| 摘要 |
<p>A coin discriminating device is constructed such that a timing sensor section detects a coin by using a first sensor and a second sensor which detect whether or not a circular object is present and are arranged at positions which are located on a conveying surface with which the front side or the rear side of the coin make contact and on a straight line not parallel to the direction of conveyance of the coin, a passage time calculating section calculates both a first passage time which is a time after the first sensor detects the coin until the first sensor becomes not to detect the coin and a second passage time which is a time after the second sensor detects the coin until the second sensor becomes not to detect the coin, and a diameter calculating section calculates the diameter of the coin based on an orthogonal distance which is the distance between the first and second sensors which is projected to an axis orthogonal to the conveying direction on the conveying surface, the first and second passage times calculated, and a predetermined conveying speed.</p> |
