Överföring av elektrisk signal och effekt med magnetisk induktion.
This report tested the possibility of using induction as a mean for transferring data and power so that it can be implemented as a communication medium between a terminal and measuring head mounted in a measuring frame. This would eliminate the need for the cable bunches that are used today. For testing, signal generators were used to generateFSK-signals and were transferred with the help of inductors to the oscilloscope for signal detection, this to see how the coils used in the tests behaved. Simulations of a PLL were performed to see how good it could handle FSK-demodulation. With the help of a PLL IC and the simulations a working FSK-demodulator could be assembled. This showed that the simulations and reality is in good agreement. The final results shows that it?s possible to transfer FSK-modulated data in either direction but that the desired effect isn?t possible to transfer because of the existing coupling factor that exist in the coils core used in the test.