Techniques for detecting orientation of a wearable device

A wearable device for detecting an orientation of the wearable device worn by a user, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the user to:
• transmit, using one or more light-emitting components of the wearable device, first light associated with a first wavelength and second light associated with a second wavelength;
• generate a first signal and a second signal based at least in part on the first light and the second light, respectively, received using one or more photodetectors of the wearable device;
• determine an orientation metric associated with the orientation of the wearable device worn by the user based at least in part on a comparison of a first signal strength associated with the first signal and a second signal strength associated with the second signal, and based at least in part on signal strengths associated with light of the first wavelength remaining relatively constant regardless of the orientation of the wearable device, and based at least in part on signal strengths associated with light of the second wavelength changing based at least in part on the orientation of the wearable device;
• and
• acquire physiological data from the user via the wearable device using a set of measurement parameters that are determined based at least in part on the orientation metric.

A wearable device for detecting an orientation of the wearable device worn by a user, comprising:

• means for transmitting, using one or more light-emitting components of the wearable device, first light associated with a first wavelength and second light associated with a second wavelength;
• means for generating a first signal and a second signal based at least in part on the first light and the second light, respectively, received using one or more photodetectors of the wearable device;
• means for determining an orientation metric associated with the orientation of the wearable device worn by the user based at least in part on a comparison of a first signal strength associated with the first signal and a second signal strength associated with the second signal, and based at least in part on signal strengths associated with light of the first wavelength remaining relatively constant regardless of the orientation of the wearable device, and based at least in part on signal strengths associated with light of the second wavelength changing based at least in part on the orientation of the wearable device;
• and
• means for acquiring physiological data from the user via the wearable device using a set of measurement parameters that are determined based at least in part on the orientation metric.