Ramos Javier, Ausín José Luis, Lorido Antonio Manuel, Redondo Francisco, Duque-Carrillo Juan Francisco
Department of Electrical, Electronics and Control Engineering, University of Extremadura, 06006 Badajoz, Spain.
Stud Health Technol Inform. 2013;189:59-64.
Miniaturized, noninvasive, wearable sensors constitute a fundamental prerequisite for pervasive, predictive, and preventive healthcare systems. In this sense, this paper presents the design, realization, and evaluation of a wireless multi-channel measurement system based on a cost-effective high-performance integrated circuit for electrical bioimpedance (EBI) measurements in the frequency range from 1 kHz to 1 MHz. The resulting on-chip spectrometer provides high measuring EBI capabilities and together with a low-cost, commercially available radio frequency transceiver device. It provides reliable wireless communication, constitutes the basic node to build EBI wireless sensor networks (EBI-WSNs). The proposed EBI-WSN behaves as a high-performance wireless multi-channel EBI spectrometer, where the number of channels is completely scalable and independently configurable to satisfy specific measurement requirements of each individual. A prototype of the EBI node leads to a very small printed circuit board of approximately 8 cm2 including chip-antenna, which can operate several years on one 3-V coin cell battery and make it suitable for long-term preventive healthcare monitoring.
小型化、无创、可穿戴传感器是普及型、预测性和预防性医疗保健系统的基本前提。从这个意义上讲，本文介绍了一种基于具有成本效益的高性能集成电路的无线多通道测量系统的设计、实现和评估，该系统用于在1kHz至1MHz频率范围内进行生物电阻抗（EBI）测量。由此产生的片上光谱仪具有高EBI测量能力，并与低成本、市售的射频收发器设备一起，提供可靠的无线通信，构成构建EBI无线传感器网络（EBI-WSN）的基本节点。所提出的EBI-WSN表现为一种高性能无线多通道EBI光谱仪，其中通道数量完全可扩展且可独立配置，以满足每个个体的特定测量要求。EBI节点的原型产生了一个约8平方厘米的非常小的印刷电路板，包括芯片天线，它可以在一个3V硬币电池上运行数年，使其适用于长期预防性医疗保健监测。
