Multi-mode sensor for surface orientation
First Claim
1. A wearable device comprising:
- a wearable housing;
first and second light emitters;
first and second light detectors, wherein the first and second light emitters and the first and second light detectors are located within the housing and are each individually and independently controllable, each of the first and second light detectors associated with at least one of a set of emitter-detector pairs,the set of emitter-detector pairs comprising;
a first emitter-detector pair comprising the first light emitter and the first light detector,a second emitter-detector pair comprising the first light emitter and the second light detector, anda third emitter-detector pair comprising the second light emitter and the first light detector pair,wherein the position of the emitter relative to the detector in each emitter-detector pair is predetermined; and
a controller within the housing and in communication with the first and second light emitters and the first and second detectors, wherein the controller is configured to;
select one or more of the set of emitter-detector pairs,activate the light emitter(s) of the one or more of the set emitter-detector pairs,acquire light data from the one or more emitter-detector pairs, anddetermine a relative z-distance and tilt angle of a housing surface to a surface of a user based on the light data from the one of more of the set of emitter-detector pairs.
1 Assignment
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Accused Products
Abstract
The present disclosure relates generally to wearable devices and methods for detecting relative surface orientation. The wearable devices and methods may include a multi-mode sensor comprising emitter-detector combinations (e.g., sets or pairs) that have various spacings between the light emitter and the photodetector. Proximity curves can be generated based upon the various emitter-detector pair spacings, and used to assess surface distance and angular orientation of the wearable device to a body surface of an individual. In some variations, location and/or orientation of the device relative to the body surface is determined based on mapping data acquired by one or more emitter-detector pairs to surface distance (z distance) values based on proximity curve data stored in a memory of a device controller.
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Citations
20 Claims
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1. A wearable device comprising:
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a wearable housing; first and second light emitters; first and second light detectors, wherein the first and second light emitters and the first and second light detectors are located within the housing and are each individually and independently controllable, each of the first and second light detectors associated with at least one of a set of emitter-detector pairs, the set of emitter-detector pairs comprising; a first emitter-detector pair comprising the first light emitter and the first light detector, a second emitter-detector pair comprising the first light emitter and the second light detector, and a third emitter-detector pair comprising the second light emitter and the first light detector pair, wherein the position of the emitter relative to the detector in each emitter-detector pair is predetermined; and a controller within the housing and in communication with the first and second light emitters and the first and second detectors, wherein the controller is configured to; select one or more of the set of emitter-detector pairs, activate the light emitter(s) of the one or more of the set emitter-detector pairs, acquire light data from the one or more emitter-detector pairs, and determine a relative z-distance and tilt angle of a housing surface to a surface of a user based on the light data from the one of more of the set of emitter-detector pairs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for detecting relative surface orientation of a wearable device to a body surface of an individual comprising:
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providing a wearable device, the wearable device comprising; a wearable housing, a first light emitter, a second light emitter, a first light detector, a second light detector, and a controller in communication with the each of the light emitters and light detectors; acquiring proximity data from a first emitter-detector pair, the first emitter-detector pair comprising; the first emitter and the first light detector, wherein acquiring proximity data comprises activating the first light source, measuring light data from the first light detector, and mapping the measured light data to a first separation distance (z distance) using proximity curve data generated for the first emitter-detector pair; acquiring proximity data from a second emitter-detector pair, the second-emitter detector pair comprising; the second emitter and the first light detector, wherein acquiring proximity data comprises activating the second light source, measuring light data from the second light detector, and mapping the measured light data to a second separation distance (z distance) using proximity curve data generated for the second emitter-detector pair; triangulating the proximity data from the first and second emitter-detector pairs to compute a plane that approximates the body surface; and computing a tilt angle of a plane of the housing with respect to the body surface plane. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification