公开(公告)号：US5602327A

公开(公告)日：1997-02-11

申请号：US524085

申请日：1995-09-06

申请人： Yukio Torizuka ,  Hiroshi Uno ,  Kouji Kitazume

发明人： Yukio Torizuka ,  Hiroshi Uno ,  Kouji Kitazume

IPC分类号： G01M3/24 ,  H04R17/00

CPC分类号： H04R17/00 ,  G01M3/243

摘要： A leakage-sound detecting apparatus is provided for efficiently detecting water leakage in a plastic pipe by increasing sensitivity to a low frequency sound component and efficiently reducing stray noise, as well as protecting a piezoelectric element. To this end a detection portion and a pedestal portion are connected through a mechanical resonant member formed of a soft material. A low frequency sound component is amplified by the resonant member, and high frequency components are substantially attenuated. In an alternative arrangement a detection portion and a mechanical resonant member mounted on a pedestal portion are connected through a buffer portion having a buffer member arranged therein. When a shock is applied to the bottom of the pedestal portion, due to the apparatus being dropped for example, the buffer member is compressed, and no overload is applied to a piezoelectric element.

摘要翻译： 提供了一种泄漏检测装置，用于通过增加对低频声音分量的灵敏度并有效地降低杂散噪声以及保护压电元件来有效地检测塑料管中的漏水。 为此，检测部分和基座部分通过由柔软材料形成的机械共振部件连接。 低频声音成分被谐振元件放大，高频分量基本衰减。 在替代方案中，安装在基座部分上的检测部分和机械共振部件通过其中布置有缓冲部件的缓冲部分连接。 当冲击施加到基座部分的底部时，由于例如设备被丢弃，缓冲构件被压缩，并且不会对压电元件施加过载。