Positioning a wearable device for data collection

摘要

Wearable devices are described herein including at least two photodetectors and a mount configured to mount the at least two photodetectors to an external surface of a wearer. The at least two photodetectors are configured to detect alignment between the wearable device and a target on or in the body of the wearer (e.g., to detect the location of vasculature within the body of the wearer relative to the at least two photodetectors). Alignment of the at least two photodetectors relative to the target could enable detection of one or more physiological properties of the wearer. For example, the wearable device could include a sensor configured to detect a property of the target when the sensor is above the target, and alignment of the target relative to the at least two photodetectors could include the sensor being located above the target.

主权项

1. A wearable device, comprising:
first and second photodetectors; a mount that can mount the wearable device to an external body surface such that the first and second photodetectors are proximate to a target; a processor; and a non-transitory computer readable medium storing program instructions, wherein the program instructions are executable by the processor to perform operations comprising:
receiving data from the first and second photodetectors; andanalyzing the data to determine whether the target is aligned, wherein the target is aligned when the first and second photodetectors detect substantially equal reflected light intensities from the target.