| 摘要 |
PROBLEM TO BE SOLVED: To track a current position of a cargo without a necessity for electromagnetically or optically reading and recording information of a slip of the cargo basically excepting procedures at sender and at receiver when delivering the cargo fro the sender to a destination. SOLUTION: A cargo position information transmitter 1 is attached to the cargo 8. The cargo position information transmitter 1 is provided with a recording medium recording the information related to the sender of the cargo 8 and the destination, a receiver receiving radio waves carrying reference information for specifying a cargo position, a radio wave navigation device calculating the cargo position using the received reference information, and a transmission means transmitting radio, waves carrying the cargo position information obtained by the radio wave navigation device. Radio waves J carrying the position information transmitted from the transmission means are received in a control center 17 to detect a position of the cargo 8. |
