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公开(公告)号：US4199990A
公开(公告)日：1980-04-29
申请号：US919550
申请日：1978-06-27
IPC分类号： G01P15/08 , G01P15/097
CPC分类号： G01P15/0975
摘要： The invention relates to accelerometers comprising a vibrating elastic body associated with an electrical oscillator for maintaining its oscillations and a frequency measuring device for measuring its frequency. More particularly, the invention relates to an accelerometer in which the vibrations are in the form of elastic surface waves propagated along one face of a wafer of piezoelectric material cemented to a substrate. Measurement of the acceleration is based on the measurement of a frequency deviation or phase shift undergone by the elastic surface waves.
摘要翻译： 本发明涉及包括与用于保持其振荡的电振荡器相关联的振动弹性体的加速度计和用于测量其频率的频率测量装置。 更具体地说，本发明涉及一种加速度计，其中振动呈弹性表面波的形式，沿着胶合到衬底的压电材料的晶片的一个面传播。 加速度的测量是基于由弹性表面波所经历的频率偏差或相移的测量。
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公开(公告)号：US4472692A
公开(公告)日：1984-09-18
申请号：US426908
申请日：1982-09-29
CPC分类号： H03H2/001
摘要： Tunable selective devices utilizing forward magnetostatic bulk waves. A filter is able to act as an oscillator loop or as a passive transmission system in which two resonant cavities including gratings are so arranged that via a selective reflector grating they may exchange magnetostatic bulk waves energized and intercepted by transducers of the microstrip type. The invention relates in particular to the filtering of very high frequency electric signals, and to the production of tunable oscillators and to measuring magnetic fields.
摘要翻译： 利用正向静磁体波的可调谐选择装置。 滤波器能够用作振荡器环路或作为无源传输系统，其中包括光栅的两个谐振腔被布置成通过选择性反射器光栅，它们可以交换由微带型的换能器激励和截取的静磁体波。 本发明特别涉及非常高频电信号的滤波，以及可调谐振荡器的产生以及测量磁场。
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公开(公告)号：US4419637A
公开(公告)日：1983-12-06
申请号：US343752
申请日：1982-01-28
申请人： Gerard Volluet , Pierre Hartemann
发明人： Gerard Volluet , Pierre Hartemann
IPC分类号： H01P9/00 , G10K11/36 , H01L41/12 , H01P1/215 , H01P3/00 , H01P7/00 , H03H2/00 , H03H9/30 , H03H9/40
摘要： A magnetostatic wave device in which waves propagate in a layer of magnetic material grown on a non-magnetic crystalline substrate with a grating arranged in the wave path for modifying propagation velocity. The grating is formed by ion implantation without removal of magnetic material so coupling with spin modes is avoided.
摘要翻译： 一种静磁波装置，其中波浪在非磁性晶体衬底上生长的磁性材料层中传播，其中光栅布置在波道中以改变传播速度。 光栅通过离子注入形成，而不去除磁性材料，因此避免了与自旋模式的耦合。
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公开(公告)号：US4317372A
公开(公告)日：1982-03-02
申请号：US127748
申请日：1980-03-06
申请人： Pierre Hartemann
发明人： Pierre Hartemann
CPC分类号： G01L9/0025 , Y10S73/04
摘要： The present invention relates to a pressure gauge of the type comprising a piezoelectric substrate one face of which is polished and carried two delay lines using interdigital combs forming part of two oscillators whose output signals are mixed. The gauge comprises a two-part case communicating with a pressure gauge inlet, a piezoelectric wafer fixed by its edges to a support, the whole forming a sealed dividing wall with respect to the fluid contained in the inlet, this latter exerting its pressure on the non-polished face of the wafer. A printed circuit carrying the required electronic circuits is connected to the delay lines and inserted between the two parts of the case. A protection device may be provided for avoiding contact between the polished face and polluted air, while maintaining constant pressure on this face.
摘要翻译： 本发明涉及一种类型的压力表，该压力表包括压电基片，其一面被抛光并且使用构成输出信号混合的两个振荡器的一部分的叉指梳并携带两个延迟线。 该计量器包括与压力表入口连通的两部分壳体，由其边缘固定到支撑件的压电晶片，整体形成相对于入口中包含的流体的密封分隔壁，后者施加在 非抛光面的晶片。 携带所需电子电路的印刷电路连接到延迟线并插入到壳体的两个部分之间。 可以提供保护装置，以避免在抛光面和污染空气之间的接触，同时在该面上保持恒定的压力。
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5.发明授权
公开(公告)号：US4314214A
公开(公告)日：1982-02-02
申请号：US166698
申请日：1980-07-03
CPC分类号： H03H2/001
摘要： The invention relates to a magnetostatic-wave device whose ferrimagnetic layer supports an exchange structure formed by an array of conducting strips having their ends connected by conducting bridges. The invention applies particularly to the construction of magnetostatic-wave devices using couplers, hybrid junctions, reflecting mirrors, extraction structures and resonators.
摘要翻译： 本发明涉及一种静磁波器件，其磁化铁层支持由导电条阵列形成的交换结构，导电条的端部通过导电桥连接。 本发明特别适用于使用耦合器，混合结，反射镜，提取结构和谐振器的静磁波器件的结构。
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公开(公告)号：US3987367A
公开(公告)日：1976-10-19
申请号：US499025
申请日：1974-08-20
申请人： Pierre Hartemann
发明人： Pierre Hartemann
IPC分类号： H03D3/16
CPC分类号： H03D3/16
摘要： The invention relates to surface wave discriminator systems comprising a substrate on the surface of which are arranged two electromechanical filters each incorporating two delay lines of dissimilar delay length. The amplitudes of the alternating voltages transmitted by said filters obey laws of variation as a function of the modulating quantity which take the form of sinusoidal half waves, offset by a quarter of a period, making it possible after differential detection to obtain a frequency or phase discrimination characteristic.
摘要翻译： 本发明涉及表面波鉴别器系统，其包括一个表面上的衬底，两个机电滤波器被布置在两个机电滤波器中，每个机电滤波器包括两个不同延迟长度的延迟线。 由所述滤波器发送的交流电压的振幅遵循作为调制量的函数的变化规律，该调制量采取正弦波形的形式，偏移四分之一周期，使得在差分检测之后获得频率或相位成为可能 歧视特征。
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7.发明授权
公开(公告)号：US4697145A
公开(公告)日：1987-09-29
申请号：US694275
申请日：1985-01-24
IPC分类号： G01R33/032 , G01R33/02 , G02B5/30 , G02F1/29 , G02F1/31
CPC分类号： G01R33/0322
摘要： A process and apparatus for measuring a magnetic field based on the Faraday effect rotation of a light beam passing through a ferrimagnetic coating subject to a magnetic field to be measured is shown. The magnetization direction within the ferrimagnetic coating is coherently oriented by applying a high amplitude alternating magnetic field oriented in accordance with the axis of the light beam. This is followed by a progressive reduction of the amplitude of this magnetic field and the magnetic field to be measured is compensated. A system and a measuring cell making it possible to perform said process is also shown.
摘要翻译： 示出了基于通过待测量的磁场的铁磁性涂层的光束的法拉第效应旋转来测量磁场的过程和装置。 通过施加根据光束的轴定向的高振幅交变磁场，铁磁性涂层内的磁化方向被相干取向。 随后逐渐减小该磁场的幅度，并补偿要测量的磁场。 还示出了使得可以执行所述处理的系统和测量单元。
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8.发明授权Device for measuring the flow rate of a fluid and air flow sensor system in an internal combustion engine utilizing such a device 失效用于测量使用这种装置的内燃机中的流体和空气流量传感器系统的流量的装置
公开(公告)号：US4361050A
公开(公告)日：1982-11-30
申请号：US195623
申请日：1980-10-09
申请人： Gerard Coussot , Pierre Hartemann
发明人： Gerard Coussot , Pierre Hartemann
CPC分类号： G01L9/0025 , G01F1/363 , Y10S73/04
摘要： A flowmeter incorporating a pressure differential member creating a differential pressure between an upstream flow path and a downstream flow path of a pipe. The flowmeter has pressure connecting lines located on either side of the pressure differential member and constituted by conduits issuing on the surface of the device. The pressures in the upstream and downstream flow paths are transferred to a differential pressure sensor constituted by two elastic surface wave oscillators supplying signals, whose frequency is proportional to the pressures. The signals are then transmitted to a mixer, whose output supplies a beat signal, whose frequency is equal to the difference of the frequencies of the signal supplied by the oscillators. This frequency difference is directly proportional to the differential pressure.
摘要翻译： 一种流量计，其包括在上游流路和管道的下游流路之间产生压差的压差元件。 流量计具有压力连接线，该压力连接线位于压力差动部件的两侧，并且由在装置表面上发出的导管构成。 上游和下游流动路径中的压力被传递到由两个提供信号的弹性表面波振荡器构成的差压传感器，其频率与压力成正比。 然后将信号传输到混频器，其混频器的输出提供一个频率等于由振荡器提供的信号的频率差的差拍信号。 该频率差与压差成正比。
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公开(公告)号：US4341998A
公开(公告)日：1982-07-27
申请号：US124076
申请日：1980-02-25
申请人： Jean P. Castera , Pierre Hartemann
发明人： Jean P. Castera , Pierre Hartemann
摘要： A unidirectional magnetometer comprising at least two magnetostatic wave oscillators with resonators or delay lines, made in two portions in a magnetic material layer respectively subject to the field to be measured and to given magnetic fields of the same direction, but of opposite sense and adjacent intensities.
摘要翻译： 一种单向磁强计，包括至少两个具有谐振器或延迟线的静磁波振荡器，分别在磁性材料层中分别经受待测场和给定相同方向但具有相反方向和相邻强度的磁场 。
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10.发明授权Process for compensating temperature variations in surface wave devices and pressure transducer utilizing this process 失效利用此过程补偿表面波装置和压力传感器的温度变化的过程
公开(公告)号：US4338575A
公开(公告)日：1982-07-06
申请号：US149244
申请日：1980-05-12
申请人： Pierre Hartemann
发明人： Pierre Hartemann
IPC分类号： G01L1/00 , G01H11/08 , G01L9/00 , G01P15/08 , H03H3/08 , H03H9/25 , H03L1/02 , G01N27/00 , H03B3/04 , H03H9/42
CPC分类号： H03L1/027 , G01L9/0025
摘要： An arrangement for temperature compensating transducers including two elastic surface wave oscillators whose frequencies are mixed to produce an output frequency that is a function of a parameter to be measured such as force, pressure or acceleration. A delay element such as a transmission line having a delay that is a function of temperature is inserted into the loop of at least one of the oscillators to balance oscillator frequency deviations resulting from temperature changes.
摘要翻译： 一种用于温度补偿换能器的装置，包括两个弹性表面波振荡器，其频率被混合以产生作为要测量的参数（诸如力，压力或加速度）的函数的输出频率。 诸如具有作为温度的函数的延迟的传输线的延迟元件被插入到至少一个振荡器的环路中，以平衡由温度变化引起的振荡器频率偏差。
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