Over the last few years, triumphant gadgets across the globe SmartWatch, tablet-computer accessories, smartwatch, smart-glass, smart-shoe products are gradually adding to the list of mainstream technology products. Even in the current market smart-jewelery is also found. But by saying that these wearable gadgets are the most used product fitness band or fitness tracker! Regardless of whether the health is conscious or just for fashion, in addition to Apple, Microsoft, Samsung, Hawaii, to build fitness bands, the world's largest technology companies are increasingly understood that their demand is increasing day by day to almost all people around the world. But do users know, how does fitness bands or fitness tracker work? How does the user walk each step, measure the amount of sleep, heart rate? How does the temperature of the body measure the difference between the temperature of the environment and recommend the appropriate temperature to the user? How do you know about almost all types of activities and help the user with health message? The whole article today is the answer to these questions!
First let's start by talking about what is a functional part of a band that looks like a bracelet or watch.
A fitness band is rich in five layers. Sensing Layer, Mac Layer, Network Layer, Processing and Storage Layer and Service Layer. Let's talk about a little more detail about the layers!
Sensing Layer: This layer is largely rich in sensors, which work with walk-through activities, heart rate, temperature data, Wide Area Network (WAN); For example, to deliver information to the server through GSM, GPRS or LTE.
Mac Layer: This layer is mainly employed in monitoring, controlling, quality of service and power management.
Network Layer: This layer transmits information through routing, addressing to other devices from the main band through IPV6.
Processing and Storage Layer: This layer also performs the task of protecting the database with the data database analyzed from the sensing layer.
Service Layer: This layer provides various mobile applications to analyze data processed through analysis.
Although the fitness structure of each fitness band is the same, the differentiation of the sensing layer separates one from the other. However, the sensors used on one device are different from the sensors used on other devices, but they are the same, the way they work is the same. Let's now know how to collect information about the sensors.
Accelerometer
The most basic and common sensor of Fitness Band is the Accelerometer. Although it is used for various purposes, it works as a tracker on Fitbonds. It is usually used to measure the user's walking step. Acceleration, vibration, orientation; That is, depending on whether the device is vertically or horizontally, it can determine the position of the user, the speed.
Different types of accelerometer are used in the devices. There is a different, stronger, sensitive and differentiating between them. Typically two-axis is used in accelerometer sensor devices. Three-sided sensors may be positioned in three-dimensional position. To improve the accuracy of fitness trackers, companies are using day-to-day optimally and more efficient accelerometer sensor in Fitbands.
GPS
Currently GPS or global positioning system is used in almost daily work. The use of this technology is unique in order to find out the position and direction of any person, including objects. Although the usage of GPS in Fitbands is not fully started, its use is increasing day by day. This technique is better than normal acesselrometer sensor technology to measure sports and physical activity like walking, running, cycling and more accurately. Moreover, users easily help GPS to identify their location, which is quite important in mountain running, cycling, biking, trekking and hiking.
Galvanic Skin Response (GSR) Sensor
GSR sensors mainly measure the electrical connections of the skin. When the body is sweating due to internal or external force application, excessive physical activity, or tension, the skin becomes more conductive than the initial conditions. And the sensor in the fitness band measures the same and helps in determining the quantity and intensity of physical exposure to fitbands in combination with the information collected by other sensors, so that users can easily report the disturbances they have encountered. In the future, technology experts believe that stress, phobia, post-trauma stress disorder, will help the anxious patients. The GSR sensor will play an important role especially in IoT-rich medical applications.
Optical Heart Rate Monitor (OHRM)
Fitness bands use a method called photoplethysmography to measure heart rate. Simply put, photomethalmography is a type of optical method, to detect changes in volume of blood peripheral
