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State-of-the-art and recent developments in micro/nanoscale pressure sensors for smart wearable devices and health monitoring systems 认领
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作者 Ye Chang Jingjing Zuo +1 位作者 Hainan Zhang Xuexin Duan 《纳米技术与精密工程(英文)》 EI CAS CSCD 2020年第1期43-52,共10页
Small-sized,low-cost,and high-sensitivity sensors are required for pressure-sensing applications because of their critical role in consumer electronics,automotive applications,and industrial environments.Thus,micro/na... Small-sized,low-cost,and high-sensitivity sensors are required for pressure-sensing applications because of their critical role in consumer electronics,automotive applications,and industrial environments.Thus,micro/nanoscale pressure sensors based on micro/nanofabrication and micro/nanoelectromechanical system technologies have emerged as a promising class of pressure sensors on account of their remarkable miniaturization and performance.These sensors have recently been developed to feature multifunctionality and applicability to novel scenarios,such as smart wearable devices and health monitoring systems.In this review,we summarize the major sensing principles used in micro/nanoscale pressure sensors and discuss recent progress in the development of four major categories of these sensors,namely,novel material-based,flexible,implantable,and selfpowered pressure sensors. 展开更多
关键词 M/NEMS Pressure SENSOR Flexible SENSOR PIEZORESISTIVE SENSOR Capacitive SENSOR Piezoelectric SENSOR RESONANT SENSOR 2D material
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Miniaturized electrochemical sensors and their point-of-care applications 认领
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作者 Wei Zhang Ruiguo Wang +2 位作者 Fang Luo Peilong Wang Zhenyu Lin 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第3期589-600,共12页
Most of the current analytical methods depend largely on laboratory-based analytical techniques that require expensive and bullky equipment,potentially incur costly testing,and involve lengthy detection processes.With... Most of the current analytical methods depend largely on laboratory-based analytical techniques that require expensive and bullky equipment,potentially incur costly testing,and involve lengthy detection processes.With increasing requirements for point-of-care testing(POCT),more attention has been paid to miniaturized analytical devices.Miniaturized electrochemical(MEC)sensors,including different material-based MEC sensors(such as DNA-,paper-,and screen electrode-based),have been in strong demand in analytical science due to their easy operation,portability,high sensitivity,as well as their short analysis time.They have been applied for the detection of trace amounts of target through measuring changes in electrochemical signal,such as current,voltage,potential,or impedance,due to the oxidation/reduction of chemical/biological molecules with the help of electrodes and electrochemical units.MEC sensors present great potential for the detection of targets including small organic molecules,metal ions,and biomolecules.In recent years,MEC sensors have been broadly applied to POCT in various fields,including health care,food safety,and environmental monitoring,owing to the excellent advantages of electrochemical(EC)technologies.This review summarized the state-of-the-art advancements on various types of MEC sensors and their applications in POCT.Furthermore,the future perspectives,opportunities,and challenges in this field are also discussed. 展开更多
关键词 MINIATURIZED ELECTROCHEMICAL sensors POINT-OF-CARE testing DNA-based MINIATURIZED ELECTROCHEMICAL SENSOR Paper-based ELECTROCHEMICAL SENSOR Microfluidics-based ELECTROCHEMICAL SENSOR MINIATURIZED capillary electrophoresis-based SENSOR
Ultrasensitive skin‐like wearable optical sensors based on glass micro/nanofibers 认领
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作者 Lei Zhang Jing Pan +12 位作者 Zhang Zhang Hao Wu Ni Yao Dawei Cai Yingxin Xu Jin Zhang Guofei Sun Liqiang Wang Weidong Geng Wenguang Jin Wei Fang Dawei Di Limin Tong 《光电进展(英文)》 2020年第3期18-24,共7页
Electronic skin,a class of wearable electronic sensors that mimic the functionalities of human skin,has made remarkable success in applications including health monitoring,human-machine interaction and electronic-biol... Electronic skin,a class of wearable electronic sensors that mimic the functionalities of human skin,has made remarkable success in applications including health monitoring,human-machine interaction and electronic-biological interfaces.While electronic skin continues to achieve higher sensitivity and faster response,its ultimate performance is fundamentally limited by the nature of low-frequency AC currents.Herein,highly sensitive skin-like wearable optical sensors are demonstrated by embedding glass micro/nanofibers(MNFs)in thin layers of polydimethylsiloxane(PDMS).Enabled by the transition from guided modes into radiation modes of the waveguiding MNFs upon external stimuli,the skin-like optical sensors show ultrahigh sensitivity(1870 k·Pa^-1),low detection limit(7 mPa)and fast response(10μs)for pressure sensing,significantly exceeding the performance metrics of state-of-the-art electronic skins.Electromagnetic interference(EMI)-free detection of high-frequency vibrations,wrist pulse and human voice are realized.Moreover,a five-sensor optical data glove and a 2×2-MNF tactile sensor are demonstrated.These initial results pave the way toward a new category of optical devices ranging from ultrasensitive wearable sensors to optical skins. 展开更多
关键词 optical micro/nanofiber pressure SENSOR TACTILE SENSOR WEARABLE SENSOR
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文章速递Polymer-derived SiBCN ceramic pressure sensor with excellent sensing performance 认领
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作者 Gang SHAO Junpeng JIANG +6 位作者 Mingjie JIANG Jie SU Wen LIU Hailong WANG Hongliang XU Hongxia LU Rui ZHANG 《先进陶瓷:英文版》 SCIE CSCD 2020年第3期374-379,共6页
Pressure measurement with excellent stability and long time durability is highly desired,especially at high temperature and harsh environments.A polymer-derived silicoboron carbonitride(SiBCN)ceramic pressure sensor w... Pressure measurement with excellent stability and long time durability is highly desired,especially at high temperature and harsh environments.A polymer-derived silicoboron carbonitride(SiBCN)ceramic pressure sensor with excellent stability,accuracy,and repeatability is designed based on the giant piezoresistivity of SiBCN ceramics.The SiBCN ceramic sensor was packaged in a stainless steel case and tested using half Wheatstone bridge with the uniaxial pressure up to 10 MPa.The SiBCN ceramic showed a remarkable piezoresistive effect with the gauge factor(K)as high as 5500.The output voltage of packed SiBCN ceramic sensor changes monotonically and smoothly versus external pressure.The as received SiBCN pressure sensor possesses features of short response time,excellent repeatability,stability,sensitivity,and accuracy.Taking the excellent high temperature thermo-mechanical properties of polymer-derived SiBCN ceramics(e.g.,high temperature stability,oxidation/corrosion resistance)into account,SiBCN ceramic sensor has significant potential for pressure measurement at high temperature and harsh environments. 展开更多
关键词 polymer-derived ceramics(PDCs) silicoboron carbonitride(SiBCN)ceramic pressure sensor piezoresistivity high termperature and harsh environment sensor
Progress in achieving high-performance piezoresistive and capacitiveflexible pressure sensors: A review 认领
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作者 Wufan Chen Xin Yan 《材料科学技术:英文版》 SCIE EI CAS CSCD 2020年第8期175-188,共14页
Electronic skin(e-skin) and flexible wearable devices are currently being developed with broad application prospects. Transforming electronic skin(e-skin) into true ¨skin¨is the ultimate goal. Tactile sensin... Electronic skin(e-skin) and flexible wearable devices are currently being developed with broad application prospects. Transforming electronic skin(e-skin) into true ¨skin¨is the ultimate goal. Tactile sensing is a fundamental function of skin and the development of high-performance flexible pressure sensors is necessary to realize thus. Many reports on flexible pressure sensors have been published in recent years,including numerous studies on improving sensor performance, and in particular, sensitivity. In addition,a number of studies have investigated self-healing materials, multifunctional sensing, and so on. Here,we review recent developments in flexible pressure sensors. First, working principles of flexible pressure sensors, including piezoresistivity, capacitance, and piezoelectricity, are introduced, as well as working mechanisms such as triboelectricity. Then studies on improving the performance of piezoresistive and capacitive flexible pressure sensors are discussed, in addition to other important aspects of this intriguing research field. Finally, we summarize future challenges in developing novel flexible pressure sensors. 展开更多
关键词 Electronic skin Flexible pressure sensor PIEZORESISTIVITY Capacitive pressure sensor
播种单体对地下压力测量方法和数学模型 认领 被引量:1
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作者 高原源 翟长远 +3 位作者 杨硕 赵学观 王秀 赵春江 《农业工程学报》 EI CAS CSCD 北大核心 2020年第5期1-9,共9页
对播种下压力实时测量是精准控制的基础,为了提高现有测量方法的通用性、准确性和稳定性,该研究在对播种下压力和播种深度关系模型分析基础上,采用轴销传感器播种下压力测量方法,进行了传感器力学分析和设计选型方法研究,并针对不同播... 对播种下压力实时测量是精准控制的基础,为了提高现有测量方法的通用性、准确性和稳定性,该研究在对播种下压力和播种深度关系模型分析基础上,采用轴销传感器播种下压力测量方法,进行了传感器力学分析和设计选型方法研究,并针对不同播深设定下单一测量模型误差大的问题,建立了融合播种深度因素的播种下压力测量修正模型,模型决定系数(R~2)为0.991 6,均方根误差(root mean square error,RMSE)为28.88 N,验证试验表明,不同播深设定下,模型预测误差绝对值最大为44.13 N,最大相对预测误差为3.28%,提高了播种下压力测量模型通用性和准确性。播种下压力田间动态变化分析试验结果表明,在4~8km/h车速下,播种下压力振荡主频幅值随车速增加而减小,且免耕处理下主频幅值和功率谱密度(powerspectraldensity,PSD)峰值均大于旋耕处理。不同车速和耕作方式下,播种下压力振荡主频变化较小,主要集中在0~1 Hz,为后续信号稳定输出的滤波处理提供依据。该研究结果可为播种下压力的精准控制奠定基础。 展开更多
关键词 机械化 传感器 播种机 播种下压力 播种深度 数学模型 轴销传感器
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NLDA non-linear regression model for preserving data privacy in wireless sensor networks 认领
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作者 A.L.Sreenivasulu P.Chenna Reddy 《数字通信与网络:英文版》 2020年第1期101-107,共7页
Recently,the application of Wireless Sensor Networks(WSNs)has been increasing rapidly.It requires privacy preserving data aggregation protocols to secure the data from compromises.Preserving privacy of the sensor data... Recently,the application of Wireless Sensor Networks(WSNs)has been increasing rapidly.It requires privacy preserving data aggregation protocols to secure the data from compromises.Preserving privacy of the sensor data is a challenging task.This paper presents a non-linear regression-based data aggregation protocol for preserving privacy of the sensor data.The proposed protocol uses non-linear regression functions to represent the sensor data collected from the sensor nodes.Instead of sending the complete data to the cluster head,the sensor nodes only send the coefficients of the non-linear function.This will reduce the communication overhead of the network.The data aggregation is performed on the masked coefficients and the sink node is able to retrieve the approximated results over the aggregated data.The analysis of experiment results shows that the proposed protocol is able to minimize communication overhead,enhance data aggregation accuracy,and preserve data privacy. 展开更多
关键词 SENSOR NODES DATA accuracy Wireless SENSOR networks DATA AGGREGATION PRIVACY PRESERVING
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Performance characterization of ionic-hydrogel based strain sensors 认领
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作者 XU HaiPeng SHEN ZeQun GU GuoYing 《中国科学:技术科学英文版》 SCIE EI CAS CSCD 2020年第6期923-930,共8页
Ionic hydrogels,owing to the advantages of stretchability,conductivity and transparency,have attracted more attention for developing new soft sensors and artificial skins.Existing works on ionic-hydrogel based sensors... Ionic hydrogels,owing to the advantages of stretchability,conductivity and transparency,have attracted more attention for developing new soft sensors and artificial skins.Existing works on ionic-hydrogel based sensors mostly focus on material synthesis,structure design and functional integration,while few studies investigate the characterization of their sensing performances.In this paper,we present a method to characterize the performance(e.g.,sensitivity,linearity and repeatability)of a kind of ionic-hydrogel based strain sensors by varying the testing frequencies and the sensors’geometry(e.g.,length-width(L/W)ratio).To this end,we first develop an experimental testing platform and fabricate a series of strain sensors made of the polyacrylamide(PAAm)hydrogel containing ionic conductive medium.We establish an equivalent electrical model to represent the ionic-hydrogel based strain sensors,indicating the influence of the testing frequencies and L/W ratio of the ionic hydrogels on their sensing performances.These theoretical predictions are in agreement with results obtained through experimental measurements.We further demonstrate that(1)the sensitivity of the strain sensors,characterized by the gauge factor(GF),increases with the rise of testing frequencies but tends to be stable over the frequency of 5 kHz;(2)the sensitivity GF has a nonlinear relation with the L/W ratio of the strain sensors,but with a certain maximum value under the same testing frequency when the L/W ratio equals to 4.80.We verify the above experimental observations with two commonly used electrolytes,including lithium chloride and sodium chloride.With the optimum testing frequency and L/W ratio,we finally conduct various experiments to demonstrate the low hysteresis and good repeatability of our ionic-hydrogel based strain sensors.This work provides an approach to characterize the performance of the ionic-hydrogel based strain sensors,which may be an important step forward in further applications of ionic hydrogels in soft robotics. 展开更多
关键词 ionic hydrogels sensor characterization large-strain sensor stretchable electronics
A bifunctional rhodamine derivative as chemosensor for recognizing Cu^2+ and Hg^2+ ions via different spectra 认领
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作者 Kaijie Wangc Qing Kong +3 位作者 Xiaoqiang Chen Juyoung Yoon K.M.K.Swamy Fang Wang 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第5期1087-1090,共4页
A new simple bifunctional chemosensor 1 based on rhodamine was synthesized by hydrazide and formylformic acid,which could detect Cu^2+and Hg^2+via dif ferent detecting methods in CH3 CN-HEPES buffer solution(20 mmol/L... A new simple bifunctional chemosensor 1 based on rhodamine was synthesized by hydrazide and formylformic acid,which could detect Cu^2+and Hg^2+via dif ferent detecting methods in CH3 CN-HEPES buffer solution(20 mmol/L,pH 7.4)(1:9,v/v)respectively.When sensor 1 bound with Cu^2+,it showed a colorimetric change,while a selective enhancement in fluorescence occurred upon 1 binding with Hg^2+,resulting from the spirolatam-ring opening process.The binding modes of 1 with Cu^2+and Hg^2+were investigated based on UV,fluorescence change,ESI-Mass and Job’s Plot data.Moreover,sensor 1 could selectively detect target ion in a mixed solution of Cu^2+and Hg^2+,and the two metal ions do not inte rfere with each other in the process of detecting Cu^2+or Hg^2+with 1. 展开更多
关键词 RHODAMINE Fluorescent sensor Colorimetric sensor Spirolatam-ring opening MERCURY Copper
文章速递微结构构筑方式对柔性传感器性能的影响 认领
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作者 吴大鸣 李哲 +5 位作者 黄尧 鲁元 杜宇 吴刚强 靳倩倩 高孔超 《塑料》 CAS CSCD 北大核心 2020年第4期16-19,24,共5页
设计了一种以聚二甲基硅氧炕/短切碳纤维(PDMS/SCF)复合材料为基材的柔性传感器,并通过在传感元件表面构筑的微结构阵列,实现了传感器的高灵敏度。通过模拟发现,V槽形微结构电阻对压力变化的响应性明显大于半球形微结构,并详细阐述了V... 设计了一种以聚二甲基硅氧炕/短切碳纤维(PDMS/SCF)复合材料为基材的柔性传感器,并通过在传感元件表面构筑的微结构阵列,实现了传感器的高灵敏度。通过模拟发现,V槽形微结构电阻对压力变化的响应性明显大于半球形微结构,并详细阐述了V槽形微结构阵列结构传感器的设计思路、结构特点、工作原理及制备流程。按照实验设计对PDMS薄膜传感器的性能等方面展开了系统的研究。测试结果表明,随着SCF含量的增加,传感器的灵敏度逐渐增加。当SCF含量为10%时,该V槽形微结构阵列柔性传感器的灵敏度为-0.72/kPa,比非结构化传感器的灵敏度高29倍,具有较高的可靠性,为柔性传感器提供了一种断的设计方案。 展开更多
关键词 传感器 微结构 PDMS 柔性 灵敏度
文章速递智能网联汽车2030:传感器大数据研究与趋势分析 认领
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作者 朱笛 刘苏 林军 《电子产品可靠性与环境试验》 2020年第S02期93-97,共5页
智能网联汽车将产生海量的传感器大数据,这些数据的传输和利用蕴藏着巨大的价值。阐述了智能网联汽车传感器大数据这一新的产业形态。从技术角度出发,首先,研究了2030年我国智能网联汽车的保有量;其次,分析了未来汽车传感器配置方案;然... 智能网联汽车将产生海量的传感器大数据,这些数据的传输和利用蕴藏着巨大的价值。阐述了智能网联汽车传感器大数据这一新的产业形态。从技术角度出发,首先,研究了2030年我国智能网联汽车的保有量;其次,分析了未来汽车传感器配置方案;然后,综述了传感器数据压缩技术的发展;最后,计算了单车和总体的数据规模并分析了可能的传输方式。结果表明在目前可用的压缩技术下,2030年每辆智能网联汽车每秒可产生8.6 MB数据,乐观地估计我国每年的传感器大数据总规模将达到1.084×1011GB。这些数据的价值将延伸到产业链内外,在传感器数据压缩技术、通信技术和隐私保护测评等方向催生出大量的商业机会。 展开更多
关键词 智能网联汽车 传感器 大数据 预测研究
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文章速递Bioelectronic protein nanowire sensors for ammonia detection 认领
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作者 Alexander F.Smith Xiaomeng Liu +5 位作者 Trevor L.Woodard Tianda Fu Todd Emrick Juan M.Jiménez Derek R.Lovley Jun Yao 《纳米研究:英文版》 SCIE EI CAS CSCD 2020年第5期1479-1484,共6页
Electronic sensors based on biomaterials can lead to novel green technologies that are low cost,renewable,and eco-friendly.Here we demonstrate bioelectronic ammonia sensors made from protein nanowires harvested from t... Electronic sensors based on biomaterials can lead to novel green technologies that are low cost,renewable,and eco-friendly.Here we demonstrate bioelectronic ammonia sensors made from protein nanowires harvested from the microorganism Geobacter sulfurreducens.The nanowire sensor responds to a broad range of ammonia concentrations(10 to 10^6 ppb),which covers the range relevant for industrial,environmental,and biomedical applications.The sensor also demonstrates high selectivity to ammonia compared to moisture and other common gases found in human breath.These results provide a proof-of-concept demonstration for developing protein nanowire based gas sensors for applications in industry,agriculture,environmental monitoring,and healthcare. 展开更多
关键词 nanowire protein nanowire biomaterial bioelectronics biosensor ammonia sensor
文章速递基于植物生理检测参数的温室环境控制研究进展 认领
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作者 李恺 魏晓明 何芬 《北方园艺》 CAS 北大核心 2020年第15期130-137,共8页
随着我国设施农业面积的不断扩大、温室栽培技术的不断提升,温室环境的智能化控制需求明显。传统温室生产完全依靠经验判断植物生长状况,标准无法统一,时效性过于随机,对人员体力经验要求很高,而植物生理检测可准确、实时地获取植物本... 随着我国设施农业面积的不断扩大、温室栽培技术的不断提升,温室环境的智能化控制需求明显。传统温室生产完全依靠经验判断植物生长状况,标准无法统一,时效性过于随机,对人员体力经验要求很高,而植物生理检测可准确、实时地获取植物本体信息,对于分析植物生长状况和对环境控制实现预指导等具有重要意义。通过对国内外大量参考文献进行分析发现,原位在线式的植物生理检测参数主要包含叶片厚度、叶片温度、茎直径、茎流4个方面。为此针对这4项参数分析和总结了国内外用以指导温室环境控制的研究情况,并提出了植物生理信息在智能化温室环境控制方面的前景及难点,以期为基于植物生理检测参数的温室环境控制研究提供参考依据。 展开更多
关键词 生理参数 检测 传感器 温室 环境控制
文章速递一种高压电缆及通道综合在线监测系统研究 认领
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作者 陈勇 王永君 +1 位作者 郝乾 周玉涛 《通信电源技术》 2020年第11期48-49,53,共3页
电缆的在线监测对监测装置有较高的精度要求,因此提出了一种高压电缆及通道综合在线监测系统。系统由传感器、信号采集单元和监控主机3部分组成,能实现对高压交流电缆的运行状态进行连续或周期的监测、分析与辅助诊断。针对监测系统的3... 电缆的在线监测对监测装置有较高的精度要求,因此提出了一种高压电缆及通道综合在线监测系统。系统由传感器、信号采集单元和监控主机3部分组成,能实现对高压交流电缆的运行状态进行连续或周期的监测、分析与辅助诊断。针对监测系统的3个部分,分别进行了详细的参数分析与功能介绍,并分析了监测系统的通信方式以及界面显示波形变化曲线。 展开更多
关键词 高压电缆 在线监测 传感器 信息采集单元 监控主机
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文章速递基于CoP纳米笼的高效无酶葡萄糖电化学传感器 认领
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作者 吕雪义 刘俊果 朱艳艳 《无机化学学报》 SCIE CAS CSCD 北大核心 2020年第9期1675-1682,共8页
采用水热法和煅烧结合的方法制备过渡金属磷化钴(CoP)纳米笼,并利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、扫描透射电子显微镜(STEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)表征CoP的形貌、结构和元素组成。研究发现,所合成的Co... 采用水热法和煅烧结合的方法制备过渡金属磷化钴(CoP)纳米笼,并利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、扫描透射电子显微镜(STEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)表征CoP的形貌、结构和元素组成。研究发现,所合成的CoP具有中空纳米笼的结构,该结构有利于提供更多可接触的催化活性位点,促进电子或离子的传输,加快催化反应过程。采用循环伏安法(CV)和计时电流法研究表明CoP纳米笼对葡萄糖具有优异的电催化氧化活性。基于CoP纳米笼修饰的玻碳电极构建的无酶葡萄糖电化学传感器显示出优异的性能。该传感器具有宽的线性范围(0.04~3 mmol·L^-1和3~8 mmol·L^-1)、低的检测限(3.8μmol·L^-1)和高的灵敏度,以及良好的选择性、重复性、重现性和稳定性。另外,该传感器能够实现人体血清中葡萄糖的快速检测。 展开更多
关键词 电化学 传感器 循环伏安法 CoP纳米笼 电催化活性 葡萄糖
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文章速递环境试验设备参数测量──温度传感器响应时间对测量结果的影响 认领
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作者 伍伟雄 周裕华 谢凯锋 《环境技术》 2020年第4期210-212,216,共4页
通过使用不同响应时间的温度传感器,测量温度箱工作空间内几何中心位置的温度波动度,确认温度传感器的响应时间对测量结果有显著的影响。提出在制订相关的环境试验设备国家标准、校准规范时,应考虑温度传感器响应时间的影响,并给出合理... 通过使用不同响应时间的温度传感器,测量温度箱工作空间内几何中心位置的温度波动度,确认温度传感器的响应时间对测量结果有显著的影响。提出在制订相关的环境试验设备国家标准、校准规范时,应考虑温度传感器响应时间的影响,并给出合理的响应时间范围等建议。 展开更多
关键词 设备 传感器 响应时间 波动度 实验
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文章速递基于总线的温度传感网络采集系统设计 认领
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作者 金忠 文海 +2 位作者 陈云锋 吴迪 周国芳 《国外电子测量技术》 2020年第7期99-103,共5页
针对小飞行器狭小空间多温度点高精度测量存在布线复杂和线缆过重的问题,设计了串联总线温度传感网络。温度测量点、中央采集单元和遥测单元均属于总线中的一个节点,该总线满足RS485电气规范。使用恒流源对Pt100进行激励,AD7711实现温... 针对小飞行器狭小空间多温度点高精度测量存在布线复杂和线缆过重的问题,设计了串联总线温度传感网络。温度测量点、中央采集单元和遥测单元均属于总线中的一个节点,该总线满足RS485电气规范。使用恒流源对Pt100进行激励,AD7711实现温度的高精度A/D转换,转换结果经由I2 C总线给MCU进行身份标识和时间标识。中央采集单元获取每个温度测量点的温度进行存储,并和遥测单元进行信息交换,打包各个被测点的温度信号给遥测单元。在不改变中央采集单元的情况下,可在总线上灵活的增减温度测量点。测试结果表明,温度测量节点精度在±0.6℃范围内。线缆重量是星形网络的2/n。 展开更多
关键词 总线 温度 传感 采集
文章速递基于Multisim的磁致伸缩传感器收发电路仿真 认领
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作者 胡志豪 刘曜 张宏伟 《科技创新导报》 2020年第19期18-20,共3页
磁致伸缩位移传感器利用磁致伸缩扭转波效应工作,广泛应用于石油、化工等易燃、易爆、易挥发、有腐蚀的场合。在磁致伸缩位移传感器设计过程中,脉冲信号产生电路和信号接收处理电路的准确性是提高传感器精度的关键。根据各部分电路的性... 磁致伸缩位移传感器利用磁致伸缩扭转波效应工作,广泛应用于石油、化工等易燃、易爆、易挥发、有腐蚀的场合。在磁致伸缩位移传感器设计过程中,脉冲信号产生电路和信号接收处理电路的准确性是提高传感器精度的关键。根据各部分电路的性能参数设计相应的电路并通过Multisim进行模拟仿真检验设计的电路是否满足设计要求,并运用于指导后续实物电路的搭建。 展开更多
关键词 磁致伸缩 Multisim仿真 模拟仿真 传感器
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文章速递共晶诱导增强的电化学发光9,10-二苯基蒽-苝微晶构建高效尿酸传感器 认领
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作者 廖妮 张捷源 +4 位作者 黄梓阳 赵晏汐 柴雅琴 袁若 卓颖 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2020年第9期1989-1995,共7页
采用表面活性剂辅助自组装方法,制得非共平面分子9,10-二苯基蒽(DPA)与平面型分子苝(Pe)形成的具有共晶诱导增强效应的电化学发光(ECL)新材料.DPA的引入不仅可以有效降低Pe分子因π-π作用聚集引起的聚集诱导猝灭(ACQ)效应,导致Pe分子的... 采用表面活性剂辅助自组装方法,制得非共平面分子9,10-二苯基蒽(DPA)与平面型分子苝(Pe)形成的具有共晶诱导增强效应的电化学发光(ECL)新材料.DPA的引入不仅可以有效降低Pe分子因π-π作用聚集引起的聚集诱导猝灭(ACQ)效应,导致Pe分子的ECL发射从二聚体或多聚体激发态(^1Pe^2*)转变为单体激发态(^1Pe*);还发挥了供体分子的作用,为受体分子Pe提供了有效的能量传递,进一步增强了ECL响应.将该共晶发光材料修饰到玻碳电极表面构建了新型ECL尿酸传感器,其对尿酸检测的线性范围为0.01μmol/L~5.0 mmol/L,检出限为4.0 nmol/L,具有良好的选择性和稳定性. 展开更多
关键词 共晶诱导增强电化学发光 9 10-二苯基蒽 尿酸 传感器
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文章速递可吞入无线电子设备发展现状及展望 认领
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作者 张耀平 王海燕 +4 位作者 冯洁 郝晋雍 王燕 齐晔 黄晓俊 《中国实用内科杂志》 CAS CSCD 北大核心 2020年第8期674-678,共5页
可吞入无线电子设备的历史最早可追溯到20世纪50年代,Bertil Jacobson和R.Stuart Mackay在1957年首次研发出了一种可监测胃肠道pH、压力和温度的可吞入电子设备[1]。在那之后,该方面的研究一直没有取得大的进展,直到1998年,以色列工程师... 可吞入无线电子设备的历史最早可追溯到20世纪50年代,Bertil Jacobson和R.Stuart Mackay在1957年首次研发出了一种可监测胃肠道pH、压力和温度的可吞入电子设备[1]。在那之后,该方面的研究一直没有取得大的进展,直到1998年,以色列工程师Gavriel Iddan研制出了一种内部嵌有镜头和光源的“胶囊”——PillCam,标志着可吞入无线电子设备进人了可视化时代[2]。 展开更多
关键词 可吞入无线电子设备 胶囊内镜 传感器
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