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    ACOUSTIC SENSOR
    1.
    发明公开
    ACOUSTIC SENSOR 有权
    AKUSTISCHER传感器

    公开(公告)号：EP2164280A1

    公开(公告)日：2010-03-17

    申请号：EP08710642.3

    申请日：2008-01-30

    申请人： Omron Corporation

    发明人： KASAI, Takashi ,  WAKAO, Kazutoshi ,  MATSUO, Takeshi ,  ONISHI, Takayoshi ,  TAKAHASHI, Akane

    IPC分类号： H04R19/04 ,  G01H3/00

    CPC分类号： G01H11/06 ,  H04R19/005

    摘要： A vibrating electrode plate 24 that senses a sound pressure faces a counter electrode plate 25 to constitute a capacitance type acoustic sensor. In the counter electrode plate 25, acoustic perforations 31 are opened in order to pass vibration, and plural projections 36 are provided on a surface facing the vibrating electrode plate 24. An interval between the projections 36 is decreased in a region where the vibrating electrode plate 24 has high flexibility to easily generate local sticking with the counter electrode plate 25. The interval between the projections 36 is increased in a region where the vibrating electrode plate 24 has low flexibility to hardly generate local sticking with the counter electrode plate 25. The projections thus arranged prevent firm fixing of the vibrating electrode plate to the counter electrode plate and interruption of vibration of the vibrating electrode plate.

    摘要翻译： 感测声压的振动电极板24面对对电极板25构成电容型声传感器。 在对置电极板25中，声孔31打开以通过振动，并且在面对振动电极板24的表面上设置多个突起36.在振动电极板的区域中，突起36之间的间隔减小 24具有高度的灵活性，容易产生与对电极板25的局部粘附。突起36之间的间隔在振动电极板24具有低柔性的区域中增加，几乎不会产生与对电极板25的局部粘附。 从而防止振动电极板牢固地固定在对电极板上，并阻止振动电极板的振动。