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公开(公告)号：US4550610A
公开(公告)日：1985-11-05
申请号：US555822
申请日：1983-11-28
申请人： Errol P. EerNisse
发明人： Errol P. EerNisse
CPC分类号： G01L9/0022
摘要： A quartz resonator pressure transducer includes a generally disc-shaped resonator section, a housing surrounding the resonator section and joined to the perimeter thereof, with the walls of the housing extending in opposite directions generally normal to the plane of the resonator section. Selected portions of the sidewalls are made thinner than the remaining sidewall portions so that when the housing is immersed in a fluid, a non-uniform stress will be produced in the resonator section. The housing and resonator section are formed so that the frequency of vibration of the resonator section is substantially independent of temperature and relatively independent of temperature transients.
摘要翻译： 石英谐振器压力传感器包括大致圆盘形的谐振器部分，围绕谐振器部分并且连接到其周边的壳体，壳体的壁沿着大致垂直于谐振器部分的平面的相反方向延伸。 使侧壁的选定部分比剩余的侧壁部分薄，使得当壳体浸入流体中时，谐振器部分中将产生不均匀的应力。 壳体和谐振器部分形成为使得谐振器部分的振动频率基本上与温度无关并且相对独立于温度瞬变。
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公开(公告)号：US4541284A
公开(公告)日：1985-09-17
申请号：US592970
申请日：1984-03-23
申请人： Renato Guagliumi , Giampiero Perga
发明人： Renato Guagliumi , Giampiero Perga
CPC分类号： G01L9/0001 , F02M65/003 , F02B3/06 , Y10S73/04
摘要： A device for monitoring the pressure of fluid in an electrically conductive duct, such as an injection duct of a diesel engine, includes at least one electrical pressure transducer connectible mechanically and electrically to the outer surface of the duct, and support means for keeping the transducer in connection with the duct. A rigid casing for surrounding and protecting the support means and the transducer is formed in two parts which are hinged together so as to clamp the transducer to the duct. This casing is constituted at least in part by an electrically conductive material and has an internal electrical connection with the output of the transducer, whereby signals output by the transducer in operation can be picked up directly by the casing.
摘要翻译： 用于监测诸如柴油发动机的喷射管道的导电管道中的流体压力的装置包括至少一个电气压力传感器，其机械地和电气地连接到管道的外表面，以及支撑装置，用于保持换能器 与管道相关。 用于围绕和保护支撑装置和换能器的刚性壳体形成为铰接在一起的两个部分，以将换能器夹紧到管道。 该壳体至少部分地由导电材料构成，并且与换能器的输出端具有内部电连接，从而可以由壳体直接拾取由换能器输出的信号。
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公开(公告)号：US4512198A
公开(公告)日：1985-04-23
申请号：US636515
申请日：1984-08-01
申请人： Bikash K. Sinha , Michel Gouilloud
发明人： Bikash K. Sinha , Michel Gouilloud
CPC分类号： G01L9/0025 , Y10S73/04
摘要： Pressure sensing diaphragms comprise a cylindrical or spherical crystalline member in which an internal cylindrical or spherical chamber is provided. In the internally loaded embodiments, a fluid is introduced into the chamber and the pressure exerted by the fluid causes generally tensile stress in the region of the diaphragm generally about the chamber. In the externally loaded embodiments, the diaphragm is immersed within the fluid and the pressure exerted by the fluid causes generally compressive stress in the region of the diaphragm generally about the chamber. For each of the embodiments, the stresses arising cause certain mechanical and electrical properties of the crystalline material to change. The change in these properties is detected by observing the frequency behavior of one or more oscillators whose frequencies of operation are controlled by respective surface acoustic wave devices provided in the regions of elastic deformation. Many diaphragm arrangements are capable of providing temperature compensated pressure measurements. Two particularly useful orientations for the temperature compensated embodiments are the SST and ST orientations.
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64.发明授权Pressure sensor and soil stress isolation filter arrangement in a pore pressure probe 失效压力传感器和土壤应力隔离过滤器布置在孔隙压力探头中
公开(公告)号：US4453401A
公开(公告)日：1984-06-12
申请号：US357439
申请日：1982-03-12
申请人： Roger Sidey
发明人： Roger Sidey
CPC分类号： G01L9/08 , G01L9/0001 , G01N33/246
摘要： A system for measuring transient pore water pressure in the ground utilizes a probe member having a unique arrangement of a pressure sensor and a soil stress isolation filter. The probe member has a body portion with a hollow cavity defined therein. The pressure sensor in the form of a ceramic transducer is mounted in the cavity, and the filter in the form of a circumferential gap formed on the body communicates with the cavity. The filter is also configured for isolating the sensor from effective soil fabric stresses while allowing access to the transducer by pore water pressure. A coupling medium in the form of silicon grease fills the cavity so as to transmit the pore water pressure to the transducer.
摘要翻译： 用于测量地面瞬时孔隙水压力的系统利用具有压力传感器和土壤应力隔离过滤器的独特布置的探针构件。 探针构件具有其中限定有中空腔的主体部分。 陶瓷换能器形式的压力传感器安装在空腔中，形成在主体上的周向间隙形式的过滤器与空腔相通。 过滤器还被配置为将传感器与有效的土壤织物应力隔离，同时允许孔隙水压力接近换能器。 以硅润滑脂形式的耦合介质填充空腔，以将孔隙水压力传递给换能器。
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公开(公告)号：US4279028A
公开(公告)日：1981-07-14
申请号：US83434
申请日：1979-10-10
申请人： John Lowdenslager , Alan E. Willis
发明人： John Lowdenslager , Alan E. Willis
摘要： A solid state digital watch and barometric pressure indicator having a sealed quartz crystal and a second unsealed quartz crystal which changes frequency with atmospheric pressure changes. The frequency variation of the unsealed quartz crystal is measured over a selected (interrogation) period and some number proportional to the frequency variation, which is indicative of the magnitude of atmospheric pressure change, is displayed with an appropriate sign to indicate increasing or decreasing atmospheric pressure.
摘要翻译： 具有密封石英晶体的固态数字手表和大气压力指示器和随着大气压力变化而频率变化的第二未密封石英晶体。 在选定的（询问）期间测量未密封石英晶体的频率变化，并且与指示大气压力变化的大小的频率变化成比例的一些数字以适当的符号显示，以指示大气压力的增加或减小 。
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公开(公告)号：US4257260A
公开(公告)日：1981-03-24
申请号：US132448
申请日：1980-03-21
CPC分类号： F02M65/003 , G01L23/10 , G01L9/0001 , G01L9/08
摘要： There is disclosed apparatus for sensing cyclically varying pressure in a pipe, particularly but not exclusively for sensing pressure in fuel lines. The apparatus depends on resilient elements which bend symmetrically on pressure change, and transducers producing equal and opposite signals depending on the bending strain. In the first form of apparatus, a ring surrounds the pipe and bears upon it through screws at four spaced points. The ring is on two portions, to be assembled around the pipe. When so assembled, the ring portions bend as beams when the pipe dilates. Symmetrical piezoelectric crystals detect this bending. The second form of apparatus described comprises a pair of similar sensing members in the form of blocks each shaped to embrace a pipe over an arc and to make line contact with the pipe at two spaced locations; the blocks are removably clamped about the pipe. A transducer on each block provides electrical signals in dependence on bending strain in the block due to periodic dilatation of the pipe. The third form of apparatus also employs a pair of similar sensing members each shaped to embrace a pipe over an arc and to make line contact with the pipe at two spaced locations are removably clamped about the pipe. The third form of sensing apparatus also uses transducers one on each member, to provide equal and opposite electrical signals in dependence on bending strain in the members due to period dilation of the pipe.
摘要翻译： 公开了用于感测管道中周期性变化的压力的装置，特别地但不排他地用于感测燃料管线中的压力。 该装置取决于对压力变化对称的弹性元件，以及根据弯曲应变产生相等和相反信号的换能器。 在装置的第一种形式中，环围绕管并通过四个间隔点处的螺钉承载在其上。 环在两部分上，围绕管组装。 当这样组装时，当管扩张时，环部分作为梁弯曲。 对称压电晶体检测这种弯曲。 所描述的第二种形式的装置包括一对块状的类似的传感构件，每一个成形为在圆弧上包围管子，并在两个间隔开的位置使管线接触; 块可拆卸地夹在管子周围。 每个块上的换能器由于管的周期性扩张而依赖于块中的弯曲应变而提供电信号。 装置的第三种形式还采用一对类似的检测构件，每一个成形为在圆弧上包围管道，并且在两个间隔开的位置处与管道线接触可拆卸地围绕管夹紧。 感测装置的第三种形式还使用每个构件上的换能器，以便由于管道的周期扩张而根据构件中的弯曲应变来提供相等和相反的电信号。
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公开(公告)号：US4250759A
公开(公告)日：1981-02-17
申请号：US96501
申请日：1979-11-21
申请人： Otto Z. Vago , Frank S. Irlinger
发明人： Otto Z. Vago , Frank S. Irlinger
摘要： A digital readout gauge is disclosed which, for example, may be a tire pressure gauge which is mounted in a small portable housing. A pressure chamber is formed within the housing with a valve core deflator mounted within the housing to depress the core of a standard tire valve and permit the air pressure within the tire to be introduced into the chamber. A wall of the chamber is movable with changes of pressure and a piezoelectric crystal transducer or strain gauge transducer is mounted to be stressed in accordance with movement of this wall to develop an analog voltage in accordance with the air pressure. An electrical circuit is contained within the housing and energizable by a battery carried within the housing. A power switch is actuated to an on condition by movement of the gauge onto the tire valve to energize the electrical circuit with the analog voltage passed to an analog-to-digital converter and then to a digital readout display to display the digital value of the air pressure within the tire. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
摘要翻译： 公开了一种数字读出量规，其例如可以是安装在小型便携式外壳中的轮胎压力计。 在壳体内形成压力室，其具有安装在壳体内的阀芯平放器，以压缩标准轮胎气门的芯部，并允许轮胎内的空气压力被引入腔室。 腔室的壁可以随着压力的变化而移动，并且安装压电晶体换能器或应变仪换能器以根据该壁的移动而受到应力，以根据空气压力产生模拟电压。 电路容纳在壳体内并由壳体内的电池供电。 电力开关通过将计量器移动到轮胎气门上而致动到开启状态，以使模拟电压通过模数转换器向电路通电，然后到数字读出显示器以显示数字值 轮胎内的气压。 上述摘要仅仅是一般应用的简历，不是所有操作原理或应用的完整讨论，并不被解释为对所要求保护的主题的范围的限制。
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公开(公告)号：US4166967A
公开(公告)日：1979-09-04
申请号：US843215
申请日：1977-10-18
申请人： Ewald Benes , Dieter Hammer
发明人： Ewald Benes , Dieter Hammer
IPC分类号： G01D5/243 , G01K7/32 , G01L1/16 , G01L9/00 , G01L9/08 , G01P15/09 , H03H9/02 , H03H9/05 , H03H9/17 , H01L41/10
CPC分类号： H03H9/17 , A61B8/546 , G01K7/32 , G01L1/162 , G01L9/0022 , G01P15/0907 , H03H9/02094 , G01N2291/02827
摘要： A piezoelectric resonator, particularly for pressure, acceleration, temperature and load transducers, consisting of a resonator core having holding discs on its opposite sides, said holding discs being formed of solid body layers, said layers consisting alternatively of materials having strongly different acoustic impedance for unit cross-sectional area.
摘要翻译： 一种压电谐振器，特别是用于压力，加速度，温度和载荷传感器，由在其相对侧上具有保持盘的谐振器芯组成，所述保持盘由实心体层形成，所述层由具有强不同声阻抗的材料组成， 单位横截面积。
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公开(公告)号：US3791216A
公开(公告)日：1974-02-12
申请号：US3791216D
申请日：1972-09-25
申请人： BENDIX CORP
发明人： BLANCHARD W
CPC分类号： G01L9/0082
摘要： A d.c. voltage is applied through a series resistor to a capacitive piezoelectric device which is part of a cantilevered beam. The beam is thus made to deflect from a starting position until it contacts a grounded aneroid cell thereby partially discharging the piezoelectric device so that it moves back slightly toward the starting position sufficiently to break the ground contact. The capacitive piezoelectric device is thus alternately charged and discharged as the beam alternately makes and breaks ground by contact with the grounded aneroid cell. Since the expansion of the aneroid cell is in response to ambient pressure, the beam deflection as well as the voltage impressed across the piezoelectric device are related to ambient pressure.
摘要翻译： 一个d.c. 电压通过串联电阻器施加到作为悬臂梁的一部分的电容压电器件。 因此，光束从起始位置偏转直到它接触接地的无气体电池，从而部分地排出压电装置，使得其稍微向起始位置稍微移动以足以破坏接地触点。 因此，电容压电器件随着光束交替地交替地被充电和放电，并且通过与接地的无绒毛细胞接触而断开地面。 由于无环电池的膨胀是响应于环境压力，所以光束偏转以及压电装置上施加的电压与环境压力有关。
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公开(公告)号：US3769827A
公开(公告)日：1973-11-06
申请号：US3769827D
申请日：1971-11-03
申请人： HERCULES INC
发明人： MOORE A
摘要： An instrument for electrically measuring pressure changes having a circular bimorph and a thin flexure comprising iron-nickel alloy supporting the circular bimorph at its circumference and said flexure having its outer extremity adapted to support said bimorph in a pressure cell comprising iron-nickel alloy, whereby a high electrical output is obtained from the said bimorph in response to pressure being applied thereto.
摘要翻译： 一种用于电测量压力变化的仪器，其具有圆形双压电晶片和薄弯曲，其包括在其圆周上支撑圆形双压电晶片的铁镍合金，并且所述挠曲件具有外端，适于将所述双压电晶片支撑在包含铁镍合金的压力池中，由此 响应于施加压力而从所述双压电晶片获得高电输出。
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