The operational principle of the combustion efficiency meter and the basic circuits for thermocouple temperature measurement, oxygen measurement, co measurement are introduced.

介绍燃烧效率测定仪的工作原理及热电偶测温、氧测量、一氧化碳测量的基本电路。

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Light sources launch driven, light signal reception, signal conditioning, and data acquisition system were designed, and signals for calculating oxygen saturation were acquired by these circuits.

论文设计了光源发射驱动、光信号接收、信号调理及数据采集等硬件电路，以获得计算血氧饱和度所需的信号。

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