| 摘要 |
PROBLEM TO BE SOLVED: To grasp the amount of stock with high accuracy by surely detecting abnormalities of various mechanisms at an early stage. SOLUTION: In this stock management system, a storage tank 1 into which powder and grain is charged from an upper charge port comprises a discharge device 4 discharging the powder and grain in the storage tank, a weighing tank 7 weighing the amount of discharge with an weighing instrument 6 by putting the powder and grain discharged by the discharge device 4, a management device 8 grasping the stored amount in the storage tank by subtracting the total amount of discharge weighed with the weighing instrument 6 from the total amount of charge of the powder and grain charged into the storage tank. The management device 8 detects the surfaces of the powder and grain in the storage tank by means of a level switch 2 in the storage tank during the process of discharging the powder and grain into the weighing tank 7, compares, by using the residual datum amount in the storage tank previously obtained according to the detection signals, the total amount of charge and the sum of the residual datum amount and the total amount of discharge, and, if the difference between the total amount of charge and the sum is greater than an allowable value, reports the fact via an warning part or the like. COPYRIGHT: (C)2005,JPO&NCIPI
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