Inductive Touch Sensor

A pcb inductor and a metal plate.
Inductive touch sensor. In addition to being insensitive to dirt moisture and other contaminants inductive touch on metal buttons offer a robust solution that does not use moving. In capacitive touch they lay down a grid of indium tin oxide ito and connect it to some sensors. While there are clear differences between the two types of sensors there are similarities as well. A wide variety of inductive touch sensor options are available to you such as pressure sensor other and room.
The physics unlike capacitive touch sense which requires only a pcb capacitor and a fingertip inductive touch sense involves two separate components. Then when your finger which comes either in contact or really close the capacitance of the circuit changes and a touch is detected. Alternatively a current will flow through a circuit containing an inductor when the magnetic field through it changes. Like inductive sensors capacitive sensor outputs can be no nc or analog.
Non contact operation free from any wear and tear high switching frequencies and accuracy. For inductive i ve seen two kinds one that s pen based where there are a bunch of elements putting out a small em. Inductive sensing based designs for touch on metal offers a completely sealed and contactless solution with a greatly simplified assembly process. An inductor develops a magnetic field when a current flows through it.
In addition they are insensitive to vibration dust and moisture. Inductive touch system design guide for hmi button applications 1 mechanical design implementing an effective inductive touch solution requires appropriate system mechanical design and matching sensor design. Inductive sensors are nowadays indispensable for industrial applications. As compared to mechanical switches they offer almost ideal conditions.
An inductive sensor is a device that uses the principle of electromagnetic induction to detect or measure objects. To start with what s similar let s talk about the internals of inductive and capacitive prox switches. You can also choose from other inductive touch sensor as well as. Comparison between inductive and capacitive proximity sensors.
The mechanical design should take into consideration the material properties button geometry and sensor construction and mounting.