Studies heart rate testers based on integration heartbeat detection chip and introduces other components of the testers such as reflectiveinfrared sensor, single-chip and LED display.
The analysis results from the fully reflectiveinfrared ray test and that from the transmission infrared ray test are compared to determine the component of the intermediate layer of the sample.
对照全反射红外光谱和透射红外光谱的分析结果，从而确定样品中间层的成分。
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If the structure is of multi layers, first the upper and the lower surface of the sample go through fully reflectiveinfrared ray test; the components of the upper and lower surface are determined.