Variety recognize Sensor in Android Smartphone

Tuesday, April 28, 2015

Nowadays more and more technology embedded in Android-based devices. But not a few of the users who are not informed about the function of the technology embedded on the devices they use. One of them is the sensor technology. In general, the sensors in Android is divided into three categories, namely motion, environmental, and position. From each of these categories is further divided into several types of sensors that are tailored to its designation. More and more embedded sensor technology, the more expensive the price of these devices.

No wonder if the premium class smartphone includes a sensor which is more complete than the entry-level class. In fact there are several sensors that exist only on a premium smartphone. For example, the sensor Fingerprint or Face Detector. This type of sensor itself always continue to grow in line with technological developments. For more details, the following list of the most common sensors in Android-based devices and their functions and uses.

Category Motion Sensor:

Accelerometer
Sensors are always there in every Android platform is used to measure the acceleration or detect and measure vibration and movement. These sensors are usually applied to detect the movement of such a shake or tilt. The most common use of this type of sensor is when the display automatically changes from portrait mode to landscape mode. Or when playing the game of racing which means driving with the tilt position of the device (tilt).

Gyroscope
Similar to the accelerometer, the sensor serves to detect the rotation of a device or move up, down, left, right, forward, backward. If the accelerometer is affected by gravity, the gyroscope is not affected by gravity, therefore it produces more subtle movements than Accelerometer. These sensors are commonly used for games like Temple Run.

Gravity
Sensors associated with the gravitational force that is applied to the device on three physical axes (x, y, z). The sensor works in the direction of gravity of the device used vertically and horizontally. An example used in the racing game control by tilting the screen. Similar to the accelerometer, but these sensors are only used to detect the position only, and not by gravity.

Environmental Category Sensors:

Ambient Light
Sensors are used to detect ambient light and adjust the brightness so that the user can see the display more clearly. Adjustments can be set automatically, this can reduce eye strain so it is more comfortable and not get tired. Besides this sensor is also used by the camera based applications to allow users to not bother adjusting the brightness.

Ambient Temperature
This sensor is used to measure the ambient room temperature in degrees Celsius but can also be converted to degrees Fahrenheit. Other uses are able to calculate the pressure of the wind, the air, as well as weather conditions. Not many Android devices that have this sensor. Some of them are using it that Nexus series smartphone, the Galaxy S3 and S4, and others.

Barometer
Its usefulness is as a sensor that can measure the pressure atmofir. The sensor is embedded in most high-end phones that serve to measure how high above the sea level phones and improve the accuracy of GPS.

Category Position Sensor: 

Magnetic Field
Many applications or compass directions available in the Play Store. These applications take advantage of the Magnetic Field sensor capable of detecting a magnetic field around the smartphone. Not only that, other applications such as metal detectors to detect ghosts applications utilize this sensor to detect electromagnetic waves that were around smartphone.

Proximity
When the smartphone affixed to the ear when making or receiving phone calls, the screen will automatically die so that the touch sensor becomes inactive. This is one of the functions of the phone Proximity sensor so that the activities are not disrupted by unintended touches. This sensor also makes battery consumption becomes more efficient. For additional information, the first smartphone to use this sensor is the iPhone.

Global Positioning System (GPS)
Arguably been many who know the function of the GPS sensor. These sensors are useful for determining the position of the user of trigonometric calculation results based on the signals from the closest satellites were successfully received by the smartphone. By activating it, the smartphone can track the whereabouts of the user or others, and is used as a navigation system that will guide the user to see or show a location.