Page 28 - DYNO TTRAINER

Electronic Components

The list of electronic components needed to transcript the data from physical motion
to software interpretable data includes:

1. Rotation Per Minute (RPM) sensor with magnets – 1 piece

The sensor works using an iron cored coil with a magnet attached to one end. When

a piece of ferrous metal is moved towards the end of the sensor, it changes the shape
of the magnetic field in the coil, this changing magnetic field then induces current

to flow in the windings of the coil resulting in a small amount of electricity being

generated. This sensor only detects movement of ferrous objects near the sensor so
is typically used for speed sensing. They are very rugged sensors and are not

affected by dirt and have a very high signal output making them less sensitive to
noise, which is ideal to be applied in an automotive dyno system. It is attached

behind the spinning gears with the magnets, so each time the gear turns a reading is
induced.