Measurement of Effective Reading Distance of UHF RFID Passive Tags
Measurement of Effective Reading Distance of UHF RFID Passive Tags
复制标题
UHF RFID 无源标签有效读取距离的测量
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Yin
中科院分区：
文献类型：
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作者：
Yuan;Yin
目前，对于制造UHF RFID无源标签，在线检测机制非常简单。该机制试图在近场读取标签ID，从而验证标签的可用性。对于UHF RFID应用，标签可用性是一个非常粗略的指标，无法准确表征标签的性能。在实际应用中，有效阅读距离是标签的关键性能指标。本研究提出以晶片开启功率来表征超高频RFID被动式标签的有效阅读距离。实验结果证明了该方法的可行性。此外，与大规模设置相比，这种小规模设置在有效阅读距离的估计中产生较小的误差。使用微型消声室，微型设置可以在实践中用于在线标签性能检查，以分级标签的符合有效阅读距离。
Currently, for manufacturing UHF RFID passive tags, the online inspection mechanism is very simple. This mechanism tries to read tag IDs in the near field, and hence validates tag’s usability. For UHF RFID applications, tag usability is a very rough indicator and cannot characterize the performance of a tag accurately. In practice, effective reading distance is the key performance index of a tag. This study proposes chip’s turn-on power approach to characterize the effective reading distance of UHF RFID passive tags. The experimental results presented in this paper demonstrated the feasibility of this approach. Moreover, in comparison with the large-scale setup, this mini-scale setup produces a smaller error in the estimation of the effective reading distance. Using a mini anechoic chamber, the mini-scale setup can be adopted in practice for online tag performance inspection to grade tag’s compliance with effective reading distance.