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CAPNOGRAPHY WITH LEAD SELENIDE DETECTOR AND INTEGRATED BANDPASS FILTER
CAPNOGRAPHY WITH LEAD SELENIDE DETECTOR AND INTEGRATED BANDPASS FILTER
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机译:带铅硒网检测器和集成带通滤波器的谱图
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摘要
A capnometer (10) includes an integrated device (30, 30A, 30B) comprising a substrate (40), a lead selenide (PbSe) layer (42) or other infrared light absorbing layer disposed on the substrate, and a bandpass filter layer (50) disposed on the substrate. A temperature sensor tracks temperature of the device. A CO2 measurement cell (20) has light source (28) arranged to emit light (L) that passes through a flow path (F) and then through the bandpass filter layer of to reach the PbSe or other infrared light absorbing layer. Electronics (32) connected with the PbSe or other infrared light absorbing layer measure a photoconductivity signal. The electronics includes signal processing circuitry to convert the photoconductivity signal to a carbon dioxide partial pressure or concentration value. The electronics also includes the temperature sensor to enable accurate and fast temperature control of the device and instant temperature compensation for the temperature change.
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机译:Capnometer(10)包括一种集成装置(30,30a,30b),该集成装置(30,30a,30b)包括衬底(40),引线硒化烯(Pbse)层(42)或设置在所述基板上的其他红外光吸收层,以及带通滤波器层( 50)设置在基材上。 温度传感器跟踪器件的温度。 CO 2测量单元(20)具有光源(28),该光源(28)布置成发光(L)通过流动路径(F),然后通过带通滤波器层到达PBSE或其他红外光吸收层。 与PBSE或其他红外光吸收层连接的电子器件(32)测量光电导率信号。 电子器件包括信号处理电路,以将光电导率信号转换为二氧化碳分压或浓度值。 电子器件还包括温度传感器,以实现对设备的精确和快速的温度控制和用于温度变化的即时温度补偿。
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