Development of a contactless cable mapping device through electromagnetic induction method for wall embedded conductors/
Kyle J. Amantillo, Ronan Cris S. Cruz, Mike Andrei N. Degano, Gileana L. Marcelo, Pia Rafaella G. Pahate, and Dianne A. Rio.--
- Manila: Technological University of the Philippines, 2025.
- xxxv, 212pages: 29cm.
Bachelor's thesis
College Of Engineering.--
Includes bibliographic references and index.
This study aims to develop a contactless cable mapping device using the principle of electromagnetic induction, capable of detecting and mapping the magnitude of magnetic field generated by live conductors embedded within concrete hollow block walls. The primary objectives are to design the transmitter
coil that induces eddy currents at a specific frequency when the wire is de- energized, and to develop and calibrate a magnetometer array for magnetic flux
density measurement during energized conditions - both of which are critical components for building the device’s sensor module. Researchers made use of an FG – 100 DDS function generator, AD620 Amplifier Module for voltage measurements and HMC5883L as the magnetometer array component. A 600 turns, 14.84 milli Henries transmitter coil was developed, capable of transmitting readable signals at 50 000 Hz and at 10 centimeters away from the target. When paired with the AD620, the coil demonstrated the ability to detect small, induced voltages from energized conductors, suggesting its potential as both a transmitting and receiving element for magnetic field signals. Whereas a 4 × 4 magnetometer array was created along with a magnetic field mapping program that can display real – time intensity of magnetic field within the scope of detection of the array. The calibration was executed using Magneto V1.2 software, this algorithm allowed the distorted measurements from the magnetometer to be mapped back into a more accurate representation of the local magnetic field. Bicubic Interpolation and Filtering program was also employed to detect the
Cable mapping Magnetic detection Sensor calibration