www.nanocdac.com www.nsrcnano.com branches: hyderabad nagpurZigBee Based Intelligent Helmet for Coal MinersAbstract:A cost effective ZigBee-based wireless mine supervising system ispresented in this article. This scheme used intelligent helmets as voiceterminal and ultra-low-power nodes of wireless sensor network. Theprogramme adopted ZigBee wireless technology to build wireless sensornetworks, realized real-time surveillance with early-warning intelligenceon methane, temperature, humidity in mining area, and used speechcommunication to reduce potential safety problems in coal production.This project uses regulated 5V, 750mA power supply. 7805 threeterminal voltage regulator is used for voltage regulation. Bridge type fullwave rectifier is used to rectify the ac output of secondary of 230/18Vstep down transformer.
www.nanocdac.com www.nsrcnano.com branches: hyderabad nagpurAdvantages:1. Reduced cost2. Easy installation3. Will improve system scalability and extend accurate position ofunderground miners in future.Applications:1. Mining applications2. Navigations