柔性力学传感器及其基于神经网络算法的应用

柔性力学传感器作为可穿戴电子产品不可或缺的一部分,近年来受到了广泛关注,特别是在医疗健康、人机交互、电子皮肤和物联网等领域中的应用。为满足可穿戴设备的需求,柔性传感器在敏感材料、传感器结构设计和制备方法等方面进行了大量研究。同时,神经网络算法作为人工智能的分支,可以高效处理复杂数据,实现多传感器或多模态数据的分析处理,为柔性力学传感器在复杂环境中的应用提供了强大工具。综述了柔性应变和压力传感器及其基于神经网络算法的应用,详细讨论了应变传感器和压力传感器的传感机制和不同类型的传感器的具体应用,如压阻式、压容式、压电式和摩擦电式。神经网络算法显著提高了来自传感阵列以及复杂传感系统的大传感数据的处理效率,并且可以更好地显示感知信号与信息事件之间的关系。随着力学传感器和可穿戴设备的发展,传感器收集到的大量身体活动等生理信号数据集,可以有效训练神经网络算法,从而进一步增强可穿戴设备的性能。此外,还讨论了神经网络算法增强力学传感器在语音识别、手势识别、物体/材质识别和人机交互等方面的应用,并对基于神经网络算法的柔性力学传感器的发展进行了展望。     

导电水凝胶在柔性可拉伸传感领域中的应用

水凝胶是一种由亲水聚合物链组成的三维网络结构凝胶,在水中迅速溶胀后可以保持大量水分而不溶解,表现出与软组织类似的特质。近年来,随着可穿戴电子产品的流行,具备柔性可拉伸特性的电子器件正越来越受到人们广泛的关注。导电水凝胶作为导电性能良好的复合水凝胶材料,能很好地满足上述应用要求。介绍了当前导电水凝胶前沿的研究进展,总结了常见的导电水凝胶制备方法,重点阐述了导电水凝胶在柔性可拉伸传感器领域的应用研究,分析了导电水凝胶基传感器存在的不足。随着物联网(IOT)、智能终端、5G技术的迅速发展,功能性可穿戴电子器件的市场需求日渐攀升,导电水凝胶在柔性可拉伸传感领域应用前景广阔。     

光纤布拉格光栅传感器在岩土工程中的应用

光纤传感器作为一种线性的测试仪器,应用于岩土工程领域时,较传统传感器有更多的优越性和更加广泛的应用前景。介绍了光纤Bragg传感器的工作原理及应用,并通过混凝土试件的加载试验,对FBG应变传感器和电阻应变计量测混凝土的应变测量进行了比较。提出准分布式光纤光栅传感器在现场应用及实验室中将得到更加广泛的应用。     

光纤传感技术在矿井安全监测中的应用

简要介绍了光纤传感技术在矿井安全监控方面的应用优点,并对气体传感器、粉尘传感器和应力(应变)传感器的原理和关键技术进行了分析,同时对OTDR以及Bragg光栅等新技术进行了理论分析和应用研究,并在此基础上提出了光纤传感技术进一步应用需解决的几个关键问题。     

水凝胶基传感器电极的研究进展

水凝胶是凝胶分子在最佳条件下通过物理或化学交联而制备的亲水聚合物网络,因其具有强大的可调节机械性能、自愈能力、良好的生物相容性,被认为是一种极具应用前景的传感器材料。近年来,柔性可穿戴电子设备逐渐成为人机交互技术和人工智能领域的主要研究方向,水凝胶传感器因具有良好的性能且能够实现多种信号的监测及传输,从而得到广泛研究,促进了柔性可穿戴电子设备的发展。本文介绍了目前水凝胶基传感器电极的研究进展,总结了不同用途的水凝胶基传感器电极的发展历程,重点阐述了水凝胶基传感器的电极在柔性可拉伸传感器领域的应用研究,最后总结分析了目前水凝胶基传感器电极存在的不足,并对水凝胶基传感器及其电极的制备工艺作出了展望。     

振弦式应变传感器特性研究

振弦式应变传感器具有很多特点和优点,稳定性好,可靠性高,近年来被一些重大工程如核电站安全壳、煤矿井巷等所广泛选用。介绍了振弦式应变传感器基本原理,工作特征和使用选型。     

桩身内力测试应变盒的研制及应用

传感器的埋设成活率较低,是一直困扰着基桩检测人员在做桩身内力测试时的问题.详细介绍了一种应变盒的制作方法及该应变盒在基桩检测中的应用效果.该应变盒因其在埋设后传感器成活率、灵敏度高、使用经济、方便,制作简便,值得推广应用.     

光纤气体传感技术及其应用

介绍了光纤传感器的分类 ,包括传光型和传感型。光纤传感器的特点 ,包括抗电磁干扰、灵敏度高、重量轻、体积小等。介绍了光纤传感器的工作原理以及光纤气体传感器的应用。     

一种微型光纤光栅矿压传感器

为了满足煤矿生产安全对于埋入式矿压传感器的需要,针对目前光纤光栅式矿压传感器在结构及应用方面的局限性,提出并实现了一种适用于煤/岩层埋入、煤矿称重和液压支架等压力测量的光纤光栅矿压传感器。该传感器外形为圆柱形,内部采用菱形力传递结构,结合工形膜片将纵向分布的压力转换为膜片的横向应变而传递给光纤光栅的方法,传感器直径为30 mm,高度为10 mm。利用有限元分析方法,对传感器菱形力传递结构和工形膜片的应变情况进行了理论分析。对该传感器的特性进行了实验研究,该传感器具有很好的线性度和重复性,线性拟合度为0.997 5,量程为0~7.15 MPa,灵敏度为0.598 3 nm/MPa。该传感器可埋入煤、岩层用于压力测量,还可以用于替代其他各电子类压力传感器对煤矿压力进行精确测量,也可在其它领域推广应用。     

数字式智能化锚索预应力传感器的研究与设计

预应力传感器是锚固工程、预应力混凝土工程、预应力桥梁工程等领域进行监测、研究与试验必不可少的测量用传感器。在分析预应力传感器研究现状的基础上,详细介绍了数字式智能化锚索预应力传感器的工作原理、结构设计、计量检定结果、主要特点和应用情况。     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

Current situation and future trend of China rare earth luminescent material industry

<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth     

China rare earth market review

正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products     

2014 second batch of rare earth quota released

正~~