부산대학교 도서관

Currently, the automatic management of roadside parking space remains a significant challenge. Installing cameras next to each roadside parking space is an extremely expensive solution. Utilizing Bluetooth beacons to identify vehicles requires the installation of a Bluetooth device on each vehicle. This not only necessitates vehicle power supply but also poses installation difficulties. Additionally, the Bluetooth devices installed on parking space need to operate for extended periods, consuming a significant amount of electrical energy and requiring grid power supply. To reduce system costs, alleviate installation difficulties, and achieve complete autonomy in power supply, this article proposes a solar-powered and radio frequency (RF) energy transmission-based Internet of Things (IoT) management system for roadside parking space. We have designed both the mobile and fixed terminal of the system. The fixed terminal is powered by solar panels, enabling it to emit RF energy, retrieve vehicle information, automatically track time, and upload data. The mobile terminal is designed as a passive device capable of receiving RF energy and transmitting vehicle information. Through experimental testing, the system successfully achieves automatic retrieval and upload of vehicle information and parking duration, thereby validating the feasibility of the proposed system. Since the mobile terminal is a passive device and the fixed terminal is powered by solar panels, no external power supply is required. This project introduces for the first time the utilization of solar energy conversion into RF power supply, enabling the mobile terminal to function as a passive device without the need for external power or internal batteries.