WIRELESS ULTRASOUND SENSOR

摘要

A wireless ultrasound sensor (404) for non-destructive testing of a test object (502), the sensor comprising: an ultrasound transducer (406); a first induction coil (408), electrically coupled to the ultrasound transducer; a second induction coil (414), electrically coupled in parallel with the first induction coil; wherein the first and second induction coils are arranged to enable the transducer to be inductively operated by a remote device (504); and wherein the diameter of the second induction coil is greater than the diameter of the first induction coil.