| 摘要 |
The device of the present invention comprises a ring ( 1 ) of a ferrite material and two coils ( 4, 5 ) wound around it. A alternating current is fed to one of the coils ( 4 ). This current gives rise to an alternating magnetic field within and along the ring, which in turn generates an alternating electric field. A specimen ( 3 ) is placed in the alternating electric field. The dielectric properties of the specimen ( 3 ) affect the electric field, which in turn induces a magnetic field and generates currents in the coils ( 4, 5 ). As the dielectric properties of the specimen ( 3 ) depend on its glucose level, the glucose level can therefore be measured by determining a parameter depending on the inductances of the coils.
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