Method and device for the open-load diagnosis of a switching stage

    公开(公告)号:US06456156B1

    公开(公告)日:2002-09-24

    申请号:US10011876

    申请日:2001-11-05

    IPC分类号: G05F110

    摘要: A method and a device for an open-load diagnosis of a switching stage includes the steps of turning off the switching transistor if, after a first delay time has elapsed since an appearance of a control signal, the output voltage is less than a first reference voltage, and if, after a second delay time has elapsed, the output voltage is less than a second reference voltage, then, with the switching transistor in the on state again, comparing the output current flowing through the switching transistor with a reference current, and if the output current is less than the reference current, effecting an open-load indication. The device includes a switchable buffer amplifier; a switching transistor, second and third transistors, a reference current source, first and second comparators, and a control circuit connected to the buffer amplifier, to the second and third transistors, and to the first and second comparators.

    Anti-theft system for a motor vehicle
    2.
    发明授权
    Anti-theft system for a motor vehicle 失效
    汽车防盗系统

    公开(公告)号:US5616966A

    公开(公告)日:1997-04-01

    申请号:US554821

    申请日:1995-11-07

    IPC分类号: G07C9/00 E05B47/00

    摘要: An anti-theft system for a motor vehicle includes a portable transponder carrying code information. A stationary transceiver has an oscillator and an oscillating circuit being excited to oscillate by the oscillator at an oscillation being modulated by the transponder in synchronism with the code information. A demodulator demodulates the modulated oscillation of the oscillating circuit. According to one embodiment, the code information is obtained from the demodulated oscillation by sampling the oscillation at least at one predetermined sampling time. An arithmetic unit compares the code information with command code information and transmits an enable signal to a security unit if a match occurs. The modulated oscillation being shifted by a predetermined phase angle is sampled once again if initially no code information is recognized from the demodulator. According to another embodiment, the modulated oscillation containing the code information is sampled at least at two predetermined times being phase-shifted from one another by a predetermined phase angle and the code information is obtained from voltage values detected at the sampling times. The arithmetic unit compares the code information with the command code information and transmits an enable signal to a security unit if a match occurs.

    摘要翻译: 用于机动车辆的防盗系统包括携带代码信息的便携式转发器。 固定收发器具有振荡器,并且振荡电路被激励以由振荡器以与代码信息同步的由应答器调制的振荡来振荡。 解调器解调振荡电路的调制振荡。 根据一个实施例,通过至少在一个预定采样时间对振荡进行采样从解调振荡中获得码信息。 算术单元将代码信息与命令代码信息进行比较,并且如果匹配发生,则向安全单元发送使能信号。 如果最初没有从解调器识别出代码信息,则调制振荡被移位预定相位角再次被采样。 根据另一个实施例,包含码信息的调制振荡至少在两个预定时间采样,彼此相移一个预定的相位角,并且从采样时间检测的电压值获得码信息。 算术单元将代码信息与命令代码信息进行比较,并且如果匹配发生,则向安全单元发送使能信号。

    Ignition device, controller and ignition unit for an internal combustion engine
    3.
    发明授权
    Ignition device, controller and ignition unit for an internal combustion engine 失效
    点火装置,控制器和内燃机点火装置

    公开(公告)号:US06799564B2

    公开(公告)日:2004-10-05

    申请号:US10723217

    申请日:2003-11-26

    IPC分类号: F02D3045

    CPC分类号: F02P3/0456 F02P3/053

    摘要: An ignition device (2) for an internal combustion engine, a controller (1) for said ignition device (2) and an ignition unit comprising the ignition device (2) and controller (1) are disclosed, whereby the controller (1) is linked to the ignition device (2) by means of a bi-directional control line (5).

    摘要翻译: 公开了一种用于内燃机的点火装置(2),用于所述点火装置(2)的控制器(1)和包括点火装置(2)和控制器(1)的点火单元,由此控制器(1) 通过双向控制线(5)与点火装置(2)连接。

    Ignition system for an internal combustion engine
    4.
    发明授权
    Ignition system for an internal combustion engine 失效
    内燃机点火系统

    公开(公告)号:US06792926B2

    公开(公告)日:2004-09-21

    申请号:US10723214

    申请日:2003-11-26

    IPC分类号: F02P312

    CPC分类号: F02P3/053 F02P3/0456

    摘要: An ignition system (1, 2, 41) for an internal combustion engine is provided with an outlet for electric activation of an ignition element (9) for a combustion element in an internal combustion engine, an energy accumulator (3) for accumulating the electric energy, a control element (4) which is connected to the energy accumulator (3) and which is used to charge the energy accumulator (3) during a predefined charging time, in addition to a measuring unit for detecting the charge state of the energy accumulator (3). In order to set the charge time for the energy accumulator, a timer is provided, said timer being connected to the control element (4) on the outlet side, and the measuring unit (6, 10-12) is connected to said timer in a feedback loop, whereby the timer adjusts the charge time according to the charge state of the measured charge state of the energy accumulator.

    摘要翻译: 一种用于内燃机的点火系统(1,2,41)设置有用于电动启动用于内燃机中的燃烧元件的点火元件(9)的出口,用于累积电力的蓄能器(3) 能量,控制元件(4),其连接到所述蓄能器(3),并且用于在预定义的充电时间期间对所述蓄能器(3)充电,以及用于检测所述能量的充电状态的测量单元 蓄能器(3)。 为了设置蓄能器的充电时间,设置有定时器,所述定时器连接到出口侧的控制元件(4),测量单元(6,10-12)连接到所述定时器 反馈回路,由此定时器根据所测量的蓄能器的充电状态的充电状态调节充电时间。

    Anti-theft system for a motor vehicle
    5.
    发明授权
    Anti-theft system for a motor vehicle 失效
    汽车防盗系统

    公开(公告)号:US5889471A

    公开(公告)日:1999-03-30

    申请号:US610328

    申请日:1996-03-04

    摘要: In an anti-theft system for a motor vehicle, an oscillating circuit of a transceiver in the motor vehicle is modulated with code information of a portable transponder. A demodulator detects the code information and carries it onward to a computer unit, where it is checked for authorization. Component tolerance or temperature changes can mean that initially no code information will be demodulated, despite a properly functioning transponder. According to the invention, the frequency of the modulated oscillation is then measured and reregulated to a command frequency.

    摘要翻译: 在机动车辆的防盗系统中,通过便携式应答器的代码信息调制机动车辆中的收发器的振荡电路。 解调器检测代码信息并将其携带到计算机单元,在那里检查其授权。 组件公差或温度变化可能意味着,尽管正常工作的应答器,最初也不会解调码信息。 根据本发明,然后测量调制振荡的频率并重新调节到指令频率。