Sensor for measuring acceleration and sound pressure
AssigneeVtt
InventorsKari Kirjavainen, Jukka Lekkala, Hannu Nyk{umlaut over (a)}nen, Seppo Uosukainen
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Abstract
The invention relates to a sensor for measuring acceleration and sound pressure, the sensor comprising a first pressure sensitive film (2) for measuring pressure (P) and second pressure sensitive film (5) having a mass (6) disposed thereon for measuring acceleration (A). The films are arranged concentrically in the same plane, so that pressure and acceleration are measured at the same point, thereby avoiding a phase difference between the two measurements.
Claims6
A sensor for measuring acceleration and sound pressure, the sensor separately comprising means for measuring the acceleration of a surface and means for measuring the sound pressure affecting the surface, wherein the means for measuring the acceleration and the means for measuring the sound pressure are arranged substantially concentrically and substantially in the same plane.
Dependencies are inferred from the claim text.