公开(公告)号：US06222359B1

公开(公告)日：2001-04-24

申请号：US09335546

申请日：1999-06-18

申请人： John S. Duesler ,  Craig A. Jarrard ,  Robert L. Newman ,  Ronald C. Nonnenmacher ,  David S. Pfaffenberger ,  David J. Miller

发明人： John S. Duesler ,  Craig A. Jarrard ,  Robert L. Newman ,  Ronald C. Nonnenmacher ,  David S. Pfaffenberger ,  David J. Miller

IPC分类号： G01B730

CPC分类号： G01D5/145

摘要： A non-contacting position sensor having radial bipolar tapered magnets. The sensor has a semicircular first plate and a second plate. Four semicircular magnets are affixed to the first plate and second plate. Each magnet has a thick end and a thin end. Two magnets generate a linearly varying magnetic field having a first polarity, while the other two magnets generate a linearly varying magnetic field having a second polarity. An air gap is formed in the space between the four magnets. A magnetic flux sensor is positioned within the air gap. The object whose position is to be monitored is rigidly attached to the magnet assembly, causing the magnetic flux sensor to move relative to the magnets within the air gap as the component moves. A varying magnetic field is detected by the magnetic flux sensor, resulting in an electrical signal from the magnetic flux sensor that varies according to its position relative to the four magnets.

摘要翻译： 具有径向双极锥形磁体的非接触位置传感器。 传感器具有半圆形的第一板和第二板。 四个半圆形磁体固定在第一板和第二板上。 每个磁体都有一个较厚的端部和一个较薄的端部。 两个磁体产生具有第一极性的线性变化的磁场，而另外的两个磁体产生具有第二极性的线性变化的磁场。 在四个磁体之间的空间中形成气隙。 磁通量传感器位于气隙内。 要监测其位置的物体刚性地附接到磁体组件，使得磁通量传感器在部件移动时相对于气隙内的磁体移动。 由磁通量传感器检测到变化的磁场，导致来自磁通量传感器的电信号根据其相对于四个磁体的位置而变化。

公开(公告)号：US06211668B1

公开(公告)日：2001-04-03

申请号：US09208296

申请日：1998-12-09

申请人： John S. Duesler ,  Craig A. Jarrard ,  Robert L. Newman ,  Ronald C. Nonnenmacher ,  David S. Pfaffenberger ,  David J. Miller

发明人： John S. Duesler ,  Craig A. Jarrard ,  Robert L. Newman ,  Ronald C. Nonnenmacher ,  David S. Pfaffenberger ,  David J. Miller

IPC分类号： G01B714

CPC分类号： G01D5/145 ,  G01B7/003 ,  G01B7/30

摘要： In accordance with the present invention, a non-contacting position sensor using bipolar tapered magnets is provided. A non-contacting position sensor in accordance with the preferred embodiment uses a pole piece having a first plate and a second plate. Four magnets are affixed to the first plate and second plate. Each magnet has a thick end and a thin end. Two magnets generate a linearly varying magnetic field having a first polarity, while the other two magnets generate a linearly varying magnetic filed having a second polarity. An air gap is formed in the space between the four magnets. A magnetic flux sensor is positioned within the air gap. The component whose position is to be monitored is rigidly attached to either the pole piece or the magnetic flux sensor, causing the magnetic flux sensor to move relative to the magnets within the air gap as the component moves. A varying magnetic field is detected by the magnetic flux sensor, resulting in a signal from the magnetic flux sensor that varies according to its position relative to the four magnets. The signal from the magnetic flux sensor is used to provide an indication of the position of the component to be monitored.

摘要翻译： 根据本发明，提供了使用双极锥形磁体的非接触位置传感器。 根据优选实施例的非接触位置传感器使用具有第一板和第二板的极片。 四个磁体固定在第一板和第二板上。 每个磁体都有一个较厚的端部和一个较薄的端部。 两个磁体产生具有第一极性的线性变化的磁场，而另外两个磁体产生具有第二极性的线性变化的磁场。 在四个磁体之间的空间中形成气隙。 磁通量传感器位于气隙内。 要监视其位置的部件刚性地附接到极靴或磁通量传感器，使得磁通量传感器随着部件移动而相对于气隙内的磁体移动。 由磁通量传感器检测到变化的磁场，导致来自磁通量传感器的信号根据其相对于四个磁体的位置而变化。 来自磁通量传感器的信号用于提供待监测部件的位置的指示。

公开(公告)号：US5918260A

公开(公告)日：1999-06-29

申请号：US872987

申请日：1997-06-11

申请人： Robert L. Newman ,  John S. Duesler

发明人： Robert L. Newman ,  John S. Duesler

IPC分类号： G01N27/16 ,  G01N33/00 ,  G01N25/36 ,  G01N27/04 ,  G08B17/10

CPC分类号： G01N33/0031

摘要： A combustible gas detector or sensors having a multi-level sensitivity circuitry. The gas detector has a bridge circuit for outputing voltages indicative of gas concentrations contacting the bridge circuit. There is a power supply node electrically coupled to one end of the bridge circuit. There is also a voltage control circuit, coupled between the bridge circuit and the power supply node, for controlling when at least a low and high input voltage level is supplied to the bridge circuit so that the bridge circuit has at least two levels of gas concentration discernability. The bridge circuit outputs distinguishable voltage levels for high gas concentrations in response to receiving the low voltage level. Additionally, the bridge circuit outputs distinguishable voltage levels for low gas concentrations in response to receiving the high voltage level.

摘要翻译： 具有多级灵敏度电路的可燃气体探测器或传感器。 气体检测器具有用于输出表示与桥接电路接触的气体浓度的电压的桥接电路。 电源节点电连接到桥接电路的一端。 还有一个耦合在桥接电路和电源节点之间的电压控制电路，用于当至少将低和高的输入电压电平提供给桥接电路时进行控制，使得桥接电路具有至少两个气体浓度水平 可辨别性 桥接电路响应于接收到低电压电平而输出用于高气体浓度的可区分的电压电平。 此外，桥接电路响应于接收到高电压电平而输出用于低气体浓度的可区分的电压电平。

公开(公告)号：US06304078B1

公开(公告)日：2001-10-16

申请号：US09657498

申请日：2000-09-08

申请人： Craig A. Jarrard ,  John S. Duesler

发明人： Craig A. Jarrard ,  John S. Duesler

IPC分类号： G01B714

CPC分类号： G01B7/30 ,  G01B7/003 ,  G01D5/145

摘要： A non-contacting linear position sensor having bipolar tapered magnets. A pair of magnets are positioned adjacent each other and attached to a movable object. Each magnet has a central portion that is thinner than both ends of the magnets. A pair of pole pieces has ends that are arranged spaced apart in parallel relationship about the central portion. The other ends of the pole pieces are located spaced apart with a magnetic flux sensor located between. The magnetic flux sensor senses a variable magnetic field representative of the position of the attached movable object as the magnets move. The magnets have opposite polarities on either sides of the central portion.

摘要翻译： 具有双极锥形磁体的非接触线性位置传感器。 一对磁体彼此相邻地定位并附接到可移动物体。 每个磁体具有比磁体两端更薄的中心部分。 一对极片具有围绕中心部分以平行关系排列的端部。 极片的另一端与位于其间的磁通量传感器间隔开。 当磁体移动时，磁通传感器感测代表所连接的可移动物体的位置的可变磁场。 磁体在中心部分的两侧具有相反的极性。