Personal area networks (PAN) : near-field intra-body communication
Personal area networks (PAN) : near-field intra-body communication
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发表时间：
1995
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通讯作者：
Thoams Guthrie Zimmerman
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作者：
Thoams Guthrie Zimmerman
PAN是一种无线通信系统，它允许人体上和附近的电子设备通过近场静电耦合交换数字信息。信息通过调制电场和静电（电容）耦合皮安电流进入人体来传输。身体传导微小的电流（例如，50 pA）至身体安装接收器。环境（“房间接地”）为传输信号提供了返回路径。低频载波（例如，330 kHz），因此没有能量传播，最大限度地减少了远程窃听和相邻PAN的干扰。数字信息的传输使用开关键控与正交检测，以减少杂散干扰，提高接收机的灵敏度。一个低成本（<20美元）的半双工调制解调器，实现使用模拟双极斩波器和积分器作为正交检测器，和一个微控制器的信号采集。PAN中使用的技术可以集成到定制的CMOS芯片中，以实现最低的尺寸和成本。论文导师：Neil Gershenfeld，媒体艺术与科学助理教授这项工作得到了惠普公司和Festo公司的部分支持。个域网（PAN）：近场体内通信
PAN is a wireless communication system that allows electronic devices on and near the human body to exchange digital information through near-field electrostatic coupling. Information is transmitted by modulating electric fields and electrostatically (capactively) coupling picoamp currents into the body. The body conducts the tiny current (e.g., 50 pA) to body mounted receivers. The environment ("room ground") provides a return path for the transmitted signal. A low frequency carrier (e.g., 330 kHz) is used so no energy is propagated, minimizing remote eavesdropping and interference by neighboring PANs. Digital information is transferred using on-off keying with quadrature detection to reduce stray interference and increase receiver sensitivity. A low cost (<$20) half-duplex modem is implemented using an analog bipolar chopper and integrator as a quadrature detector, and a microcontroller for signal acquisition. The technology used in the PAN can be integrated into a custom CMOS chip for lowest size and cost. Thesis Supervisor: Neil Gershenfeld, Assistant Professor of Media Arts and Sciences This work was supported in part by Hewlett-Packard Corporation and Festo Corporation. Personal Area Networks (PAN): Near-Field Intra-Body Communication