| 摘要 |
PURPOSE:To prevent a plurality of operatorless carriage vehicles from waiting simultaneously for charging by differentiating the setting times of charging period set timers of battery charge warning devices at the respective vehicles. CONSTITUTION:A battery 2 is placed in an operatorless carriage vehicle 5. Battery capacity drop detecting means 21 and a battery timer 1 are attached to the battery 2, and the outputs are connected to an information processing means 3. When the battery is discharged and the detecting means 21 is operated or the set time T of the timer 1 is elapsed, the means 3 generates an alarm through a warning indicator 42, and the vehicle 5 is returned to its home station. When the times T of the timers are differentiated at the respective vehicles, a plurality of the vehicles do not wait simultaneously at the station. |
