Magnetic camera for visualizing magnetic fields of home appliances

Household appliances need to meet electromagnetic compatibility standards. We have developed a system to detect, observe and monitor magnetic field strength generated from electrical components and household appliances. The system comprises of an array of Hall Effect sensors, a video camera and a computer. Using the proposed system, magnetic field strength of tested device can be captured and displayed in a three-dimensional surface map. Several examples are demonstrated to capture and observe the magnetic field strength of tested devices.