Inductive loops for sensing position as signature signals

• Main Authors: Larbani, Sofiane, Abdul Malik, Noreha, Nordin, Anis Nurashikin, Khan, Sheroz, Shobaki, Mohammed M.
• Format: Article
• Language: English
• Published: IOP Publishing 2013
• Subjects: TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
• Online Access: http://irep.iium.edu.my/41257/1/1757-899X_53_1_012033.pdf; http://irep.iium.edu.my/41257/; http://iopscience.iop.org/1757-899X/53/1/012033
• Institution: Universiti Islam Antarabangsa Malaysia

In this paper, an inductive sensing technique made of a special shaped inductive loop is proposed. The inductive loop has an inner turn fitted within an outer turn, making a total inductance value 100μH. This loop is made to be shown with balanced response using three capacitance values of 0.068μF each when a sinusoidal voltage source of 5V peak-to-peak is applied. The variation of the relative permeability of the inductance of the inductive loop (AL) results in a variation of the overall inductance value (L+AL), that causes the output signal to change in term of shape and amplitude for variation of total inductance sweep over a given period of time. As a result of change in inductance value (lμH) there is a correspondence increase of 300mV. Theoretical derivations have showed in close agreement with the simulation plots obtained using Multisim software.