Resistive sensors


The sensors presented in this chapter are all based on resistive effects: they behave as an electrical resistor whose resistance is affected by a particular physical quantity. Quantities that can be measured using resistive effects are temperature (thermistors and metal thermometers), light (light-dependent resistor), deformation (piezoresistors), and magnetic field strength (magnetoresistors). By a special construction or material choice, resistors can be made useful for sensing other quantities, for instance force, torque, pressure, distance, angle, velocity, and acceleration.

After a brief discussion on resistance and resistivity this chapter treats successively potentiometric sensors, strain gauges, and piezoresistive ...

Get Sensors for Mechatronics, 2nd Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.