公开(公告)号：US20050247128A1

公开(公告)日：2005-11-10

申请号：US11123036

申请日：2005-05-06

申请人： Toshiaki Fukuhara ,  Kenichi Tanaka

发明人： Toshiaki Fukuhara ,  Kenichi Tanaka

IPC分类号： G01F23/32 ,  G01F23/36 ,  G01F23/38 ,  G01F25/00

CPC分类号： G01F23/38 ,  G01F25/0061

摘要： A memory which stores an output value indicating a liquid level is provided in a Hall-effect IC, and an uppermost position and a lowermost position of a float, which are set in advance, are written to the memory as an uppermost liquid level and a lowermost liquid level using a reference position writing jig.

摘要翻译： 将存储表示液位的输出值的存储器设置在霍尔效应IC中，并且预先设定的浮子的最上位置和最下位置作为最上液位写入存储器，并且 最低液位使用参考位置书写夹具。

公开(公告)号：US5600998A

公开(公告)日：1997-02-11

申请号：US386709

申请日：1995-02-10

申请人： William R. Dean, Jr.

发明人： William R. Dean, Jr.

IPC分类号： G01F23/296 ,  G01F23/30 ,  G01F23/68 ,  G01F23/76 ,  G01F23/38

CPC分类号： G01F23/30 ,  G01F23/2963 ,  G01F23/68 ,  G01F23/76

摘要： A level sensor offset mounting mechanism that mounts in the tank fill pipe of an underground fuel tank and provides an offset for the lower level sensor portion from the drop tube. The level sensor offset mounting mechanism connects to an inner wall of the tank fill pipe by a connector. A conduit extends vertically downward from the connector to a position below the top of the tank. At the lower end of the conduit, a selectively rotatable offset device provides a horizontal offset away from the drop tube. The offset device may be rotated to an insertion position, wherein no offset is provided, to facilitate insertion, or extraction, of the level sensor into the tank. Connected to the offset device at an end distal the connection to the upper portion, the lower portion of the level sensor measures the fuel and water levels within the tank. This lower portion generally includes an instrumentation housing, a lower conduit, a fuel level float, a water level float, and a magnetostrictive device for determining the positions of the floats. The level sensor offset device is designed such that electrical wiring may be passed therethrough without allowing fuel vapors to escape the tank.

摘要翻译： 一种水平传感器偏移安装机构，其安装在地下燃料箱的储罐填充管中，并为下层传感器部分提供偏移。 液位传感器偏移安装机构通过连接器连接到油箱填充管的内壁。 导管从连接器垂直向下延伸到罐顶部下方的位置。 在导管的下端，可选择地旋转的偏移装置提供远离液滴管的水平偏移。 偏移装置可以旋转到插入位置，其中没有设置偏移，以便于将液位传感器插入或抽出到罐中。 在远离与上部连接的一端连接到偏移装置，液位传感器的下部测量罐内的燃料和水位。 该下部通常包括仪器壳体，下导管，燃料液位浮子，水位浮子和用于确定浮子位置的磁致伸缩装置。 水平传感器偏移装置被设计成使得电线可以穿过其中，而不允许燃料蒸气逸出箱体。

公开(公告)号：US5552774A

公开(公告)日：1996-09-03

申请号：US258504

申请日：1994-06-10

申请人： R. F. Gridley

发明人： R. F. Gridley

IPC分类号： G01F23/38 ,  G01F23/46 ,  H01H35/18 ,  H01H36/00 ,  H01H36/02 ,  G08B21/00

CPC分类号： G01F23/38 ,  G01F23/46 ,  H01H36/02 ,  H01H35/186 ,  H01H36/0006

摘要： A magnetically activated float switch apparatus is disclosed for opening and closing an electrical circuit in response to a predetermined change in the level of a liquid. The apparatus includes a float element having an interior chamber. There is a capsule mounted within the chamber. A permanent magnet is mounted in the capsule and is slidable between first and second positions therein. A switch is mounted in the chamber adjacent to the capsule and is electrically connected to the electrical circuit. The switch is responsive to the permanent magnet in the first position for maintaining a first state and is responsive to a permanent magnet in the second position for maintaining an opposite second state. One of the states is open and the other is closed. The float element is suspended by a cable in an upright condition when the liquid is below a known level such that the magnet is in the first position and the switch is in the first state. A weight is attached to the float element for causing the float element to tip in the liquid when the liquid is at or above the known level such that the magnet shifts from the first position to the second position and the switch switches to the second state.

摘要翻译： 公开了一种用于响应于液体水平的预定变化来打开和关闭电路的磁激活浮球开关装置。 该装置包括具有内部室的浮子元件。 有一个胶囊安装在室内。 永磁体安装在胶囊中并且可在其中的第一和第二位置之间滑动。 开关安装在与胶囊相邻的腔室中，并且电连接到电路。 所述开关响应于在所述第一位置的所述永磁体用于维持第一状态，并且响应于所述第二位置中的永磁体以保持相反的第二状态。 其中一个州是开放的，另一个是封闭的。 当液体低于已知水平时，浮子元件以直立状态由电缆悬挂，使得磁体处于第一位置并且开关处于第一状态。 当液体处于或高于已知水平或高于已知水平时，重物附接到浮子元件，以使浮子元件尖端在液体中，使得磁体从第一位置移动到第二位置，并且开关切换到第二状态。

公开(公告)号：US5265032A

公开(公告)日：1993-11-23

申请号：US20262

申请日：1993-02-18

申请人： Naresh P. Patel

发明人： Naresh P. Patel

IPC分类号： F17C13/02 ,  G01F23/00 ,  G01F23/32 ,  G01F23/38

CPC分类号： G01F23/38 ,  F17C13/021 ,  G01F23/0061 ,  G01F23/32 ,  F17C2221/035 ,  F17C2223/0153 ,  F17C2223/033 ,  F17C2250/032 ,  F17C2250/034 ,  F17C2250/0413 ,  F17C2260/024

摘要： A computerized method for sensing the level of liquefied gas in a tank at a remote location and transmitting data between the location of the tank and the computer to maintain files for inventory control. A microprocessor collects electrical signals from a tank mounted transducer, which is actuated by a float gauge, and periodically sends data over telephone lines to a computer located remotely from the tank. The computer receives and processes data during time windows established for each of a group of tanks to provide current data regarding the supply of liquefied gas in the tanks.

摘要翻译： 一种用于感测位于远程位置的罐中的液化气体水平的计算机化方法，并且在罐的位置和计算机之间传输数据以维持用于库存控制的文件。 微处理器收集来自水箱安装的换能器的电信号，该传感器由浮子式计量器驱动，并且通过电话线周期性地将数据发送到远离罐的计算机。 计算机在为一组坦克中的每一个建立的时间窗口期间接收和处理数据，以提供有关液舱中液化气供应的当前数据。

公开(公告)号：US5095274A

公开(公告)日：1992-03-10

申请号：US410988

申请日：1989-09-22

申请人： A. Paul Brokaw

发明人： A. Paul Brokaw

IPC分类号： G01R19/00 ,  B60Q11/00 ,  G01F23/38 ,  G01R19/165 ,  G01R19/32 ,  G01R31/02

CPC分类号： G01R19/16571 ,  B60Q11/00 ,  G01F23/38 ,  G01R19/32

摘要： An apparatus for monitoring current through a lamp circuit that uses a series resistance shunt in the circuit with one end being connected to a current source and the second end being connected to the lamp. The circuitry includes a comparator that is connected across the shunt and has a threshold switching voltage such that a voltage across the shunt that is larger than the threshold voltage will switch the comparator on (as in the case where the lamp is not functioning) and a voltage across the shunt that is smaller than the threshold voltage (as in the case where the lamp is in the circuit and functioning) will switch the comparator off. In a preferred embodiment, the shunt is actually a portion of the printed circuit board trace. In order to compensate for changes in resistance in the shunt that occur as the temperature of the printed circuit board trace changes, temperature compensation circuitry is included to maintain the threshold switching voltage in a fixed relationship with the temperature of the shunt. The apparatus incorporates additional circuitry connected to the comparator in order to decrease the sensitivity of the comparator to changes in the circuit supply voltage. In a preferred embodiment, the circuit has a 50% sensitivity to supply voltage changes. The circuit may be manufactured in monolithic integrated circuit form in order to enhance reliability, cost, and manufacturability.

摘要翻译： 一种用于监测通过灯电路的电流的装置，其使用电路中的串联电阻分流器，其一端连接到电流源，并且第二端连接到灯。 该电路包括一个比较器，其连接在分流器两端并具有阈值切换电压，使得分流器两端的电压大于阈值电压将使比较器开启（如在灯不起作用的情况下）和 分流器两端的电压小于阈值电压（如灯在电路和功能中的情况）将关闭比较器。 在优选实施例中，分流器实际上是印刷电路板迹线的一部分。 为了补偿随着印刷电路板的温度变化而发生的分路中的电阻变化，包括温度补偿电路以使阈值切换电压与分流器的温度保持固定的关系。 该装置包括连接到比较器的附加电路，以便降低比较器对电路电源电压变化的灵敏度。 在优选实施例中，电路对电源电压变化具有50％的灵敏度。 该电路可以以单片集成电路形式制造，以便提高可靠性，成本和可制造性。

公开(公告)号：US5090212A

公开(公告)日：1992-02-25

申请号：US628219

申请日：1990-12-17

申请人： Robert L. Keltner ,  Jim B. Ferguson

发明人： Robert L. Keltner ,  Jim B. Ferguson

IPC分类号： F17C13/02 ,  F25B45/00 ,  G01F23/38 ,  G05D9/12 ,  H03K17/95

CPC分类号： G05D9/12 ,  F17C13/021 ,  F25B45/00 ,  G01F23/38 ,  H03K17/9517 ,  F17C2205/013 ,  F17C2205/0329 ,  F17C2205/0341 ,  F17C2221/038 ,  F17C2227/0135 ,  F17C2250/036 ,  F17C2250/0413 ,  F17C2250/0417 ,  F17C2250/0491 ,  F17C2250/075 ,  F17C2250/077 ,  F17C2270/0168 ,  F25B2345/006

摘要： A cutoff switch for refrigerant recovery storage container will indicate when the storage container reaches a maximum safe level. The switch will disable the compressor to prevent further recovery of refrigerant. The switch is located in a sensor housing that couples to a magnet housing. The magnet housing mounts to the upper end of the storage container and connects with the float. A magnet will move vertically in response to movement of the float. At least one Hall Effect sensor mounts in the sensor housing. The Hall Effect sensor will sense the presence of the magnet and disable the compressor accordingly.

摘要翻译： 制冷剂回收储存容器的切断开关将指示储存容器何时达到最大安全水平。 开关将禁用压缩机，以防止制冷剂进一步回收。 开关位于耦合到磁体外壳的传感器外壳中。 磁体外壳安装在储存容器的上端并与浮子连接。 磁体将响应于浮子的移动而垂直移动。 至少有一个霍尔效应传感器安装在传感器外壳中。 霍尔效应传感器将检测磁体的存在并相应地禁用压缩机。

公开(公告)号：US4986124A

公开(公告)日：1991-01-22

申请号：US207384

申请日：1988-06-15

申请人： John V. Byrne ,  Francis McMullin ,  Aengus Murray

发明人： John V. Byrne ,  Francis McMullin ,  Aengus Murray

IPC分类号： G01B7/30 ,  G01B7/00 ,  G01D5/20 ,  G01F23/00 ,  G01F23/26 ,  G01F23/36 ,  G01F23/38 ,  G01F23/62 ,  H01F5/00 ,  H01F41/04 ,  H01L27/01 ,  H05K1/16 ,  H05K3/00

CPC分类号： H01L27/01 ,  G01D5/20 ,  G01F23/36 ,  H01F41/045 ,  H05K3/0002 ,  H01F2017/0053 ,  H05K1/165 ,  H05K2203/056 ,  Y10S73/05

摘要： In a screened inductance sensor having a drive winding, a sense winding, and a conductive screen for varying the induced voltage in the sense winding by reason of the eddy currents generated in the conductive screen in the presence of the drive field, a physical barrier is interposed between the region of the sensor in the windings are located and the region in which the screen is located. These regions are fully environmentally isolated from each other by the physical barrier. The construction is especially suited to screened inductance level gauges, in particular for fuel tanks, where the conductive screen is part of a float assembly in contact with the fuel, but the electrical windings are kept dry in a separate portion of the gauge. The sensor may make use of printed circuit windings, in particular, concentric turn windings without crossovers providing a similar electrical performance to equivalent distributed turn windings having crossovers, in which the turns are progressively displaced in the direction of relative screen and sense winding displacement.

公开(公告)号：US4791311A

公开(公告)日：1988-12-13

申请号：US101720

申请日：1987-09-28

申请人： Ravi Vig

发明人： Ravi Vig

IPC分类号： G01F23/38 ,  B60R16/02 ,  B60R16/03 ,  G01D5/14 ,  G01R33/07 ,  G08C15/00 ,  H04Q9/00 ,  B60Q1/00

CPC分类号： B60R16/0315 ,  B60R2016/0322 ,  Y10T307/461

摘要： An integrated circuit field-to-electrical energy sensor is capable of being energized through two DC voltage supply terminals. Each of a plurality of such sensors, when connected in parallel so as to be energized from a single DC supply voltage source, is capable of recognizing by means of an address code comparator a unique pulse signal code superimposed on the DC supply voltage. Stimulated by that code which is unique to only that sensor, that sensor powers up the transducer, e.g. Hall element, and responds by drawing a particular current pattern from the common DC voltage source indicative of the presence (or absence) of a field, e.g. magnetic, that is ambient to that sensor. Electrically controlled energy to the transducer provided only when the unique code is present is supplied by the switchable of two regulated voltage outputs from a dual voltage regulator having a control input connected to the output of the address code comparator. The steady (unswitched) regulated output voltage supplies energy to the MOS logic including the address code comparator. The sensor quiescent current drawn from the DC voltage supply line is thereby caused to be a very low value which becomes increasingly advantageous as more and more sensors are operated in parallel on the same DC supply line.

公开(公告)号：US4589282A

公开(公告)日：1986-05-20

申请号：US642459

申请日：1984-08-20

申请人： Stefaan D. Dumery

发明人： Stefaan D. Dumery

IPC分类号： G01F23/72 ,  G01F23/38

CPC分类号： G01F23/72 ,  Y10S73/03

摘要： A large number of equally spaced Hall-sensors form a column. They are mounted in a tube with a closed bottom. Each sensor is a packaged integrated circuit with a Hall-cell connected to a Schmitt Trigger circuit. An annular float being fitted slidably about the tube carries a compound magnet that generates a pattern of regularly spaced apart magnetic field regions each having the same dimensions and each capable of switching an immediately adjacent Hall-sensor. The Hall-sensors are energized sequentially and one at one time. By counting the number of Hall-sensors scanned, from the beginning end of the column to the first Hall-sensor that is switched, a rough measure of the liquid level is obtained. The magnetic field regions are spaced apart by a distance that is not equal to the Hall-sensor spacing so that the pattern of Hall-sensor output voltages provides a unique vernier measure of the liquid level that is appropriately added to the afore-said rough measure.

摘要翻译： 大量等间隔的霍尔传感器形成一列。 它们被安装在具有封闭底部的管中。 每个传感器是一个封装的集成电路，霍尔单元连接到施密特触发电路。 围绕管可滑动地安装的环形浮子携带复合磁体，该复合磁体产生规则间隔开的磁场区域的图案，每个磁场区域具有相同的尺寸，并且每个能够切换紧邻的霍尔传感器。 霍尔传感器依次通电，一次一次。 通过计数扫描的霍尔传感器的数量，从列的开始端到切换的第一霍尔传感器，可以获得液面的粗略测量。 磁场区域间隔开不等于霍尔传感器间距的距离，使得霍尔传感器输出电压的图案提供了适当地添加到上述粗略测量值的液位的独特游标测量值 。

公开(公告)号：US3632925A

公开(公告)日：1972-01-04

申请号：US3632925D

申请日：1969-07-22

申请人： KATSUJI FUJIWARA

发明人： FUJIWARA KATSUJI

IPC分类号： F04B49/04 ,  G01F23/38 ,  H01H36/00 ,  H01H35/18

CPC分类号： H01H36/00 ,  F04B49/04 ,  G01F23/38

摘要： A new and improved float responsive switch controls the level of a liquid in a tank. The vertical motion of the float as responding to the liquid level is changed to a rotary motion through use of magnetic responses, which rotary motion in turn activates selectively a microswitch controlling the level of the liquid.

摘要翻译： 一个新的和改进的浮动响应开关控制罐中的液体的水平。 浮子响应于液位的垂直运动通过使用磁响应而变为旋转运动，旋转运动又选择性地激活控制液体液位的微动开关。