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    • 7. 发明专利
    • Fault detector
    • 故障检测器
    • JP2003293834A
    • 2003-10-15
    • JP2002096103
    • 2002-03-29
    • Mitsubishi Electric Corp三菱電機株式会社
    • FUKUZAWA YOSUKE
    • F02D45/00F02D41/20F02D41/22F02D41/24
    • F02D41/221F02D41/20F02D41/249F02D2041/2051F02D2041/2089F02D2041/2093F02D2041/227Y02T10/40
    • PROBLEM TO BE SOLVED: To solve a problem in storing information in a storage wherein a mechanism or contrivance considering information capacity of the storage or reliability of the storage is needed, which leads to increases in a load and cost of a system. SOLUTION: The fault detector is provided with a transistor 31 driving an exciting coil of a relay 2 connected to a battery 1, power supply monitors 32 and 33 monitoring an output of the relay, an EEPROM 341A storing fault existence information, and a microcomputer 34A writing the fault existence information into the EEPROM when a power supply is turned off, reading the fault existence information from the EEPROM when the power supply is turned on, and determining a fault condition on the basis of a voltage value detected by the power supply monitors when there is a fault. A similar function is realized by minimizing an increase of a storage capacity of the storage. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:为了解决存储信息的问题,其中需要考虑存储或存储的可靠性的信息容量的机制或设计,这导致系统的负载和成本的增加。 解决方案:故障检测器设置有驱动连接到电池1的继电器2的励磁线圈的晶体管31,监视继电器的输出的电源监视器32和33,存储故障存在信息的EEPROM 341A,以及 微型计算机34A,当电源断开时将故障存在信息写入EEPROM,当电源接通时从EEPROM读出故障存在信息,并根据由电源检测到的电压值确定故障状况 电源监控器出现故障时。 通过最小化存储器的存储容量的增加来实现类似的功能。 版权所有(C)2004,JPO
    • 8. 发明专利
    • Contents protection method for backup memory of car controlling computer
    • 目前用于汽车控制计算机备份存储器的保护方法
    • JPS5949350A
    • 1984-03-21
    • JP15804082
    • 1982-09-13
    • Nippon Denso Co Ltd
    • FUJII YOSHIMITSU
    • G05B9/02F02D41/24F02D41/26F02D45/00F02P15/00G06F11/00G06F11/20
    • F02D41/249F02D41/266F02P15/008G06F11/00G06F11/0754
    • PURPOSE:To prevent destruction of the contents of a backup memory likely to occur when the ignition switch (IGSW) is turned on and off, by permitting entering into the backup memory after the source voltage is stabilized and by prohibiting such an entering upon awaiting completion of the command execution even in the condition that the source voltage has exceeded a certain specific value. CONSTITUTION:When the ignition switch 20 is turned on, a battery 10 is connected with a computer 30. When the source voltage VPS exceeds the reference voltage Va given by a reference voltage part 32, the comparatory sensing signal COMP as output by a comparator 33 changes from L(Low) to H(High) to inform that the reference voltage Va has been exceeded. Thus the CPU35 starts execution of the program. When the IGSW20 is turned off and the source voltare VPS becomes lower than another reference voltage Vb, the comparatory sensing signal COMP changes from H to L, and the voltage is switched from Vb into Va. Thereby the CPU 35 prohibits entering into the backup RAM upon awaiting completion of the command execution.
    • 目的:为了防止在点火开关(IGSW)打开和关闭时容易发生的备用存储器的内容的破坏,通过在源电压稳定后允许进入备用存储器,并且在等待完成时禁止这样的进入 即使在源电压超过某一特定值的情况下也是这样。 构成:当点火开关20接通时,电池10与计算机30连接。当源极电压VPS超过由参考电压部件32给出的参考电压Va时,由比较器33输出的比较感测信号COMP 从L(低)变为H(高),以通知参考电压Va已被超过。 因此CPU35开始执行程序。 当IGSW20关闭并且源电压VPS变得低于另一个参考电压Vb时,比较感测信号COMP从H变为L,并且电压从Vb切换到Va,由此CPU 35禁止进入备用RAM 等待完成命令执行。