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    • 4. 发明授权
    • Techniques for determining orientation of a three-axis accelerometer
    • 确定三轴加速度计方位的技术
    • US07970573B2
    • 2011-06-28
    • US12341055
    • 2008-12-22
    • Rahul ShahJunaith Ahemed ShahabdeenLama NachmanJonathan Huang
    • Rahul ShahJunaith Ahemed ShahabdeenLama NachmanJonathan Huang
    • G01P15/00G06F19/00
    • A61B5/1123A61B5/112A61B2562/0219
    • A method, apparatus, and article containing computer instructions are described. Embodiments may use accelerometer data regarding forward motion by a wearer of a three-axis on-body accelerometer. Embodiments may further measure an acceleration due to gravity on each axis x, y, z of the accelerometer and use the direction of gravity to associate or align the x axis of the accelerometer with gravity. Embodiments may then use the acceleration not due to gravity to identify the forward motion and associate or align the forward direction with the y axis. The remaining direction may be identified as the sideways direction, which may be associated or aligned with the z axis. Additional activities may then be performed using the now-known orientation of the accelerometer. Other embodiments are described and claimed.
    • 描述包含计算机指令的方法,装置和物品。 实施例可以使用关于三轴本体加速度计的佩戴者的向前运动的加速度计数据。 实施例可以进一步测量由于加速度计的每个轴线x,y,z上的重力引起的加速度,并且使用重力方向将加速度计的x轴与重力相关联或对齐。 然后,实施例可以使用不由于重力引起的加速度来识别向前的运动,并将前进方向与y轴相关联或对齐。 剩余方向可以被识别为可以与z轴相关联或对准的侧向方向。 然后可以使用加速度计的现在已知的取向来执行附加的活动。 描述和要求保护其他实施例。
    • 9. 发明申请
    • TECHNIQUES FOR DETERMINING ORIENTATION OF A THREE-AXIS ACCELEROMETER
    • 用于确定三轴加速度计方位的技术
    • US20100161271A1
    • 2010-06-24
    • US12341055
    • 2008-12-22
    • Rahul ShahJunaith Ahemed ShahabdeenLama NachmanJonathan Huang
    • Rahul ShahJunaith Ahemed ShahabdeenLama NachmanJonathan Huang
    • G01P15/00
    • A61B5/1123A61B5/112A61B2562/0219
    • A method, apparatus, and article containing computer instructions are described. Embodiments may use accelerometer data regarding forward motion by a wearer of a three-axis on-body accelerometer. Embodiments may further measure an acceleration due to gravity on each axis x, y, z of the accelerometer and use the direction of gravity to associate or align the x axis of the accelerometer with gravity. Embodiments may then use the acceleration not due to gravity to identify the forward motion and associate or align the forward direction with the y axis. The remaining direction may be identified as the sideways direction, which may be associated or aligned with the z axis. Additional activities may then be performed using the now-known orientation of the accelerometer. Other embodiments are described and claimed.
    • 描述包含计算机指令的方法,装置和物品。 实施例可以使用关于三轴本体加速度计的佩戴者的向前运动的加速度计数据。 实施例可以进一步测量由于加速度计的每个轴线x,y,z上的重力引起的加速度,并且使用重力方向将加速度计的x轴与重力相关联或对齐。 然后,实施例可以使用不由于重力引起的加速度来识别向前的运动,并将前进方向与y轴相关联或对齐。 剩余方向可以被识别为可以与z轴相关联或对准的侧向方向。 然后可以使用加速度计的现在已知的取向来执行附加的活动。 描述和要求保护其他实施例。
    • 10. 发明授权
    • Apparatus and method for classification of physical orientation
    • 物理方向分类的装置和方法
    • US07684954B2
    • 2010-03-23
    • US12006192
    • 2007-12-31
    • Junaith Ahemed ShahabdeenAnita Gajjala
    • Junaith Ahemed ShahabdeenAnita Gajjala
    • G01P15/00
    • G01C21/16A61B5/1126A61B5/7264A61B5/7267A61B2562/0219G01C9/00
    • A state classifier uses learning obtained from a plurality of training algorithms each adapted to differentiate between states of physical orientation of an object in response to input data from an tri-axial accelerometer. At least two of the training algorithms are trained using data from an accelerometer mounted at a non-ideal angle. The classifier is trained to distinguish between the desired states from data collected from an tri-axial accelerometer device mounted at a plurality of respective angles with respect to a optimal axis on the object, wherein the angles are in the range of −180 degrees to +180 degrees. The classifier may include a plurality of classifiers and a decision fusion module used to combine the decisions from the respective classifiers to ascertain a state.
    • 状态分类器使用从多个训练算法获得的学习,每个训练算法适于根据来自三轴加速度计的输入数据来区分物体的物理取向状态。 使用来自以非理想角度安装的加速度计的数据训练至少两个训练算法。 对分类器进行训练,以将所希望的状态与从相对于物体上的最佳轴安装的三轴加速度计装置收集的数据进行区分,其中角度在-180度至+ 180度。 分类器可以包括多个分类器和用于组合来自相应分类器的确定以确定状态的决策融合模块。