Thickness determination device, overlap determination device, electronic device, and thickness determination method

摘要

PROBLEM TO BE SOLVED: It is difficult to carry out highly accurate thickness determination in consideration of types of objects and duplication of a plurality of objects. A thickness determination device includes a type determination unit that determines the type of an object, and ultrasonic waves of a plurality of frequencies transmitted to the object, and ultrasonic waves that have passed through the object. An ultrasonic measurement unit that outputs a reception signal corresponding to each frequency, and a frequency corresponding to the reception signal having the maximum signal value among the reception signals corresponding to each frequency output from the ultrasonic measurement unit, A thickness determination unit that determines the thickness of the object based on the type determined by the type determination unit. [Selection diagram] Fig. 9