Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-11-28
2006-11-28
Epps, Georgia (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227110, C385S012000, C073S170320
Reexamination Certificate
active
07141815
ABSTRACT:
Arrays of optical fibers connected to specially configured electronics, e.g., a phototransistor, an LED, an amplifier, a detector, and display, software and PCMCIA A/D board available on a personal computer, are used to obtain continuous real-time acquisition, processing, and visualization of change in a media occurring in natural environments. Alternatively, many of the individual circuit elements above may be replaced with a power meter. In a specific application, data are collected on the depth of sediment below a body of water. As the sediment depth is changed by an event, the ends of the optical fibers in the array display a different reflection or transmission coefficient indicating that water has replaced sediment or vice versa. By knowing which of the optical fiber ends in the array is indicating the changed reflection or transmission coefficient, scour depth or silt accretion may be estimated. A method of employment of the system is also described.
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Baugher Jr. Earl H.
Bui-Pho Pascal M.
Epps Georgia
The United States of America as represented by the Secretary of
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