Pressure sensor, microphone, and acoustic processing system
First Claim
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1. A pressure sensor comprising:
- a base body;
a sensor section provided on the base body; and
a processing circuit configured to process a signal obtained from the sensor section,the sensor section including;
a flexible transducing thin film having a film surface;
a first strain sensing element provided on the film surface at a position being different from barycenter of the film surface; and
a second strain sensing element provided on the film surface at a position spaced from the first strain sensing element and being different from the barycenter, andthe processing circuit being configured to output as an output signal at least one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film,whereinthe first strain sensing element is included in a first strain sensing element group in which a plurality of strain sensing elements are connected in series, andthe second strain sensing element is included in a second strain sensing element group in which a plurality of strain sensing elements are connected in series, the second strain sensing element group being different from the first strain sensing element group.
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Abstract
According to one embodiment, a pressure sensor includes: a base body; a sensor section; and a processing circuit. The sensor section includes: a transducing thin film; a first strain sensing element; and a second strain sensing element. The transducing thin film has a film surface and is flexible. The processing circuit is configured to output as an output signal at least one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film.
11 Citations
18 Claims
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1. A pressure sensor comprising:
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a base body; a sensor section provided on the base body; and a processing circuit configured to process a signal obtained from the sensor section, the sensor section including; a flexible transducing thin film having a film surface; a first strain sensing element provided on the film surface at a position being different from barycenter of the film surface; and a second strain sensing element provided on the film surface at a position spaced from the first strain sensing element and being different from the barycenter, and the processing circuit being configured to output as an output signal at least one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film, wherein the first strain sensing element is included in a first strain sensing element group in which a plurality of strain sensing elements are connected in series, and the second strain sensing element is included in a second strain sensing element group in which a plurality of strain sensing elements are connected in series, the second strain sensing element group being different from the first strain sensing element group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A pressure sensor comprising:
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a base body; a sensor section provided on the base body; and a processing circuit configured to process a signal obtained from the sensor section, the sensor section including; a flexible transducing thin film having a film surface; a first strain sensing element provided on the film surface at a position being different from barycenter of the film surface; and a second strain sensing element provided on the film surface at a position spaced from the first strain sensing element and being different from the barycenter, and the processing circuit being configured to output as an output signal at least one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film, wherein the processing circuit outputs the second signal as an output signal when the first signal is larger than a prescribed threshold, and outputs the first signal as an output signal when the first signal is not larger than the prescribed threshold.
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14. A pressure sensor comprising:
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a base body; and a sensor section provided on the base body, the sensor section including; a flexible transducing thin film having a film surface; a first strain sensing element provided on the film surface at a position being different from barycenter of the film surface; and a second strain sensing element provided on the film surface at a position spaced from the first strain sensing element and being different from the barycenter, and the pressure sensor including an electrical wiring configured to output as an output signal only one of a first signal obtained from the first strain sensing element upon application of external pressure to the transducing thin film and a second signal obtained from the second strain sensing element upon application of the external pressure to the transducing thin film, wherein the first strain sensing element is included in a first strain sensing element group in which a plurality of strain sensing elements are connected in series, and the second strain sensing element is included in a second strain sensing element group in which a plurality of strain sensing elements are connected in series, the second strain sensing element group being different from the first strain sensing element group. - View Dependent Claims (15, 16, 17, 18)
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Specification