Communications: directive radio wave systems and devices (e.g. – Determining distance – Material level within container
Reexamination Certificate
2005-08-16
2005-08-16
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Material level within container
C342S118000, C342S175000, C342S195000, C073S29000R, C073S30400R
Reexamination Certificate
active
06930632
ABSTRACT:
The invention relates to a method and a device for determining the level of a filling (1) in a container (2). The aim of the invention is to provide a method and a device for measuring said level which are economical to carry out/produce and which offer an especially high degree of measuring accuracy. To this end, the inventive method provides that transmit signals are sent in the form of a first binary-weighted pulse sequence of transmit pulses with a predetermined pulse repetition duration (τR) and a predetermined pulse sequence length (L) in the direction of the surface (3) of the filling (1); and the echo signals of the transmit pulses reflected on the surface (3) of the filling (1) are sampled with a second, preferably continuous sequence of sampling pulses of the pulse repetition duration τR, the second pulse sequence being delayed (τS) in relation to the first pulse sequence and the components of the sampling values that correspond to the echo signals with a propagation time of τ=τSbeing retained while components that correspond to echo signals with a propagation time of τS<τ<τS+L·τRare deleted. The level of the filling (1) in the container (2) is determined using the weighted sampling values.
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Lalla Robert
Michalski Bernhard
Schroth Herbert
Bacon & Thomas
Endress & Hauser GmbH & Co. KG
Gregory Bernarr E.
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