Patent ID: 11927568
Assignee: THE UNIVERSITY OF BRISTOL
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A wireless ultrasound sensor for non-destructive testing of a test object, the sensor comprising:
an ultrasound transducer having a coupling face arranged to be acoustically coupled to the test object, the ultrasound transducer being arranged to output a pulse of ultrasound into the test object when ultrasound transducer is electrically energised, the ultrasound transducer being arranged to output an electrical signal when the ultrasound transducer is acoustically energised by an ultrasound echo signal from within the test object;
a first induction coil, electrically coupled to the ultrasound transducer; and
a second induction coil, electrically coupled to the ultrasound transducer in parallel with the first induction coil, the outer diameter of the second induction coil being greater than the outer diameter of the first induction coil, the first induction coil providing a first inductance, the second induction coil providing a second inductance and the first inductance being less than or equal to the second inductance, the first induction coil and the second induction coil being arranged to simultaneously electrically energise the transducer when the first induction coil and the second induction coil are inductively coupled to receive power from a remote device, wherein the transducer, the first induction coil and the second induction coil are mounted in a substantially coaxial and coplanar arrangement.