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US 10,659,888 B2Granted
Sensor output device, sound output device, and musical instrument
AssigneeYamaha Corporation
InventorsSusumu Ishibashi, Masao Noro, Yohei Ohtani, Tomonobu Sugimoto
Life of this patent
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Abstract
A sensor output device includes a sensor and an output circuit. The sensor includes a piezoelectric element and an output terminal. The piezoelectric element includes porous resin. The output circuit is connected to the output terminal of the sensor and includes a thermistor.
Claims14
A sensor output device comprising:
- a sensor comprising an output terminal and a piezoelectric element that comprises an electretized film containing porous resin, a sensitivity of the sensor exhibiting a linear temperature dependence within a predetermined temperature range;
- and
- an output circuit connected to the output terminal of the sensor and comprising:
- a first resistor connected to the output terminal of the sensor;
- a thermistor connected to the first resistor and to ground;
- and
- a second resistor connected to the first resistor and to the thermistor.
4 more elements
A sensor output device comprising:
- a sensor comprising an output terminal and a piezoelectric element that comprises an electretized film containing porous resin, a sensitivity of the sensor exhibiting a linear temperature dependence within a predetermined temperature range;
- and
- an output circuit connected to the output terminal of the sensor, and comprising:
- a thermistor;
- an operational amplifier;
- and
- a feedback circuit comprising the thermistor connected to the operational amplifier.
4 more elements
A musical instrument comprising:
- a musical instrument body;
- and
- a first sensor output device comprising:
- a first sensor comprising an output terminal and a piezoelectric element that comprises an electretized film that comprises porous resin, a sensitivity of the first sensor exhibiting a linear temperature dependence within a predetermined temperature range;
- and
- a first output circuit connected to the output terminal of the first sensor and comprising:
- a first resistor connected to the output terminal of the first sensor;
- a thermistor connected to the first resistor and to ground;
- and
- a second resistor connected to the first resistor and to the thermistor.
7 more elements
Dependencies are inferred from the claim text.