Wide Remote-Range and Accurate Wireless LC Temperature-Humidity Sensor Enabled by Efficient Mutual Interference Mitigation

被引：5

作者：

Lv, Wen ^{[1
]}

Zhang, Yongwei ^{[1
]}

Luo, Hanyu ^{[1
]}

Xu, Qingda ^{[1
]}

Quan, Wenjing ^{[1
]}

Yang, Jianhua ^{[1
]}

Zeng, Min ^{[1
]}

Hu, Nantao ^{[1
]}

Yang, Zhi ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, Dept Micro Nano Elect, Key Lab Thin Film & Microfabricat,Minist Educ, Shanghai 200240, Peoples R China

来源：

ACS SENSORS | 2023年 / 8卷 / 12期

基金：

中国博士后科学基金; 上海市自然科学基金; 中国国家自然科学基金;

关键词：

wireless sensor; inductor-capacitor device; integrated electronics; dual-target sensing; mutualinterference;

D O I：

10.1021/acssensors.3c01200

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Inductor-capacitor wireless integrated sensors (LCWISs) featuring untethered and multitarget measurements are promising in health monitoring and human-machine interfaces. However, the lack of a profound understanding of the internal interference hinders the design of the LCWIS, which has a wide remote sensing range and high accuracy. Herein, a mutually exclusive effect of the mutual inductance interferences in LCWIS was revealed and quantified, enabling a design with a wide range of remote sensing (working distance comparable to the single-target device, working radius: 4 mm) and 16% reduced area. As a key to accurate multitarget measurement, a quantified target interference model based on interference decomposition was proposed to understand the target interferences, providing profound guidance for the design of ultra-accurate LCWIS. As a proof, we designed a cellulose-polyacrylate-cellulose LCWIS (CPC-LCWIS) with ultrahigh accuracies (similar to 1.2% RH and similar to 0.18(degrees)C) beyond commercial wired gauges. The CPC-LCWIS with full-coil sensing structures achieved exceptionally high sensitivities (0.36 MHz/& C-degrees and 0.25 MHz/% RH). The CPC-LCWIS was validated for health monitoring and human-machine interfaces. The concept studied in this work provides profound guidance for designing a high-performance flexible LCWIS for advanced wearable electronics.

引用

页码：4531 / 4541

页数：11