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    • 2. 发明授权
    • Synchronous detection circuit, sensing circuit, physical quantity measuring device, gyro sensor, and electronic apparatus
    • 同步检测电路,感测电路,物理量测量装置,陀螺仪传感器和电子设备
    • US08240204B2
    • 2012-08-14
    • US12407424
    • 2009-03-19
    • Masahiro KanaiAsami KobayashiNaoki Yoshida
    • Masahiro KanaiAsami KobayashiNaoki Yoshida
    • G01P9/00G01C19/00
    • G01C19/56G01P15/097
    • A synchronous detection circuit includes: an offset compensation circuit which generates an offset compensation voltage to compensate an offset voltage superposed on a direct current voltage signal; and a temperature compensation circuit which generates a temperature compensation voltage to compensate variation of a direct current reference voltage that depends on a temperature in a signal path of a sensing circuit. In the circuit, the synchronous detection circuit synchronously detects an alternating current signal, the offset compensation voltage and the temperature compensation voltage are respectively superposed on the alternating current signal which is input into the synchronous detection circuit, and the synchronous detection circuit synchronously detects the alternating current signal on which the offset compensation voltage and the temperature compensation voltage have been superposed.
    • 一种同步检测电路包括:偏移补偿电路,产生偏移补偿电压以补偿叠加在直流电压信号上的偏移电压; 以及温度补偿电路,其生成温度补偿电压,以补偿依赖于感测电路的信号路径中的温度的直流参考电压的变化。 在该电路中,同步检测电路同步检测交流信号,偏移补偿电压和温度补偿电压分别叠加在输入到同步检测电路的交流信号上,同步检测电路同步检测交替 偏移补偿电压和温度补偿电压叠加的电流信号。
    • 3. 发明授权
    • Angular velocity sensor correcting apparatus for deriving value for correcting output signal from angular velocity sensor, angular velocity calculating apparatus, angular velocity sensor correcting method, and angular velocity calculating method
    • 角速度传感器校正装置,用于从角速度传感器,角速度计算装置,角速度传感器校正方法和角速度计算方法得出校正输出信号的值
    • US08234091B2
    • 2012-07-31
    • US12606061
    • 2009-10-26
    • Takahiro Kondoh
    • Takahiro Kondoh
    • G01C17/38G01C19/00G01P9/00G01P15/097G01P3/00
    • G01C21/28
    • A measuring unit obtains measurement data of an object measured on the basis of a signal from a GPS satellite and angular velocity of an object output from an angular velocity sensor. An offset value computing unit estimates a running condition of the object on the basis of the measurement data and the angular velocity. The offset value computing unit sequentially derives temporary offset values while changing combination of the measurement data and the angular velocity in accordance with the estimated running condition of the object and, after that, executes statistical process on the temporary offset values, thereby deriving an offset value. An angular velocity conversion coefficient computing unit sequentially derives temporary angular velocity conversion coefficients on the basis of the measurement data and the angular velocity and, after that, executes statistical process on the temporary angular velocity conversion coefficients, thereby deriving an angular velocity conversion coefficient. An angular velocity converting unit derives final angular velocity on the basis of the angular velocity conversion coefficient, the offset value, and the angular velocity.
    • 测量单元获得基于来自GPS卫星的信号测量的物体的测量数据和从角速度传感器输出的物体的角速度。 偏移值计算单元基于测量数据和角速度估计对象的运行状况。 偏移值计算单元根据估计的对象的运行状况,在改变测量数据和角速度的组合的同时依次导出临时偏移值,然后对临时偏移值执行统计处理,从而得到偏移值 。 角速度转换系数计算单元根据测量数据和角速度依次导出临时角速度转换系数,然后对临时角速度转换系数执行统计处理,从而导出角速度转换系数。 角速度转换单元基于角速度转换系数,偏移值和角速度导出最终的角速度。
    • 5. 发明授权
    • Physical quantity sensor
    • 物理量传感器
    • US08037755B2
    • 2011-10-18
    • US12442437
    • 2007-09-21
    • Yoichi NagataTohru Yanagisawa
    • Yoichi NagataTohru Yanagisawa
    • G01P9/00
    • G01P15/097G01C19/56G01D3/021
    • A physical quantity sensor 1 comprises a driving circuit 4 that drives a sensor element based on a reference signal; the sensor element 3 that is driven by the driving circuit 4 to convert an externally applied physical quantity to an electrical signal; and an amplifier circuit 5 that amplifies an output signal of the sensor element 3. The driving circuit 4 controls a driving signal, which drives the sensor element, based on the reference signal so that the driving signal is at a fixed level, and the amplifier circuit 5 has a gain characteristic that amplifies the output signal in a direction reverse to a direction in which the reference signal varies or the driving signal of the driving circuit varies. This configuration allows the physical quantity sensor to reduce output level variations in the sensor output against signal level variations in the reference signal and to make the sensitivity constant.
    • 物理量传感器1包括基于参考信号驱动传感器元件的驱动电路4; 由驱动电路4驱动以将外部施加的物理量转换为电信号的传感器元件3; 以及放大电路5,其放大传感器元件3的输出信号。驱动电路4根据参考信号控制驱动传感器元件的驱动信号,使得驱动信号处于固定电平,放大器 电路5具有在与参考信号变化的方向相反的方向或驱动电路的驱动信号变化的方向上放大输出信号的增益特性。 该配置允许物理量传感器降低传感器输出中的输出电平变化,防止参考信号中的信号电平变化,并使灵敏度保持不变。
    • 6. 发明申请
    • INTEGRATED RESONATING GYRO ACCELEROMETER IN A SEMICONDUCTOR SUBSTRATE
    • 在半导体基板中集成的共振加速度计
    • US20110051144A1
    • 2011-03-03
    • US12330419
    • 2008-12-08
    • Ray WilfingerEric BaileyCarl Wingard
    • Ray WilfingerEric BaileyCarl Wingard
    • G01C19/64G01P9/00G01P15/12
    • G01C19/721G01C21/16G01P15/097G01P15/123G01P15/18
    • An integrated interferometric gyroscope and accelerometer device. An example device includes a cantilever beam, a package having a post connected to one end of the beam, a piezoresistor driver, a piezoresistor sensor, and a semiconductor interferometric optical gyro. The piezoresistor driver is incorporated within the beam at a first area proximate to the post. The driver electro-thermally resonates the beam. The piezoresistor sensor is incorporated within the beam at the first area. The sensor piezoresitively senses a signal that relates to an acceleration force out-of-plane of the beam. The semiconductor interferometric optical gyro is also incorporated within the beam at a second area of the beam. The gyro senses rotational motion about an axis approximately equivalent to the acceleration force out-of-plane of the beam. The gyro includes a waveguide, a laser source and a light detector. The beam is formed from a semiconductor substrate.
    • 集成干涉陀螺仪和加速度计装置。 示例性装置包括悬臂梁,具有连接到梁的一端的柱的封装,压电电阻驱动器,压电电阻传感器和半导体干涉光学陀螺仪。 压电电阻驱动器在靠近柱的第一区域内并入梁内。 驱动器电热谐振光束。 压电电阻传感器结合在第一区域的光束内。 传感器压阻地感测与束的平面外的加速力有关的信号。 半导体干涉光学陀螺仪也被结合在波束的第二区域内。 陀螺仪感测绕近似等于梁的平面外的加速力的轴的旋转运动。 陀螺仪包括波导,激光源和光检测器。 光束由半导体衬底形成。
    • 10. 发明授权
    • Rotation sensing apparatus and method for manufacturing the same
    • 旋转传感装置及其制造方法
    • US07155976B2
    • 2007-01-02
    • US11028524
    • 2005-01-05
    • Chang Kai-ChengLiang Pei-FangHsu Ming-HsiuChen Yi-RuChen Ya-Ping
    • Chang Kai-ChengLiang Pei-FangHsu Ming-HsiuChen Yi-RuChen Ya-Ping
    • G01C19/00G01P9/00
    • G01C19/5719
    • The invention provides a rotation sensing apparatus and method for manufacturing the same, in which the rotation sensing apparatus comprises at least a pair of vibration parts and a sensing electrode. The pair of vibration parts is disposed on a substrate symmetrically and each vibration part comprises an electrostatic vibrating body, a fixed support and an elastic body. The electrostatic vibrating body is away from the substrate with an appropriate distance. The fixed support connects with the electrostatic vibrating body and the substrate. The elastic body connects the fixed support with some rods thereof and connects with the electrostatic vibrating body with some other rods thereof. The sensing electrode is disposed on the substrate and under the at least pair of vibration parts. The pair of vibration parts can vibrate horizontally by electrostatic force and will sway vertically to the substrate by Coriolis force when a rotation occurs. The rotation can be measured by detecting the change of capacitance between the electrostatic vibrating body and the sensing electrode.
    • 本发明提供了一种旋转感测装置及其制造方法,其中旋转感测装置至少包括一对振动部分和感测电极。 该对振动部件对称地设置在基板上,并且每个振动部分包括静电振动体,固定支撑件和弹性体。 静电振动体距适当距离的基板。 固定支架与静电振动体和基板连接。 弹性体将固定支撑件与其一些杆连接,并与静电振动体与其它一些杆连接。 感测电极设置在基板上并且在至少一对振动部分之下。 一对振动部件可以通过静电力水平振动,并且当旋转发生时将通过科里奥利力垂直于基板摆动。 可以通过检测静电振动体和感测电极之间的电容的变化来测量旋转。