INTRODUCTION
We people all over the world are very much into the usage of smart watches in our daily life because of its aesthetic look and its functions. But we might have not analyzed about its features behind its working. Stay ahead of the technology curve and get to know all about smart watches! This comprehensive guide will let you know what features and specs you should look for in a smart watch.
WHAT IS SMART WATCH ?
Smart watch is a watch with digital display that can be connected with your mobile phones to manage calls and messages you get in your mobiles. It can also detect your various activities including the following
1. Health activity
a. Heart rate
b. Sleep
c. Blood oxygen
d. Breathe
2. Sports/Exercise activity
a. Running
b. Walking
c. Cycling
d. Hiking
e. Climbing
f. Treadmill
g. Spinning
h. Yoga
i. Fitness
3. Weather
4. Direction and speed
HOW THIS WORKS?
Bluetooth connectivity is the wireless technical tool in linking your mobile calls and messages to your smart watch. Bluetooth is a connecting link between two electronic devices located within a distance of about 10m to 100m apart working based on Personal Area Network. By means of Bluetooth, the watch is connected with a mobile application (eg: dafit app, noisefit app, BT notifier, Fit pro etc.) that enables the watch to access various others applications on your mobiles like managing your calls, messages, gmaps etc. and sensors are the technical tool in tracking your basic health parameters in this tiny device. There are various sensors to detect your health parameters. The following are few sensors.
1. GYROSCOPE
This is a type of sensor that detects your movement based on your angular velocity (i.e) Your angular movement with respect to time from a particular central point. This gyroscope function by combining itself with other sensors present inside your smart watch to detect whether you are running, walking or just shaking your wrist.
2. ELECTRO DERMAL ACTIVITY SENSOR
The conductivity produced in the skin due to increased activity of sweat glands is detected by this electrodermal activity sensors. Sweat secreted by eccrine glands due to exogeneous stimuli like weather and endogenous stimuli like memory, fear, anxiety etc detects your heartrate along with stress.
3. ULTRAVIOLET SENSOR
This detects the amount of UV rays to which the device is exposed and tells you the amount of UV and other harmful rays the person wearing this watch is exposed to.
4. GESTURE SENSOR
Gesture sensor helps in detecting the movement of your wrist and instructs the watch to perform based on the movements you have produced. For example: When you rotate your wrist the stop watch gets turned on and when you shake your wrist it automatically disconnects the call.
5. SKIN TEMPERATURE SENSOR
Non contact temperature detection by means of Infrared temperature sensors. This helps in detecting your body temperature and helps you know whether you are about to fall sick.
6. ECG SENSOR
ECG sensor detects your heart beat based on the electric impulse your heart sends when it pumps each time and the sensor by means of this electric impulse analyses your heart beat rate.
7. ACCELEROMETER
Accelerometer helps in detecting the pace steps you have walked and shows the total number of steps while you walk the entire day. It can even monitor your sleep. Smart watch is provided with a three axis accelerometer which can detect forward movement, backward movement and also it can sense earth's gravity so that it can analyse your position and rate of acceleration.
8. OXIMETRY SENSOR
Pulse oximetry sensor with the help of red and infrared LEDs measures deoxygenated and oxygenated hemoglobin. It is used to know one's oxygen saturation level (SpO2) and pulse rate. Infrared lights are more absorbed by oxygenated blood and hence it allows more red light to pass through whereas more red light is absorbed by deoxygenated blood and hence allows more infrared rays to pass through. Thereby detecting the level of oxygen in blood.
9. BAROMETRIC PRESSURE SENSOR
Aneroid cell present inside the barometric pressure sensor, expands and contracts based on the atmospheric pressure in the surrounding environment. Hence detecting your climbing, altitude in which you are present and also the atmospheric pressure.
10. PROXIMITY SENSOR
This helps the smart watch to know that you are nearby and wants to use it hence it lights up the display when you turn your wrist against your face which is an amazing battery saving technology.
11.MAGNETOMETER
Magnetometer is nothing but a technical term to describe magnetic compass sensor which helps in detecting the direction. This sensor helps in successful running of map applications.
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