Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China.
Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, China.
Sensors (Basel). 2018 Aug 31;18(9):2879. doi: 10.3390/s18092879.
A high-temperature sensor based on a metamaterial unit cell is proposed in this paper. The wireless passive temperature sensing method is based on the electromagnetic backscatter principle, and thus has the advantages of higher quality, lower environmental interference, and anti-low frequency interference. We developed a finite-element method-based model for the sensor via high-frequency simulation software (HFSS). A double split-ring resonator (SRR) with an outer ring length of 13 mm was designed on alumina ceramic substrate. The sensor was fabricated at 2.42 GHz using micromechanical technology and screen printing technology. When the temperature increased from 28 to 1100 °C, the resonant frequency decreased from 2.417 to 2.320 GHz with an average sensitivity of 95.63 kHz/°C. As the sensor is easily designed and fabricated, it can be used for chipless radio frequency identification (RFID) tags by simply changing the size of rings. Furthermore, emerging 3D printing technology and commercial desktop inkjet printers will be used to realize the rapid low-cost preparation of the sensor, enabling its wide range of applications in aerospace, military, manufacturing, transportation, and other fields.
本文提出了一种基于超材料单元的高温传感器。无线无源温度传感方法基于电磁背散射原理，因此具有更好的质量、更低的环境干扰和抗低频干扰的优点。我们通过高频仿真软件 (HFSS) 为传感器开发了一个基于有限元方法的模型。在氧化铝陶瓷基板上设计了一个外圆环长度为 13mm 的双环形谐振器 (SRR)。该传感器使用微机械技术和丝网印刷技术在 2.42GHz 频率下制造。当温度从 28°C 升高到 1100°C 时，谐振频率从 2.417GHz 降低到 2.320GHz，平均灵敏度为 95.63kHz/°C。由于传感器易于设计和制造，只需改变圆环的尺寸，就可以用于无芯片射频识别 (RFID) 标签。此外，新兴的 3D 打印技术和商业桌面喷墨打印机将用于实现传感器的快速低成本制备，使其在航空航天、军事、制造、运输等领域得到广泛应用。
