| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an active tag system equipped with an interrogator which can effectively control entering/leaving and be easily installed. <P>SOLUTION: The active tag system includes the interrogator 1 provided with an interrogation transmitting section 11 for wirelessly transmitting an interrogation, and a response receiving section 14 for receiving a response signal returned from a responder 2; and the responder 2 provided with an interrogation receiving section 21 for receiving the interrogation signal, a response transmitting section 24 having individual identification information and wirelessly returning a response signal including its own identification information upon receiving the interrogation signal, and a battery 28 for supplying operation power of the responder 2. The interrogation transmitting section 11 has a transmission loop antenna 12 for generating a magnetic field 3. The active tag system is provided with the two interrogators 1, wherein the interrogators 1 are each fixed in a state where a center axis 41 of the transmission loop antenna 12 owned by each interrogator 1 is line-symmetry for a perpendicular plane and inclined, and the interrogation receiving section 21 can receive only the one-direction field effect component. <P>COPYRIGHT: (C)2008,JPO&INPIT |
