Patent ID: 7424394

Claim:
A utility diagnosing equipment for diagnosing a plurality of utilities of an identical type on the basis of state values from the utilities, comprising: state value accepting means for accepting said state values from said plurality of utilities; state value memory means for storing, for each utility, a time-series state value of each utility; completing means for estimating a missing state value in the time-series state value of each utility stored in said state value memory means; proxy value calculating means for taking statistics of the state values from said respective utilities to calculate a proxy value representative of states of each utility; relative value calculating means for finding a relative value for each utility between the state value of each utility and said proxy value; and output means for outputting said relative value for each utility and/or utility identification information about the utility when said relative value exceeds a predetermined range; wherein said proxy value calculating means calculates a completed proxy value at each time as said proxy value with use of the state value at each time estimated by said completing means, and said output means outputs said relative value for each utility and/or utility identification information about the utility when said relative value exceeds a predetermined range; and wherein said completing means finds a moving average of the state values of the utilities at the respective times as a moving average width of a predetermined time width and completes the missing state value.