Body detector

Details Body detector Body detector

G - Physics

08

B

G08B 21/00 (2006.01) G08B 21/22 (2006.01) G08B 29/18 (2006.01)

Patent

CA 2134930

BODY DETECTOR ABSTRACT OF THE DISCLOSURE A body detector (10) detects when a body (12) is absent from a region (26) being monitored. The body (12) has a different dielectric constant than air. The region (26) is configured as a capacitor (20) in which the body (12), if present, serves as a dielectric. The capacitance of the capacitor (20) is measured (28). This measurement influences a baseline value (34). The capacitance is measured (38) a second time. The second measurement is checked to verify that it is within minimum (42) and maximum (46) values. In addition, it is checked to verify that it is within a more narrow range (54) that is defined in response to the baseline value. The second measurement is then used to adjust the baseline value and the process repeats. The range (54) within which the capacitance must stay slowly adapts to changes in the capacitance of the capacitor (20). Abrupt changes in the capacitance cause an alarm to be annunciated.

Affiliated with

Also associated with

Rating

Body detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Body detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Body detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1513112