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公开(公告)号：US4458770A
公开(公告)日：1984-07-10
申请号：US414297
申请日：1982-09-02
申请人： George Bucci
发明人： George Bucci
摘要： A platform scale in which the force applied to the platform is transmitted to a capacitance transducer whereby the output of the transducer is correlated to the force on the platform. The transducer includes two parallel square plates spaced apart and insulated from each other. Each plate has four slots, one projecting inwardly from each edge of each plate and each slot being generally parallel to the adjacent edge whereby each plate has four identical cantiliver beams. The free ends of each beam of one plate are connected to but insulated from the free ends of the corresponding beams of the other plate. The space between the plates constitutes the dielectric of the transducer and this space is reduced by an amount virtually correlated to the force applied to the platform so that the output of the transducer is very closely correlated to the force applied to the platform on the scale.
摘要翻译： 其中施加到平台的力被传递到电容换能器的平台尺度，由此换能器的输出与平台上的力相关。 换能器包括彼此间隔开并绝缘的两个平行的方形板。 每个板具有四个槽，一个从每个板的每个边缘向内突出，每个槽大致平行于相邻边缘，每个板具有四个相同的悬臂梁。 一个板的每个梁的自由端连接到另一个板的相应梁的自由端绝缘。 板之间的空间构成换能器的电介质，并且该空间减小了与施加到平台的力实际相关的量，使得换能器的输出与施加到秤上的平台的力非常密切相关。
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公开(公告)号：US4273204A
公开(公告)日：1981-06-16
申请号：US910804
申请日：1978-05-30
申请人： Adelbert M. Gillen
发明人： Adelbert M. Gillen
CPC分类号： G01G7/06
摘要： A weight scale includes a capacitive force load cell for linearly transducing force into electrical capacity. A C-shaped spring supports two capacitor plates adjacent the distal ends of the arms with the surfaces of the plates being normally parallel. Weight is transmitted from the platform of the scale to a pin which acts to separate the arms against the spring force. The plates are shaped, preferably triangularly, so that the change in capacitance as they separate is linear. The load cell is connected in circuit with an oscillator so that the change in capacitance is directly proportional to change in frequency as a measure of the weight of the load on the scale's platform.
摘要翻译： 重量级包括用于将力线性地转换成电容的电容力测力传感器。 C形弹簧支撑邻近臂的远端的两个电容器板，其中板的表面通常是平行的。 重量从秤的平台传递到用于分离臂抵抗弹簧力的销。 板被成形为优选三角形，使得它们分离时的电容变化是线性的。 称重传感器与振荡器连接在一起，使得电容变化与频率变化成正比，作为衡量秤平台负载重量的度量。
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公开(公告)号：US4237989A
公开(公告)日：1980-12-09
申请号：US38328
申请日：1979-05-11
申请人： Howard B. Lewis
发明人： Howard B. Lewis
CPC分类号： G01G7/06
摘要： A capacitive load cell having a body fabricated of a ceramic material and having substantially rigid outer arms and a relatively flexible central arm. Electrically conductive plates are carried by the arms in facing relationship, and a load is applied to the central arm to flex the same and change the spacing between the plates.
摘要翻译： 一种电容性测力传感器，其具有由陶瓷材料制成并具有基本刚性的外臂和相对柔性的中心臂的主体。 导电板以面对的关系由臂承载，并且负载施加到中心臂以使其弯曲并改变板之间的间隔。
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94.发明授权
公开(公告)号：US4223751A
公开(公告)日：1980-09-23
申请号：US24071
申请日：1979-03-26
申请人： Joseph W. Ayers , Rex C. Wood
发明人： Joseph W. Ayers , Rex C. Wood
IPC分类号： G01G11/00 , B07C5/16 , B07C5/36 , G01F17/00 , G01G7/06 , G01G19/03 , G01G3/14 , B07C5/344 , G01G19/52 , H01G5/04
摘要： A dielectric tube, such as glass or plastic, having a square cross section extends between the two plates of a capacitance-sensing transducer. The opposite sides of the tube have a spacing only slightly greater than the diameter of the capsules to be checked. The capsules to be classified are oriented prior to their introduction into the tube so that they enter in an end-to-end relationship. The requisite spacing between the capsules is accomplished by an air jet device that rapidly accelerates the leading capsule as it enters the tube to such a velocity that it leaves the transducer before the next capsule enters, thereby assuring that only one capsule is in the transducer at any given moment. The capacitance-sensing transducer is repeatedly charged and discharged by means of a high frequency oscillator circuit. Capacitance variations from capsule to capsule are measured on a continuous analog basis and logic signals derived from such analog signals are used to determine whether a given capsule should be accepted or rejected. A reject mechanism diverts each bad capsule from the stream of acceptable or good capsules.
摘要翻译： 具有正方形横截面的电介质管例如玻璃或塑料在电容感测换能器的两个板之间延伸。 管的相对侧具有稍微大于待检查的胶囊的直径的间隔。 要分类的胶囊在其引入管之前定向，使得它们以端对端的关系进入。 胶囊之间所需的间隔是通过一种空气喷射装置实现的，当空气喷射装置进入管时，前导胶囊快速加速到其下一个胶囊进入之前离开换能器的速度，从而确保在换能器中只有一个胶囊 任何给定的时刻 电容感测传感器通过高频振荡器电路反复充电和放电。 在连续模拟的基础上测量胶囊到胶囊的电容变化，并使用从这种模拟信号得到的逻辑信号来确定给定胶囊是否应被接受或拒绝。 拒收机构将每个坏胶囊从可接受的或好的胶囊流中分离出来。
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公开(公告)号：US4191268A
公开(公告)日：1980-03-04
申请号：US877840
申请日：1978-02-15
申请人： Tsutomu Miyoshi , Shuichi Yanagita , Yushi Komachi
发明人： Tsutomu Miyoshi , Shuichi Yanagita , Yushi Komachi
CPC分类号： G01G3/02 , G01G19/46 , G01G23/37 , G01G7/06 , Y10S177/03
摘要： A weighing machine wherein a mechanical change corresponding to weight of a body to be measured is taken out as an electric signal thereby to provide digital indication of the weight comprises a base body, a metering spring, a load supporting link associated with the metering spring and movable to displace the metering spring in response to the weight, a fixed electrode plate consisting of an electrically conductive flat plate secured to the base body, a movable electrode plate interlocked with the load supporting link and consisting of an electrically conductive flat plate intended to provide capacitance between the fixed and movable electrode plates and a digital indication and processing circuit for detecting change in the capacitance to provide digital indication of the weight. The digital indication and processing circuit comprises preferably an oscillator including capacitance as a component of an oscillating time constant and a converter for converting the change in oscillating frequencies of the oscillator to a digital amount representative of the weight.
摘要翻译： 一种称重机，其中将与要测量的物体的重量相对应的机械变化作为电信号取出，从而提供重量的数字指示，包括基体，计量弹簧，与计量弹簧相关的负载支撑连杆， 可移动以响应于重量而移动计量弹簧，由固定到基体的导电平板组成的固定电极板，与负载支撑连杆互锁并由导电平板组成的可动电极板，该导电平板旨在提供 固定电极板和可动电极板之间的电容以及用于检测电容变化以提供重量数字指示的数字指示和处理电路。 数字指示和处理电路优选地包括包括作为振荡时间常数的分量的电容的振荡器和用于将振荡器的振荡频率的变化转换为代表该权重的数字量的转换器。
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公开(公告)号：US4102422A
公开(公告)日：1978-07-25
申请号：US674972
申请日：1976-04-08
摘要： A device comprises for sensing or measuring loads, especially transient loads, such as a load imposed by a wheel of a vehicle driving over the device. The device comprises two electrically conductive plates and an intermediate dielectric and elastomeric or elastic material. In a central plane of the dielectric material a series of threads of steel wire is embedded. Said threads are connected together electrically at one end. At least two spaced capacitor electrodes are constituted by one plate and said threads. The dielectric and elastomeric material is adapted to be engaged by the load and the variation in the capacitance is linearly proportional to the magnitude of the applied load. The two plates are pressed towards each other in order to cause a mechanical preloading of the intermediate material in order to give said linear proportionality.
摘要翻译： 一种装置包括用于感测或测量载荷，特别是瞬时载荷，例如由在装置上行驶的车辆的轮施加的载荷。 该装置包括两个导电板和中间电介质和弹性或弹性材料。 在电介质材料的中心平面内嵌有一系列钢丝线。 所述螺纹在一端电连接在一起。 至少两个间隔开的电容器电极由一个板和所述螺纹构成。 电介质和弹性体材料适于被负载接合，并且电容的变化与所施加的负载的大小成线性比例。 为了给出所述线性比例性，将两个板彼此挤压以引起中间材料的机械预加载。
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公开(公告)号：US3332506A
公开(公告)日：1967-07-25
申请号：US46973665
申请日：1965-07-06
申请人： NAT RES DEV
发明人： GEOFFREY BRADFIELD
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公开(公告)号：US2793026A
公开(公告)日：1957-05-21
申请号：US36384953
申请日：1953-06-24
申请人： LORIS GIARDINO , VITTORIO FAENZA
发明人： LORIS GIARDINO , VITTORIO FAENZA
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99.发明申请公开(公告)号：US20210080316A1
公开(公告)日：2021-03-18
申请号：US17103364
申请日：2020-11-24
摘要： Systems, apparatus and methods are provided for measuring moving vehicle information. Moving vehicle information may be measured by a sensor configured to respond to one or more wheels of the moving vehicle, where one or more of the wheels change the characteristic impedance of the sensor at the wheel's contact location. An electrical time domain reflectometry signal processing system which is capable of measuring the change in the impedance of the sensor and converting the impedance change to a signal may be connected operatively to the sensor. A data-processing system receives the signal and extracts the moving vehicle information therefrom.
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100.发明授权公开(公告)号：US10859430B2
公开(公告)日：2020-12-08
申请号：US15839432
申请日：2017-12-12
摘要： An apparatus includes a sensor assembly. The sensor assembly includes a transmission-line assembly having an electrical transmission-line parameter configured to change, at least in part, in response to reception, at least in part, of a vehicular load of a moving vehicle moving relative to a vehicular roadway to the transmission-line assembly positionable, at least in part, relative to the vehicular roadway.
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