How does a fitness tracker like the Kronaby A1000-0669 work?
Fitness Tracker and wristbands are small marvels of technology; they can capture a wide range of measurement data and also draw the right conclusions from it, e.g. distinguishing whether the recorded movements belong to a sporting activity or simply to lifting the coffee cup in the office. To understand how this works, let’s take a look at how such fitness trackers function.
What all fitness trackers have in common is the detection of movement with the help of different motion sensors. The sensors found in almost every tracker are, on the one hand, the accelerometer and, on the other hand, a gyroscope sensor.
Acceleration measurement in a fitness tracker
The term acceleration describes the change in motion of an object. Acceleration always occurs when any object either changes its direction or changes its speed. If an object is accelerated (the object constantly changes the state of its motion by becoming slower or faster or changing direction), then a force definitely acts on it. This force can be measured in different ways.
Optical sensors
The optical sensors in fitness trackers are mainly used to measure pulse. As a rule, these are located on the inside of the wristbands. By receiving and emitting different light impulses, the amount of blood beneath the skin can be determined. The heart rate can then be derived from this amount.
GPS receiver
Using a GPS receiver allows the fitness tracker to record the exact location of the device, and thus the user, to within a few meters. If the data is collected over time, the total distance, time required, and therefore also the speed can be determined. While a GPS receiver can now be found in almost all smartphones, this technology is only now making its way into fitness trackers.
The Kronaby A1000-0669 can also, in addition to the normal functions of hour, minute, date and time zones, receive and display notifications. It has a movement reminder, step goal and pedometer, a timer and remote camera control, can answer and reject calls, find the phone and control the music. A whole range of functions, all operated via the crown and the two other push buttons, so that the dial looks like that of a completely normal wristwatch.
