[image credit: Google]
1. Proximity Sensor.
A proximity sensor is a sensor that can detect the presence of nearby objects without any physical contact. A proximity sensor often emits a beam of the electromagnetic field or electromagnetic radiation and detects changes in the field or the return signal.
2. Ambient Light Sensor.
The ambient light sensor is a type of component used in mobile devices, smartphones, notebooks, LCD TVs, and automotive displays. The ‘Principle of Ambient Light Sensors’ is a photodetector used to detect the sum of ambient light and reduce the brightness of a mobile screen.
3. CMOS Image Sensor.
In a complementary metal-oxide-semiconductor CMOS sensor, the charge on the photosensitive pixel is converted to the voltage at the pixel site and the chip in the signal row and column multiplex is converted to a digital-to-analog converter. Built into its design, CMOS is a digital device.
4. GPS Sensor.
The Global Positioning System is a network of about thirty satellites, orbiting the earth at an altitude of about 20,000 km. ... These signals traveling at the speed of light are intercepted by your GPS receiver, calculating how far each satellite is based on how long it takes for the message to arrive.
5. Accelerometer.
Some accelerometers use piezoelectric effects - they have microscopic crystal structures that are stretched by accelerating forces, creating a voltage.
6. Humidity Sensor.
A humidity sensor measures and reports both sensation, humidity, and air temperature. ... Relative humidity becomes an important factor in finding comfort. Humidity sensors work by detecting changes in the electrical current or temperature in the air.
7. Temperature Sensor.
A temperature sensor is a device that requires a thermocouple or RTD to measure temperature by electrical signals. ... If the voltage difference is increased, the analog signal is generated by the device and it is directly proportional to the temperature.
8. Pressure Sensor.
The pressure sensor works by converting pressure into analog electrical signals. Demand for this specialty has grown significantly as a result of recent corporate scandals. ... Nowadays we measure pressure electronically using pressure transducers and pressure switches.
9. Fingerprint Sensor.
The process of making an optical scanner works by throwing a bright light on your fingerprint and taking digital photos. The pale-sensitive microchip sees the ups and downs of digital fingerprints, converts them into digital images in the 1st and 0th decades, and creates the user's code.
10. Magnetometer.
A magnetometer is a device that measures magnetism - the relative change of direction, force, or magnetic field in a particular place. ... A compass is a device that measures the direction of an ambient magnetic field
11. Gyroscope.
A gyroscope is a device that has a rotating disc or wheel attached to the bottom so that it can move in one or more directions regardless of the movement of the foot. However, the response to external torque and orientation in different directions varies.
12. Touch Sensor.
The touch sensor works like a simple switch. When in contact with the surface of the touch sensor, the circuit inside the sensor closes. The measurement circuit detects the change in capacitance and converts it into a trigger signal.
