Inductive Touch Sensor

An inductor develops a magnetic field when a current flows through it.

Inductive touch sensor.

Then when your finger which comes either in contact or really close the capacitance of the circuit changes and a touch is detected. The physics unlike capacitive touch sense which requires only a pcb capacitor and a fingertip inductive touch sense involves two separate components. This paper discusses the technologies of capacitive and inductive sensors and concludes with a key feature comparison. 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.

Like inductive sensors capacitive sensor outputs can be no nc or analog. As compared to mechanical switches they offer almost ideal conditions. Non contact operation free from any wear and tear high switching frequencies and accuracy. A key step in selecting a position sensor is understanding the requirements of sensor size resolution repeatability accuracy mounting constraints and environmental ruggedness.

For inductive i ve seen two kinds one that s pen based where there are a bunch of elements putting out a small em. In capacitive touch they lay down a grid of indium tin oxide ito and connect it to some sensors. Comparison between inductive and capacitive proximity sensors. A wide variety of inductive touch sensor options are available to you such as pressure sensor other and room.

Inductive sensors are nowadays indispensable for industrial applications. To start with what s similar let s talk about the internals of inductive and capacitive prox switches. Inductive touch sense as you might have guessed is a technique in which touch events are detected by measuring changes in inductance. A pcb inductor and a metal plate.

The mechanical design should take into consideration the material properties button geometry and sensor construction and mounting. While there are clear differences between the two types of sensors there are similarities as well. Inductive sensing based designs for touch on metal offers a completely sealed and contactless solution with a greatly simplified assembly process. You can also choose from other inductive touch sensor as well as.

An inductive sensor is a device that uses the principle of electromagnetic induction to detect or measure objects.