sensors , sensors and actuators , mems sensors , new era of sensors , smartphone sensors , IR based sensor , Accelerometer , gyroscope sensor basics , world of sensors

1. Sensors in smartphone
Presented by; Presented to;
Kamal Jeet Mr k srinavasa rao
B.tech (ECE) 3rd Dept. of ECE
MUR14O1264

2. Contents
 Overview
 Different sensors in smartphone
 Accelerometer
 Gyroscope
 Proximity sensor
 Common uses of other sensors

3. Overview
 It measure motion, orientation, and various environmental
conditions.
 Attracts the buyer
 Smart work by sensors
 Manufacturers became competitors

4. Different sensors in smartphone

5. Accelerometer
 Capacitive type hardware sensor
 Measures the acceleration force in m/s2 that is applied to a device on all three
physical axes
 Common uses like motion detection (shake, tilt, etc.)

6. Microstructure of Accelerometer

7. Gyroscope
 Measures angular rate using Coriolis effect
 Similar to accelerometer
 Measures a device's rate of rotation in rad/s around each of the three physical
axes (x, y, and z)
 Common uses like rotation detection (spin, turn, etc.)

8. Gyroscope Structure

9. IR based proximity sensor
 Working principle

10.  Obstacle Sensing Circuit or IR Sensor Circuit
 common use phone position during a call

11. Common uses of other sensors
 Ambient light sensors used for Controlling screen brightness.
 The digital compass that's usually based on a sensor called magnetometer
provides mobile phones with a simple orientation in relation to the Earth's
magnetic field.
 As a result, your phone always knows which way is North so it can auto rotate
your digital maps depending on your physical orientation.
 Fingerprint sensor changed the smartphone security

12. References
 https://www.techulator.com/resources/9421-Overview-sensors-used-
smartphones-tablets.aspx
 https://developer.android.com/guide/topics/sensors/sensors_overview.html
 https://www.google.co.in/search?q=different+sensors+in+smartphones&rlz=1C1
CHZL_enIN732IN732&espv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi97
KO48a3TAhUFTrwKHf9RAe4Q_AUIBigB&biw=1366&bih=613
 http://www.instrumentationtoday.com/mems-accelerometer/2011/08/
 http://www.electronicshub.org/ir-sensor/
 http://www.displaymate.com/AutoBrightness_Controls_2.htm