Formal method for PSC design optimization of 13.56 MHz resistive Wireless Analog Passive Sensors (rWAPS)
Formal method for PSC design optimization of 13.56 MHz resistive Wireless Analog Passive Sensors (rWAPS)
复制标题
13.56 MHz 电阻式无线模拟无源传感器 (rWAPS) PSC 设计优化的正式方法
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
B. Morshed
中科院分区：
文献类型：
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作者：
B. Noroozi;B. Morshed
在自然环境中收集生理信号的全无源无线穿戴式传感器对于医疗网络物理系统（CPS）患者的无缝和不显眼监测是实用的。在这方面，我们之前提出了一种新型的电阻式无线模拟无源传感器（rWAPS），它是全无源、快速、低成本的，并采用近场感应耦合方法工作。印刷螺旋线圈（PSC）是这种全无源传感器近场无线通信的最佳解决方案之一。本文描述了一种实现和优化PSC线圈对的形式化方法。这一复杂的多元优化问题需要经过迭代才能得到最优解。根据线圈尺寸、轨道尺寸和匝数进行优化设计后，在两层PCB上制作了线圈对。副线圈尺寸限制在20mm的小尺寸，而载波频率选择为ISM频段内的13.56 MHz。从原型测量的评估和理论计算的结果发现是一致的。这种PSC设计优化方法在我们之前报道的用于身体穿戴和可穿戴医疗CPS的基于电阻式传感器的无线模拟无源传感器（rWAPS）中是实用的。
Fully passive wireless body-worn sensors that collect physiological signals in natural settings is practical for seamless and unobtrusive monitoring of patients for medical cyber physical systems (CPS). In this regard, we have previously presented a novel Resistive Wireless Analog Passive Sensor (rWAPS), which is fully-passive, fast, low cost, and operates on the near field induction coupling method. Printed spiral coils (PSC) are one of the best solutions for near-field wireless communication for this fully-passive sensor. This paper describes a formal method to implement and optimize PSC coil pairs for such a system. Iterative process is required to reach optimal solutions of this complex multivariate optimization problem. After optimum design based on coil dimension, track size, and number of turns, a coil pair was fabricated on 2-layer PCB. The secondary coil size was restricted to a small footprint of 20mm, while the carrier frequency was selected as 13.56 MHz within ISM frequency band. Evaluation of the measurement from the prototypes and theoretically calculated results were found to be in agreement. This approach of PSC design optimization is practical for its application in our previously reported resistive transducer based wireless analog passive sensors (rWAPS) for body worn and wearable medical CPS.