Fiber optic moisture sensor with moisture-absorbing reflective target

Patent · Tue Jan 06 00:00:00 EST 1987

OSTI ID:7121034

Kirkham, R R

A method is described for monitoring environmental moisture changes, comprising the following steps: locating an optical fiber assembly within the environmental area being monitored; transmitting light signals through the optical fiber assembly from a light source to and from a target whose reflectance is a function of the target's moisture content; measuring the returned light reflected by the target; and detecting changes in the light signals transmitted through the optical fiber assembly from the light source as an indication of the moisture conditions to which the optical fiber assembly is subjected.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4634856
• OSTI ID: 7121034
• Resource Relation: Patent File Date: Filed date 3 Aug 1984
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
MOISTURE GAGES
FIBER OPTICS
ABSORPTION
LIGHT SOURCES
LIGHT TRANSMISSION
MOISTURE
MONITORING
OPTICAL FIBERS
REFLECTIVITY
SIGNALS
FIBERS
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATION SOURCES
SURFACE PROPERTIES
440300* - Miscellaneous Instruments- (-1989)