Method for detecting barrier in a movement area, involves utilizing capacitive measuring using electrodes and test circuits so that volume elements of movement area receives influence on capacitance between each of active electrodes

摘要

The method involves utilizing capacitive measuring using electrodes and test circuits so that the volume elements of the movement area receives the influence on the capacitance between each of the active electrodes by using different electrodes repeatedly. Two electrodes are attached to a resonant circuit operable in resonance, whose resonant frequency is changed by the barrier. A capacitive electrical achievement is linked into a potential barrier from electrically leading material and uncoupled in other place from the obstacle. An independent claim is also included for a device for detecting a barrier containing in a movement area.