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US 11,705,149 B2Granted
Accelerometer inside of a microphone unit
AssigneeWaymo LLC
InventorsChoon Ping Chng, Cheng-Han Wu
Life of this patent
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Abstract
A system includes a microphone unit coupled to a roof of an autonomous vehicle. The microphone unit includes a microphone board having a first opening. The microphone unit also includes a first microphone positioned over the first opening and coupled to the microphone board. The microphone unit further includes an accelerometer. The system also includes a processor coupled to the microphone unit.
Claims16
A system comprising:
- a microphone unit, the microphone unit comprising:
- a microphone board having a first opening, a second opening, and a third opening;
- a first microphone positioned over the first opening and coupled to the microphone board;
- a second microphone positioned over the second opening and coupled to the microphone board;
- a third microphone positioned over the third opening and coupled to the microphone board;
- and
- an accelerometer coupled to the microphone board, wherein the accelerometer comprises:
- a housing having an internal cavity;
- a first electrode positioned atop a bottom surface of the internal cavity of the housing;
- a piezoelectric material positioned atop the first electrode;
- a second electrode positioned atop the piezoelectric material;
- a mass positioned atop the second electrode;
- and
- a spring plate positioned atop the mass;
- and
- a processor coupled to the microphone unit.
13 more elements
A vehicle comprising:
- a microphone unit, the microphone unit comprising:
- a microphone board having a first opening, a second opening, and a third opening;
- a first microphone positioned over the first opening and coupled to the microphone board;
- a second microphone positioned over the second opening and coupled to the microphone board;
- a third microphone positioned over the third opening and coupled to the microphone board;
- and
- an accelerometer coupled to the microphone board, wherein the accelerometer comprises:
- a housing having an internal cavity;
- a first electrode positioned atop a bottom surface of the internal cavity of the housing;
- a piezoelectric material positioned atop the first electrode;
- a second electrode positioned atop the piezoelectric material;
- a mass positioned atop the second electrode;
- and
- a spring plate positioned atop the mass;
- and
- a computing system coupled to the microphone unit, wherein the computing system comprises a processor and a memory.
13 more elements
Dependencies are inferred from the claim text.