Vehicle remote communication system command verification method
    1.
    发明授权
    Vehicle remote communication system command verification method 失效
    车辆远程通信系统命令验证方法

    公开(公告)号:US07254375B2

    公开(公告)日:2007-08-07

    申请号:US10801911

    申请日:2004-03-16

    CPC分类号: B60R25/24 B60R25/209 H04L1/16

    摘要: The present invention concerns a method for verifying a command in a vehicle remote communication system. The remote communication system includes a remote transmitter, and a vehicle body having a receiver module and a control module connected by a communication bus disposed therein. The control module is in communication with at least one vehicle system. The remote transmitter transmits an activation signal that is received and decoded by the receiver module. The receiver module transmits a first message along the communication bus that is received by the control module. The control module transmits an acknowledgment message that is received by the receiver module. The receiver module re-transmits the first message that is received by the control module. The control module then initializes a vehicle system command to the vehicle system, thereby preventing an inadvertent activation of the vehicle system.

    摘要翻译: 本发明涉及一种用于验证车辆远程通信系统中的命令的方法。 远程通信系统包括远程发射机,以及具有接收机模块和通过设置在其中的通信总线连接的控制模块的车体。 控制模块与至少一个车辆系统通信。 远程发射机发送由接收机模块接收和解码的激活信号。 接收机模块沿着通信总线发送由控制模块接收的第一消息。 控制模块发送由接收机模块接收的确认消息。 接收机模块重新发送由控制模块接收的第一消息。 控制模块然后将车辆系统命令初始化到车辆系统,从而防止车辆系统的无意的激活。

    Method of determining cam phase angle

    公开(公告)号:US06612162B2

    公开(公告)日:2003-09-02

    申请号:US09725443

    申请日:2000-11-29

    IPC分类号: G01M1500

    CPC分类号: G01M15/06

    摘要: A method of determining the phase angle of an internal combustion engine camshaft relative to a crankshaft of the engine, which significantly reduces the computational burden compared to conventional methods. The cam and crankshaft position pulses are identified by corresponding clock values, and the cam phase angle relative to the crankshaft is determined by computing a simple ratio of first and second time intervals based on the clock values, and multiplying the ratio by a known angle. One of the time intervals is defined by a time difference between successive crankshaft and camshaft pulses, while the other time interval is defined by a time difference between successive crankshaft pulses. The known angle is the angle of crankshaft rotation between the successive crankshaft pulses. The cam phase angle velocity is obtained by determining a change in cam phase angle, and dividing by the intervening time interval.