公开(公告)号：EP0966661A4

公开(公告)日：2006-07-26

申请号：EP98952347

申请日：1998-10-20

Applicant: MOTOROLA INC

Inventor： YOUNG DANIEL A ,  MOYA ADAM ,  KORIPELLA CHOWDARY R ,  NABER JEFFREY ,  ADAMS NEIL ,  MILLER ADAM ,  MARKYVECH CRAIG

IPC: G01N25/26 ,  G01N25/30 ,  G01N25/36 ,  G01N27/16 ,  G01N27/419

CPC classification number: G01N27/16 ,  G01N25/30 ,  G01N27/419

Abstract: A calorimetric hydrocarbon gas sensor (10) includes an electrochemical oxygen pump (18), a sensing element (12), and a multi-layered substrate (26) separating the sensing element (12) from the electrochemical oxygen pump (18). The multi-layered substrate (26) includes a plurality of overlying insulating layers, in which at least one intermediate layer (60) supports a first primary heater (58), and in which another intermediate layer (52) supports a temperature compensation heater (50a, 50b). The primary heater (58) functions to maintain the calorimetric hydrocarbon gas sensor (10) at a constant, elevated temperature, while the active compensation heater (50a) functions to maintain substantially equal temperatures as determined by the thermometers (46a, 46b) located on an intermediate layer (48) overlying the compensation heaters (50a, 50b). Control circuitry is integrated with power measurement circuitry to measure differences in the heat produced by the compensation heater (50a) and the thermometer (46a) in an active region (100), and the heat produced by the compensation heater (50b) and the thermometer (46b) in a reference region (102).

公开(公告)号：WO9926051A2

公开(公告)日：1999-05-27

申请号：PCT/US9821931

申请日：1998-10-20

Applicant: MOTOROLA INC

Inventor： YOUNG DANIEL A ,  MOYA ADAM ,  KORIPELLA CHOWDARY R ,  NABER JEFFREY ,  ADAMS NEIL ,  MILLER ADAM ,  MARKYVECH CRAIG

IPC: G01N25/30 ,  G01N25/36 ,  G01N27/16 ,  G01N27/419 ,  G01N

CPC classification number: G01N27/16 ,  G01N25/30 ,  G01N27/419

Abstract: A calorimetric hydrocarbon gas sensor (10) includes an electrochemical oxygen pump (18), a sensing element (12), and a multi-layered substrate (26) separating the sensing element (12) from the electrochemical oxygen pump (18). The multi-layered substrate (26) includes a plurality of overlying insulating layers, in which at least one intermediate layer (60) supports a first primary heater (58), and in which another intermediate layer (52) supports a temperature compensation heater (50a, 50b). The primary heater (58) functions to maintain the calorimetric hydrocarbon gas sensor (10) at a constant, elevated temperature, while the active compensation heater (50a) functions to maintain substantially equal temperatures as determined by the thermometers (46a, 46b) located on an intermediate layer (48) overlying the compensation heaters (50a, 50b). Control circuitry is integrated with power measurement circuitry to measure differences in the heat produced by the compensation heater (50a) and the thermometer (46a) in an active region (100), and the heat produced by the compensation heater (50b) and the thermometer (46b) in a reference region (102).

Abstract translation: 量热烃气体传感器（10）包括电化学氧气泵（18），感测元件（12）和将感测元件（12）与电化学氧气泵（18）分开的多层基底（26）。 多层基板（26）包括多个上覆绝缘层，其中至少一个中间层（60）支撑第一主加热器（58），并且其中另一个中间层（52）支撑温度补偿加热器 50a，50b）。 主加热器（58）用于将量热烃气体传感器（10）保持在恒定的升高的温度，而主动补偿加热器（50a）用于维持基本相同的温度，由温度计（46a，46b） 覆盖补偿加热器（50a，50b）的中间层（48）。 控制电路与功率测量电路集成，以测量由有源区域（100）中的补偿加热器（50a）和温度计（46a）产生的热量的差异，以及补偿加热器（50b）和温度计 （46b）在参考区域（102）中。