ENTRANCE AND EXIT CONTROL SYSTEM, ON-VEHICLE EQUIPMENT, ENTRANCE AND EXIT CONTROL METHOD, CONNECTION AND DISCONNECTION DETECTION METHOD OF ON-VEHICLE EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To correspond to malfeasance due to burglary and wrong exchange of on-vehicle equipment and an IC card.;SOLUTION: This on-vehicle equipment 30 of an ETC system has a connection and disconnection detection function for detecting the removal of a car mounting equipment body 31 from a vehicle (harness 36 for connection and disconnection detection, connector 37, battery 35 for connection and disconnection detection, etc.), and a radio communication function for transmitting on-vehicle equipment connection and disconnection information of a memory, at radio communication with antennas 13, 23 of ETC system.;COPYRIGHT: (C)2002,JPO