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11. 发明授权

US06227046B1 System for measuring capacitance 失效
标题翻译：电容测量系统
公开(公告)号：US06227046B1
公开(公告)日：2001-05-08
申请号：US09162483
申请日：1998-09-21
申请人： Randal S. McNichol
发明人： Randal S. McNichol
IPC分类号： G01F2326
CPC分类号： G01F23/266
摘要： A system for detecting the level of a liquid in a tank wherein a capacitor positioned in the tank has spaced plates which are positioned such that the dielectric between the plates will be either air or the liquid, depending on the depth of the liquid in the tank. An oscillator supplies a sine wave current to the capacitor and a coaxial cable connects the capacitor to a measuring circuit outside the tank. If the cable is very long or the capacitance to be measured is low, the capacitance inherent in the coaxial cable will prevent an accurate reading. To avoid this problem, an inductor is connected across the cable to form with the capacitance of the cable a parallel resonant circuit. The impedance of the parallel resonant circuit is infinite, so that attenuation of the measurement signal by the stray cable capacitance is avoided.
摘要翻译：一种用于检测罐中液体水平的系统，其中位于罐中的电容器具有间隔开的板，其间定位成使得板之间的电介质将是空气或液体，这取决于罐中液体的深度。振荡器向电容器提供正弦波电流，并且同轴电缆将电容器连接到罐外的测量电路。如果电缆很长或要测量的电容低，则同轴电缆固有的电容将阻止读取。为了避免这个问题，电感器被连接在电缆上，以形成电缆的电容并联谐振电路。并联谐振电路的阻抗是无限大的，从而避免了杂散电缆电容对测量信号的衰减。

12. 发明授权

US06186001B1 Sensor for measuring content levels in containers 失效
标题翻译：用于测量容器内容物含量的传感器
公开(公告)号：US06186001B1
公开(公告)日：2001-02-13
申请号：US09336532
申请日：1999-06-18
申请人： William J. Baker
发明人： William J. Baker
IPC分类号： G01F2326
CPC分类号： G01F23/268
摘要： A container level sensor is disclosed comprising an elongate strip member for mounting in a container in a generally upright orientation. The strip member has a measurable capacitance that changes as the level of material stored in the container changes. Two insulated conductive strips, held apart by magnetic forces or resilient spacers, can be used to form a capacitor, with the force of material in the container against the sensor pushing the strips together and thereby changing the capacitance. This change can be measured by a circuit.
摘要翻译：公开了一种容器液位传感器，其包括用于以大致直立的方向安装在容器中的细长条形构件。带状构件具有可测量的电容，随容器中存储的材料的水平变化而改变。通过磁力或弹性间隔物分开的两个绝缘导电条可用于形成电容器，容器内的材料的力抵靠传感器将条带推到一起，从而改变电容。这种变化可以通过电路来测量。

13. 发明授权

US06782747B2 Capacitive fill level measuring instrument 失效
标题翻译：电容式液位测量仪
公开(公告)号：US06782747B2
公开(公告)日：2004-08-31
申请号：US10361021
申请日：2003-02-10
申请人： Jochen Gundlach , Werner Hoch , Jaromir Palata
发明人： Jochen Gundlach , Werner Hoch , Jaromir Palata
IPC分类号： G01F2326
CPC分类号： G01F23/266
摘要： A capacitive fill level measuring instrument includes a fill level sensor having several sensor arrays (1), electrical lines (2) connected to the sensor arrays (1), select switches (4) with multi-pole sides (3) connected to the lines (2), and a power supply and evaluation circuit (8) having a power supply circuit (6) and an evaluation circuit (7) connected to the mono-pole sides of the select switches (4). A measured value is determined for a state in which no sensor array (1) is connected via the evaluation circuits (7) and (8), the sensor arrays (1) are alternately connected to the multi-pole side (3) of the first select switch (4) and the multi-pole side (3) of the second select switch (4), and after a first fill level determination, the sensor arrays (1), adjacent to a boundary layer, are triggered or interrogated, advantageously, solving various problems with background art devices.
摘要翻译：一种电容式填充液位测量仪器包括一个具有多个传感器阵列（1），连接到传感器阵列（1）的电气线（2），连接到线路的多极侧（3）的选择开关（4）（2）和具有连接到选择开关（4）的单极侧的电源电路（6）和评估电路（7）的电源和评估电路（8）。对于传感器阵列（1）经由评估电路（7）和（8）连接的状态来确定测量值，传感器阵列（1）交替地连接到所述传感器阵列（1）的多极侧（3）第一选择开关（4）和第二选择开关（4）的多极侧（3）的第一选择开关（4），并且在第一填充水平确定之后，与边界层相邻的传感器阵列（1）被触发或询问，有利地解决背景技术设备的各种问题。

14. 发明授权

US06761067B1 Scanning capacitive array sensor and method 有权
标题翻译：扫描电容阵列传感器和方法
公开(公告)号：US06761067B1
公开(公告)日：2004-07-13
申请号：US10170831
申请日：2002-06-13
申请人： David Capano
发明人： David Capano
IPC分类号： G01F2326
CPC分类号： G01F23/265 , G01F23/268
摘要： A sensor for use in determining a level of a medium or detecting an object includes a plurality of spaced-apart electrically conductive members disposed on a nonconductive support. Each of the conductive members are connected to an astable multivibrator for selectively generating a first plurality of signals each having a frequency based on a capacitive value due to a respective conductive member, an at least one ground member, and at least one of an absence of the medium and a presence of the medium. A microcontroller enables determining the level of the medium or detection of the object based on the frequencies of the first plurality of generated signals. The microcontroller may be configured for compensating for buildup of a material on the sensor to enhance the accuracy of the sensor. Self-correcting features and safety features employed in the sensor are also disclosed.
摘要翻译：用于确定介质的水平或检测物体的传感器包括设置在非导电支撑件上的多个间隔开的导电构件。每个导电构件连接到不稳定的多谐振荡器，用于选择性地产生第一多个信号，每个信号具有基于相应的导电构件，至少一个接地构件的电容值的频率，以及至少一个不存在介质和介质的存在。微控制器可以基于第一多个产生的信号的频率来确定介质的电平或对象的检测。微控制器可以被配置为补偿传感器上的材料的积聚，以增强传感器的精度。还公开了传感器中采用的自校正特征和安全特征。

15. 发明授权

US06520011B2 Powder detecting capacitance-type sensor 失效
标题翻译：粉末检测电容型传感器
公开(公告)号：US06520011B2
公开(公告)日：2003-02-18
申请号：US09865617
申请日：2001-05-29
申请人： Akira Nakamura
发明人： Akira Nakamura
IPC分类号： G01F2326
CPC分类号： G01F23/261
摘要： A powder detecting capacitance-type sensor having a protection cover disposed inside of a powder tank so as to cover a sensor body. The protection cover is made of porous material to permit compressed air to communicate from an inner surface to an outer surface of the protection cover. The protection cover is made of half-sinter of e.g. polyethylene. Also, a space, which is enclosed by the protection cover, the cover guide and the sensor body, is in communication with an air inlet. Thus, compressed air can be introduced into the air inlet and blown outside through the protection cover to prevent powder from attaching or depositing on the protection cover.
摘要翻译：一种粉末检测电容式传感器，其具有设置在粉末箱内部以覆盖传感器主体的保护盖。保护盖由多孔材料制成，以允许压缩空气从保护盖的内表面到外表面连通。保护盖由例如半烧结体制成。聚乙烯此外，由保护盖，盖引导件和传感器主体包围的空间与进气口连通。因此，可以将压缩空气引入空气入口并通过保护盖向外吹出，以防止粉末附着或沉积在保护盖上。

16. 发明授权

US06490920B1 Compensated capacitive liquid level sensor 失效
标题翻译：补偿电容式液位传感器
公开(公告)号：US06490920B1
公开(公告)日：2002-12-10
申请号：US09513182
申请日：2000-02-25
申请人： Yishay Netzer
发明人： Yishay Netzer
IPC分类号： G01F2326
CPC分类号： G01F23/268 , G01C9/06 , G01C9/20 , G01C2009/062 , G01F23/266
摘要： A fringing-field capacitive liquid level sensor comprising an electrically insulating substrate, having a first and a second pattern of conductive capacitance plates plated on the substrate. Each pattern constitutes a fringing-field capacitor having a capacitance the value of which is both dependent on the liquid level and dependent on the dielectric constant of the liquid. The ratio of the two capacitances, however, is proportional to the liquid level and independent of the dielectric constant of the liquid. The fringing-field capacitive liquid level sensor may be used for measurement of liquids of substantially any dielectric constant without requiring full-scale calibration or knowledge of, and calibration for, dielectric constant of the liquid to be measured. Compensation for tilt angle can be provided through the addition of a second level sensor.
摘要翻译：一种边缘场电容式液位传感器，包括电绝缘基板，其具有镀在基板上的导电电容板的第一和第二图案。每个图案构成边缘场电容器，其电容值取决于液位并取决于液体的介电常数。然而，两个电容的比例与液面成比例，而与液体的介电常数无关。边缘场电容液位传感器可用于测量基本上任何介电常数的液体，而不需要对待测液体的介电常数进行全尺寸校准或了解并校准。可以通过添加第二级传感器来提供倾斜角的补偿。

17. 发明授权

US06345532B1 Method and device for determining the quantity of product present in a reservoir, a product reservoir and a device for processing electrical signals intended for such a determination device 失效
标题翻译：用于确定存储在储存器中的产品的数量的方法和装置，产品储存器和用于处理用于这种确定装置的电信号的装置
公开(公告)号：US06345532B1
公开(公告)日：2002-02-12
申请号：US09004517
申请日：1998-01-08
申请人： Pascal Coudray , Marie-Hélène Froger
发明人： Pascal Coudray , Marie-Hélène Froger
IPC分类号： G01F2326
CPC分类号： B41J2/17566 , G01F23/266
摘要： A device determines a quantity of product present in a reservoir, particularly a quantity of ink in the reservoir (112) of an image formation device, such as a printer (10). In a preferred embodiment, the devices includes means (120, 113, 123) of connecting the said product to a predetermined potential, means (121, 122) of establishing a first electrical field through the product, and adapted to establish a second electrical field different from the first electrical field, means (122), of measuring electrical fields in order to produce first and second electrical signals representing electrical fields, and means (100) of processing the first electrical signal in order to produce a signal representing the quantity of product, and adapted to process the second electrical signal in order to detect the interruption of the connection of the product to the predetermined potential, the said interruption corresponding to a predetermined quantity of product present in the reservoir (112).
摘要翻译：设备确定储存器中存在的产品的数量，特别是图像形成装置（例如打印机）的储存器（112）中的墨水量。在优选实施例中，所述装置包括将所述产品连接到预定电位的装置（120,113,123），所述装置（121,122）通过所述产品建立第一电场，并适于建立第二电场与第一电场不同的是测量电场以便产生表示电场的第一和第二电信号的装置（122），以及处理第一电信号的装置（100），以便产生表示电场的数量的信号产品，并且适于处理第二电信号，以便检测产品与预定电位的连接的中断，所述中断对应于存储在存储器（112）中的预定量的产品。

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