Title:
FORMING APPARATUS FOR MEASURING REFERENCE SIGNAL OF QUANTITY OF STATE OF PLANT
Document Type and Number:
Japanese Patent JPH049716
Kind Code:
A
Abstract:
PURPOSE:To form a reference signal related to the quantity of state by automatically classifying a signal of the quantity of an optional state in a plant in accordance with the analogy of the changing tendency, and detecting a signal having a different changing tendency as an abnormal signal. CONSTITUTION:For instance, when a reference signal of the flow rate of the supplied water of a power plant is to be formed, an A/D converter 2 takes in various kinds of signals of the flow rate for every constant period, and a characteristic amount calculator 3 calculates the statistical characteristic amount between the signals. Then, a signal classifying device 4 analyzes the cluster of the signals based on the statistical characteristic amount, the result of which is stored in 5. An abnormal signal detector 6 classifies the signals by a predetermined value of the statistical characteristic amount, with notifying a measuring signal of the flow rate which forms a cluster by itself as an abnormal signal and, outputting an identification number to a signal state display device 7 and a signal operating device 8. The signal operating device 8 calculates the average value of the remaining signals after the abnormal measuring signal detected by 6 is removed from the various kinds of input signals, and outputs the value as a reference value of the flow rate of the supplied water.
Inventors:
KONDO TETSUSHI
KANEMOTO SHIGERU
HAMANO JIRO
KANEMOTO SHIGERU
HAMANO JIRO
Application Number:
JP11341290A
Publication Date:
January 14, 1992
Filing Date:
April 27, 1990
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G01D21/00; (IPC1-7): G01D21/00
Attorney, Agent or Firm:
Suyama Saichi
Next Patent: JPH049717