| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a cost and to facilitate implementation of means which surely transmits a travel permitting signal, from a land side, to all carrier travelling bodies 1 in a working area WA. <P>SOLUTION: Each carrier travelling body 1 has: data communication means 13 and 14 to perform data communication between the carrier travelling bodies 1 neighboring each other in a working area WA; and an on-board communication device 15 to perform the data communication with an on-land communication device. The on-land communication devices 18a and 18b, which transmit a travelling permitting signal to the on-board communication device 15 mounted on the passing carrier travelling body, are arranged at one edge section of the working area WA. The carrier travelling body then transmits the received travelling permitting signal from the on-land communication devices 18a and 18b to all the carrier travelling bodies 1 in the working area WA through the data communication means 13 and 14 to enable each carrier travelling body 1 to be self-propelling at an operation speed based on the received travelling permitting signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
