrode materials, in particular by using semiconductors.
    • 用于测量气体混合物中的可氧化组分的浓度的传感器,特别是用于通过测量测量电极与参比电极之间的电压或通过测量两个之间的电压来测量一个或多个NO x,CO,H 2气体,优选不饱和烃 测量电极。 多孔固体电解质使得可以省去参考气体气氛,从而提供更大的小型化和简化设计。 通过选择测量电极材料,特别是通过使用半导体,可以提高对单个测量气体成分的选择性。
    • 54. 发明授权
    • Sensor for detecting nitrogen oxide
    • 用于检测氮氧化物的传感器
    • US5624640A
    • 1997-04-29
    • US628664
    • 1996-04-12
    • Heidrun PotthastBernd Schumann
    • Heidrun PotthastBernd Schumann
    • B65H19/18G01N27/12G01N31/00G01N33/00
    • G01N33/0037G01N27/12G01N31/005Y10T436/177692
    • A sensor is proposed for detecting nitrogen oxides (NO, NO.sub.2, N.sub.2 O.sub.4) in a test gas, having a semiconducting metal oxide layer (3) which is deposited on a ceramic substrate (10) and whose electrical resistance provides information about the concentration of nitrogen oxides (NO, NO.sub.2, N.sub.2 O.sub.4) in the test gas. The main components of the sensor are a converter layer (4) which is deposited on the metal oxide layer (3) and is made of a material which causes the oxidation of combustible components of the test gas and converts the nitrogen monoxide (NO) contained in the test gas into nitrogen dioxide (NO.sub.2) or dinitrogen tetroxide (N.sub.2 O.sub.4), which then reaches the metal oxide layer (3), as well as a heating device (5) which heats the metal oxide layer (3) and the converter layer (4). The converter layer is suitably constituted of titanium oxide (TiO.sub.2) and/or zirconium oxide (ZrO.sub.2) and/or silicon oxide (SiO.sub.2) and/or aluminum oxide (Al.sub.2 O.sub.3) and has a platinum content of from 0.01 to 20 weight percent.
    • PCT No.PCT / DE94 / 01051 Sec。 371日期:1996年4月12日 102(e)日期1996年4月12日PCT 1994年9月14日PCT公布。 公开号WO95 / 10774 日期1995年4月20日提出了一种用于检测测试气体中的氮氧化物(NO,NO 2,N 2 O 4)的传感器,其具有沉积在陶瓷衬底(10)上的半导体金属氧化物层(3),并且其电阻提供信息 关于试验气体中的氮氧化物(NO,NO 2,N 2 O 4)的浓度。 传感器的主要部件是沉积在金属氧化物层(3)上的转换器层(4),并且由使得测试气体的可燃组分氧化并转化所含的一氧化氮(NO)的材料制成。 在试验气体中进入二氧化氮(NO2)或四氧化二氮(N2O4),然后到达金属氧化物层(3),以及加热装置(5),其加热金属氧化物层(3)和转化层 (4)。 转换层适宜地由氧化钛(TiO 2)和/或氧化锆(ZrO 2)和/或氧化硅(SiO 2)和/或氧化铝(Al 2 O 3)构成,铂含量为0.01〜20重量%。