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公开(公告)号：US5048344A
公开(公告)日：1991-09-17
申请号：US426072
申请日：1989-10-23
Applicant: Gerhard H. Herget , Franz Kapeller
Inventor： Gerhard H. Herget , Franz Kapeller
CPC classification number: E21B49/006 , G01B7/16 , G01L1/10
Abstract: A borehole strain monitor for soft rock consisting of a sensing unit, an installation/retrieval provision and a read-out unit. The sensing unit has a U-shaped yoke and is fitted with a vibrating wire transducer. A magnetically coupled variable frequency oscillator determines the point of resonance for the tensioned wire. The resonant frequency is measured with a frequency counter. The sensing unit is used, typically, in boreholes between two and six inches in diameter. The unit is firmly seated in the borehole by means of a pad at one side and a positively guided wedge at the other to bring the unit in contact with diametrially opposed portions of the borehole wall.
Abstract translation: 用于软岩的井眼应变监测器，包括感测单元，安装/检索设备和读出单元。 感测单元具有U形轭，并配有振弦换能器。 磁耦合可变频率振荡器确定拉紧线的共振点。 谐振频率用频率计数器测量。 感测单元通常用于直径在2至6英寸之间的钻孔中。 该单元通过一侧的垫牢固地安置在钻孔中，另一侧牢固地安置在钻孔中，并且在另一侧通过正向引导的楔形件将该单元与钻孔壁的直径相对的部分接触。
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公开(公告)号：US4544858A
公开(公告)日：1985-10-01
申请号：US616050
申请日：1984-06-01
Applicant: Yuzuru Nishiguchi , Shigeru Uchiyama , Masaaki Kobayashi
Inventor： Yuzuru Nishiguchi , Shigeru Uchiyama , Masaaki Kobayashi
CPC classification number: G01L1/10 , G01G3/165 , G01L1/162 , Y10S177/11
Abstract: A mechanism for converting a weight into a frequency by means of a tuning fork vibrator having a pair of elongated plate-like vibrating strips extending in parallel with each other, a lever unit with a power pivot, fulcrum pivot and a load pivot, and a base portion, both ends of the tuning fork vibrator being coupled with the power pivot of the lever unit and the base portion, respectively by means of thin plate-like members. The weight to be converted is applied to the load pivot of the lever unit and is transferred to the tuning fork vibrator by means of the lever unit. All the parts of the mechanism are formed integrally from a single plate.
Abstract translation: 一种借助于具有彼此平行延伸的一对细长板状振动条的音叉振动器将重量转换成频率的机构，具有动力枢轴，支点枢轴和负载枢轴的杆单元，以及 音叉振动器的两端分别通过薄板状构件与杠杆单元和基座部分的动力枢轴连接。 要转换的重量应用于杠杆单元的负载枢轴，并通过杠杆单元传递到音叉振动器。 机构的所有部分都是从单个板形成的。
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公开(公告)号：US4535638A
公开(公告)日：1985-08-20
申请号：US538171
申请日：1983-10-03
Applicant: Errol P. EerNisse , Roger W. Ward
Inventor： Errol P. EerNisse , Roger W. Ward
Abstract: A method and apparatus for measuring force or other parameters and temperature. The apparatus includes an oscillator and a vibratory element, such as a quartz crystal, which is caused to resonate by the oscillator at two frequencies f.sub.1 and f.sub.2 selected from the fundamental frequency and its overtone frequencies of the vibratory element. The vibratory element is selected so that the two frequencies f.sub.1 and f.sub.2 both vary with variation in force (or other parameter) applied to the element and with variation in temperature of the element, and so that the magnitude or scale factor of variation for frequency f.sub.1 is different from that for frequency f.sub.2. The apparatus also includes a detection device for detecting the frequencies f.sub.1 and f.sub.2 and for producing signals representing the frequency variation of the two frequencies relative to a reference frequency, and a processor for processing the signals produced by the detector device for determining the force (or other parameter) and temperature to which the vibratory element is subjected.
Abstract translation: 用于测量力或其他参数和温度的方法和装置。 该装置包括振荡器和诸如石英晶体的振动元件，其被振荡器以从振动元件的基频和其泛音频率中选出的两个频率f1和f2谐振。 选择振动元件使得两个频率f1和f2都随着施加到元件的力（或其他参数）的变化以及元件的温度变化而变化，并且使得频率f1的变化的幅度或比例因子 与频率f2不同。 该装置还包括用于检测频率f1和f2并用于产生表示相对于参考频率的两个频率的频率变化的信号的检测装置，以及用于处理由检测器装置产生的用于确定力的信号的处理器（或 其他参数）和振动元件所承受的温度。
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公开(公告)号：US4503715A
公开(公告)日：1985-03-12
申请号：US464812
申请日：1983-02-08
Applicant: John C. Greenwood
Inventor： John C. Greenwood
Abstract: An electro-mechanical load sensor is in the form of a mechanical resonant system with electrostatically coupled electrodes. The mechanical system is formed from a silicon wafer by a selective etching process and comprises a filament of between two terminations 12 and 13 carrying transverse plates M.sub.1 and M.sub.2. Electrostatic (capacitive) coupling to plate electrodes E.sub.1, E.sub.2, E.sub.3 in a self-exciting circuit drives the system. The resonant frequency for angular S vibrations with plates M.sub.1 and M.sub.2 in anti-phase varies with applied load L and is thus a measure of this load.
Abstract translation: 机电负载传感器是具有静电耦合电极的机械谐振系统的形式。 机械系统通过选择性蚀刻工艺由硅晶片形成，并且包括承载横向板M1和M2的两个端子12和13之间的细丝。 在自励电路中，静电（电容）耦合到平板电极E1，E2，E3驱动系统。 具有抗相位的板M1和M2的角度S振动的谐振频率随着施加的负载L而变化，因此是该负载的量度。
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公开(公告)号：US4075887A
公开(公告)日：1978-02-28
申请号：US643326
申请日：1975-12-22
Applicant: Mario Gallo
Inventor： Mario Gallo
Abstract: A force and mass meter using two transversally vibrating preloaded strings as the force sensitive members. The two strings are placed in a transverse magnetic field and are caused to vibrate by means of an exciting current flowing across them which is delivered by one exciter each. The exciters consist of a metering bridge, and an operational amplifier deriving the exciting current from the error signal measured across the bridge. Mutual interference of the two exciters is drastically reduced, when the point of common potential of the two exciters is connected with at least one conductor to each of the exciters.
Abstract translation: 使用两个横向振动的预加载弦作为力敏感部件的力和质量计。 两个串被放置在横向磁场中，并且通过流过它们的一个激励电流使其振动，该励磁电流由一个激励器分别输送。 激励器包括一个计量桥和一个运算放大器，从桥上测量的误差信号得出励磁电流。 当两个激励器的共同电位与至少一个导体连接到每个激励器时，两个激励器的相互干扰显着降低。
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Patent Agency Ranking
公开(公告)号：US3889525A
公开(公告)日：1975-06-17
申请号：US49534774
申请日：1974-08-07
Applicant: US INTERIOR
Inventor： BAILEY WILLIAM V
CPC classification number: G01H13/00 , G01G3/16 , G01L1/10 , Y10S73/01 , Y10S331/02
Abstract: A device for measuring and displaying the natural frequency of a wire under tension by magnetically plucking the wire at a selected frequency for a first period and monitoring the mechanical vibrations during a second period. The selected frequency is manually adjusted until the monitored frequency is of sufficient amplitude to be tracked, at which point the selected frequency is electronically adjusted. The tracked frequency is displayed.
Abstract translation: 一种用于测量和显示在张力下的电线的固有频率的装置，用于以选定的频率对所述电线进行磁力拔除第一周期，并且在第二周期期间监测机械振动。 所选择的频率被手动调整，直到监视的频率具有足够的幅度被跟踪，此时所选频率被电子调节。 显示跟踪的频率。
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公开(公告)号：US3813934A
公开(公告)日：1974-06-04
申请号：US33723073
申请日：1973-02-28
Applicant: UNITED AIRCRAFT CORP
Inventor： MEYER R
IPC: G01L1/10
Abstract: A vibrating cylinder, which is electronically driven by a feedback amplifier in response to electromagnetic signals representing the vibrations thereof, is completely surrounded by vacuum and is axially loaded, in tension or compression, whereby the natural frequency thereof varies as a function of the force of axial loading. The loaded end of the cell is sealed to vacuum by a diaphragm. The loading means is connected to a diaphragm of equal area, atmospheric pressure against which loads the cell in a direction oppositely to the first diaphragm, whereby axial loading is equally independent of pressure and density effects. Thermostatic heating obviates temperature variations. A tension embodiment includes a hoop for loading the cylinder, and a compression embodiment comprises a beam-type suspended-pan scale.
Abstract translation: 响应于表示其振动的电磁信号由反馈放大器电子驱动的振动圆筒被真空完全包围并且被拉伸或压缩地轴向加载，由此其固有频率随着 轴向载荷。 电池的负载端通过隔膜被密封到真空。 装载装置连接到相同面积的大气压力的膜片上，该膜片在与第一隔膜相反的方向上加载电池，由此轴向载荷与压力和密度效应相同。 恒温加热消除温度变化。 张力实施例包括用于装载气缸的环，并且压缩实施例包括梁型悬浮盘秤。
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公开(公告)号：US3672220A
公开(公告)日：1972-06-27
申请号：US3672220D
申请日：1970-02-12
Applicant: SOLARTRON ELECTRONIC GROUP
Inventor： AGAR JORAM
CPC classification number: G01L9/0033 , G01L1/10 , G01L1/162 , G01L9/0008 , G01L9/0022 , G01L13/023
Abstract: Force-measuring apparatus having a composite strut with two bars which are to be maintained in transverse vibration at a common resonance frequency by electrical feedback, the frequency of vibration indicating the force applied to the composite strut.
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公开(公告)号：US3403548A
公开(公告)日：1968-10-01
申请号：US56122966
申请日：1966-06-28
Applicant: VYZK USTAV AUTOMATISACNICH PRO
Inventor： MILOS PETRIK , JIRI KRATOCHVIL
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