| 摘要 |
<p>PURPOSE:To warn the cleaning time of a foreign matter stuck on a spherical body. CONSTITUTION:The cumulative moving distance of a ball 8 is obtained by calculating the movement of the ball 8 by calculating count values from an X-axis encoder 21 and a Y-axis encoder 23, and summing these successively. When this cumulative moving distance exceeds a prescribed value, an LED 18 is lighted so as to warn that it is the time of needing to clean.</p> |
