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Wireless Infrared Data LinkInfrared transmitter and receiver designed for wireless transmission of information on measured physical quantity (for example, temperature) from transducer device to remote-acquisition system. In transmitter, output of transducer amplified and shifted with respect to bias or reference level, then fed to voltage-to-frequency converter to control frequency of repetition of current pulses applied to infrared-light-emitting diode. In receiver, frequency of repetition of pulses converted back into voltage indicative of temperature or other measured quantity. Potential applications include logging data while drilling for oil, transmitting measurements from rotors in machines without using slip rings, remote monitoring of temperatures and pressures in hazardous locations, and remote continuous monitoring of temperatures and blood pressures in medical patients, who thus remain mobile.
Document ID
19950070300
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Roth, Timothy E.
(Allied Signal Technical Services Corp.)
Date Acquired
August 16, 2013
Publication Date
October 1, 1995
Publication Information
Publication: NASA Tech Briefs
Volume: 19
Issue: 10
ISSN: 0145-319X
Subject Category
Electronic Components And Circuits
Report/Patent Number
MSC-22567
Accession Number
95B10479
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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