Signal generator for a measuring apparatus and measuring apparatus for automation technology

US10061344B2 · kind B2 · utility

Assignee

• ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

• Stefan Rummele-Werner · Lörrach, DE
• Dietmar Frühauf · Bad Kötzting, DE
• Armin Wernet · Rheinfelden (Baden), DE
• Kaj Uppenkamp · Wehr, DE
• Gerd Bechtel · Steinen, DE

Key dates

• Filing date: Jun 2, 2014
• Grant date: Aug 28, 2018
• Expiry date: Jan 3, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F1/0328
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A signal generator for producing periodic signals for a measuring apparatus of automation technology. The signals have sequential, discrete signal frequencies, which lie within a predetermined frequency range. A control- and/or computing unit, a clock signal producer are provided, wherein the clock signal producer provides a constant sampling frequency, which is greater than the maximum discrete signal frequency in the predetermined frequency range. A memory unit is provided, in which for each of the discrete signal frequencies the amplitude values of the corresponding periodic signals are stored or storable as a function of the sampling frequency. The control- and/or computing unit reads out the stored or storable amplitude values of the discrete frequencies successively with the sampling frequency of the clock from the memory unit and produces the periodic signals, or forwards for producing. A static filter unit, is also provided with a limit frequency, which lies above the maximum signal frequency and which removes frequency fractions caused by the sampling.