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2. 发明授权

US4101221A Process for the photo-optical measurement of the absorption behavior of solid, liquid and gaseous media 失效
标题翻译：固体，液体和气体介质吸收行为的光学光学测量方法
公开(公告)号：US4101221A
公开(公告)日：1978-07-18
申请号：US780400
申请日：1977-03-23
申请人： Gunter Schunck , Albert Randwo
发明人： Gunter Schunck , Albert Randwo
IPC分类号： G01J1/36 , G01N21/31 , G01N21/3504 , G01N21/22
CPC分类号： G01N21/3504 , G01J1/36 , G01N2021/317
摘要： A process and apparatus for the photo-optical measurement of the absorption behavior of solid, liquid and gaseous media. The analysis medium and a comparison medium are exposed to two light beams. The light beams are broken up by a chopper means into a periodical sequence of light pulses and the measured difference of the beam attenuations in the analysis medium and comparison medium is evaluated in a circuit which is adjustable with regard to the intensity of the radiation from the optical light source and the sensitivity of the light receiver. The light pulses are divided by defined variation of their intensity into two different pulse series of which one series comprises measuring light pulses and the other series comprises control pulses. The evaluation of the measuring light pulses is periodically interrupted by the control pulses for a relatively short time period and the actual value of the control pulses is compared with a standard value during said time period, and the circuit is adjusted during said time period in accordance with the difference between the actual value and the standard value so that said difference is decreased to as small a value as possible, whereupon the following measuring light pulses are again evaluated for the purpose of a measurement.
摘要翻译：一种用于光学测量固体，液体和气体介质的吸收行为的方法和装置。分析介质和比较介质暴露于两个光束。光束通过斩波装置分解成周期性的光脉冲序列，并且在电路中评估分析介质和比较介质中的光束衰减的测量差异，该电路可以相对于来自光源和光接收器的灵敏度。光脉冲被其强度的限定变化除以两个不同的脉冲序列，其中一个系列包括测量光脉冲，另一个系列包括控制脉冲。测量光脉冲的评估在相对短的时间周期内由控制脉冲周期性地中断，并且在所述时间段期间将控制脉冲的实际值与标准值进行比较，并且在所述时间段期间根据电路调整电路与实际值和标准值之间的差异使得所述差减小到尽可能小的值，由此为了测量的目的再次评估以下测量光脉冲。

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