Device for capturing and transferring a measured value, series connection, system for capturing and transferring measured values, and household appliance

US8339169B2 · kind B2 · utility

Assignee

• PRETTL Home Appliance Solutions GmbH · DE

Inventors

• Dieter Genschow · Berlin, DE
• Olaf Krause · Neuruppin, DE

Key dates

• Filing date: Dec 16, 2011
• Grant date: Dec 25, 2012
• Expiry date: Dec 16, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D21/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device includes a logic circuit having first, second, and third input ports, a first output port, and a feedback path between the first output port and the third input port. In a first operating state, a logic state change at the first input port triggers a logic state change at the first output port, but a logic state change at the third input port does not trigger a logic state change at the first output port. This allows signals to be routed through the device. In a second operating state, a logic state change of the third input port triggers a logic state change of the first output port. This change is fed back, delayed by a time value, to the third input to maintain an oscillation with at least two edges. The frequency of this oscillation is used to determine a value of a measurement variable.