This disclosure describes techniques for detection of the breathing state of a user. Per techniques of this disclosure, nasal cannula based temperature measurements from a wearable device worn by a user are utilized to detect a breathing state of the user. The nasal cannula includes a temperature sensor that measures temperature of the air in the nostril. The temperature is converted to a breathing rate level which is analyzed to determine the breathing state of the user. Regions of low slope are indicative of the user holding their breath. A positive slope region in a breathing rate line is indicative of exhalation while a negative slope region in the breathing rate line is indicative of inhalation. The breathing frequency is indicative of the nature of breathing. Breathing state detection based on nasal cannula based measurements is relatively accurate and has relatively small latency, thereby making the technology attractive for many applications.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.