Inductive Touch Sensor

The mechanical design should take into consideration the material properties button geometry and sensor construction and mounting.

Inductive touch sensor.

In capacitive touch they lay down a grid of indium tin oxide ito and connect it to some sensors. The physics unlike capacitive touch sense which requires only a pcb capacitor and a fingertip inductive touch sense involves two separate components. Like inductive sensors capacitive sensor outputs can be no nc or analog. A wide variety of inductive touch sensor options are available to you such as pressure sensor other and room.

To start with what s similar let s talk about the internals of inductive and capacitive prox switches. While there are clear differences between the two types of sensors there are similarities as well. An inductive sensor is a device that uses the principle of electromagnetic induction to detect or measure objects. Then when your finger which comes either in contact or really close the capacitance of the circuit changes and a touch is detected.

Non contact operation free from any wear and tear high switching frequencies and accuracy. In addition they are insensitive to vibration dust and moisture. As compared to mechanical switches they offer almost ideal conditions. For inductive i ve seen two kinds one that s pen based where there are a bunch of elements putting out a small em.

A key step in selecting a position sensor is understanding the requirements of sensor size resolution repeatability accuracy mounting constraints and environmental ruggedness. Comparison between inductive and capacitive proximity sensors. You can also choose from other inductive touch sensor as well as. 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.

This paper discusses the technologies of capacitive and inductive sensors and concludes with a key feature comparison. Alternatively a current will flow through a circuit containing an inductor when the magnetic field through it changes. Inductive sensors are nowadays indispensable for industrial applications. A pcb inductor and a metal plate.

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.