This is a demo of a lighting control system controlled by a battery-less switch. The sensors in the switch are battery-less and activated by wireless energy transmitters.

In this demo, four wireless energy transmitters, which works at 920MHz and embedded in LED lights, are employed and create a full wireless-energy-coverage space. All the sensors in this demo are battery-less and can be activated anywhere in the office by the wireless energy transmitters. The sensors measure the acceleration and angles, and then send the sensing data wirelessly to the BEMS server which controls the LED lights.

For details of the research, please refer to the following papers:

Daiki Maehara, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki. Experimental Study on Battery-less Sensor Network Activated by Multi-point Wireless Energy Transmission, IEICE Trans. Commun., IEICE, Vol. E99-B, No. 4, Apr. 2016

Daiki Maehara, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Minoru Furukawa. Experiments Validating the Effectiveness of Multi-point Wireless Energy Transmission with Carrier Shift Diversity, IEICE Trans. Commun., IEICE, Vol. E97-B, No. 9, Sep. 2014.

Tao YU, Yusuke KUKI, Gento MATSUSHITA, Daiki MAEHARA, Seiichi SAMPEI, Kei SAKAGUCHI, “Design and Implementation of Lighting Control System Using Battery-Less Wireless Human Detection Sensor Networks,” IEICE Trans. Commun. vol. E100-B no.6 pp.974-985, Jun. 2017.

Tao Yu, Yusuke Kuki, Gento Matsushita, Daiki Maehara, Seiichi Sampei, Kei Sakaguchi. Deployment of LED light control system using battery-less wireless human detection sensor networks, RFID-TA 2015, IEEE, 2015

Gento Matsushita, Daiki Maehara, Yusuke Kuki, Kei Sakaguchi, Seiichi Sampei, Kiyomichi Araki. Wireless Grid to realize Battery-less Sensor Networks in Indoor Environments, APMC2014, IEEE, pp. 690 – 692, Nov. 2014.