| 摘要 |
PROBLEM TO BE SOLVED: To travel a carrier wagon along with a traveling course without being affected by the traveling speed of carrier wagon. SOLUTION: This device is composed of a bar code scanner 3 installed facing the side of carrier wagon 2 in the posture of optical scanning orthogonal with the traveling direction of carrier wagon and a lot of bar codes 1 provided on the traveling course wall of carrier wagon 2 facing this bar code scanner 3 along with the traveling direction of carrier wagon so that respective bars can be almost parallel with the traveling direction of carrier wagon 2. |
