| 摘要 |
PROBLEM TO BE SOLVED: To perform tracking and managing on the install place or operating state of a forwarded product. SOLUTION: A radio wave transmitted from an identification code signal transmitter 13, which is installed integrally with a forwarded product G, during the operation of the forwarded product G is received by identification code signal receivers 21, 22 and 23 loaded on a plurality of artificial satellites S1, S2 and S3, and reported to a forwarded product managing center 33. In the forwarded product managing center 33, the forwarded product G is specified from the received identification code signal, the install place of the forwarded product G is estimated from the positions of the artificial satellites S1, S2 and S3 and the receiving state of the radio wave and the operating state is estimated from the receiving state of the radio wave. Therefore, when the forwarded product is moved from a certain area to the other area, securing of components or the like therefor is moved from a certain area to the other area so that management can be made efficient. When the forwarded product is discarded, it is estimated and the components or the like therefor can be discarded so that useless managing costs can be eliminated. |
