公开(公告)号：US07466146B2

公开(公告)日：2008-12-16

申请号：US11373071

申请日：2006-03-10

申请人： Bradley Clayton Stewart ,  Sergio Garcia de Alba Garcin ,  Rogelio Reyna Garcia ,  Gabriel Sanchez Barba ,  David L. Wilson

发明人： Bradley Clayton Stewart ,  Sergio Garcia de Alba Garcin ,  Rogelio Reyna Garcia ,  Gabriel Sanchez Barba ,  David L. Wilson

IPC分类号： G01R27/26 ,  G01R29/12 ,  F25D21/02 ,  G08B19/02 ,  G08B21/00

CPC分类号： G01N27/22

摘要： An electric field sensor may be used to detect accumulation of frozen material. In one embodiment, an e-field system includes a first electrode, a second electrode located at a distance from the first electrode, the second electrode forming a capacitive element with the first electrode, wherein a gap is present between the first and second electrodes, and an electric field sensor having an electrode terminal coupled to the first electrode and providing an electric field output value representative of an amount of frozen material located in the gap between the first and second electrodes. The system may also include a first insulator adjacent the first electrode and outside the gap, and a conductive layer adjacent the first insulator, where the first insulator is between the first electrode and the conductive layer, and where a shield output of the electric field sensor is coupled to the conductive layer.

摘要翻译： 可以使用电场传感器来检测冷冻材料的积聚。 在一个实施例中，电场系统包括第一电极，位于距离第一电极一定距离的第二电极，第二电极与第一电极形成电容元件，其中在第一和第二电极之间存在间隙， 以及电场传感器，其具有耦合到所述第一电极的电极端子，并且提供表示位于所述第一和第二电极之间的间隙中的冷冻材料的量的电场输出值。 该系统还可以包括邻近第一电极并在间隙外部的第一绝缘体和邻近第一绝缘体的导电层，其中第一绝缘体位于第一电极和导电层之间，并且其中电场传感器的屏蔽输出 耦合到导电层。