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Wearable multilead ECG sensing systems using on-skin stretchable and breathable dry adhesives

2018中国信息通信大会(CICC2018)

作者： Hang Jiang Caixia Wang Tao Xiu Xuefeng Zhan Dongdong Wang Susu Hu Xiaodong Chen Junsheng Yu Yuan Yao School of Electronic Engineering Beijing University of Posts and Telecommunications Jiangsu Hengtong Terahertz Technology Co. Ltd.

This paper presents a millimeter-wave wireless communication system built on the basis of photoelectric *** achieve a transmission rate of up to 5Gbps and a wireless transmission distance of 25 meters at W-band（75-110 GHz）by the method of intensity modulation and direct *** better demonstration,naked-eye 3 D video of 3 Gbps is used as the baseband signal for *** receive video images without interruption at the receiving end.

关键词： millimeter wave communication system wireless transmission

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Bio-Design and Manufacturing 2024年第2期7卷 167-180页

作者： Yingxi Xie Longsheng Lu Wentao Wang Huan Ma School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510641China College of Automotive and Mechanical Engineering Changsha University of Science and TechnologyChangsha 410114China Guangdong Cardiovascular Institute Guangdong Provincial People’s HospitalGuangzhou 510080China

Electrocardiogram(ECG)monitoring is used to diagnose cardiovascular diseases,for which wearable electronics have attracted much attention due to their lightweight,comfort,and long-term *** study developed a wearablemultilead ECG sensing system with on-skin stretchable and conductive silver(Ag)-coated fiber/silicone(AgCF-S)dry *** and normal adhesion to pigskin(0.43 and 0.20 N/cm2,respectively)was optimized by the active control of fiber density and mixing ratio,resulting in close contact in the electrode–skin *** breathableAgCF-S dry electrodewas nonallergenic after continuous fit for 24 h and can be reused/cleaned(>100 times)without loss of *** AgCF encapsulated inside silicone elastomers was overlapped to construct a dynamic network under repeated stretching(10%strain)and bending(90°)deformations,enabling small intrinsic impedance(0.3,0.1 Hz)and contact impedance variation(0.7 k)in high-frequency vibration(70 Hz).All hard/soft modules of the multilead ECG system were integrated into lightweight clothing and equipped with wireless transmission for signal *** synchronous acquisition of I–III,aVR,aVL,aVF,and V4 lead data,the multilead ECG sensing system was suitable for various scenarios,such as exercise,rest,and sleep,with extremely high signal-to-noise ratios.

关键词： Multilead electrocardiogram Dry electrodes Wearable electronics wireless transmission

A self-powered biosensor based on triboelectric nanogenerator for dual-specificity bacterial detection

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InfoMat 2024年第3期6卷 117-130页

作者： Wei Lu Xiaoqiang Wang Congyu Wang Ke Gong Jiawei Li Xue Li Peng Wang State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical EngineeringChina University of Petroleum(East China)Qingdaothe People's Republic of China Institute of Oceanology Chinese Academy of SciencesQingdaothe People's Republic of China School of Material Science and Engineering China University of Petroleum(East China)Qingdaothe People's Republic of China State Key Laboratory of Microbial Technology Shandong UniversityQingdaothe People's Republic of China Guangxi Academy of Sciences Nanningthe People's Republic of China

Pathogenic and corrosive bacteria pose a significant risk to human health or economic *** specific,sensitive,and on-site detection of these bacteria is thus of paramount significance but remains *** inspiration from immunoassays with primary and secondary antibodies,we describe here a rational design of microbial sensor(MS)under a dualspecificity recognition strategy using Pseudomonas aeruginosa(***)as the detection *** the MS,engineered aptamers are served as the primary recognition element,while polydopamine-N-acetyl-D-galactosamine(PDA-Gal NAc)nanoparticles are employed as the secondary recognition element,which will also generate and amplify changes in the output voltage sig*** achieve self-powering capability,the MS is constructed based on a triboelectric nanogenerator(TENG)with the specific aptamers immobilized on the TENG electrode *** as-prepared MS-TENG system exhibits good stability in output performance under external forces,and high specificity toward ***,with no cross-reactivity observed.A linear relationship(R^(2)=0.995)between the output voltage and *** concentration is established,with a limit of detection estimated at around 8.7×10^(3) CFU mL^(-1).The utilization of PDA-Gal NAc nanoparticles is found to play an important role in enhancing the specific and reliability of detection,and the underlying mechanisms are further clarified by computational *** addition,the MS-TENG integrates a wireless communication module,enabling real-time monitoring of bacterial concentration on mobile *** work introduces a pioneering approach to designing self-powered smart microbial sensors with high specificity,using a double recognition strategy applicable to various bacteria beyond ***.

关键词： bacterial detection high specificity microbial sensor triboelectric nanogenerator wireless transmission

Intelligent textiles make life wirelessly energetic by coupling radiation energy and human

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BMEMat(BioMedical Engineering Materials) 2024年第2期2卷 4-6页

作者： Dan Zhou Zhenfang Zhang Yitong Li Tianyi Ma Haijun He Haoxuan Li College of Textile Science and Engineering Jiangnan UniversityWuxiChina School of Textile Science and Engineering Xi'an Polytechnic UniversityXi'anChina School of Science RMIT UniversityMelbourneAustralia

Smart wearable textilesintegrating micro/nano electronics into fibers/garments represent state-of-the-art wearable technology and show great potential applications in healthcare,smart city,intelligent robotics,etc.[1]To this end,wearable nanosensors,logic circuits,electronic skin,flexible batteries,etc.,are incorporated into fabrics to create stretchable and wearable e-textiles.

关键词： flexible electronics intelligent textiles smart fibers wearable device wireless transmission

Self-powered Internet of Things sensing node based on triboelectric nanogenerator for sustainable environmental monitoring

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Nano Research 2023年第9期16卷 11878-11884页

作者： Yuhan Qin Xianpeng Fu Yuan Lin Zheng Wang Jie Cao Chi Zhang School of Mechanical Engineering Guangxi UniversityNanning 530004China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang 212013China

The myriad sensing nodes in the Internet of Things(IoT)are mainly powered by battery,which has limited the lifespan and increased the maintenance ***,a self-powered IoT sensing node based on triboelectric nanogenerator(TENG)is proposed for the sustainable environmental *** wind powered TENG(W-TENG)is adopted in freestanding mode with the rabbit hair and six pairs of finger *** the energy management module,the weak electrical energy from WTENG can be converted into a stable direct current(DC)2.5 V voltage for the operation of the IoT sensing *** the storage energy exceeds 4.4 V,the node can be activated,then the microprogrammed control unit(MCU)transmits the monitoring ***,the monitoring data will be identified and relayed to the IoT cloud platform by narrowband IoT(NBIoT)*** a wind speed of 8.4 m/s,the node can realize the wireless monitoring and data transmission for temperature and atmosphere pressure every 30 *** work has provided a universal strategy for sustainable IoT sensing nodes powered by environmental micro-nano mechanical energy and exhibited potential applications in IoT,big data,and environmental monitoring.

关键词： triboelectric nanogenerator(TENG) Internet of Things(IoT) wind energy harvesting self-powered sensing node wireless transmission

Game Theoretical Secure wireless Communication for UAV-assisted Vehicular Internet of Things

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China Communications 2021年第7期18卷 147-157页

作者： Bo Liu Zhou Su Qichao Xu School of Mechatronic Engineering and Automation Shanghai UniversityShanghaiChina School of Cyber Security Xi’an Jiaotong UniversityXi’an 710049China

With the ever-expanding applications of vehicles and the development of wireless communication technology,the burgeoning unmanned aerial vehicle(UAV)assisted vehicular internet of things(UVIoTs)has emerged,where the ground vehicles can experience more efficient wireless services by employing UAVs as a temporary mobile base ***,due to the diversity of UAVs,there exist UAVs such as jammers to degenerate the performance of wireless communication between the normal UAVs and *** solve above the problem,in this paper,we propose a game based secure data transmission scheme in ***,we exploit the offensive and defensive game to model the interactions between the normal UAVs and ***,the strategy of the normal UAV is to determine whether to transmit data,while that of the jammer is whether to *** then formulate two optimization problems,i.e.,maximizing the both utilities of UAVs and ***,we exploit the backward induction method to analyze the proposed countermeasures and finally solve the optimal ***,the simulation results show that the proposed scheme can improve the wireless communication performance under the attacks of jammers compared with conventional schemes.

关键词： UAV-assisted vehicular internet of things(UVIoTs) jammers offensive and defensive game wireless transmission

Design of a search and rescue terminal based on the dual-mode satellite and CDMA network

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Science China(Physics,Mechanics & Astronomy) 2010年第12期53卷 2312-2314页

作者： ZHAO JunPing ZHANG Xuan ZHENG Bing ZHOU YuBin SONG Hao SONG Wei ZHANG MeiKui LIU TongZe ZHOU Li Institute of Medical Informatics General Hospital of PLABeijing 100853China Beijing Aerospace Science&Industry Century Satellite Hi-Tech Co.Ltd. Beijing 100070China Institute of Aviation Medicine Beijing 100842China

The current goal is to create a set of portable terminals with GPS/BD2 dual-mode satellite positioning, vital signs monitoring and wireless transmission functions. The terminal depends on an ARM processor to collect and combine data related to vital signs and GPS/BD2 location information, and sends the message to headquarters through the military CDMA network. It integrates multiple functions as a whole. The satellite positioning and wireless transmission capabilities are integrated into the motherboard, and the vital signs sensors used in the form of belts communicate with the board through Bluetooth. It can be adjusted according to the headquarters' instructions. This kind of device is of great practical significance for operations during disaster relief, search and rescue of the wounded in wartime, non-war military operations and other special circumstances.

关键词： GPS/BD2 dual-mode satellite positioning monitoring of vital signs wireless transmission

wireless Self-Powered Vibration Sensor System for Intelligent Spindle Monitoring

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Structural Durability & Health Monitoring 2023年第4期17卷 315-336页

作者： Lei Yu Hongjun Wang Yubin Yue Shucong Liu Xiangxiang Mao Fengshou Gu Intelligent Sensing and Control of High-End Equipment Beijing International Science and Technology Cooperation Base Beijing Information Science and Technology UniversityBeijing100192China Machinery Technology Development Co Ltd.Beijing100044China Centre for Efficiency and Performance Engineering University of HuddersfieldQueensgateHuddersfieldWest YorkshireHD1-3DHUK

In recent years,high-end equipment is widely used in industry and the accuracy requirements of the equipment have been risen year by *** the machining process,the high-end equipment failure may have a great impact on the product *** is necessary to monitor the status of equipment and to predict fault *** present,most of the condition monitoring devices for mechanical equipment have problems of large size,low precision and low energy utilization.A wireless self-powered intelligent spindle vibration acceleration sensor system based on piezoelectric energy harvesting is *** on rotor sensing technology,a sensor is made to mount on the tool holder and build the related ***,the energy management module collects the mechanical energy in the environment and converts the piezoelectric vibration energy into electric energy to provide 3.3 Vfor the subsequent *** lithium battery supplies the system with additional power and monitors’the power of the energy storage circuit in ***,a three-axis acceleration sensor is used to collect,analyze and filter a series of signal processing operations of the vibration signal in the *** signal is sent to the upper computer by wireless *** host computer outputs the corresponding X,Y,and Z channel waveforms and data under the condition of the spindle speed of 50∼2500 r/min with real-time *** KEIL5 platform is used to develop the system *** small-size piezoelectric vibration sensor with high-speed,high-energy utilization,high accuracy,and easy installation is used for spindle *** experiment results show that the sensor system is available and practical.

关键词： Condition monitoring self-powered vibration acceleration sensor piezoelectric energy harvesting wireless transmission

Data compression of displacement fields in digital image correlation by non-integer quantization

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Journal of Southeast University(English Edition) 2022年第1期38卷 42-48页

作者： Chen Wenwu Shao Xinxing He Xiaoyuan School of Civil Engineering Southeast UniversityNanjing 211189China

To solve the real-time transmission problem of displacement fields in digital image correlation,two compression coding algorithms based on a discrete cosine transform(DCT)and discrete wavelet transform(DWT)are *** on the Joint Photographic Experts Group(JPEG)and JPEG 2000 standards,new non-integer and integer quantizations are proposed in the quantization procedure of compression *** fields from real experiments were used to evaluate the compression ratio and computational time of the *** results show that the compression ratios of the DCT-based algorithm are mostly below 10%,which are much less than that of the DWT-based algorithm,and the computational speed is also significantly higher than that of the *** findings prove the algorithm s effectiveness in real-time displacement field wireless transmission.

关键词： digital image correlation wireless transmission displacement field compression encoding