Vehicle-mounted electronic control apparatus

    公开(公告)号:US08046127B2

    公开(公告)日:2011-10-25

    申请号:US12471810

    申请日:2009-05-26

    IPC分类号: G01M17/00 G06F7/00 G06F19/00

    CPC分类号: H02J9/061 B60R16/03

    摘要: A vehicle-mounted electronic control apparatus can perform a variety of abnormality detections while reducing the control load of a microprocessor in the abnormality detection of a volatile backup memory that is backed up by an on-board battery. The apparatus includes a control CPU which is fed with power from a main power supply circuit upon closure of a power switch, a nonvolatile control memory and a backup memory. Even if the power switch is opened, the backup memory, being a partial area of a RAM memory, is fed with power through an auxiliary power supply circuit connected directly to the battery. When the battery is replaced with a new one and connected again, a power supply interruption monitoring memory is reset. At the start of operation of the control CPU, the backup memory is initialized based on reset information, and the power supply interruption monitoring memory is rewritten into a set state.

    ON-VEHICLE ELECTRONIC CONTROL DEVICE
    13.
    发明申请
    ON-VEHICLE ELECTRONIC CONTROL DEVICE 有权
    车载电子控制装置

    公开(公告)号:US20100004811A1

    公开(公告)日:2010-01-07

    申请号:US12402186

    申请日:2009-03-11

    IPC分类号: G06F19/00

    CPC分类号: G07C5/085

    摘要: Provided is an on-vehicle electronic control device with low cost and low power consumption for performing monitoring control in both a driving mode and a parking mode of a vehicle. A main CPU is supplied with electric power from an on-vehicle battery via a power switching element and a main power supply circuit so as to control a plurality of electric loads in accordance with operating states of a plurality of input sensors. A sub CPU connected to the main CPU via a serial interface is supplied with electric power from the on-vehicle battery via a sub power supply circuit so as to monitor operations of the main CPU and input signals. The sub CPU has low speed and small memory capacity so as to operate with lower power consumption compared with the main CPU.

    摘要翻译: 提供一种具有低成本和低功耗的车载电子控制装置,用于在车辆的驾驶模式和停车模式下进行监视控制。 主CPU通过电源开关元件和主电源电路从车载电池供电,以便根据多个输入传感器的操作状态来控制多个电负载。 经由串行接口连接到主CPU的副CPU通过副电源电路从车载电池供电,以监视主CPU和输入信号的操作。 子CPU具有低速度和小的存储容量,与主CPU相比具有较低的功耗运行。

    Car-mounted electronic control device
    14.
    发明授权
    Car-mounted electronic control device 有权
    车载电子控制装置

    公开(公告)号:US07343509B2

    公开(公告)日:2008-03-11

    申请号:US10953918

    申请日:2004-09-30

    IPC分类号: G06F7/00 H04N9/89

    摘要: The car-mounted electronic control device is constructed to include a main control circuit unit to be powered with a car-mounted battery through a switching element and a main power source circuit, and a starting timer circuit unit powered at all times through an auxiliary power source circuit. The timer circuit unit is provided with a sub CPU for acting in synchronism with a high-speed clock signal, and a timing counter for counting the frequency-divided signal of a low-speed clock signal. When a power source switch is opened to interrupt a switching element, the timer circuit unit measures a target awakening time periodically by contrasting the period of the low-speed clock signal to the period of the high-speed clock signal.

    摘要翻译: 车载电子控制装置被构造成包括通过开关元件和主电源电路用汽车电池供电的主控电路单元,以及始终通过辅助电源供电的起动定时器电路单元 源电路。 定时器电路单元设置有用于与高速时钟信号同步地操作的副CPU以及用于对低速时钟信号的分频信号进行计数的定时计数器。 当电源开关打开以中断开关元件时,定时器电路单元通过将低速时钟信号的周期与高速时钟信号的周期进行对比来周期性地测量目标唤醒时间。

    Car-mounted electronic control device
    15.
    发明申请
    Car-mounted electronic control device 有权
    车载电子控制装置

    公开(公告)号:US20050228562A1

    公开(公告)日:2005-10-13

    申请号:US10953918

    申请日:2004-09-30

    摘要: The car-mounted electronic control device is constructed to include a main control circuit unit to be powered with a car-mounted battery through a switching element and a main power source circuit, and a starting timer circuit unit powered at all times through an auxiliary power source circuit. The timer circuit unit is provided with a sub CPU for acting in synchronism with a high-speed clock signal, and a timing counter for counting the frequency-divided signal of a low-speed clock signal. When a power source switch is opened to interrupt a switching element, the timer circuit unit measures a target awakening time periodically by contrasting the period of the low-speed clock signal to the period of the high-speed clock signal.

    摘要翻译: 车载电子控制装置被构造成包括通过开关元件和主电源电路用汽车电池供电的主控电路单元,以及始终通过辅助电源供电的起动定时器电路单元 源电路。 定时器电路单元设置有用于与高速时钟信号同步地操作的副CPU以及用于对低速时钟信号的分频信号进行计数的定时计数器。 当电源开关打开以中断开关元件时,定时器电路单元通过将低速时钟信号的周期与高速时钟信号的周期进行对比来周期性地测量目标唤醒时间。