| 摘要 |
PURPOSE:To prevent a malfunction of a controller and at the same tome to facilitate an easy change of guide lines by providing an optical signal transmitter of wide-angle optical signal system at the ground side above a guide line. CONSTITUTION:Optical signal transmitters 3 and 4 which transmit signals between the main body 2 of an unmanned truck which travels along a guide line and the ground side 11 above the guide line are provided to the body 2 and the side 11 respectively in a section L of a prescribed length. The transmitter 4 on the ground contains a controller 12 which controls the start and stop over the unmanned truck in the section L via the transmission of signals between the body 2 and the side 11. Thus, it is possible to prevent a malfunction of the controller due to the interference of the control signal transmitted between adjacent guide lines. At the same time, the guide lines can be easily changed in response to a change of production lines, etc. |
