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91.发明授权Force sensor having an adjustable distance between an operating point and a point of mechanical instability 有权力传感器在工作点和机械不稳定点之间具有可调节的距离
公开(公告)号：US6012341A
公开(公告)日：2000-01-11
申请号：US91315
申请日：1998-09-23
Applicant: Karsten Funk , Hans-Martin Kulcke , Franz Laermer , Werner Uhler , Andrea Schilp
Inventor： Karsten Funk , Hans-Martin Kulcke , Franz Laermer , Werner Uhler , Andrea Schilp
IPC: G01L1/10 , G01L9/00 , G01P15/097 , G01P15/10
CPC classification number: G01P15/097 , G01L1/10 , G01L9/0008
Abstract: A force sensor, especially an acceleration sensor or a pressure sensor, has a structure that vibrates in resonance, and its oscillation frequency is variable due to an acting force which is to be detected. The distance of an operating point of the force sensor from the point of its mechanical instability can be adjusted by applying an electric voltage.
Abstract translation: PCT No.PCT / DE96 / 02070 Sec。 371日期：1998年9月23日 102（e）1998年9月23日PCT PCT 1996年10月31日PCT公布。 公开号WO97 / 22864 日期：1997年6月26日力传感器，特别是加速度传感器或压力传感器具有振动的结构，其振动频率由于待检测的作用力而变化。 可以通过施加电压来调节力传感器的操作点与其机械不稳定性的距离。
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公开(公告)号：US4955240A
公开(公告)日：1990-09-11
申请号：US412428
申请日：1989-09-26
Applicant: Akira Komoto
Inventor： Akira Komoto
IPC: G01L1/10
Abstract: A vibration type force detector comprising: a string to which a force to be measured is applied in the direction in which the string is tensioned; a driver for causing the string to vibrate at its natural frequency and simultaneously producing a series of pulses at a frequency in synchronism with the vibration of the string; a gate to which the series of pulses are applied; a counter for counting the series of pulses that have passed through the gate; means for providing a gating time determined in accordance with the result of the counting of the counter; and a controller for controlling the gate in accordance with the gating time. The gating time providing means is so arranged that as the vibration frequency of the string increases, the gating time lengthens.
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公开(公告)号：US4914962A
公开(公告)日：1990-04-10
申请号：US250157
申请日：1988-09-28
Applicant: David J. Clements
Inventor： David J. Clements
CPC classification number: G01L1/10 , G01F23/0023 , G01F23/2966 , G01L9/0013 , G01N9/002 , G01N11/16
Abstract: A vibrating strip transducer, wherein a vibrating strip 54 mounted between a fixed mount 52 and a moveable mount 51 and under load 53 directly responds to a change in force applied to the strip with a change in the magnitude of stress in the strip. The change in stress produces a corresponding change in the resonant frequency of vibrating strip 54 which is detected by coil assembly 55 to output a frequency based signal directly related to the force applied. Fluid level and buoyancy sensing embodiments are also disclosed.
Abstract translation: 一种振动带式换能器，其中安装在固定支架52和可移动支架51之间以及负载53之下的振动条54直接响应于条带中的应力大小变化而施加到条带上的力的变化。 应力的变化产生由线圈组件55检测的振动条54的谐振频率的相应变化，以输出与施加的力直接相关的基于频率的信号。 还公开了液位和浮力感测实施例。
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公开(公告)号：US4348673A
公开(公告)日：1982-09-07
申请号：US217700
申请日：1980-12-18
Applicant: David A. Richardson
Inventor： David A. Richardson
Abstract: Instrument system including an electronic transmitter for a vibrating-wire differential-pressure sensor at a field location and connected by a two-wire line to a control room. The transmitter includes an oscillator to produce vibrations of the wire at its resonant frequency, and applies to the two-wire line a corresponding alternating voltage signal. The control room equipment converts this raw measurement data to an analog measurement signal. The control room equipment provides for adjustment of the zero and span of this signal, and for linearization with respect to the input differential pressure. The two-wire line carries a direct-current component the average value of which is automatically adjusted at the control room to match the scaled and linearized analog measurement signal. This line current passes through a meter at the transmitter to provide field service personnel with a visual indication of the value of the scaled and linearized measurement signal.
Abstract translation: 仪器系统包括用于现场位置的振弦式差压传感器的电子发射器，并通过双线线路连接到控制室。 发射机包括振荡器，以在其谐振频率处产生线的振动，并且向双线线路施加相应的交流电压信号。 控制室设备将此原始测量数据转换为模拟测量信号。 控制室设备提供对该信号的零点和跨度的调整，并且用于相对于输入压差的线性化。 双线线路携带直流分量，其平均值在控制室自动调整，以匹配缩放和线性化的模拟测量信号。 该线路电流通过发射器处的仪表，为现场维修人员提供缩放和线性化测量信号的值的可视指示。
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公开(公告)号：US4329775A
公开(公告)日：1982-05-18
申请号：US35734
申请日：1979-05-03
Applicant: Everett O. Olsen , James R. LaCroix , Hoel L. Bowditch
Inventor： Everett O. Olsen , James R. LaCroix , Hoel L. Bowditch
CPC classification number: G01L9/0013 , G01L1/10 , G01L13/025 , Y10S73/01 , Y10T29/4908
Abstract: The method of making a force-responsive instrument of the type including a tensioned wire of round cross-section to be vibrated perpendicular to the wire axis, wherein said instrument includes field-producing magnetic means operable with said wire to induce vibration; said method including the steps of:positioning said wire in a magnetic field directed perpendicularly to the wire axis;vibrating said wire by electrical means connected to the wire and arranged to develop interaction with said magnetic field;developing an electrical signal proportionately responsive to the magnitude of vibrations of said wire;effecting relative rotation between said wire axis and said magnetic field while maintaining constant the intensity of said magnetic field;making measurements of the amplitude of the signal developed by said wire;determining from said measurements the position of said wire relative to said magnetic field providing maximum signal amplitude; andfixing said wire in said instrument in said position relative to said magnetic means.
Abstract translation: 制造包括圆形横截面的拉线的垂直于线轴振动的类型的力响应仪器的方法，其中所述仪器包括可用所述线操作以产生振动的场产生磁性装置; 所述方法包括以下步骤：将所述线定位在垂直于线轴线的磁场中; 通过连接到电线的电气装置振动所述电线，并布置成发展与所述磁场的相互作用; 根据所述线的振动的大小成比例地产生电信号; 在所述线轴和所述磁场之间产生相对旋转，同时保持所述磁场的强度恒定; 对由所述线产生的信号的振幅进行测量; 从所述测量确定所述导线相对于提供最大信号幅度的所述磁场的位置; 以及将所述电线固定在所述仪器中相对于所述磁性装置的所述位置。
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Patent Agency Ranking96.发明授权Method and apparatus for sensing and maintaining oscillations in an oscillating system 失效用于感测和保持振荡系统中的振荡的方法和装置
公开(公告)号：US4257010A
公开(公告)日：1981-03-17
申请号：US760800
申请日：1977-01-19
Applicant: Sven A. Bergman , Per J. Ohlsson , Karl-Gustav E. Nordqvist
Inventor： Sven A. Bergman , Per J. Ohlsson , Karl-Gustav E. Nordqvist
Abstract: A method and apparatus for delivering energy to an oscillatory system in a signal transmitter to maintain the system in a state of oscillation. A component of the oscillatory system that affects the oscillation frequency is influenced by the magnitude of a measured condition which is to be transmitted by the signal transmitter. The oscillatory state of the system is sensed through a signal path, and energy is delivered to the system through substantially the same signal path, said energy being delivered in the form of pulses at time intervals longer than a whole period of oscillation of the system to maintain the system in a state of oscillation.
Abstract translation: 一种用于将能量传递到信号发射器中的振荡系统以将系统维持在振荡状态的方法和装置。 影响振荡频率的振荡系统的分量受到信号发射机要发射的测量条件的大小的影响。 通过信号路径感测系统的振荡状态，并且通过基本上相同的信号路径将能量传送到系统，所述能量以比系统的整个振荡周期更长的时间间隔以脉冲的形式传送到 保持系统处于振荡状态。
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公开(公告)号：US4240289A
公开(公告)日：1980-12-23
申请号：US969542
申请日：1978-12-14
Applicant: Kaspar Saner
Inventor： Kaspar Saner
Abstract: A mass and force meter comprising, a frame, a load support connected to said frame; a measuring system comprising two dynamometers, a reference base and a force input; a load spring mounted between said frame and said load support, and a measuring spring mounted between said load support and said force input, said load spring being at least ten times stronger than said measuring spring, said load spring and said measuring spring eliminating partly or completely force-reducing lever systems in mass meters and allowing, if required, the linearization of non-linear characteristics of several components of the meter.
Abstract translation: 一种质量和力量计，包括：框架，连接到所述框架的负载支撑件; 测量系统，包括两个测力计，参考基座和力输入; 安装在所述框架和所述负载支撑件之间的负载弹簧和安装在所述负载支撑件和所述力输入之间的测量弹簧，所述负载弹簧比所述测量弹簧强至少十倍，所述负载弹簧和所述测量弹簧消除部分或 以质量计量的全部减压杠杆系统，如果需要，允许将仪表的几个部件的非线性特性线性化。
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公开(公告)号：US4149422A
公开(公告)日：1979-04-17
申请号：US732130
申请日：1976-10-13
Applicant: Everett O. Olsen , Howard W. Nudd, Jr.
Inventor： Everett O. Olsen , Howard W. Nudd, Jr.
Abstract: A pressure measuring instrument of the vibrating-wire type comprising an elongate base on which is pivotally mounted an elongate lever parallel to the base. A vibratory wire in the form of a very thin flat ribbon of tungsten is held tautly between the lever and the base. A pair of bellows are supported on the base, on opposite sides of the pivot mounted for the lever, and apply a torque to the lever proportional to differential pressure. Counterbalance means are provided to prevent errors with changes in spatial orientation of the instrument. The lever support-structure is formed of a composite of elements providing a match of temperature expansion characteristics with the vibratory wire. An overrange protection mechanism prevents the application of excessive force to the wire.
Abstract translation: 一种振弦式压力测量仪器，包括一个细长的基座，在该底座上可转动地安装一个平行于底座的细长杆。 形成非常薄的钨扁平带形的振动线被拉紧在杠杆和底座之间。 一对波纹管支撑在基座上，在为杠杆安装的枢轴的相对侧上，并向杠杆施加与压差成比例的扭矩。 提供平衡装置以防止仪器空间方位变化的错误。 杠杆支撑结构由提供温度膨胀特性与振动线匹配的元件的复合材料形成。 超量程保护机构防止对电线施加过大的力。
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公开(公告)号：US4147224A
公开(公告)日：1979-04-03
申请号：US798481
申请日：1977-05-19
Applicant: Peter A. George , Harold Crystal
Inventor： Peter A. George , Harold Crystal
Abstract: Apparatus for weight measurement comprising a wire mounted for tensioning by a weight to be measured, means for resonating the wire, means for measuring the frequency of resonation, at least one programmable read only memory (PROM) fed from the means for measuring the frequency of resonation and programmed to provide output signals indicative of the weight applied to the wire, and digital display means fed from said PROM.
Abstract translation: 用于体重测量的装置，包括安装成用于通过被测量的张力张紧的线，用于谐振线的装置，用于测量谐振频率的装置，至少一个可编程只读存储器（PROM），其从用于测量频率的装置 谐振并被编程以提供指示施加到导线的重量的输出信号，以及从所述PROM馈送的数字显示装置。
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公开(公告)号：US3435377A
公开(公告)日：1969-03-25
申请号：US3435377D
申请日：1966-03-04
Applicant: GEN DYNAMICS CORP
Inventor： FRANKLIN RICHARD N
CPC classification number: G01L1/10
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