| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To conduct automatic water supply to a paddy field in a paddy region where commercial electric power is not available, so that operations for filling the field with water and for patrolling to monitor the water thereafter are saved. <P>SOLUTION: A water source P and the paddy field G are connected to each other by a water pipe 30 equipped with a water pump 20, and then the water pump 20 is operated by electric power generated by a photovoltaic power generating panel 10, so as to keep a water level of the paddy field G constant based on a detected signal which is given by a level sensor for detecting a water level L2 of the paddy field G. <P>COPYRIGHT: (C)2004,JPO</p> |
