Compensating accelerometer with optical angle sensing
    2.
    发明公开
    Compensating accelerometer with optical angle sensing 有权
    Winkelmessung的Servo-Beschleunigungsmesser mit optischer

    公开(公告)号:EP1837662A1

    公开(公告)日:2007-09-26

    申请号:EP07250954.0

    申请日:2007-03-07

    IPC分类号: G01P15/093 G01P15/13

    CPC分类号: G01P15/093 G01P15/132

    摘要: A compensating accelerometer includes a housing, and a sensing element mounted in the housing. The sensing element includes a pendulum flexibly mounted on a base. The sensing element includes a coil mounted on a movable plate, a curtain having a slit, and a load mass affixed to the curtain. An angle sensor within the housing includes the curtain, a fork, a light source and a differential light detector. A momentum sensor within the housing includes a permanent magnet, an inner magnetic conductor, an outer magnetic conductor and the coil. The permanent magnet is magnetized in a direction of an axis of the pendulum. A stopper is used to adjust position of the fork. A spring is on opposite side of the fork, for taking up slack in the fork. A fixator has an eccentric, for adjusting a gap between the curtain and the light detector.

    摘要翻译: 补偿加速度计包括壳体和安装在壳体中的感测元件。 感测元件包括柔性地安装在基座上的摆锤。 感测元件包括安装在可移动板上的线圈,具有狭缝的帘幕和固定到帘幕上的负载物质。 壳体内的角度传感器包括窗帘,叉子,光源和差分光检测器。 壳体内的动量传感器包括永磁体,内磁导体,外磁导体和线圈。 永磁体沿摆锤的轴线方向被磁化。 使用止动器来调节叉子的位置。 一个弹簧在叉子的相对侧,用于在叉子上松动。 固定器具有偏心件,用于调节窗帘和光检测器之间的间隙。

    Magnetofluidic accelerometer
    3.
    发明公开
    Magnetofluidic accelerometer 审中-公开
    磁流体加速计

    公开(公告)号:EP1640727A1

    公开(公告)日:2006-03-29

    申请号:EP05255837.6

    申请日:2005-09-21

    摘要: A method of measuring acceleration includes suspending an inertial body using a magnetic fluid; generating a magnetic field within the magnetic fluid; modulating the magnetic field to counteract a change in position of the inertial body relative to sources of the magnetic field due to acceleration; and calculating the acceleration based on the modulation. The calculating step derives the acceleration based on an amount of current through drive coils required for the modulation. The acceleration includes linear acceleration and/or angular acceleration. The drive coils include permanent magnets, electromagnets, or a combination of a permanent magnet and an electromagnet. Sensing coils can be used for detecting the displacement of the inertial body. Each sensing coil can be positioned substantially within a corresponding drive coil. The inertial body can be non-magnetic, weakly magnetic, or have a ferromagnetic coating.

    摘要翻译: 测量加速度的方法包括使用磁性流体悬挂惯性体; 在磁性流体内产生磁场; 调制磁场以抵消惯性体相对于由于加速引起的磁场源的位置变化; 并基于该调制来计算加速度。 计算步骤基于通过调制所需的驱动线圈的电流量导出加速度。 加速度包括线性加速度和/或角加速度。 传动线圈包括永磁体,电磁体或永磁体和电磁体的组合。 感应线圈可用于检测惯性体的位移。 每个感测线圈可以基本上位于相应的驱动线圈内。 惯性体可以是非磁性的,弱磁性的或具有铁磁涂层。

    Calibration of an Accelerometer
    4.
    发明公开
    Calibration of an Accelerometer 审中-公开
    Kalibrierung eines Beschleunigungsaufnehmers

    公开(公告)号:EP1640728A1

    公开(公告)日:2006-03-29

    申请号:EP05255835.0

    申请日:2005-09-21

    摘要: A method of calibrating an acceleration sensor includes suspending an inertial body using a magnetic fluid; generating a magnetic field within the magnetic fluid; modulating the magnetic field to cause a displacement of the inertial body; measuring a response of the inertial body to the modulation; and calibrating the acceleration sensor in real time based on the measurement. Current can be driven through a plurality of magnets for generating the magnetic field so as to create the modulation. Sensing coils can be used for detecting the response of the inertial body. The modulation can be periodic, an impulse or some other aperiodic function.

    摘要翻译: 校准加速度传感器的方法包括使用磁性流体悬挂惯性体; 在磁流体内产生磁场; 调制磁场引起惯性体的位移; 测量惯性体对调制的响应; 并基于测量实时校准加速度传感器。 可以通过用于产生磁场的多个磁体驱动电流,以便产生调制。 感应线圈可用于检测惯性体的响应。 调制可以是周期性的,脉冲或其他非周期性的功能。

    Magnetofluidic accelerometer with housing
    6.
    发明公开
    Magnetofluidic accelerometer with housing 审中-公开
    Magnetofluidischer Beschleunigungsaufnehmer mitGehäuse

    公开(公告)号:EP1640725A1

    公开(公告)日:2006-03-29

    申请号:EP05255838.4

    申请日:2005-09-21

    摘要: A housing for a magnetofluidic sensor where the sensor has a plurality of drive magnet assemblies, magnetic fluid and an inertial body. The housing has a plurality of ports for securing respective drive magnet assemblies, such that a portion of each drive magnet assembly is positioned within the housing proximate the magnetic fluid. Each drive magnet assembly includes a magnetic field source for creating a magnetic field within the magnetic fluid for acting upon the inertial body. Each drive magnet assembly also includes a sensing element for sensing movement of the inertial body within the magnetic fluid.

    摘要翻译: 用于磁流体传感器的壳体,其中传感器具有多个驱动磁体组件,磁性流体和惯性体。 壳体具有用于固定相应的驱动磁体组件的多个端口,使得每个驱动磁体组件的一部分位于靠近磁性流体的壳体内。 每个驱动磁体组件包括用于在磁流体内产生用于作用在惯性体上的磁场的磁场源。 每个驱动磁体组件还包括感测元件,用于感测惯性体在磁性流体内的移动。

    Magnetofluidic accelerometer
    7.
    发明公开
    Magnetofluidic accelerometer 审中-公开
    磁流体加速计

    公开(公告)号:EP1640724A1

    公开(公告)日:2006-03-29

    申请号:EP05255836.8

    申请日:2005-09-21

    摘要: A sensor includes a housing and a magnetic fluid within the housing that incompletely fills the housing. An inertial body is in contact with the magnetic fluid. Displacement of the inertial body relative to the magnetic fluid is indicative of acceleration on the housing. The acceleration includes linear and/or angular acceleration. The inertial body can be an air bubble, or a dissimilar liquid. A plurality of magnets are mounted on the housing, wherein the magnetic fluid is positioned in droplets between the magnets and the inertial body. The magnetic fluid can be a single droplet between each magnet and the inertial body, or multiple droplets between each magnet and the inertial body. The remaining volume in the housing can be filled with a non-magnetic fluid.

    摘要翻译: 传感器包括外壳和不完全填充外壳的壳体内的磁性流体。 惯性体与磁性流体接触。 惯性体相对于磁性流体的位移表明壳体上的加速度。 加速度包括线性和/或角加速度。 惯性体可以是气泡或不同的液体。 多个磁体安装在壳体上,其中磁性流体以液滴定位在磁体和惯性体之间。 磁性流体可以是每个磁体与惯性体之间的单个液滴,或者是每个磁体与惯性体之间的多个液滴。 外壳中的剩余体积可以填充非磁性流体。

    Servo accelerometer
    8.
    发明公开
    Servo accelerometer 有权
    伺服Beschleunigungsmesser

    公开(公告)号:EP1830193A1

    公开(公告)日:2007-09-05

    申请号:EP07250845.0

    申请日:2007-02-28

    IPC分类号: G01P15/13

    CPC分类号: G01P15/132 G01P15/11

    摘要: A servo compensating accelerometer includes a top housing half and a bottom housing half rigidly connected together, and each having coaxial threaded openings. A sensing element is positioned between the top and bottom halves and affixed to the bottom half. Top and bottom magnetic systems, each of which has a magnetic conductor, a permanent magnet and a field concentrator, the magnetic systems being mounted within the respective top and bottom halves of the housing using the threaded openings. A momentum sensor includes the top and bottom magnetic systems, and also includes two movable coils mounted on a plate and positioned within the magnetic systems. A differential angle sensor includes toroidal excitation coils located on the permanent magnets, the magnetic systems and the coils of the momentum sensor. Zero bias of the accelerometer's angular displacement sensor is tuned by adjusting the position of the magnetic systems by moving them in the threaded openings. Stop screws can be used to fix position of the magnetic systems relative to the top and bottom halves of the housing. Two perpendicular mounting surfaces are located on the bottom half of the housing. An electrical circuit that includes a preamplifier, a demodulator, a correcting element, a high frequency generator, an amplifier, the excitation coils and the movable coils, which collectively form a feedback circuit, and generate an output of the accelerometer using an inductor, a resistor, a capacitor and a filter. The sensing element, in one embodiment, can be metallic.

    摘要翻译: 伺服补偿加速度计包括顶部壳体半部和刚性连接在一起的底部壳体半部,每个具有同轴螺纹开口。 感测元件位于顶部和底部两半之间并固定到下半部分。 顶部和底部磁性系统,其中每个具有磁性导体,永磁体和场集中器,所述磁性系统使用螺纹开口安装在壳体的相应顶部和底部半部内。 动量传感器包括顶部和底部磁性系统,并且还包括安装在板上并定位在磁性系统内的两个可动线圈。 差分角度传感器包括位于永磁体上的环形激励线圈,动量传感器的磁系统和线圈。 加速度计的角位移传感器的零偏置通过在螺纹开口中移动来调节磁性系统的位置来调节。 可以使用止动螺钉来固定磁体系相对于壳体的顶部和底部两半的位置。 两个垂直的安装表面位于外壳的下半部分。 一种电路,包括前置放大器,解调器,校正元件,高频发生器,放大器,激励线圈和可动线圈,它们共同形成反馈电路,并且使用电感器产生加速度计的输出, 电阻器,电容器和滤波器。 在一个实施例中,感测元件可以是金属的。