| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To realize technology capable of accurately recognizing an operation state of utility consumption equipment 20, 30 such as gas consumption equipment, and avoiding false detection of utility supply abnormality in a meter 10 etc. <P>SOLUTION: The utility consumption equipments 20, 30 have variation operation means 22, 32 each executing consumption variation operation varying consumption of a utility according to a prescribed individual variation pattern at a prescribed individual variation period. The meter 10 has an operation state recognition means 17 recognizing the operation state of the utility consumption equipment from a total variation pattern of a total supply amount of the utility. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
