Method and apparatus for sensing ambient conditions at locations

Details Method and apparatus for sensing ambient conditions at locations Method and apparatus for sensing ambient conditions at locations

1991-02-04

1992-11-17

Fields, Carolyn E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

385 12, 385 48, G01N 2101

Patent

active

051645882

ABSTRACT:
An optical fiber connector or coupler (24-54) is provided which partially reflects light travelling in one direction (56) but preferably transmits light without reflection in the opposite direction (58). When such connectors (C.sub.o to C.sub.n) are alternated with ambient environment sensors (S.sub.l to S.sub.n) in an optical fiber transmission path, light pulses launched in the one direction from a source (60) produce reflected light at a detector (62) which reflected light can be correlated to a preselected characteristic of the environment at each sensor. A series of such connectors can be used without sensors to provide reference signals from points along an optical fiber transmission path. A single fiber path can be used, without the need for a separate fiber for feedback.

REFERENCES:
patent: 1320625 (1919-11-01), Kunz
patent: 2279288 (1942-04-01), Orbeck
patent: 3619030 (1971-11-01), Tomil et al.
patent: 3619068 (1971-11-01), Broerman
patent: 4109997 (1978-08-01), Iverson
patent: 4165496 (1979-08-01), Di Domenico, Jr. et al.
patent: 4296995 (1981-10-01), Bickel
patent: 4320291 (1982-03-01), Uramoto
patent: 4325605 (1982-04-01), Winzer et al.
patent: 4398791 (1983-08-01), Dorsey
patent: 4401360 (1983-08-01), Streckmann et al.
patent: 4421384 (1983-12-01), McMahon
patent: 4452505 (1984-06-01), Gasparian
patent: 4459477 (1984-07-01), Asawa et al.
patent: 4460242 (1984-07-01), Birch et al.
patent: 4462699 (1984-07-01), Shaw et al.
patent: 4540237 (1985-09-01), Winzer
patent: 4576436 (1986-03-01), Daniel
patent: 4611884 (1986-09-01), Roberts
patent: 4630255 (1986-12-01), Gouali et al.
patent: 4653845 (1987-03-01), Tremblay et al.
patent: 4653916 (1987-03-01), Hennig et al.
patent: 4682844 (1987-07-01), Mori
patent: 4688884 (1987-08-01), Scifres et al.
patent: 4690490 (1987-09-01), Mori
patent: 4695126 (1987-09-01), Cook
patent: 4699511 (1987-10-01), Seaver
patent: 4736100 (1988-04-01), Vastagh
patent: 4736360 (1988-04-01), McMahon
patent: 4744617 (1988-05-01), Hvezda et al.
patent: 4778248 (1988-10-01), Arzur et al.
patent: 4850665 (1989-07-01), Whitehead
patent: 4867520 (1989-08-01), Weidel
patent: 4872739 (1989-10-01), Kahn et al.
patent: 4928004 (1990-05-01), Zimmermann et al.
patent: 4950886 (1990-08-01), Claus et al.
patent: 4986624 (1991-01-01), Sorin et al.

Affiliated with

Also associated with

Rating

Method and apparatus for sensing ambient conditions at locations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for sensing ambient conditions at locations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sensing ambient conditions at locations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1173668