G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 23/284 (2006.01) G01S 13/10 (2006.01)
Patent
CA 2270453
A level measuring device suitable for highly accurate measurements. A transmission pulse generator generates microwave pulses at a transmission repetition rate and transmits them through an antenna towards a material whose level is to be measured. Echo signal from the surface of the material are received by the antenna. A reference pulse generator generates reference pulses similar to the transmission pulses but at a reference repetition rate which differs form the transmission repetition rate by a small frequency difference. The echo signal and reference pulse are input to a first mixer which generates an intermediate frequency signal that, with respect to the echo signal, is slowed by a time dilation factor equal to the quotient of the transmission repetition rate and the frequency difference. A first subcircuit samples the intermediate frequency signal, the time interval between two successive samplings equaling a time unit. A differential signal generator generates a differential signal which changes with the frequency difference. A second subcircuit determines the period of the differential signal on the basis of the time unit. An evaluation unit determines an actual time interval between two points of the echo signal corresponding to the two sampling points.
Lalla Robert
Muller Roland
Strutt Bernd
Endress + Hauser Gmbh + Co.
Smart & Biggar
LandOfFree
Level measuring device operating with microwave does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Level measuring device operating with microwave, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Level measuring device operating with microwave will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2067569