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    • 3. 发明授权
    • Inertial force sensor and zero point correction method used therein
    • 惯性力传感器和零点校正方法
    • US08939007B2
    • 2015-01-27
    • US14006084
    • 2012-04-26
    • Takeshi UemuraIsao Hattori
    • Takeshi UemuraIsao Hattori
    • G01P21/00G01L25/00G01C19/5614G01C19/5776
    • G01L25/00G01C19/5614G01C19/5776
    • A detecting unit outputs an object signal corresponding to an inertial force. A corrected signal is generated by correcting the object signal. A first environment value is obtained at a first time point. A second environment value is obtained at a second time point after the first time point. An environment difference value which is a difference between the first and second environment values is calculated. An environment change detection signal is output when an absolute value of the environment difference value is larger than a predetermined determination threshold. A first averaged signal is output by averaging a corrected signal in a predetermined period continuing to the first time point. A second averaging signal is output by averaging the corrected signal in a predetermined period continuing to the second time point. An offset difference value which is a difference between the first and second averaged signals is calculated. The offset difference value is stored when the environment change detection signal is output. The corrected signal is generated by adding the stored offset difference value to the object signal. This method can easily reduce the output offset even if an environment, such as an ambient temperature, abruptly changes.
    • 检测单元输出对应于惯性力的物体信号。 通过校正对象信号来生成校正信号。 在第一时间点获得第一环境值。 在第一时间点之后的第二时间点获得第二环境值。 计算作为第一和第二环境值之间的差的环境差值。 当环境差值的绝对值大于预定的确定阈值时,输出环境变化检测信号。 第一平均信号通过在连续到第一时间点的预定周期内对校正信号进行平均来输出。 第二平均信号通过在连续到第二时间点的预定周期内对校正信号进行平均来输出。 计算作为第一和第二平均信号之间的差的偏移差值。 当输出环境变化检测信号时,存储偏移差值。 通过将存储的偏移差值加到对象信号来产生校正信号。 即使环境(如环境温度)突然改变,该方法也可以轻松减少输出偏移。
    • 4. 发明申请
    • SENSOR APPARATUS
    • 传感器装置
    • US20100194401A1
    • 2010-08-05
    • US12693757
    • 2010-01-26
    • Takeshi Uemura
    • Takeshi Uemura
    • G01R31/02
    • G01D5/24461G01D18/00
    • A sensor apparatus of the present invention includes a first output terminal for outputting a sense signal, and a failure diagnosis circuit for determining whether a failure diagnosis object section is normal or abnormal, to output a failure detection signal from a second output terminal in the case of determining abnormality. The time required for an output concerning the failure detection signal from the failure diagnosis object section to reach the second output terminal is shorter than the time required for an output concerning the sense signal from the failure diagnosis object section to reach the first output terminal, thus leading to improvement in reliability under abnormal condition.
    • 本发明的传感器装置包括用于输出感测信号的第一输出端子和用于确定故障诊断对象部分是正常还是异常的故障诊断电路,以在第二输出端子输出故障检测信号 确定异常。 从故障诊断对象部分到达第二输出端子的关于故障检测信号的输出所需的时间比从故障诊断对象部分到达第一输出端的关于感测信号的输出所需的时间短,因此 导致异常情况下的可靠性提高。
    • 6. 发明授权
    • Angular velocity sensor and automobile using the same
    • 角速度传感器和汽车使用相同
    • US07347093B2
    • 2008-03-25
    • US10541320
    • 2005-02-03
    • Keisuke KurodaTakeshi Uemura
    • Keisuke KurodaTakeshi Uemura
    • G01P19/56
    • G01C19/5776G01C19/5614
    • The invention provides an angular velocity sensor which is provided with a smoothing circuit having a large smoothing time constant so that it can be reduced in size and integrated into an IC. Smoothing circuit (9) is provided with first switch (11), first capacitor (12), second switch (13), second capacitor (17) and control signal feeding module (15). Control signal feeding module (15) feeds first switch (11) and second switch (13) with a signal for controlling ON/OFF. According to this configuration, an equivalently large smoothing time constant can be set by reducing the frequency of the switching control signal of control signal feeding module (15), even if the capacities of first capacitor (12) and second capacitor (17) are small. Especially in case the capacitors are integrated into an IC, their area of occupation can be reduced to reduce the size of the angular velocity sensor and integrate the same into the IC.
    • 本发明提供了一种角速度传感器,其具有平滑电路,该平滑电路具有大的平滑时间常数,使得其可以减小尺寸并集成到IC中。 平滑电路(9)设置有第一开关(11),第一电容器(12),第二开关(13),第二电容器(17)和控制信号馈送模块(15)。 控制信号馈送模块(15)用第一开关(11)和第二开关(13)馈送用于控制ON / OFF的信号。 根据该结构,即使第一电容器(12)和第二电容器(17)的容量小,也可以通过降低控制信号供给模块(15)的开关控制信号的频率来设定等效的大的平滑时间常数 。 特别是在电容器集成到IC中的情况下,可以减小其占用面积,以减小角速度传感器的尺寸并将其集成到IC中。
    • 7. 发明申请
    • Angular velocity sensor and automobile using the same
    • 角速度传感器和汽车使用相同
    • US20060277996A1
    • 2006-12-14
    • US10541320
    • 2005-02-03
    • Keisuke KurodaTakeshi Uemura
    • Keisuke KurodaTakeshi Uemura
    • G01P9/04G01P1/04
    • G01C19/5776G01C19/5614
    • The invention provides an angular velocity sensor which is provided with a smoothing circuit having a large smoothing time constant so that it can be reduced in size and integrated into an IC. Smoothing circuit (9) is provided with first switch (11), first capacitor (12), second switch (13), second capacitor (17) and control signal feeding means (15). Control signal feeding means (15) feeds first switch (11) and second switch (13) with a signal for controlling ON/OFF. According to this configuration, an equivalently large smoothing time constant can be set by reducing the frequency of the switching control signal of control signal feeding means (15), even if the capacities of first capacitor (12) and second capacitor (17) are small. Especially in case the capacitors are integrated into an IC, their area of occupation can be reduced to reduce the size of the angular velocity sensor and integrate the same into the IC.
    • 本发明提供了一种角速度传感器,其具有平滑电路,该平滑电路具有大的平滑时间常数,使得其可以减小尺寸并集成到IC中。 平滑电路(9)设置有第一开关(11),第一电容器(12),第二开关(13),第二电容器(17)和控制信号馈送装置(15)。 控制信号馈送装置(15)向第一开关(11)和第二开关(13)馈送用于控制ON / OFF的信号。 根据该结构,即使第一电容器(12)和第二电容器(17)的容量小,也可以通过降低控制信号馈送装置(15)的开关控制信号的频率来设定等效的大的平滑时间常数 。 特别是在电容器集成到IC中的情况下,可以减小其占用面积,以减小角速度传感器的尺寸并将其集成到IC中。
    • 10. 发明授权
    • Angle speed sensor
    • 角速度传感器
    • US06412347B1
    • 2002-07-02
    • US09554522
    • 2000-09-05
    • Keisuke KurodaTakeshi UemuraToshihiko IchinoseMasahiro Saito
    • Keisuke KurodaTakeshi UemuraToshihiko IchinoseMasahiro Saito
    • G01P904
    • G01C19/5607
    • An angular rate sensor driving circuit shortens a start-up time without increasing a maximum level of amplification factor of a variable gain amplifier beyond a predetermined degree An output signal of a first amplifier is input to a positive input terminal of a third amplifier, a first resistor is inserted between a negative input terminal of the third amplifier and an output terminal of the third amplifier, a voltage having a potential in the vicinity of ½ of a power supply voltage is impressed on the negative input terminal of the third amplifier through a capacitor, a second resistor and a switch are connected in series between the output terminal of the third amplifier and an input terminal of a second amplifier, and the switch is activated by an output of a level judgement circuit.
    • 角速率传感器驱动电路缩短启动时间,而不增加超过预定程度的可变增益放大器的放大系数的最大电平。第一放大器的输出信号被输入到第三放大器的正输入端,第一放大器 电阻器插入在第三放大器的负输入端子和第三放大器的输出端子之间,通过电容器将具有电源电压的1/2的电位的电压施加到第三放大器的负输入端子 第二电阻器和开关串联连接在第三放大器的输出端和第二放大器的输入端之间,开关由电平判断电路的输出激活。