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RF REMOTE SYSTEM WITH DRIVE-AWAY PREVENTION

机译:带有防走开功能的射频遥控系统

摘要

A drive-away prevention security system used in connection with an RF remote keyless entry system. A microprocessor (14) and associated circuitry are configured within the head (58) of an ignition key (52) for a vehicle such that when a function switch on the key head is activated, a coded signal is transmitted to be received by a receiver within the vehicle. The receiver deciphers the received coded transmission to determine if a valid signal has been transmitted, and performs a vehicle function, such as locking or unlocking the vehicle doors, if the coded signal is valid. When the ignition key (52) is inserted in the ignition switch of the vehicle, an ignition signal is sent to a microprocessor (34) associated with the receiver. The microprocessor causes an on/off signal to be applied to an oscillator (44) at the ignition switch in accordance with a data scheme. The oscillator energizes a coil (L2) at the ignition switch that generates a time-varying magnetic field inductively coupling the magnetic field lines to the coil (L1) within the ignition key. The microprocessor in the key analyzes the data sequence transmitted by the time-varying magnetic field, and emits the coded signal if the time-varying magnetic field is valid. The receiver receives the coded beacon signal and causes a start/enable signal to be sent to an engine module if the signal is valid.
机译:与RF远程无钥匙进入系统结合使用的防逃逸安全系统。在用于车辆的点火钥匙(52)的头部(58)内配置有微处理器(14)和相关的电路,使得当激活钥匙头部上的功能开关时,编码信号被发送以被接收器接收。在车辆内。接收器对接收到的编码传输进行解密,以确定是否已经发送了有效信号,并且如果编码信号有效,则执行车辆功能,例如锁定或解锁车门。当点火钥匙(52)插入车辆的点火开关中时,点火信号被发送到与接收器相关的微处理器(34)。微处理器根据数据方案使开/关信号被施加到点火开关处的振荡器(44)。振荡器为点火开关上的线圈(L2)供电,该线圈产生随时间变化的磁场,该磁场将磁场线感应耦合到点火钥匙内的线圈(L1)。钥匙中的微处理器分析随时间变化的磁场传输的数据序列,如果随时间变化的磁场有效,则发出编码信号。接收器接收编码的信标信号,并且如果该信号有效,则将启动/启用信号发送到引擎模块。

著录项

  • 公开/公告号EP0799358B1

    专利类型

  • 公开/公告日2002-03-27

    原文格式PDF

  • 申请/专利权人 LEAR AUTOMOTIVE DEARBORN INC;

    申请/专利号EP19950943750

  • 发明设计人 PROKUP JAMES M.;

    申请日1995-12-13

  • 分类号E05B49/00;B60R25/04;

  • 国家 EP

  • 入库时间 2022-08-22 00:36:15

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