Estimation of Required Transmit Power to Realize Zero Maintenance Sensor System with Space Time Beam Forming Algorithm

First step to realize a smart factory is effective placement of IoT sensors in all the equipment. Even though many energy efficient solutions are aimed at enhancing the life time of an IoT sensor, additional maintenance is required to replace batteries after a stipulated amount of time. To overcome this additional burden and realize a Zero Maintenance Sensor System (ZMSS), Space Time Beam Forming (STBF) algorithm based on 5.8 GHz microwave power transfer is evaluated to estimate required transmit power for 2 types of sensors namely Ultra Low Power (ULP) and Low Power (LP) consumption sensors and compared the results with typical beam splitting algorithms namely Max-Sum and Max-Min.