| 摘要 |
PROBLEM TO BE SOLVED: To provide a security system for highly precisely specifying the location of a transmitter. SOLUTION: This security system is provided with a plurality of transmitters/receivers 1<SB>1</SB>, 1<SB>2</SB>, 1<SB>3</SB>to 1<SB>n</SB>installed at least in each alley of the school-commuting roads of a transmitter owner for receiving an emergency signal E containing identification information to be transmitted from a transmitter, and for transmitting emergency situation occurrence signal F containing the received identification information and location specification information for specifying the location of the transmitter and a notification means 3 for specifying a customer from the identification information when receiving the emergency situation occurrence signal F, and for specifying the location of the transmitter 2, and for notifying the customer of the emergency situation occurrence and the location of the transmitter. COPYRIGHT: (C)2007,JPO&INPIT
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