SENSOR SOUNDNESS DIAGNOSTIC DEVICE, SENSOR SOUNDNESS DIAGNOSIS METHOD, PLANT DIAGNOSTIC SYSTEM WITH SENSOR SOUNDNESS DIAGNOSTIC DEVICE AND PLANT DIAGNOSTIC METHOD BY USING SENSOR SOUNDNESS DIAGNOSIS

摘要

PROBLEM TO BE SOLVED: To provide a technique for facilitating maintenance of a sensor.;SOLUTION: A sensor soundness diagnostic device includes: a drift quantity calculation unit 21 for calculating a drift amount of output data of a sensor input; a drift speed calculation unit 22 for calculating a drift speed from the drift amount calculated by the drift quantity calculation unit; a drift speed prediction unit 25 for calculating a curve presenting a predicted drift speed of the sensor; and a sensor remaining life calculation unit 26 for obtaining a time coinciding with the drift speed on the curve of the predicted drift speed and obtaining a remaining time left until a time elapsed before reaching an indication accuracy which is an allowable limit value of the drift amount from the obtained time.;COPYRIGHT: (C)2014,JPO&INPIT