发明名称 |
Sound generating apparatus, a sound detection apparatus, an acoustic sensor, and an acoustic living body measuring apparatus |
摘要 |
A sound generating apparatus or a sound detecting apparatus includes: a flexible substrate; and a plurality of bimorphs arranged on a surface of the flexible substrate in a direction at a predetermined interval, each of the bimorphs having input/output terminals. Each of the bimorphs has a rectangular shape and its longitudinal direction is perpendicular to the direction. The flexible substrate has a slit between successive two of the bimorphs. A width of the slit outside the bimorphs is wide. A buffering material covering surfaces of the flexible substrate with the bimorphs exposed or a cover covering the bimorphs with a space may be provided. The cover and the buffering material may have slit. A sound generating apparatus including a plurality of flexible substrates respectively supporting bimorphs may be provided. The flexible substrate may have a comb shape. An acoustic sensor includes the sound generating apparatus, the sound detection apparatus connected therebetween by a flexible substrate, wherein the flexible substrate may include a cable and a connector. A living body measuring apparatus includes the acoustic sensor, wherein phase shift between the sound signal induced by the bimorph and a reference drive signal is detected and a blood pressure is operated by the phase shift amount.
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申请公布号 |
US6275447(B1) |
申请公布日期 |
2001.08.14 |
申请号 |
US19990247561 |
申请日期 |
1999.02.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUKUKITA HIROSHI;HAGIWARA HISASHI |
分类号 |
G01N29/00;A61B5/022;A61B8/00;A61B8/04;G01H11/08;G03B42/06;(IPC1-7):G03B42/06 |
主分类号 |
G01N29/00 |
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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