公开(公告)号：US07411401B1

公开(公告)日：2008-08-12

申请号：US11514980

申请日：2006-09-05

申请人： David M. Hull ,  Mark R. Probst

发明人： David M. Hull ,  Mark R. Probst

IPC分类号： G01R29/08 ,  G01R31/02

CPC分类号： G01R29/12 ,  F42B15/08 ,  F42C11/008 ,  F42C13/003

摘要： Systems and methods for reducing electrostatic platform noise in electric-field sensors due to various self-charging and discharging processes are provided. A representative method includes: identifying avoidance regions of an electrostatically-floating sensor platform that have a propensity for self-induced charging and discharging; locating a first electrode and a second electrode on the electrostatically-floating sensor platform, wherein the first electrode and the second electrode are positioned and dimensioned to receive substantially equal amounts of distributed charge via self-charging; and obtaining a differential signal from these two electrodes that is proportional to an external ambient E-field of interest, while at the same time nulling out the common-mode signal that results from sensor platform self-charging and/or discharging.

摘要翻译： 提供了由于各种自充电和放电过程而减少电场传感器中的静电平台噪声的系统和方法。 一种代表性的方法包括：识别具有自感充放电倾向的静电浮动传感器平台的回避区域; 将第一电极和第二电极定位在静电浮动传感器平台上，其中第一电极和第二电极的位置和尺寸被设计成通过自充电接收基本相等数量的分布电荷; 并从这两个电极获得与外界环境电场成正比的差分信号，同时使由传感器平台自充电和/或放电所产生的共模信号变空。