ULTRASONIC DOUBLE FEED SENSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To improve the S/N ratio of a reception radio wave of each material without causing new inconveniences by considering the application of a carrying device. SOLUTION: The drive voltage of a transmission sensor is increased only when an OHP and a cardboard having a low S/N ratio are selected in transmission type double feed sensing using an ultrasonic sensor. COPYRIGHT: (C)2006,JPO&NCIPI