What Sensors Can Be There In A Fitness Tracker And How They Work?

What Sensors Can Be There In A Fitness Tracker And How They Work?

There are various types of fitness band are available in the market at very reasonable prices. Increasing demand of fitness trackers have affected the sales of smartwatches. The reason of increasing popularity of fitness band is their cheap cost, one can easily get a fitness band under 2000 Rs. which is well equipped with advanced features. Below we will discuss the various sensor which a normal fitness band can have and how these sensors work.

1. Accelerometer

Accelerometer - Fitness Tracker And How They Work

In a fitness band the most common and usable sensor is accelerometer. It is used for multiple things, however is often placed to figure count steps. Upon identifying orientation and acceleration force, they’ll verify whether the device is horizontal or vertical, and whether or not it’s moving.

Not all accelerometers are same. Some are more sensitive and accurate than others. The accuracy and capability of accelerometer depends upon the number of axis it has. Number of axis is the count of direction it can measure. A more basic accelerometer can have as low as two axis sensors.

2. Heart rate sensor

Heart rate sensor - Fitness Tracker And How They Work

As the name tells this sensor is used to measure the heart rate of the body. It used some light pulses which are passed through your wrist and upon passing a optical sensor measures the heartbeat.

These optical heart rate sensors may not that accurate that of a heart rate sensor doctors use but it serves the purpose well.

3. GPS (Global Positioning system)

GPS (Global Positioning system) - Fitness Tracker And How They Work

Zeblaze Blitz Smartwatch

GPS is an old technology but the idea of placing them on wearable devices is a new thing. GPS can be used to determine your exact location within a fraction of seconds no matter where you are on this earth.

A typical fitness band consists of a GPS receiver which receives the low power signals from a number of satellite revolving in the orbit. From the different signals received it can determine the exact location of wearer. The GPS technology on fitness wears can enhance the distances travelled data,

4. Light Sensors

Light Sensors - Fitness Tracker And How They Work

Light sensor in a fitness band serves the same purpose as it serves on the mobile phones. The light sensor basically detects the amount of light available in the atmosphere and sends the collected data to the primary processor. Primary processor adjusts the brightness of screen according to the lights in atmosphere. Data collected through this sensor can even be used to determine the current time.

5. UV Sensors

UV Sensors - Fitness Tracker And How They Work

Light sensor is only capable to determine the atmospheric lights around you which are not harmful to you but what about the Ultraviolet radiations which you may be absorbing direct from the sunlight, UV sensor can identify the UV rays and warn you if the value of these rays is beyond the danger limits for you.

6. Temperature sensor (Thermometer)

Temperature sensor (Thermometer) - Fitness Tracker And How They Work

A thermometer placed in a fitness tracker serves the same purpose that of a regular thermometer. It tells you the temperature of your wrist. It can warn you when temperature rises above the limits,