Apparatus and method for sensing an object within a monitored zo

Details Apparatus and method for sensing an object within a monitored zo Apparatus and method for sensing an object within a monitored zo

1999-09-13

2000-04-25

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

3405731, 340552, 340556, 340557, G08B 2300

Patent

active

060549270

ABSTRACT:
An apparatus for detecting the presence or absence of an object within a monitor zone includes a sensor (12) operative to sense a condition of the monitored zone (Z) and provide a sensor signal indicative thereof. The sensor signal is processed, preferably according to two different transfer functions, to provide first and second signals that vary based on the sensor signal. A comparator (46) provides a comparator signal that varies as a function of the first and second signals. Additional circuitry (58) is operative to provide an indication of the presence or absence of an object within the monitored zone (Z) as based on the comparator signal.

REFERENCES:
patent: 3999083 (1976-12-01), Bumgardner
patent: 4142116 (1979-02-01), Hardy, Jr. et al.
patent: 4851661 (1989-07-01), Everett, Jr.
patent: 4973837 (1990-11-01), Bradbeer
patent: 4992675 (1991-02-01), Conner, Jr. et al.
patent: 5095203 (1992-03-01), Sato et al.
patent: 5122796 (1992-06-01), Beggs et al.
patent: 5243181 (1993-09-01), Bondarev et al.
patent: 5250801 (1993-10-01), Grozinger et al.
patent: 5337251 (1994-08-01), Pastor
patent: 5463384 (1995-10-01), Juds
patent: 5506567 (1996-04-01), Bichlmaier et al.
patent: 5600305 (1997-02-01), Stafford et al.
patent: 5854588 (1996-10-01), Dockery
patent: 5886632 (1997-11-01), Shpater

Affiliated with

Also associated with

Rating

Apparatus and method for sensing an object within a monitored zo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for sensing an object within a monitored zo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for sensing an object within a monitored zo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-996820