The device which monitors the temperature state of the isothermal tank making use of the state presumption manner, and its manner inside closed space

摘要

PPROBLEM TO BE SOLVED: To measure the temperature/humidity in a thermohygrostat bath 1 by sensors 5 provided on a plurality of spots respectively in a prescribed number of times; to process data of measured values by a statistical method; and to thereby estimate accurately a temperature/humidity distribution in the whole bath from the restricted number of measured value data. PSOLUTION: Measured values by the sensors 5, 5,... are stored in a data storage part 6a of a controller 6. The measured value data are regarded as samples extracted at random from a virtual set (population) of the measured values in the whole bath, and processed by a method of analysis of variance by an estimation operation part 6d, and a distribution interval in the bath is shown by means of a so-called 95% confidence interval estimated by t-distribution. The estimated distribution interval is displayed together with a tolerance on a display 8. If the distribution interval is deviated from the tolerance, a signal 9 is flickered to issue an warning. PCOPYRIGHT: (C)2009,JPO&INPIT