Dual port temperature sensor tag for passive UHF RFID systems
Dual port temperature sensor tag for passive UHF RFID systems
复制标题
适用于无源 UHF RFID 系统的双端口温度传感器标签
DOI：
10.1108/sr-12-2011-681
复制
发表时间：
2014-01-01
期刊：
影响因子：
1.6
通讯作者：
Sydanheimo, L.
中科院分区：
文献类型：
--
作者：
Virtanen, J.;Yang, F.;Sydanheimo, L.
目的-本文的目的是开发一种新型的全无源，无线温度传感器标签的基础上超高频（UHF）射频识别（RFID）技术。通过使用嵌入在标签天线基板中的蒸馏水来实现温度感测功能。这种新型传感器标签旨在提供与商用热电偶温度计相当的无线温度读数，即使在具有高水平干扰（如反射）的环境中也是如此。新型传感器标签的结构的目的是增加其可用性，最大限度地减少用户创建的错误，并简化测量procedure.Design/方法/途径-传感器标签是基于一个双端口传感的概念，其中两个端口被用来获得传感器读数。通过利用两个端口而不是一个端口，可以有效地消除环境干扰、标签读取器天线方向和距离的影响。最小化从两个端口的操作特性获取传感器阅读的两种替代方法被提出和讨论。结果-在实际情况下的温度测量表明，通过利用双端口感测概念，开发的标签产生无线温度读数，这是可比的读数从商业热电偶温度计。研究限制/影响-介绍了双端口传感的概念，并介绍和讨论了从端口工作特性的差异中提取传感器读数的两种替代方法。在本文中，双端口传感的概念是利用在创建一个温度传感器标签，然而，相同的概念可以利用在各种无源无线传感器的基础上UHF RFID技术。这为设计精确、易于使用和易于集成的无源传感器提供了一种新方法。双端口传感的概念是在其发展的早期阶段，它的准确性可以提高通过开发更先进的数据后处理technologies.Practical影响-一个无源双端口UHF RFID启用温度传感器标签的准确性被证明是足够的，在许多应用中。这表明利用双端口感测概念的其他传感器类型也可以达到高精度水平。此外，与仅配备单个端口的传感器标签相比，基于双端口传感概念的无源RFID传感器在可用性方面具有上级优势。因此，双端口传感概念在无源超高频RFID传感器标签可以使这种传感器更有吸引力的商业和真正广泛的无处不在的传感和computing. Origality/值-本文提出了一种新的无源，无线温度传感器标签的超高频RFID系统。传感器标签采用了一种新的结构，允许两个端口和两个标签天线的紧密集成。开发的标签的准确性在整个测量过程中得到了确认，并且发现在实际测量场景中与商业温度计的准确性相当。此外，本文提出了一种双端口传感的概念和两种读出方法的概念，旨在提高各种UHF RFID传感器标签的准确性和可用性。
Purpose - The purpose of this paper is to develop a novel totally passive, wireless temperature sensor tag based on ultra high-frequency (UHF) radio frequency identification (RFID) technology. The temperature-sensing functionality is enabled by using distilled water embedded in the tag antenna substrate. The novel sensor tag is designed to provide wireless temperature readings comparable to a commercial thermocouple thermometer even in environments with high levels of interference, such as reflections. The structure of the novel sensor tag is aimed to increase its usability by minimizing user-created errors and to simplify the measurement procedure.Design/methodology/approach - The sensor tag is based on a dual port sensing concept in which two ports are used to obtain sensor readings. By utilizing two ports instead of one, the effects of environmental interference, tag-reader antenna orientation and distance can be effectively. minimized. Two alternative methods of acquiring the sensor reading from the operating characteristics of the two ports are presented and discussed.Findings - Temperature measurements in practical scenarios show that by utilizing the dual port sensing concept, the developed tag produces temperature readings wirelessly which are comparable to readings from a commercial thermocouple thermometer.Research limitations/implications - The concept of dual port sensing was shown and two alternative methods on extracting sensor readings from the differences in the port operating characteristics were introduced and discussed. In this paper, the dual port sensing concept is utilized in creating a temperature sensor tag; however, the same concept can be utilized in a variety of passive wireless sensors based on UHF RFID technology. This enables a new approach in designing accurate, easy to use and easily integrable passive sensors. The dual port sensing concept is in its early stages of development; its accuracy could be improved by developing more advanced data post-processing techniques.Practical implications - The accuracy of a passive dual port UHF RFID-enabled temperature sensor tag is proven to be sufficient in many applications. This indicates that other sensor types utilizing the dual port sensing concept can reach high levels of accuracy as well. Furthermore, the passive RFID-enabled sensors based on the dual port sensing concept are superior in usability versus sensor tags equipped only with a single port. Therefore, dual port sensing concept in passive UHF RFID-enabled sensor tags could make such sensors more attractive commercially and lead to truly widespread ubiquitous sensing and computing.Originality/value - This paper presents a novel passive, wireless temperature sensor tag for UHF RFID systems. The sensor tag utilizes a new structure which allows tight integration of two ports and two tag antennas. The accuracy of the developed tag is confirmed throughout measurements and it is found comparable to the accuracy of commercial thermometers in practical measurement scenarios. Moreover, the paper presents a dual port sensing concept and two readout methods based on the concept which are aimed to increase the accuracy and usability of all kinds of UHF RFID-enabled sensor tags.