Radio-Frequency Energy Harvesting and Wireless Power Transfer System
The proliferation of Internet of Things (IoT) allows more sensors to be used for monitoring, detection and security purposes. However, this also introduces new problems to the user:Short sensor's lifespan (due to reliance on battery as the main power source) affecting the service operation, Cost and hassle associated with frequent maintenance and battery disposal, especially when sensors are scattered across multiple locations and can run out of battery at different points in time, andTime wasted on planning, coordinating, and installing of power cord layout to accommodate increasing numbers of sensors (for sensors using power cord as the main power source).Hence, conventional powering methods are not sustainable to support thousands of sensors. Therefore, we have developed wireless power transfer technology to solve the problems. Our system can be integrated into the sensors and provides an alternative power source to the sensors, effectively extending the sensor's lifetime and resulting in less frequent replacement/maintenance. This can help to remove the costs associated with battery replacement, battery disposal, and cabling installation.