Patent ID: 7920977

Claim:
A noncontact measurement method of a plurality of superconductive wires connected in parallel, the noncontact measurement method comprising steps of: (a) arranging a plurality of hall sensors for measuring voltage values based on magnetic fields generated around the plurality of superconductive wires; (b) inputting and saving a matrix relation equation between the voltage values measured by the hall sensors, current values of currents flowing through the superconductive wires, and a variable matrix having a plurality of variables defining relations between the voltage values and the current values; (c) applying predetermined measurement current values to the plurality of superconductive wires a plurality of times and measuring and saving measurement voltage values corresponding to the measurement current values through the plurality of hall sensors; (d) calculating the variables of the variable matrix by substituting the measurement current values and the measurement voltage values into the matrix relation equation saved; and e) calculating and outputting unknown current values of unknown currents flowing through the superconductive wires by substituting a plurality of unknown voltage values measured by the plurality of hall sensors when the unknown currents flow through the superconductive wires and the variable matrix calculated at the step (d) into the matrix relation equation.