Sensor fields

Hoffmann + Krippner has developed freely programmable resistive sensor fields as flexible solutions for a variety of applications.

The shape, surface and design can be customized according to specific wishes and requirements. Accordingly, not only square and rectangular but also round, oval and even triangular keypads can be produced.

As stepless touch-sensitive keys, they can be easily integrated into membrane keyboards or other control elements.

How does it work?

The operating principle of sensor fields resemble that of a resistive touch screen. The conductive layers are printed along the x- and y-axis, separated by so-called spacers. Upon actuation of the sensor fields, the respective x and y values are passed on to a controller, thus determining the exact position.

Simply the non-existent transparency distinguishes the sensor fields from a touch screen.

As an example, the sensor fields are used as mousepads where manual operation with gloved hands is required – applications where capacitive systems are limited. Individually designed surfaces additionally maximize the flexibility and individuality in custom applications.

Pros and cons

Pros

  • freely programmable
  • operation with gloved hands
  • continuously
  • Any shape possible

Cons

  • Gesture control is very limited
  • Wear due to the mechanical stress during operation

Applications