RFID式应变传感器的研究进展与应用

A Review of the Development and Application of the RFID Strain Sensor

无线射频识别技术(RFID)具有非接触性,现已在国内外得到迅速发展,本世纪以来,许多学者尝试将该技术引入应变传感器的研发中,实现了无源无线应变测量。在应变测量中引入RFID技术有两种思路,可以以RFID标签中的天线作为测量单元,通过应变下天线电学性质的改变来测量应变;也可以把RFID标签与传统的应变计相连,在RFID标签中存储应变数据。首先介绍了RFID技术用于测量应变的原理,再列举了两种思路下学者们提出的RFID式应变传感器以及配套的阅读器,并总结RFID式应变传感器的应用现状,展望其发展前景。

As an automatic and contactless identify technology, radio frequency identification （RFID） technology has been developing rapidly at home and abroad, since this century, many scholars try to use this technology to produce passive wireless strain sensors. There are two way to introduce RFID technology, regard the antenna on the RFID tag as measurement unit, through the changes of antenna electrical properties, the strain on the antenna can be measured; or connect RFID tags with traditional strain gauge, the strain data will be stored in the RFID tag. This paper firstly introduces the principle of using RFID technology for strain measurement,the list RFID strain sensors and the RFID readers supported by scholars under the guidance of the two ideas, finally summarize the present situation of the RFID strain sensor and prospects its future.