Introduction to Various Types of Sensors


Before working with sensors on any project, we must know its usage, advantages, limitations and characteristics. There are various parameters on which a sensor is chosen for any particular application like cost, size, weight, resolution, sensitivity, etc. In this article and the presentation given below, we would be going through sensors in details along with various sensor types available in the market like:

Position Sensor: It is a type of sensor that can detect the object movements and converts them into signals suitable for processing, transmission, or control.

PotentiometersPotentiometric sensors are used to measure the electrical potential of an electrode while no current is flowing through it. They are a type of chemical sensor.

Encoders: An encoder is a simple device that can output a digital signal for each small portion of a movement.

Displacement Sensor: A displacement sensor (displacement gauge) is a sensor used to measure the distance between a reference position and a specific object.

Velocity Sensor: A velocity or speed sensor measures consecutive position measurements at known intervals and computes the time rate of change in the position values.

TachometersA tachometer is an instrument that measures the rotational speed of a shaft or disk in a motor or other machine.

Acceleration Sensor: An accelerometer is an electromechanical device that measures acceleration forces.

The forces may be static or dynamic. If you have the amount of static acceleration due to gravity, you can find out the angle the device is tilted at with respect to the earth’s surface. If you have the amount of dynamic acceleration, you can analyse the way the device is moving.

Force and Pressure Sensor: A pressure sensor is a device that senses pressure & converts it into an electric signal with respect to the pressure applied.

Torque Sensor: A Torque Sensor, is a transducer that converts a torsional mechanical input into an electrical output signal.

Touch and Tactile Sensor: Touch and tactile sensor are devices which measures the parameters of a contact between the sensor and an object. This interaction obtained is confined to a small defined region.

Proximity Sensor: A proximity sensor is a sensor which is able to detect nearby objects with the help of emitting electromagnetic field or a beam of electromagnetic radiations without any physical contact.



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