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发明申请
US20080283753A1 Ir Sensor, Especially a Co2 Sensor 有权
Ir传感器，特别是Co2传感器

Ir Sensor, Especially a Co2 Sensor
摘要：
An IR sensor (1), especially a CO2 sensor, is described, having a filter arrangement (6), downstream of which there is arranged a detector arrangement (7), and an evaluating device (8) which is connected to the detector arrangement (7), the filter arrangement (6) having a first filter (9) and a second filter (10), which are configured as bandpass filters and each have a passband and of which the first filter (9) allows passage of a predetermined IR band and the second filter (10) does not, and the detector arrangement having two detectors (14, 15), each of which is associated with a filter (9, 10). The objective is to simplify the use of such an IR sensor. For that purpose, the passband of one filter (10) is arranged within the passband of the other filter (9) and the evaluating device (8) forms the difference of the signals (S1, S2) of the detectors (14, 15) and normalises it to the signal (S1) of a detector (14).
摘要（中）：

描述了具有滤波器装置（6）的红外传感器（1），特别是CO 2传感器，其下游设置有检测器装置（7）和评估装置（8） ），所述滤波器装置（6）具有第一滤波器（9）和第二滤波器（10），所述第一滤波器（9）和第二滤波器（10）被配置为带通滤波器，并且每个具有通带，并且所述滤波器装置 （9）允许预定的IR频带通过，而第二滤波器（10）不通过，并且检测器装置具有两个检测器（14,15），每个检测器与滤波器（9,10）相关联。 目的是简化这种IR传感器的使用。 为此，一个滤波器（10）的通带被布置在另一个滤波器（9）的通带内，并且评估装置（8）形成检测器（14,12）的信号（S 1，S 2） 15）并将其归一化为检测器（14）的信号（S 1）。

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