公开(公告)号：US20180052129A1

公开(公告)日：2018-02-22

申请号：US15797078

申请日：2017-10-30

Applicant: STMicroelectronics S.r.l.

Inventor： Pasquale Biancolillo ,  Angelo Recchia ,  Pasquale Franco ,  Antonio Cicero ,  Giuseppe Bruno

IPC: G01N27/12 ,  G01N27/18

CPC classification number: G01N27/121 ,  G01N27/18

Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.

公开(公告)号：US20160003757A1

公开(公告)日：2016-01-07

申请号：US14726823

申请日：2015-06-01

Applicant: STMicroelectronics S.r.l.

Inventor： Pasquale Biancolillo ,  Angelo Recchia ,  Pasquale Franco ,  Antonio Cicero ,  Giuseppe Bruno

IPC: G01N27/12

CPC classification number: G01N27/121 ,  G01N27/18

Abstract: A gas measurement device measures gas using a gas sensor including a sense resistance exposed to the gas and a reference resistance not exposed to the gas. The gas measurement device applies a first current value and a second current value to the sensor. A detector functions to detect a first resistance variation and a second resistance variation of the sense resistance exposed to the gas with respect to the reference resistance as a function of the first current value and the second current value, respectively. The resistance variation dependent on relative humidity is then determined as a function of the first and second resistance variations and a first constant. The resistance variation dependent on gas content is then determined as a function of the first and second resistance variations and a second (different) constant.

Abstract translation: 气体测量装置使用包括暴露于气体的感测电阻和不暴露于气体的参考电阻的气体传感器来测量气体。 气体测量装置向传感器施加第一电流值和第二电流值。 检测器用于分别作为第一电流值和第二电流值的函数来检测暴露于气体的感测电阻相对于参考电阻的第一电阻变化和第二电阻变化。 然后根据相对湿度的电阻变化作为第一和第二电阻变化和第一常数的函数来确定。 然后根据气体含量的电阻变化确定为第一和第二电阻变化和第二（不同）常数的函数。