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1. 发明公开

EP0901012A2 A gas detector and its adjusting method 有权
标题翻译：与相关的招聘程序气体传感器
公开(公告)号：EP0901012A2
公开(公告)日：1999-03-10
申请号：EP98307070.7
申请日：1998-09-03
申请人： Figaro Engineering Inc.
发明人： Shioiri,Akira , Udaka,Toshihiro
IPC分类号： G01N27/12 , G01N33/00
CPC分类号： G01N33/0006 , G01N27/122
摘要： A metal oxide semiconductor gas sensor S is connected to a ladder resistance R, and the output voltage is subjected to logarithmic transformation at plural points on a waveform of temperature change by LnR = 2 - 4 V R1/Vc + LnR1 where R indicating the resistance of the metal oxide semiconductor, V R1 the output voltage to the ladder resistance, Vc the detecting voltage, R1 the resistance of the ladder resistance, and Ln natural logarithm, respectively. Standard signals comprising logarithms of resistance values of the metal oxide semiconductor in plural concentrations and at plural points on the waveform are stored in the EEPROM, and these standard signals and logarithms obtained are compared with each other to detect the gas.

2. 发明公开

EP0901012A3 A gas detector and its adjusting method 有权
标题翻译： Gassensor mitzugehörigemEinstellungsverfahren
公开(公告)号：EP0901012A3
公开(公告)日：2001-03-21
申请号：EP98307070.7
申请日：1998-09-03
申请人： Figaro Engineering Inc.
发明人： Shioiri,Akira , Udaka,Toshihiro
IPC分类号： G01N27/12 , G01N33/00
CPC分类号： G01N33/0006 , G01N27/122
摘要： A metal oxide semiconductor gas sensor S is connected to a ladder resistance R, and the output voltage is subjected to logarithmic transformation at plural points on a waveform of temperature change byLnR = 2 - 4 V R1/Vc + LnR1 where R indicating the resistance of the metal oxide semiconductor, V R1 the output voltage to the ladder resistance, Vc the detecting voltage, R1 the resistance of the ladder resistance, and Ln natural logarithm, respectively. Standard signals comprising logarithms of resistance values of the metal oxide semiconductor in plural concentrations and at plural points on the waveform are stored in the EEPROM, and these standard signals and logarithms obtained are compared with each other to detect the gas.
摘要翻译：将金属氧化物半导体气体传感器S连接到梯形电阻R，并且在温度变化波形的多个点处对输出电压进行对数变换，其中R表示金属氧化物半导体的电阻V R1 输出电压为梯形电阻，Vc为检测电压，R1为梯形电阻电阻，Ln分别为自然对数。将包含多个浓度的金属氧化物半导体的电阻值和波形上的多个点的对数的标准信号存储在EEPROM中，将这些标准信号和对数进行比较以检测气体。

3. 发明授权

EP0901012B1 A gas detector and its adjusting method 有权
标题翻译：与相关的招聘程序气体传感器
公开(公告)号：EP0901012B1
公开(公告)日：2005-07-20
申请号：EP98307070.7
申请日：1998-09-03
申请人： Figaro Engineering Inc.
发明人： Shioiri,Akira , Udaka,Toshihiro
IPC分类号： G01N27/12 , G01N33/00
CPC分类号： G01N33/0006 , G01N27/122

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