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1. 发明授权

US06536469B2 Self-centering magnet assembly for use in a linear travel measurement device 有权
公开(公告)号：US06536469B2
公开(公告)日：2003-03-25
申请号：US09761427
申请日：2001-01-16
申请人： John P. Dilger , Donald P. Pepperling , Nile K. Dielschneider , James C. Hawkins , David E. Woollums
发明人： John P. Dilger , Donald P. Pepperling , Nile K. Dielschneider , James C. Hawkins , David E. Woollums
IPC分类号： F16K3700
CPC分类号： G01F1/363 , G01F1/383 , G01F1/40 , G01F1/42 , G05D16/2053 , G05D16/2093 , Y10T137/8242
摘要： A magnet assembly is disclosed for use with a magnetic flux sensor to provide a position sensor adapted to detect a position of a moveable member. The magnet assembly comprises a magnet housing defining an inner surface. A magnet is provided that is sized for insertion into the magnet housing and adapted for movement with the moveable member, the magnet having a north pole and a south pole, wherein the magnet generates a magnetic flux. A centering ring is positioned between the magnet and the magnet housing, the centering ring including a biased wall acting to center the magnet in the magnet housing.

2. 发明授权

US06515474B1 Linearized magnetic displacement sensor 有权
标题翻译：线性磁位移传感器
公开(公告)号：US06515474B1
公开(公告)日：2003-02-04
申请号：US09454801
申请日：1999-12-03
申请人： Nile K. Dielschneider , John P. Dilger , Donald P. Pepperling
发明人： Nile K. Dielschneider , John P. Dilger , Donald P. Pepperling
IPC分类号： G01B714
CPC分类号： G01D5/145
摘要： A displacement sensor includes a magnet assembly having a housing for mounting to one of first and second relatively moveable elements. A magnet assembly is mounted to one element and defines a longitudinal space having an axis along its length. The magnet assembly includes at least one magnet having a north and a south pole that supply fringing magnetic flux in the longitudinal space and a flux-shaping pole piece on each of the north and south poles. A magnetic field sensor assembly has a housing for mounting to the other of the first and second elements for movement along an axis in the space parallel to the magnet assembly. In one embodiment, each of the flux-shaping pole pieces has a pentagon shape in a plane of primary flux pattern, forming a first face confronting the longitudinal space between the first and second magnets. In another embodiment, the magnet is a cylindrical magnet adjacent the longitudinal space, and the first face of each flux-shaping pole piece is cylindrical and coaxial with the cylindrical magnet. Preferably, the pole piece has a frusto-conical face confronting the longitudinal space adjacent the cylindrical face.
摘要翻译：位移传感器包括具有用于安装到第一和第二相对可移动元件中的一个的壳体的磁体组件。磁体组件安装在一个元件上并且限定了沿其长度具有轴的纵向空间。磁体组件包括至少一个具有北极和南极的磁体，其在纵向空间中提供边缘磁通量，并且在北极和南极中的每一个上具有磁通成形极片。磁场传感器组件具有用于安装到第一和第二元件中的另一个的壳体，用于沿平行于磁体组件的空间中的轴线移动。在一个实施例中，每个磁通成形极片在主要磁通图形的平面中具有五边形形状，形成面对第一和第二磁体之间的纵向空间的第一面。在另一个实施例中，磁体是与纵向空间相邻的圆柱形磁体，并且每个磁通形成极片的第一面是圆柱形的，与圆柱形磁体同轴。优选地，极片具有面向邻近圆柱面的纵向空间的截头圆锥形面。

3. 发明授权

US6161420A High frequency measuring circuit 失效
标题翻译：高频测量电路
公开(公告)号：US6161420A
公开(公告)日：2000-12-19
申请号：US968081
申请日：1997-11-12
申请人： John P. Dilger , Nile K. Dielschneider
发明人： John P. Dilger , Nile K. Dielschneider
IPC分类号： G01R23/10 , H03K13/14 , G01R23/02 , G01R23/14 , H03M1/10
CPC分类号： G01R23/10
摘要： An electrical circuit and method for measuring small variations in a high frequency signal is disclosed. The circuit generates a coarse measurement of the input signal frequency and a reference signal having the same frequency as the frequency represented by the coarse measurement. The circuit measures the difference in frequency between the input signal and the reference signal, and adds the coarse measurement and the difference measurement to determine the frequency of the input signal. The circuit may be used in conjunction with a piezoelectric acoustic wave device and oscillator to provide an apparatus for accurately measuring low concentrations of a gas.
摘要翻译：公开了一种用于测量高频信号中的小变化的电路和方法。该电路产生输入信号频率的粗略测量和与粗略测量表示的频率具有相同频率的参考信号。电路测量输入信号和参考信号之间的频率差，并加上粗略测量和差分测量，以确定输入信号的频率。电路可以与压电声波装置和振荡器结合使用，以提供用于精确测量气体的低浓度的装置。

4. 发明授权

US06345234B1 Fugitive emission sensing system 有权
标题翻译：逃逸排放感测系统
公开(公告)号：US06345234B1
公开(公告)日：2002-02-05
申请号：US09189671
申请日：1998-11-11
申请人： John Patrick Dilger , Ted D. Grabau , Nile K. Dielschneider , Meredith D. Miller
发明人： John Patrick Dilger , Ted D. Grabau , Nile K. Dielschneider , Meredith D. Miller
IPC分类号： G01N3100
CPC分类号： G01N1/2226 , G01N2001/2241
摘要： A system and method for collecting data relating to emissions from an emissions source is disclosed. The system comprises an accumulator adapted to receive emissions from the emissions source, a sensor in flow communication with an outlet of the accumulator for generating a signal indicative of a physical property of the emissions, and a sensor interface circuit receiving the signal and generating data relating to the emissions from the emissions source. A system and method for reducing emissions from an emissions source is also disclosed, including a microcontroller receiving data relating to the emissions from the emissions source and generating control signals for reducing the emissions.
摘要翻译：公开了一种用于收集与排放源的排放有关的数据的系统和方法。该系统包括适于接收来自排放源的排放物的累积器，与累积器的出口流动连通的传感器，用于产生指示排放物理属性的信号;以及传感器接口电路，接收信号并产生相关的数据还公开了用于减少排放源的排放的系统和方法，包括微控制器，其接收与来自排放源的排放有关的数据，并产生用于减少排放的控制信号。

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