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公开(公告)号：US4047001A
公开(公告)日：1977-09-06
申请号：US664592
申请日：1976-03-08
CPC分类号： G01C5/06 , G01L9/02 , G01R19/252 , G01R27/00
摘要： The pressure of the atmosphere is sensed by a pressure transducer which causes a resistance to vary. The variance of this resistor is converted to a variable frequency. The number of cycles of this frequency in a set amount of time is counted by a counter and displayed by a digital display.
摘要翻译： 大气的压力由压力传感器感测到，其导致电阻变化。 该电阻的方差被转换为可变频率。 在一定时间内该频率的周期数由计数器计数并由数字显示器显示。
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92.发明授权
公开(公告)号：US3992945A
公开(公告)日：1976-11-23
申请号：US583889
申请日：1975-06-05
申请人： Sherwood P. Judson
发明人： Sherwood P. Judson
CPC分类号： G01L9/0027 , G01L9/02
摘要： A Bourdon pressure gauge is provided with a direct-coupled electronic and visual readout. Specifically, the electronic and visual readouts are direct-coupled in that they are taken along a common linkage from the Bourdon tube. In addition, they are of comparable accuracy because the electrical readout is taken at a point of relatively small displacement amplification on the commmon linkage whereas the visual readout is taken at a point of substantial displacement amplification. In a preferred embodiment, the Bourdon tube is linked to a pivotally mounted linkage element having a cam head for driving a helicoidal gear. An electrical contact in cooperation with resistor disposed on the pivotally mounted element is used to take a variable resistance electrical readout, and a pointer for taking a visual readout is connected to the helicoidal gear. Circuitry is provided for producing an electrical current proportional to the pressure sensed by the tube, and the visual readout provides a readily accessible check on the accuracy of the electrical readout.
摘要翻译： 布尔登压力表提供直接耦合的电子和视觉读数。 具体来说，电子和视觉读数是直接耦合的，因为它们沿着来自波登管的公共连接。 另外，它们具有相当的精度，因为电读数是在通信连接上的位移放大相对较小的点处进行的，而在大量位移放大的点处进行视觉读出。 在优选实施例中，布尔登管连接到具有用于驱动螺旋齿轮的凸轮头的枢转安装的联动元件。 与设置在可枢转地安装的元件上的电阻器配合的电接触被用于采取可变电阻电读出，并且用于取视觉读出的指示器连接到螺旋齿轮。 提供电路以产生与管感测到的压力成比例的电流，并且可视读数提供了对电读数精度的容易检查。
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93.发明授权
公开(公告)号：US3967188A
公开(公告)日：1976-06-29
申请号：US604620
申请日：1975-08-14
申请人： William H. Spencer
发明人： William H. Spencer
摘要： A temperature compensation circuit for sensors of physical variables, such as temperature and pressure, employs an effective constant current source that is sensitive to ambient temperature and which has an adjustable thermal slope and an adjustable output at discrete temperatures. The effective constant current source may be connected across the input terminals of a sensor such as a pressure transducer employing strain gages or it may be connected in series with the excitation current of such a transducer. Additionally, the effective constant current source may be connected in the output of a sensor such as a thermocouple that is responsive to temperature changes. When connected to the input of a sensor, the temperature compensation circuit controls the excitation current through the sensor as a function of the ambient temperature of the sensor and compensation circuit. When connected in the output of the sensor, the temperature compensation circuit provides a voltage that is a function of the ambient temperature, which voltage is added to the output of the sensor to compensate for voltage variations due to changes in ambient temperature.
摘要翻译： 物理变量传感器（如温度和压力）的温度补偿电路采用对环境温度敏感的有效恒流源，并且具有可调节的热斜率和离散温度下的可调输出。 有效的恒流源可以连接在诸如使用应变计的压力传感器之类的传感器的输入端上，或者它可以与这种传感器的激励电流串联连接。 此外，有效的恒流源可以连接在诸如响应于温度变化的热电偶的传感器的输出中。 当连接到传感器的输入端时，温度补偿电路根据传感器和补偿电路的环境温度控制通过传感器的激励电流。 当连接在传感器的输出端时，温度补偿电路提供一个电压，该电压是环境温度的函数，该电压被加到传感器的输出端，以补偿由于环境温度变化引起的电压变化。
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公开(公告)号：US3947692A
公开(公告)日：1976-03-30
申请号：US494751
申请日：1974-08-05
申请人： Viron E. Payne
发明人： Viron E. Payne
CPC分类号： G01F23/241 , G01G5/06 , G01K5/18 , G01L9/0092 , G01L9/02
摘要： A digital transducer comprises a container having two disparate materials therein defining an interface, the interface being movable through the container responsive to a force, or forces, applied to one, or both, of the materials. A plurality of sensors are spaced along the container for sensing the interface, each of which is responsive to the presence of one of the materials. Means are included for suppressing the outputs of all of the sensing means responsive to the one material except that one sensing means which is responsive to the one material and nearest the interface.
摘要翻译： 数字换能器包括容器，其中具有限定界面的两种不同的材料，所述界面可响应于施加到材料中的一种或两种的力或力而移动通过容器。 多个传感器沿着容器间隔开，用于感测接口，每个接口响应于其中一种材料的存在。 包括用于抑制响应于一种材料的所有感测装置的输出的装置，除了响应于该材料并且最接近界面的一个感测装置。
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公开(公告)号：US3908461A
公开(公告)日：1975-09-30
申请号：US48108274
申请日：1974-06-20
申请人： RANDTRON SYSTEMS
发明人： TURPEN OLIVER S
CPC分类号： G01L9/0035
摘要： A pressure transducer assembly for indicating ambient pressure over a predetermined differential pressure range having a minimum and a maximum and operable over a wide range of absolute pressures. A housing having an interior in fluid communication with ambient pressure surrounds a digital signal generator which is protected from ingressing contaminants. The digital signal generator includes a translatable electrical contact member secured to the working end of a surrounding electrically conductive bellows secured at the remaining end to the housing and a stationary multi-resistor assembly having a staggered pair of rows of spaced contact pads and miniature resistors coupled between selected pads in opposite rows to provide a series resistance network whose resistance depends on the position of the contact element, the pads and resistors being supported on an insulated substrate. The multi-resistor assembly is supported by a conductive rod which is translatable in opposite directions along the axis of the housing by a simple adjustment mechanism so that the fixed differential pressure operating range may be shifted over a wide range of absolute pressures. A plurality of transducers are mounted in a sheathed telephone feed cable at regularly spaced positions therealong, with each transducer being electrically connected to a different pair of subscriber conductors so that the pressure at any given location along the feed cable can be determined by applying a test voltage across individual subscriber conductor pairs at a remote location and noting the resistance.
摘要翻译： 压力传感器组件，其用于在超过绝对压力的宽范围内可操作的具有最小和最大值的预定压差范围内指示环境压力。 具有与环境压力流体连通的内部的壳体围绕着数字信号发生器，该数字信号发生器被防止进入污染物。 该数字信号发生器包括一个可平移的电接触构件，其固定在固定在壳体的剩余端部的周围的导电波纹管的工作端上，以及固定的多电阻器组件，其具有交错的一对隔开的接触焊盘和小型电阻 在相对行中的选定焊盘之间提供串联电阻网络，其电阻取决于接触元件的位置，焊盘和电阻器被支撑在绝缘基板上。 多电阻器组件由导电棒支撑，该导电棒可通过简单的调节机构沿着壳体的轴线在相反方向上平移，使得固定压差工作范围可以在宽的绝对压力范围内移动。
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公开(公告)号：US3872725A
公开(公告)日：1975-03-25
申请号：US39138573
申请日：1973-08-24
申请人： US NAVY
发明人： WOJEWSKI THOMAS
摘要： An expandable depthometer is electrically coupled to a pressure sensitive transducer element disposed in a marine environment. The transducer, excited by a power supply, feeds a signal, which is proportional to the depth, back to the depthometer console. A reference level signal is created across a variable resistor to produce a zero reading at selectable datum depth. A full-scale selector switch is positioned to switch in a particular impedance branch to establish a range of operation from a reference-datum level as predetermined by the reference level signal. A single readout meter is capable of showing incremental depth variations of as little as 10-feet to as much as 100-foot increments, in depths in excess of ten-thousand feet.
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公开(公告)号：US3739644A
公开(公告)日：1973-06-19
申请号：US3739644D
申请日：1972-06-30
申请人： GEN ELECTRIC
发明人： UNDERWOOD J , YERMAN A
CPC分类号： G01L13/025 , G01L9/0054 , G01L9/065
摘要： An integral silicon transducer suitable for measuring low differential fluid pressures utilizes a pair of pressure-biased silicon diaphragms coupled by a fill liquid. When sensing a differential pressure, the diaphragms flex to respectively increase and decrease the strain level. By subtracting the individual output signals of the two diaphragms, a more linear transducer output signal is obtained even though the individual diaphragm output signals are nonlinear. A special strain gage pattern is not required, but a unitary fully active bridge is desirable.
摘要翻译： 适用于测量低压差流体压力的整体硅传感器采用一对由填充液体耦合的压力偏置硅隔膜。 当感测到压差时，膜片弯曲以分别增加和减小应变水平。 通过减去两个隔膜的各个输出信号，即使各个隔膜输出信号是非线性的，也获得更线性的换能器输出信号。 不需要特殊的应变计图案，但是需要一个单一的完全有效的桥梁。
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公开(公告)号：US3724274A
公开(公告)日：1973-04-03
申请号：US3724274D
申请日：1971-02-11
申请人： MILLAR INSTRUMENTS
发明人： MILLAR H
IPC分类号： A61B5/0215 , G01L9/00 , G01L9/02 , A61B5/02
CPC分类号： A61B5/0215 , A61B2562/0247 , A61B2562/0261 , G01L9/0052
摘要： A unique pressure transducer is disclosed which has particular application in making physiological measurements such as intraarterial or intra-venous blood pressure measurements. The transducer employs the principle of a cantilever beam which is exposed directly to the source of pressure. The pressure applied to the cantilever beam causes flexure which is measured by a strain gauge, or other means for measuring its deformation, and a related electrical signal is produced.
摘要翻译： 公开了一种独特的压力传感器，其特别应用于进行生理测量，例如动脉内或静脉内血压测量。 传感器采用直接暴露于压力源的悬臂梁的原理。 施加到悬臂梁上的压力导致由应变计或用于测量其变形的其他装置测量的挠曲，并且产生相关的电信号。
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公开(公告)号：US3707874A
公开(公告)日：1973-01-02
申请号：US3707874D
申请日：1971-03-24
申请人： SPATI IND INC
发明人： TUTTLE W
摘要： Device including a temperature sensitive, self-heated impedance means and a spaced apart solid means. Any condition between the impedance means and the solid object which affects the heat transfer therebetween may be sensed by measuring the electrical resistance of the impedance means.
摘要翻译： 装置包括温度敏感的自加热阻抗装置和间隔开的固体装置。 可以通过测量阻抗装置的电阻来检测阻碍装置和固体物体之间影响其间传热的任何状况。
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公开(公告)号：US3600950A
公开(公告)日：1971-08-24
申请号：US3600950D
申请日：1969-08-05
申请人： CHRYSLER CORP
发明人： BERGSMA RUDOLPH
CPC分类号： G01L9/0057
摘要： A fluid pressure responsive transducer of the variable impedance or rheostatic type operative over a wide range of fluid pressures and exhibiting an enhanced or increased sensitivity and response characteristic over a low-pressure portion of the operating range thereof. The device includes a displaceable diaphragm member exposed to a source of variable fluid pressure and variable impedance means operatively responsive to displacement of said member and features a multiple rate spring in the form of a Belleville spring and a coil spring acting upon said member to provide a different rate of response to displacement of said member to low fluid pressures than that presented thereby to higher fluid pressures within the operating range of the device.
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