Trigger signal generating device and moving object management system

摘要

A trigger signal generating device outputs a trigger signal activating an IC tag. The trigger signal generating device includes first and second trigger coils placed at a predetermined separation distance and each having predetermined magnetic field intensity distribution. Each of the first and second trigger coils includes attenuating means for attenuating intensity of a magnetic field generated by the first and second trigger coils to a predetermined level that allows the ID tag to detect trigger IDs of the first and second trigger coils on a side on which the first and second trigger coils are provided, and that does not allow the ID tag to detect the trigger ID of the first trigger coil on an opposite side to the side on which the first and second trigger coils are provided.

主权项

1. A trigger signal generating device that outputs a trigger signal activating an IC tag, comprising:
first and second trigger coils placed so as to face each other at a predetermined separation distance and each having a predetermined magnetic field intensity distribution; and attenuating means for attenuating an intensity of a magnetic field generated by said first and second trigger coils to a predetermined level that allows said ID tag to detect trigger IDs of said first and second trigger coils on a side on which said first and second trigger coils are provided, and that does not allow said ID tag to detect said trigger ID of said first trigger coil on an opposite side to said side on which said first and second trigger coils are provided.