The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
Feb. 14, 2001
Robert Lalla, Lörrach, DE;
Bernhard Michalski, Maulburg, DE;
Herbert Schroth, Schopfheim, DE;
Endress + Hauser GmbH + Co. KG, Maulburg, DE;
Abstract
The invention relates to a method and a device for determining the level of a filling () in a container (). 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 (τ) and a predetermined pulse sequence length (L) in the direction of the surface () of the filling (); and the echo signals of the transmit pulses reflected on the surface () of the filling () are sampled with a second, preferably continuous sequence of sampling pulses of the pulse repetition duration τ, the second pulse sequence being delayed (τ) 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=τbeing retained while components that correspond to echo signals with a propagation time of τ<τ<τ+L·τare deleted. The level of the filling () in the container () is determined using the weighted sampling values.