Perceptron, Inc.

Jesper Christensen

Dale R Greer

Myles Markey, Jr

Stephen James Tenniswood

A temperature compensation system (,) is provided for compensating measurements from a sensor (,). A temperature transducer (,) is placed in close proximity to a manufacturing workstation as a means of measuring the ambient temperature associated with the workstation (,). A reference workpiece (,) is placed within a sensing zone of the sensor (,). The system (,) includes a temperature compensating module (,) that is connected to the sensor (,) and to the temperature transducer (,) for determining a baseline measurement of the reference workpiece at a reference temperature. The temperature compensating module (,) is further adapted for collecting a plurality of measurements of the reference workpiece over a plurality of temperatures for establishing a relationship between these measurements and their corresponding temperature values. In addition, a workpiece measuring module (,) is also connected to the sensor (,) and to the temperature transducer (,) for measuring a first workpiece at a first temperature, whereby the sensor measurement is compensated for temperature using this relationship. In this way, the temperature compensation system (,) compensates the sensor measurement for physical changes in any of the components of the workstation that are caused by fluctuations in ambient temperature. Rather than compensate for ambient temperature changes, the temperature compensation system (,) may also be adapted to compensate sensor measurements based on process driven temperature changes (i.e., a &ldquo;hot&rdquo; workpiece).

Growing community of inventors

Freising, Germany

Jesper Christensen