Contactless control with CapKeys

Schurter

Andrea Gillhuber, 27.08.2020, 07:50

Contactless control with CapKeys

Schurter has developed a capacitive sensor with increased sensitivity. Fingers are thus recognized as soon as they are approached.

Active field line guidance increases the sensitivity of Schurter's capacitive sensors so that a finger is detected as soon as it approaches. To achieve this, the field lines of the projected capacitive sensor surface are concentrated upwards instead of being scattered around the keypad. This enables contactless activation of the capacitive buttons. To activate a touch surface, all you need to do is bring your finger close to the capacitive field of the CapKeys.

Contactless control

By developing its own sensor design and fine-tuning the controller, the company has succeeded in making a projected capacitive touchscreen "touchless". The touchscreen reacts to a small distance between the finger and the actual surface. The hardware and software settings of the PCAP controller, particularly with regard to sensitivity, are decisive here.

The "touchless" operation of CapKey and PCAP controllers enables a higher standard of hygiene. The operating fronts of coffee and parking machines, for example, no longer need to be touched for activation. The touchscreens in public areas remain untouched and therefore clean. This "touchless actuation option" in the application can be activated or deactivated by the customer.

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