Force transducer forming a load cell

US9127995B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Dirk Scheibner · Nuremberg, DE
• Arno Steckenborn · Berlin, DE

Key dates

• Filing date: May 11, 2012
• Grant date: Sep 8, 2015
• Expiry date: Aug 21, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01G3/1416
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A force transducer, in particular a weighing cell, includes a spring body, which deforms under the action of a force or load to be measured, and a sensor that includes two separate sensor parts mounted at different locations of the spring body and that generates a sensor signal which is dependent on the relative position of the sensor parts with respect to each other. In order to improve the adaptation of the sensor to the spring body, one of the sensor parts is attached to the spring body with interposition of an electromechanical actuator and a control device is present, which controls the actuator dependent on the sensor signal in the direction of a reduction in the positional difference of the sensor parts.