Method and apparatus using an electrical sensor for monitoring a

Details Method and apparatus using an electrical sensor for monitoring a Method and apparatus using an electrical sensor for monitoring a

1994-09-21

1996-11-19

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324654, 324686, G01R 2900

Patent

active

055766196

ABSTRACT:
A method is provided for the monitoring of a moving medium (1), in particular the measurement of the filling level in a container or the distance signal of an object (1) to be detected where a sensor (2) is employed. The sensor (2) is subjected at its input to a supply voltage source (Ubs) or a supply current source. In order to suppress relatively slowly changing interfering values, the output signal (Uas) of the sensor (2) is fed back in a feedback loop to the input of the sensor (2) or, respectively, to the supply voltage of the sensor (2). The feedback loop is formed such that the input supply voltage source (Ubs) of the sensor, which is changeable for adjustment of the sensitivity, changes in dependence on the output signal (Uas) of the sensor (2) such that a constant sensitivity is present at all times. In case of an occurrence of a sufficiently fast or, respectively, sufficiently jumpy change larger than 0.01 V/sec. of the output signal (Uas) of the sensor (2) relative to the quiescent output signal (Uw) in case of an absence or, respectively, in case of a presence or rest of the medium (1) in case of a spatial-geometrically moving medium (1), the feedback loop is broken up and interrupted and the interruption of the feedback loop is interpreted as a local change of the medium (1), where the local change is larger than 0.5 mm.

REFERENCES:
patent: 3461382 (1969-08-01), Anderson
patent: 4119918 (1978-10-01), Moser
patent: 5414368 (1995-05-01), Ogawa et al.

Affiliated with

Also associated with

Rating

Method and apparatus using an electrical sensor for monitoring a 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 using an electrical sensor for monitoring a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus using an electrical sensor for monitoring a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-543213