Measuring electrode arrangement for capacitive distance sensor utilized for capacitive measurement of distance between object and measuring electrode in motor vehicle, has unit for preventing contamination in form of ice, snow or water

摘要

The electrode arrangement has a measuring electrode (104) for interaction with a counter electrode (105), and a unit (102) i.e. heating unit, for preventing contamination in the form of ice, snow, mud or water. The preventing unit comprises a hydrophobic substance, and the heating unit with a heating wire that is wound around the measuring electrode. The heating unit causes heat generation for energization of the measuring electrode. The heating unit heats a covering of the measuring electrode, where the hydrophobic substance is arranged on the covering. An independent claim is also included for a method for capacitive measurement of a distance between an object and a measuring electrode in a vehicle.