公开(公告)号：US20050189938A1

公开(公告)日：2005-09-01

申请号：US10971569

申请日：2004-10-22

Applicant: William Schley ,  Eric Chapman ,  Dan Nguyen ,  Lawrence Flesch ,  Sandra Harper ,  Curtis Stevens

Inventor： William Schley ,  Eric Chapman ,  Dan Nguyen ,  Lawrence Flesch ,  Sandra Harper ,  Curtis Stevens

IPC: G01B7/14 ,  G01D5/252

CPC classification number: G01D5/145 ,  G01D5/252

Abstract: Disclosed is a system and method for measuring the position of at least one field producing element (e.g., a magnet) without a direct electrical or physical connection between the field producing element and the sensor(s). In one embodiment, the output from an array of sensors (e.g., Hall Effect sensors) is curve fit using an algorithm having a characteristic bell curve (e.g., curve fit tracking algorithm, center of gravity algorithm, etc.) to determine at least one of an absolute or relative position associated with the field producing element and/or a property associated with the field producing element (e.g., magnetic flux). Another embodiment is directed to detecting errors in one or more of the sensors and excluding the output of the faulty sensors in determining the position associated with the field producing element.

Abstract translation: 公开了一种用于在场产生元件和传感器之间没有直接电或物理连接的情况下测量至少一个场产生元件（例如，磁体）的位置的系统和方法。 在一个实施例中，来自传感器阵列（例如，霍尔效应传感器）的输出使用具有特征钟形曲线（例如曲线拟合跟踪算法，重心算法等）的算法进行曲线拟合，以确定至少一个 与场产生元件相关联的绝对或相对位置和/或与场产生元件相关联的属性（例如，磁通量）。 另一个实施例旨在检测一个或多个传感器中的错误，并且在确定与场产生元件相关联的位置时排除故障传感器的输出。