Pattern recognition based on the measurements of low-frequency electromagnetic radiation

A method to measure the low-frequency electromagnetic radiation based on virtual instrument is presented in this paper. According to the virtual instrument technology, the paper employs LabView virtual instrument programming language, modulating programming method and related instruments to devise an automatic measuring system to the radiation. We use the system to measure the radiation, analyze the measuring data, and then use the Wardpsilas method of hierarchical cluster to realize the pattern recognition of different radiance sources, such as cell phones, computers and so on. The whole system is user-friendly, easy to operate.