公开(公告)号：US4680970A

公开(公告)日：1987-07-21

申请号：US825082

申请日：1986-01-31

申请人： Toshitsugu Ueda ,  Fusao Kohsaka ,  Daisuke Yamazaki ,  Hideo Akazawa

发明人： Toshitsugu Ueda ,  Fusao Kohsaka ,  Daisuke Yamazaki ,  Hideo Akazawa

IPC分类号： G01L9/00 ,  G01L11/00

CPC分类号： G01L9/0022 ,  G01L9/0016 ,  G01L9/0033

摘要： A pressure measuring apparatus comprising a diaphragm to which pressure to be measured is applied and a resilient vibrator connected to the diaphragm, which acts to produce a signal based on its natural frequency relative to the pressure, wherein the diaphragm comprises a peripheral circumferential portion, a central fixing portion and a non-planar intermediate portion therebetween, with the central portion being connected to the vibrator and having its edge disposed at a non-perpendicular angle with respect to the vibrator area to which it is connected. The apparatus eliminates adverse influences due to initial distortion, hysteresis of the diaphragm and produces accurate measurements.

摘要翻译： 一种压力测量装置，包括施加有被测量压力的膜片和连接到所述膜片的弹性振动器，所述弹性振动器基于其相对于所述压力的固有频率产生信号，其中所述隔膜包括周向周向部分， 中央固定部分和其间的非平面中间部分，其中心部分连接到振动器并且其边缘相对于其连接的振动器区域以非垂直的角度设置。 该装置消除了由于初始失真，隔膜滞后等引起的不利影响，并产生了精确的测量。