Title :
An Experimental Study on Wireless Magnetic Communication with Smart Phone Using a MEMS Magnetometer
Author :
Wang Jiabo ; Chen Xi
Author_Institution :
Space Center, Tsinghua Univ., Beijing, China
Abstract :
Most of smart phones are equipped with a MEMS magnetometer. While it is often used as an electronic compass, it can also be used as a communication receiver. In this work, we report our experimentation on wireless magnetic communication with a smart phone using its MEMS magnetometer as the receiver. The transmitter is a simple magnetic induction excited by an operational amplifier. A 25bps data rate was achieved using BPSK with sample rate 75Hz at the receiver. To enable such low rate magnetic communication, a smart phone only needs additional software to allow the MEMS magnetometer to receive artificial quasi-static magnetic fields modulated with data.
Keywords :
electromagnetic induction; magnetometers; microsensors; phase shift keying; smart phones; BPSK; MEMS magnetometer; artificial quasistatic magnetic field; bit rate 25 bit/s; communication receiver; magnetic induction; operational amplifier; smart phone; wireless magnetic communication; Coils; Magnetoacoustic effects; Magnetometers; Receivers; Smart phones; Synchronization; Transmitters; Early Late Gate; Magnetic Communication; Magnetometer; Smart Phone;
Conference_Titel :
Green Computing and Communications (GreenCom), 2013 IEEE and Internet of Things (iThings/CPSCom), IEEE International Conference on and IEEE Cyber, Physical and Social Computing
Conference_Location :
Beijing
DOI :
10.1109/GreenCom-iThings-CPSCom.2013.373
