公开(公告)号：US5829303A

公开(公告)日：1998-11-03

申请号：US667281

申请日：1996-06-20

Applicant: George David Fraser

Inventor： George David Fraser

IPC: G01F23/72 ,  G01F23/74 ,  G01F23/76 ,  H01H35/18 ,  H01H36/00 ,  H01H36/02 ,  G01F23/62

CPC classification number: H01H35/18 ,  G01F23/72 ,  G01F23/74 ,  G01F23/76 ,  H01H36/006 ,  H01H36/02 ,  Y10S73/05

Abstract: A method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float. Firstly, providing an elongate float having an axial bore defining a longitudinal axis. The float has a plurality of magnets axially spaced along the longitudinal axis to form magnetic layers. Secondly, providing a tube having a first end and a second end. A plurality of magnetically activated reed switches are equally axially spaced from the first end to the second end. The tube extends through the axial bore of the float. Thirdly, determining which of the plurality of magnetically activated reed switches have been activated by the axially spaced magnetic layers of the float and interpolating float position in relation to the activated reed switches.

Abstract translation: 一种使用具有簧片开关的液位计来测量液位的方法和装置，以确定磁浮子的位置。 首先，提供具有限定纵向轴线的轴向孔的细长浮子。 浮子具有沿着纵向轴线间隔开的多个磁体以形成磁性层。 其次，提供具有第一端和第二端的管。 多个磁激活舌簧开关同样地从第一端到第二端轴向间隔开。 管延伸穿过浮子的轴向孔。 第三，确定多个磁力激励的簧片开关中的哪一个已经被浮动的轴向间隔的磁性层和相对于激活的簧片开关内插的浮动位置激活。