초록 ▼

The invention concerns an apparatus for digitally measuring the thicknesses of sheets passing between a roller (5) fixed in position and a sensor roller (6) biased toward the fixed roller (5), said apparatus comprising a transducer (2) with at least one input winding, one output winding and with an

The invention concerns an apparatus for digitally measuring the thicknesses of sheets passing between a roller (5) fixed in position and a sensor roller (6) biased toward the fixed roller (5), said apparatus comprising a transducer (2) with at least one input winding, one output winding and with an element (17) sensitive to the position of the sensor roller (6), the transducer input being fed from an oscillator (1). A digital processing unit (4) is connected to the output of the transducer (2) and, on the basis of two measurements, one in the absence of a sheet and the other in the presence of a sheet, issues a digital value of the sheet thickness obtained from the subtraction of the said two measurements.

대표청구항 ▼

[ I claim:] [1.] An apparatus for digitally measuring the thickness of sheets comprising:a fixed roller;a sensor roller biased toward the fixed roller;a transducer with at least one input winding, at least one output winding, and an element coupled to, and sensitive to the position of, the sensor ro

[ I claim:] [1.] An apparatus for digitally measuring the thickness of sheets comprising:a fixed roller;a sensor roller biased toward the fixed roller;a transducer with at least one input winding, at least one output winding, and an element coupled to, and sensitive to the position of, the sensor roller;an oscillator for providing an input to a respective input winding of the transducer; anda digital processing unit coupled to at least one output winding of said transducer for providing a digital representation of sheet thickness based on the digital subtraction of two measurements, one measurement taken in the absence of a sheet and the other measurement taken in its presence.