edited by: Shaurya Sharma
Last Update: January 23, 2023, 11:12 AM IST
Here are some of the most important sensors used in smartwatches.
Smartwatches use a variety of sensors and hardware, such as GPS, accelerometer, heart rate monitors, microphones, and speakers, to provide an immersive experience.
Smartwatches, with their increasing affordability, have become a staple for many people. These devices go beyond tracking fitness and health by offering a seamless extension of one’s smartphone right on the wrist, as well as being a number of standalone devices.
They use a variety of sensors and hardware such as GPS, accelerometer, heart rate monitors, microphones, and speakers to provide an immersive experience. Some smartwatches also have additional sensors such as a barometer to measure altitude and ambient light sensors to adjust screen brightness.
In this article, we’ll delve into the details of how smartwatches work by examining the functions of some of the most important sensors.
heart rate sensor
A heart rate sensor, also called a photoplethysmogram (PPG) sensor, is a sensor used to detect blood flow through capillaries in the wrist to determine and record the wearer’s pulse rate. Heart rate monitors are used in smartwatches to measure the wearer’s level of fitness and physical activity, as well as to look for any signs of stress or other health problems.
Additionally, it can also be used for sleep tracking and providing other health insights. Smartwatches like the Apple Watch can also use heart rate information to suggest breathing exercises.
accelerometer
The accelerometer in a smartwatch is essential for monitoring the wearer’s movement and activity level. This enables the wristwatch to accurately measure the wearer’s physical activity and fitness by tracking calories burned, steps taken and distance covered. The accelerometer also enables features like Lift to Wake which allows the user to raise their wrist to wake up their wristwatch.
barometer
Like other devices and use cases, the barometer in a smartwatch measures metrics such as air pressure, measures altitude, provides weather changes, and tracks elevation changes during climbing or hiking.
GPS
Global Positioning System or GPS is a system that takes advantage of signals from satellites to pinpoint a device’s location, allowing features such as tracking for runs, cycling and other outdoor activities, as well as location-based services such as turn-by-turn directions. -Turn-by-turn navigation and location-based notifications.
gyroscope
The gyroscope is a sensor that helps the watch track the direction and movement of the wearer, enabling features such as screen rotation and navigation.
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