| 摘要 |
<p>PURPOSE:To prevent an accident and runaway of a computer by turning on/off a main power source based on output data from a backed-up time detector. CONSTITUTION:An unattended carriage consists of a time detector 2, a backup power source 1 which always operates the detector 2, an automatic power-on/off device 3 which turns on/off a main power source 4 to supply power to a running controller 5, a driving device 6, and a gyrosensor 7, etc. When the time obtained by subtracting the warming-up time from a preliminarily set time comes, the time detector 2 outputs data to the automatic power-on/off device 3. This device 3 turns on the main power source 4 in accordance with this data to supply power to the running controller 5 and the driving device 6, thus warming up each device. When a carrying command is not issued for a certain time after a preliminarily set end time, termination of all of the work is judged to return the vehicle to a prescribed position and the main power source 4 is turned off.</p> |
