发明名称 |
Leakage-sound detecting apparatus |
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.
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申请公布号 |
US5602327(A) |
申请公布日期 |
1997.02.11 |
申请号 |
US19950524085 |
申请日期 |
1995.09.06 |
申请人 |
FUJI TECOM, INC. |
发明人 |
TORIZUKA, YUKIO;UNO, HIROSHI;KITAZUME, KOUJI |
分类号 |
G01M3/24;H04R17/00;(IPC1-7):G01M3/24 |
主分类号 |
G01M3/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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