Mobile object tracking and tracing method especially for container lorry

摘要

The method involves arranging one or several selected mobile objects (1) in the radio field of an alarm signal (2) provided by an alarm transmitter. Transponders (4) of the mobile objects are activated and data are transmitted to the transponders via the alarm transmitter and stored. Radio reading and writing stations exchange characteristic data of an object which are stored in the transponders and the previous transmitted data. Additional data can also be transmitted. The transmitting signal frequency of the radio reading and writing stations and of the transponders are different from the transmitting frequencies of the alarm transmitter.