| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the occurrence of failure due to repeated service interruptions. SOLUTION: The threshold of a number of service interruptions, that occurs during period of time, is stored. The number of occurrences of service interruption during period of time, in a main power supply is calculated. The number of occurrences of service interruption is compared with the threshold. If the result of the comparison reveals that the number of occurrences of service interruption is higher than the threshold, that is notified as a failure.</p> |
