Different type sensor

 Different type sensor

What is a sensor?

 A sensor is a device that detects and responds to some type of input from the physical environment. The input can be light, heat, motion, moisture, pressure or any number of other environmental phenomena.

1.ULTRASONIC SENSOR

An electronic instrument that uses ultrasonic sound waves (through air) to measure the distance of the target object and the reflected sound is converted into electrical signal.

Most ultrasonic sensors are based on the principle of measuring the propagation time of sound between send and receive (proximity sensor). The barrier principle determines the distance from the sensor to the reflector (retro-reflective sensor) or to an object (through-beam sensor) in the measuring range.

2.GAS SENSOR

What is the gas sensor?

Gas sensors are devices that help us understand the amount of gas in the environment and the natural state of its movement. Gas sensors reveal the amount of gas in the environment and the nature of the gas composition with electrical signals and can provide its change [91–93].

Which sensor is used for gases?

Catalytic Diffusion Sensor

Catalytic diffusion sensors are the most widely used devices for the detection of combustible gases and vapors. These sensors start with wire being wound into coils. These coils are then doped with two types of catalysts: one to make the element active and one to make it blind.

What is the basic principle of gas sensors?

Abstract. Gas sensors work on the principle of transforming the gas adsorption effects on the surface of the active material into a detectable signal in terms of its changed electrical, optical, thermal, mechanical, magnetic (magnetization and spin), and piezoelectric properties

3.COLOUR SENSOR

What is a color sensor? 

Among sensors that detect light, those that detect the three primary colors of red, green, and blue are called color sensors. Color sensors detect RGB values by receiving ambient light using a photodiode.

4.PIR SENSOR

A PIR sensor is an electronic sensor used in motion detectors such as automatically triggered lighting devices and protection systems that measure devices emitting infrared light in their field of view. Each body with a temperature above zero releases heat energy, which is in the form of radiation

What is the full form of PIR?

PIR (passive infrared) sensors utilise the detection of infrared that is radiated from all objects that emit heat. This type of emission is not visible to the human eye, but sensors that operate using infrared wavelengths can detect such activity.

5.Accelerometer

What is accelerometer sensor?Accelerometer sensors are ICs that measure acceleration, which is the change in speed (velocity) per unit time. Measuring acceleration makes it possible to obtain information such as object inclination and vibration.

An accelerometer sensor is a tool that measures the acceleration of any body or object in its instantaneous rest frame. It is not a coordinate acceleration. Accelerometer sensors are used in many ways, such as in many electronic devices, smartphones, and wearable devices, etc.

Is an accelerometer a speed sensor?

Explanation of meaning and definition. Accelerometer sensors are inertial sensors that measures the change in velocity (acceleration) of an object over time. They are used in a variety of applications, including automobiles, smartphones, aircraft, industrial robots, and wearable devices.