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公开(公告)号：US3651353A
公开(公告)日：1972-03-21
申请号：US3651353D
申请日：1969-10-13
Applicant: SUNDSTRAND DATA CONTROL
Inventor： HUGLI HANS W , SIEGEL VERNON H
Abstract: Disclosed is a microphone in the form of a piezoelectric pressure transducer for detecting high intensity noise. The microphone incorporates a lightweight endpiece, preferably of beryllium metal, having a cavity for receiving an acceleration compensation weight. A preloading sleeve is attached at one end to a support while its other end is slipped over a portion of the endpiece and secured by a retaining ring. The microphone is provided with a separate compartment for housing an electric circuit receiving the output from the preloaded quartz crystals of the transducer.
Abstract translation: 公开了一种用于检测高强度噪声的压电式压力传感器形式的麦克风。 该麦克风包括轻质的端部件，优选地为铍金属，具有用于接收加速度补偿重量的空腔。 预加载套筒的一端连接到支撑件上，而另一端滑动在一端的一部分上并通过固定环固定。 麦克风设置有独立的隔间，用于容纳接收来自换能器的预加载的石英晶体的输出的电路。
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公开(公告)号：US3673443A
公开(公告)日：1972-06-27
申请号：US3673443D
申请日：1970-12-31
Applicant: SUNDSTRAND DATA CONTROL
Inventor： SIEGEL VERNON H
Abstract: Disclosed is a piezoelectric pressure transducer particularly suited for use with an engine gauge for measuring pressures in internal combustion engines or for sensing pressure in other severe temperature environments. A thin, flat diaphragm is protected by a ceramic shield and other elements of the gauge are made of material having a low thermal expansion such as invar. Access to the diaphragm is by way of a small annular, stepped groove to cool the gases acting on the diaphragm. A piezoelectric element such as quartz having two sensitive axes is employed and long term temperature effects are nullified by applying compensating stresses to the second axis of the piezoelectric element.
Abstract translation: 公开了一种特别适用于用于测量内燃机中的压力或用于感测其它恶劣温度环境中的压力的发动机规格的压电式压力传感器。 薄的平坦隔膜由陶瓷屏蔽保护，仪表的其他元件由具有低热膨胀的材料制成，例如不透明的。 进入隔膜是通过一个小的环形阶梯槽来冷却作用在隔膜上的气体。 采用具有两个敏感轴的石英等压电元件，通过对压电元件的第二轴施加补偿应力，长期的温度效应无效。
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