Strain gage having an attached unstrained area for the mounting of signal conditioning components

摘要

A weight sensor for measuring a weight applied to the sensor. The sensor includes a substrate that has a center section that is adapted to flex in response to the applied weight and a step section that is attached to the center section. The step section concentrates the weight onto to the center section. Strain gage resistors are mounted on the center section of the substrate for generating an electrical signal in response to the substrate being flexed. A wing section is attached to the center section. The wing section is out of the weight path and does not flex. The wing section contains signal conditioning electronics operative to condition the electrical signal.