Coin sensor, effective value calculation method, and coin recognition device

摘要

A thickness/material sensor samples an output signal output from a self-oscillating circuit at a specific sampling interval; acquires sampling data sampled in a specific sampling time period; reduces, among the acquired sampling data, a weight on the sampling data sampled near both ends of the specific sampling time period than a weight on other sampling data and outputs weighted sampling data; and calculates effective values of an output signal in the specific sampling time period from the weighted sampling data.