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Patent Agency Ranking
公开(公告)号：US11268845B2
公开(公告)日：2022-03-08
申请号：US16885804
申请日：2020-05-28
Applicant: NATIONAL APPLIED RESEARCH LABORATORIES
Inventor： Chun-Ming Huang , Chen-Chia Chen , Chih-Hsing Lin , Chien-Ming Wu
IPC: G01F23/296 , G01F23/2965
Abstract: A liquid level monitoring system includes: a hardware unit with a tube to extend through a surface of a liquid; a processor unit generating control signals that respectively correspond to target frequencies; a sound generator unit generating, respectively based on the control signals, incident sound waves that transmit in the tube and that are reflected by the surface of the liquid to respectively form reflected sound waves; and a sensor unit for sensing the reflected sound waves to respectively generate feedback signals. The processor unit determines a maximum amplitude frequency based on the feedback signals, and calculates a level of the surface of the liquid based on the maximum amplitude frequency and a length of the tube.
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公开(公告)号：US09335201B2
公开(公告)日：2016-05-10
申请号：US14140284
申请日：2013-12-24
Applicant: National Applied Research Laboratories
Inventor： Chun-Ming Huang , Wei-Chang Tsai , Chen-Chia Chen
Abstract: The present invention provides a liquid level measuring device which comprises: a tube for accommodating a liquid; a floating member disposed inside the tube, the floating member rising and falling as the level of the liquid varies; at least one magnetic detecting element fastened to the floating member, the magnetic detecting element floating along with the floating member; and a plurality of magnetic sources disposed outside the tube, which are distributed separately along the changing direction of the liquid level so as to establish a specific magnetic field strength distribution, wherein the magnetic detecting element detects the magnetic field strength at the height at which the magnetic detecting element is located and outputs a measuring signal correspondingly, and the liquid level is determined according to the measuring signal. The present invention has many advantages including low cost, efficiency, and it can easily be deployed in considerable amounts.
Abstract translation: 本发明提供了一种液位测量装置，其包括：用于容纳液体的管; 设置在所述管内的浮动部件，所述浮动部件随着所述液体的高度变化而上升和下降; 固定在浮动部件上的至少一个磁检测元件，磁检测元件与浮动元件一起浮动; 以及设置在所述管外部的多个磁源，其沿着所述液面的变化方向分开分布，以便建立特定的磁场强度分布，其中所述磁检测元件检测在所述高度处的磁场强度， 磁检测元件相应地定位并输出测量信号，并且根据测量信号确定液位。 本发明具有成本低，效率高的优点，可以很容易地部署。
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公开(公告)号：US09470571B2
公开(公告)日：2016-10-18
申请号：US14519883
申请日：2014-10-21
Applicant: National Applied Research Laboratories
Inventor： Chun-Ming Huang , Gang-Neng Sung , Chen-Chia Chen , Wei-Chang Tsai
CPC classification number: G01F23/26
Abstract: A liquid level measuring device comprises an inner-tube unit having an inner tube and at least one inner-tube coil surrounding the inner tube; an outer-tube unit having a plurality of outer tubes, each outer tube having a plurality of outer-tube coils disposed thereon, the outer tubes being stacked, the inner tube being arranged inside the outer tubes and being risen and fallen as a level of a liquid in the outer tubes varies; and a control unit electrically connecting to the respective outer-tube coils, the control unit transmitting a set of position coded signals to the outer-tube coils disposed on an individual outer tube, the control unit determining the liquid level according to an induced signal generated by the inner-tube coil. Said device has many advantages including low cost and modular design, and such a device is easily to be deployed.
Abstract translation: 液位测量装置包括内管单元，其具有内管和围绕内管的至少一个内管线圈; 具有多个外管的外筒单元，每个外管具有多个设置在其上的外管线圈，所述外管层叠，所述内管布置在所述外管的内部并且上升并下降为 外管中的液体变化; 以及控制单元，电连接到各个外管线圈，所述控制单元将一组位置编码信号发送到设置在单个外管上的外管线圈，所述控制单元根据产生的感应信号来确定液位 通过内管线圈。 所述装置具有包括低成本和模块化设计在内的许多优点，并且这种装置易于部署。
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公开(公告)号：US20150054677A1
公开(公告)日：2015-02-26
申请号：US14090617
申请日：2013-11-26
Applicant: NATIONAL APPLIED RESEARCH LABORATORIES
Inventor： Chun-Ming HUANG , Chen-Chia Chen , Yung-Bin Lin , Chien-Ming Wu
IPC: G01B15/02
Abstract: A method and apparatus for sensing boundaries between materials are provided. The method for sensing boundaries between materials comprises the steps of: fixing sensing modules in place; transmitting and receiving radio frequency signals; and analyzing radio frequency signals. The method enables real-time detection of positions of the boundaries between materials and handling and monitoring of changes in the boundary positions. The apparatus for sensing boundaries between materials comprises at least two sensing modules, or a radio frequency transmitting unit and a plurality of radio frequency signals receiving unit, or a plurality of radio frequency transmitting unit and a radio frequency signals receiving unit. The radio frequency signals are transmitted, received and analyzed by the radio frequency transmitting unit and the radio frequency signals receiving unit to determine the boundary positions and changes therein.
Abstract translation: 提供了用于感测材料之间的边界的方法和装置。 用于感测材料之间的边界的方法包括以下步骤：将感测模块固定到位; 发射和接收射频信号; 并分析射频信号。 该方法能够实时检测材料之间边界的位置，并处理和监测边界位置的变化。 用于感测材料之间的边界的装置包括至少两个感测模块或射频发射单元和多个射频信号接收单元，或多个射频发射单元和射频信号接收单元。 无线电频率信号由射频发送单元和射频信号接收单元发送，接收和分析，以确定其中的边界位置和变化。
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公开(公告)号：US09464888B2
公开(公告)日：2016-10-11
申请号：US14090617
申请日：2013-11-26
Applicant: NATIONAL APPLIED RESEARCH LABORATORIES
Inventor： Chun-Ming Huang , Chen-Chia Chen , Yung-Bin Lin , Chien-Ming Wu
Abstract: A method and apparatus for sensing boundaries between materials are provided. The method for sensing boundaries between materials comprises the steps of: fixing sensing modules in place; transmitting and receiving radio frequency signals; and analyzing radio frequency signals. The method enables real-time detection of positions of the boundaries between materials and handling and monitoring of changes in the boundary positions. The apparatus for sensing boundaries between materials comprises at least two sensing modules, or a radio frequency transmitting unit and a plurality of radio frequency signals receiving unit, or a plurality of radio frequency transmitting unit and a radio frequency signals receiving unit. The radio frequency signals are transmitted, received and analyzed by the radio frequency transmitting unit and the radio frequency signals receiving unit to determine the boundary positions and changes therein.
Abstract translation: 提供了用于感测材料之间的边界的方法和装置。 用于感测材料之间的边界的方法包括以下步骤：将感测模块固定到位; 发射和接收射频信号; 并分析射频信号。 该方法能够实时检测材料之间边界的位置，并处理和监测边界位置的变化。 用于感测材料之间的边界的装置包括至少两个感测模块或射频发射单元和多个射频信号接收单元，或多个射频发射单元和射频信号接收单元。 无线电频率信号由射频发送单元和射频信号接收单元发送，接收和分析，以确定其中的边界位置和变化。
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