Abstract:  In recent years, wireless power transmission (WPT) has been widely applied in various fields such as energy, medical, and communication, becoming a research hot spot in the electromagnetic domain. Compared to wired transmission, WPT offers greater flexibility and safety; however, issues like high costs for equipment replacement and maintenance still exist. This paper presents the design and implementation of a wireless energy communication system utilizing Universal Software Radio Peripheral (USRP) technology, along with the development of a counting device for metal detection based on electromagnetic induction principles. Through a pendulum experiment, the system successfully monitored and recorded the oscillation behavior of a metal ball, demonstrating its feasibility and effectiveness in detecting metallic targets. Additionally, this paper explores the extensive application potential of USRP in signal processing and communication systems, highlighting its advantages in enhancing system flexibility and performance.

Key words:  wireless power transfer, USRP, metal detection