公开(公告)号：US08104336B2

公开(公告)日：2012-01-31

申请号：US12394853

申请日：2009-02-27

Applicant: Ippei Torigoe ,  Takashi Segami ,  Munehiro Date

Inventor： Ippei Torigoe ,  Takashi Segami ,  Munehiro Date

IPC: G01F17/00

CPC classification number: G01F17/00

Abstract: An acoustic capacity measurement method for finding capacity of a container or object by removing effect of the surface area without using an approximate expression of acoustic impedance is provided. The acoustic capacity measurement method for finding capacity of a container includes a pressure change ratio calculating step, a rotation step, an oblique coordinate transformation step, and a capacity calculating step.

Abstract translation: 提供了一种用于通过消除表面积的影响而不使用声阻抗的近似表达来发现容器或物体的容量的声学能力测量方法。 用于发现容器容量的声容测量方法包括压力变化率计算步骤，旋转步骤，倾斜坐标变换步骤和容量计算步骤。

公开(公告)号：US20090217749A1

公开(公告)日：2009-09-03

申请号：US12394853

申请日：2009-02-27

Applicant: Ippei Torigoe ,  Takashi Segami ,  Munehiro Date

Inventor： Ippei Torigoe ,  Takashi Segami ,  Munehiro Date

IPC: G01F17/00

CPC classification number: G01F17/00

Abstract: The present invention provides an acoustic capacity measurement method for finding capacity of a container or object by removing effect of the surface area without using an approximate expression of acoustic impedance.The acoustic capacity measurement method for finding capacity of a container under test based on a ratio of pressure changes produced in a reference vessel and the container under test by giving equal alternating capacity changes to the reference vessel and the container under test includes a pressure change ratio calculating step of calculating a ratio between measured values of pressure changes in the reference vessel and the container under test; a rotation step of calculating an acoustic admittance component of the container under test by rotating the calculated pressure change ratio by an angle of θ so that the pressure change ratio will vary at a slope of 1 with respect to changes in a surface area in a complex plane; an oblique coordinate transformation step of transforming the calculated acoustic admittance component into an oblique coordinate system whose axes are given by an imaginary axis and a straight line with a slope of 1; and a capacity calculating step of calculating the capacity of the container under test by multiplying values in a direction of the imaginary axis of the acoustic admittance component transformed into oblique coordinates by a predetermined real number.

Abstract translation: 本发明提供一种用于通过去除表面积的影响而不使用声阻抗的近似表达来找出容器或物体的容量的声学能力测量方法。 用于根据通过对参考容器和被测试容器施加相等的交变容量变化，在参考容器和被测容器中产生的压力变化的比率来测量被测容器的容量的声学能力测量方法包括压力变化率 计算参考容器和被测容器的压力变化的测量值之间的比率的计算步骤; 旋转步骤，通过将计算出的压力变化率转动θ角来计算被测容器的声导纳分量，使得压力变化率相对于复合物中的表面积的变化以斜率1变化 飞机 将计算出的声导纳分量变换为倾斜坐标系的倾斜坐标变换步骤，该倾斜坐标系的轴由虚轴和斜率为1的直线给出; 以及容量计算步骤，通过将转换成倾斜坐标的声导纳分量的虚轴方向的值乘以预定的实数来计算被测容器的容量。