PURPOSE: To detect the present position of a transfer car and an amount of meandering of it, by setting two optical range finders at both sides of a travel path of a transfer car, reflecting projected light rays between the corresponding corner cube groups, detecting the reflected light rays.
CONSTITUTION: The two optical range finders 3 and 3' are set at both sides of the travel path 1 of the transfer car 2, two pairs of the corner cube groups 4 and 4' corresponding to the optical range finders 3 and 3' are laid at the end part of the travel path 1, and the projected light rays 5 and 5' are reflected. The present position of the transfer car 2 is calculated from the average value of the detected values of reflected lights rays of the optical range finders 3 and 3', and the amount of meandering is detected from the variation of both the detected values.
HASEGAWA JIYUN
MATSUURA KATSUHIRO
HIGAKI TAKAHIRO
FUJITA KENJI
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