Optical Sensors

We describe a very sensitive sensor design that can be used to detect abnormal vibrations of machines or parts in industrial machines or even as general purpose alarms by detecting abrupt movement. The different in this design is the sensor system that makes use of a piece of fiber optics which the very sensitive forna. In addition to the practical purposes for its efficiency and simplicity, the circuit also has teaching applications and can be used in electronics, mechatronics and telecommunications courses to serve as an example of applications and operation of optical fibers and also as shield sensor. Small pieces of fiber optics can be obtained with ease from a variety of sources, such as samples from manufacturers, decorative lamps and other places (at one of the electronics fairs in São Paulo, a fiber optic manufacturer distributed a huge quantity of small pieces of optical fibers to visitors and could be used in this assembly). If the reader has a small piece of common optic