光ファイバ給電・伝送トランスデュ-サの試作
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概要
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A novel transducer with optical-fiber data link-to provide electrical isolation and immunity from electromagnetic noise-has been developed. A pulse-position (or pulse-frequency) modulated optical signal is transmitted by optical fiber from a remote converter to the mainframe. Light of a different wavelength is transmitted via the same optical fiber from a laser in the mainframe to a photocell battery in the remote converter, to power it. Signal and "power" light beams are separated by dichroic mirrors. A practical thermocouple converter and a tuning-fork converter for sensors are described; they consume only 84μW and 96μW respectively. An optical to pnuematic converter for a valve actuator is also described; it consumes only 280μW. These converters are powered by light from a 5mW semiconductor laser in the mainframe.
- 公益社団法人 計測自動制御学会の論文
公益社団法人 計測自動制御学会 | 論文
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