公开(公告)号：US20140174154A1

公开(公告)日：2014-06-26

申请号：US14232323

申请日：2012-07-09

申请人： Johan Marra ,  Johan Hendrik Klootwijk ,  Jacobus Bernardus Giesbers ,  Nico Maris Adriaan De Wild ,  Marcel Bulder ,  Rogie Adrianus Henrica Niessen ,  Peter Van Der Linde

发明人： Johan Marra ,  Johan Hendrik Klootwijk ,  Jacobus Bernardus Giesbers ,  Nico Maris Adriaan De Wild ,  Marcel Bulder ,  Rogie Adrianus Henrica Niessen ,  Peter Van Der Linde

IPC分类号： G01N27/403

CPC分类号： G01N27/403 ,  G01N1/2273 ,  G01N27/4045 ,  G01N33/0006

摘要： A method of selectively sensing the concentration of a target gas in polluted ambient air comprises the steps of: —providing a target gas sensor (220) sensitive to the target gas; —providing a first gas flow derived from the ambient air, from which first flow the target gas is substantially removed; —providing a second gas flow derived from the ambient air, substantially comprising the same target gas concentration as the ambient air; —exposing the target gas sensor to the first gas flow during a first time interval, and obtaining from the sensor a first output signal (Smf); —exposing the target gas sensor to the second gas flow during a second time interval not overlapping with the first time interval, and obtaining a second output signal (Smu); —calculating the difference (SΔ) between the first and the second output signals; calculating the concentration of the target gas from the calculated signal difference (SΔ).

摘要翻译： 一种选择性地感测污染环境空气中目标气体浓度的方法包括以下步骤： - 提供对目标气体敏感的目标气体传感器（220）; - 提供源自环境空气的第一气流，从其从基本上除去目标气体的第一次流动; 提供源自环境空气的第二气流，基本上包括与环境空气相同的目标气体浓度; - 在第一时间间隔内将目标气体传感器暴露于第一气体流，并从传感器获得第一输出信号（Smf）; 在不与第一时间间隔重叠的第二时间间隔内将目标气体传感器附接到第二气体流，并获得第二输出信号（Smu）; 计算第一和第二输出信号之间的差值（S＆Dgr;）; 根据计算出的信号差（S＆Dgr;）计算目标气体的浓度。