ELI5: Explain Like I'm 5

LVDT

An LVDT (Linear Variable Differential Transformer) is a special kind of sensor that helps us measure how much something moves. Imagine you have a toy car that can move back and forth on a track. If you want to know exactly how far the car has moved, you can use an LVDT to measure it.

An LVDT has three parts: a primary coil, a secondary coil, and a movable core. The primary coil creates a magnetic field that surrounds the movable core. The secondary coils are located on either side of the primary coil. When the movable core moves, it changes the magnetic field around it. This change in the magnetic field causes a voltage (a kind of electrical signal) to be generated in the secondary coils.

The LVDT is connected to a device that measures the voltage and uses it to tell us how much the core has moved. This allows us to measure very small distances, even down to the micrometer (which is a millionth of a meter!).

So, by using an LVDT, we can measure movement and distance very accurately, which can be helpful in many different fields like engineering, medicine, and manufacturing.