Optical measurement device

专利名称：Optical measurement device发明人：Masami Watanabe申请号：US07/645593申请日：19910124公开号：US05125744A公开日：19920630

摘要：An optical measuring apparatus for measuring physical quantity which has afrequency by applying an optical sensor which modulates intensity of the light accordingto the physical quantity, wherein malfunctions in the apparatus itself, concretely, in acondenser, an AC amplifier and a divider as well as in an optical transmitter, an opticalfiber, an optical sensor, an optical receiver and a DC amplifier can be self- checked bysuperimposing an AC of a frequency higher than the frequency of the physical quantityon a driving current of the optical transmitter and monitoring the components of a signalof a frequency higher than a frequency of the physical quantity.

申请人：MITSUBISHI DENKI KABUSHIKI KAISHA

代理机构：Wolf, Greenfield & Sacks

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