Presence sensor for car door handle, has measurement electrodes outside and printed circuit reference electrodes inside the handle recess to create electric fields in the detection zones

摘要

A car door handle presence sensor has measurement electrodes (17, 18) outside and printed circuit reference (12, 13) electrodes inside the handle recess to create electric fields (16) in the detection zones (20) and with a direct current supply and decoupling capacitors for grounding of measurement frequencies.