公开(公告)号：US20140012531A1

公开(公告)日：2014-01-09

申请号：US13936117

申请日：2013-07-05

Applicant: MCube, Inc.

Inventor： Sanjay BHANDARI ,  Joe KELLY

IPC: G01P21/00

CPC classification number: G01P21/00 ,  G01C25/005

Abstract: A hand-held processor system for processing data from an integrated MEMS (Micro-Electro-Mechanical-Systems) device disposed within a hand-held computer system and methods therefor. The Single Point Offset Correction (SPOC) process computes offset values to calibrate MEMS sensors using a single set of data measurements at an orientation without dynamic perturbation, and without requiring advance knowledge of orientation of the device. Arbitrary output biases, which are known to be dominant on a single axis, can be corrected to ensure consistent performance. The SPOC process provides a simple method to effectively calibrate a MEMS sensor without requiring extensive system resources. This process can be enhanced by additional estimations of sensor offsets using the set of data measurements or by use of rule-based empirical gain factors.

Abstract translation: 一种用于处理设置在手持计算机系统内的集成MEMS（微机电系统）装置的数据的手持处理器系统及其方法。 单点偏移校正（SPOC）过程计算偏移值，以在没有动态扰动的方向上使用单个数据测量集来校准MEMS传感器，并且不需要事先了解设备的取向。 已知在单个轴上占优势的任意输出偏差可以被校正，以确保一致的性能。 SPOC过程提供了一种简单的方法来有效地校准MEMS传感器，而不需要大量的系统资源。 可以通过使用该组数据测量或通过使用基于规则的经验增益因子的传感器偏移的附加估计来增强该过程。

公开(公告)号：US20130186171A1

公开(公告)日：2013-07-25

申请号：US13745723

申请日：2013-01-18

Applicant: mCube Inc.

Inventor： RAYMOND MERRILL, JR. ,  Anthony Flannery ,  Shingo Yoneoka

IPC: G01P15/125 ,  G01P21/00 ,  G01P15/08

CPC classification number: G01P15/125 ,  G01P15/08 ,  G01P15/0802 ,  G01P21/00 ,  G01P2015/0831

Abstract: A method for providing acceleration data with reduced substrate-displacement bias includes receiving in an accelerometer an external acceleration, determining the acceleration data with reduced substrate displacement bias in a compensation portion in response to a first and a second displacement indicators from a MEMS transducer, and, in response to substrate compensation factors from a MEMS compensation portion, outputting the acceleration data with reduced substrate displacement bias, wherein the first displacement indicator and the second displacement indicator are determined by the MEMS transducer relative to a substrate in response to the external acceleration and to a substrate displacement, and wherein the substrate compensation factors are determined by the MEMS compensation portion relative to the substrate in response to the substrate displacement.

Abstract translation: 用于提供具有减小的衬底位移偏置的加速度数据的方法包括在加速度计中接收外部加速度，响应于来自MEMS换能器的第一和第二位移指示器，在补偿部分中减小衬底位移偏置来确定加速度数据，以及 响应于来自MEMS补偿部分的衬底补偿因子，以减小的衬底位移偏压输出加速度数据，其中第一位移指示器和第二位移指示器响应于外部加速度由MEMS换能器相对于衬底确定，并且 到衬底位移，并且其中衬底补偿因子响应于衬底位移由MEMS补偿部分相对于衬底确定。