| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a travel position detection sensor of a carrying truck contactless as to unmanned carrying truck facilities. SOLUTION: While a photoelectric sensor 15 consisting of a light emitting unit 15a and a light receiving unit 15b is fitted to a truck which is loaded with a container 21 and can travel by itself along a travel path on a deck, shield plates 16 are installed on the travel path at specific intervals, and the travel position of the truck 10 is detected by counting how many times the optical axis of the photoelectric sensor 15 is cut off by the shield plates 16 as the truck 10 travels, thereby actualizing contactless operation of the position detection sensor.</p> |
