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公开(公告)号:US4067320A
公开(公告)日:1978-01-10
申请号:US682167
申请日:1976-04-30
申请人: Sven-Gunnar Olsson , Rolf Castor , Gabriel Tchang
发明人: Sven-Gunnar Olsson , Rolf Castor , Gabriel Tchang
CPC分类号: G01N33/4972 , A61B5/0836 , G01N21/274
摘要: An arrangement for automatic drift compensation in a gas analyzer in which a source of radiation radiates through the gas to be analyzed, and directs the radiation onto a detector. The latter forms an amplified output signal corresponding to the detector output and corresponding to the gas concentration. A signal storage stores the signal corresponding to the output signal of the detector when the gas to be analyzed has a predetermined concentration. A comparator compares the output signal from the detector with the stored signal. The gas analyzer is used for determining the content of a predetermined gas in a mixture of gases exhaled by a patient. A circuit connected between the detector output and the comparator input delivers to the storage a signal during the inspiration phase of the patient.
摘要翻译: 一种用于气体分析器中的自动漂移补偿的装置,其中辐射源辐射通过待分析的气体,并将辐射引导到检测器上。 后者形成对应于检测器输出并对应于气体浓度的放大输出信号。 当待分析的气体具有预定浓度时,信号存储器存储与检测器的输出信号对应的信号。 比较器将来自检测器的输出信号与存储的信号进行比较。 气体分析仪用于确定由患者呼出的气体混合物中的预定气体的含量。 连接在检测器输出和比较器输入端之间的电路在患者的吸气阶段向存储器传送信号。