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    • 6. 发明申请
    • Angular velocity sensor
    • 角速度传感器
    • US20070180909A1
    • 2007-08-09
    • US11655576
    • 2007-01-19
    • Takeshi UchiyamaMitsuo YaritaAkira Egawa
    • Takeshi UchiyamaMitsuo YaritaAkira Egawa
    • G01P9/04G01P1/04
    • G01P15/125G01C19/56G01P15/18G01P2015/0842
    • An angular velocity sensor amplifies a plurality of detection signals using one amplifying circuit and properly separates these detection signals after amplification. The angular velocity sensor detects displacements of a mass in the respective axial directions using an x-axis detection circuit, a y-axis detection circuit and a z-axis detection circuit respectively. A carrier wave which has a phase thereof shifted from a phase of a carrier wave of the z-axis detection circuit by 90° is applied to the x-axis detection circuit and the y-axis detection circuit, wherein the application of the carrier wave to the x-axis detection circuit and the y-axis detection circuit is performed by switching based on a clock signals. Outputs of the respective axis detection circuits are collectively inputted to a current/voltage conversion circuit. An output signal of the current/voltage conversion circuit is inputted to three synchronous detection circuits, and an x-axis detection signal component, a y-axis detection signal component and a z-axis detection signal component are separated in the respective synchronous detection circuits. In the synchronous detection circuits, by applying phase division processing to the combined signal, the z-axis detection signal component is separated from cross axis detection signal components and, further, by applying time division processing to the signal components based on switching timing of the carrier wave, the x-axis detection signal component and the y-axis detection signal component are separated from each other.
    • 角速度传感器使用一个放大电路放大多个检测信号,并在放大后适当地分离这些检测信号。 角速度传感器分别使用x轴检测电路,y轴检测电路和z轴检测电路来检测各轴向的质量位移。 将具有从z轴检测电路的载波相位偏移90°的相位的载波施加到x轴检测电路和y轴检测电路,其中载波的应用 并且通过基于时钟信号的切换来执行y轴检测电路。 各轴检测电路的输出被共同地输入到电流/电压转换电路。 电流/电压转换电路的输出信号被输入到三个同步检测电路,并且在各个同步检测电路中分离x轴检测信号分量,y轴检测信号分量和z轴检测信号分量 。 在同步检测电路中,通过对组合信号进行相位分割处理,将z轴检测信号分量与交叉轴检测信号分量分离,并且通过对基于信号分量的切换定时对信号分量进行时分处理 载波,x轴检测信号分量和y轴检测信号分量彼此分离。
    • 10. 发明授权
    • Dynamic amount sensor
    • 动态量传感器
    • US07886597B2
    • 2011-02-15
    • US11703017
    • 2007-02-06
    • Takeshi UchiyamaMitsuo YaritaAkira Egawa
    • Takeshi UchiyamaMitsuo YaritaAkira Egawa
    • G01P9/04G01P15/125
    • G01P15/18G01C19/56G01P1/023G01P15/125G01P2015/0842
    • A dynamic amount sensor has a detecting circuit that detects a change in an electrostatic capacitance of each of electrostatic capacitance elements comprised of a movable electrode and a fixed electrode. A switching circuit switches the detecting circuit to first and second connecting states that detect changes in the electrostatic capacitance of the electrostatic capacitance elements in accordance with a change in an attitude of the movable electrode in corresponding first and second detecting axes directions. In the first and second connecting states, the detecting circuit includes circuits formed by connecting the electrostatic capacitance elements in series which change electrostatic capacitances symmetrically along with inclination of the movable electrode in the corresponding first and second detecting axes directions. A carrier wave applying circuit applies carrier waves whose phases are inverted from each other by 180° to the electrostatic capacitance elements which are connected in series in the first and second connecting states of the detecting circuit.
    • 动态量传感器具有检测电路,其检测由可动电极和固定电极构成的每个静电电容元件的静电电容的变化。 切换电路将检测电路切换到根据在相应的第一和第二检测轴方向上的可动电极的姿态的变化来检测静电电容元件的静电电容的变化的第一和第二连接状态。 在第一和第二连接状态下,检测电路包括通过串联连接静电电容元件而形成的电路,该静电电容元件随着可移动电极在相应的第一和第二检测轴方向上的倾斜度对称地改变静电电容。 载波施加电路将相位相互反转180°的载波与在检测电路的第一和第二连接状态下串联连接的静电电容元件。