B2EH: Batteryless BLE Sensor Network Using RF Energy Harvesting

Recently, wireless sensor nodes (WSNs) are often powered by batteries, and there are significant restrictions on the locations where the nodes may be deployed, the number of deployable devices that can be used, and the node lifetime. The rapid, low-cost, and widespread deployment of battery-free IoT sensors may be achieved with wireless power transfer (WPT). However, ensuring that the harvested power is more than the used power in the event of significant WPT path loss is a crucial design problem for WPT-supplied smart sensors. In this article, we present an architecture of a sensor system that uses Bluetooth Low Energy (BLE) communication and an RF source to power environmental monitoring. RF power harvester, power management, sensing, control, and wireless transmission are all implemented utilizing low-power off-the-shelf components. The effective duty cycle is used in the system sensor to produce the low rate of the center. With fixed power RF as low as -10.9 dBm, the deployed smart sensor can operate dependably. The systemdependent variable has an average resting power of 4.3 W and can transmit up to 30 event packets an hour.