Abstract:Tilt detection of iron towers is crucial for ensuring the safety and stable operation of high-voltage transmission line systems. However, current state detection devices suffer from high power consumption and dependence on chemical batteries. This paper proposes an integrated self-powered wireless sensing system for tower tilt angles. An electromagnetic energy harvester is designed to capture wind energy from high-altitude towers, and low-power energy management circuits are utilized for energy storage and load power supply. The performance of the system is validated through electromagnetic simulation and experiments. Test results demonstrate that the harvester can start at wind speeds as low as 2m/s, and at 8m/s wind speed, the RMS voltage under no-load conditions is 1.25V with an output power of 8.2mW. A low-power energy management circuit is constructed using the BQ25570 chip, which provides power to the tilt angle sensor after boosting to 3.3V. Based on experimental results, this device can power tilt angle sensors or other small electrical devices, providing technical support for self-powered IoT wireless sensing network nodes.