Detection method for presence or nature of product in microwave oven involves detection and measurement of microwave signal escaping from orifice positioned in wall of cavity or on waveguide supplying cavity

摘要

The method involves detection and measurement of a microwave signal escaping from an orifice positioned in the wall of the cavity or on the waveguide supplying the cavity, conversion of the escaping microwave signal into an electrical signal and inferring the presence and/or nature of the product placed in the microwave cavity by comparison of the signal level obtained with that of the reference signal.