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From the Society 来自社会
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-10-01 DOI: 10.1109/mim.2023.10238366
R. Dyer
In November 2021, the IEEE Technical Activities Board (TAB) approved the establishment of the IEEE TAB Award for Society/Council Impact in Diversity, Equity, and Inclusion (DEI). This award is administered and given annually by the TAB Committee on Diversity and Inclusion and was given for the very first time in 2022.
2021年11月,IEEE技术活动委员会(TAB)批准设立IEEE TAB多样性、公平性和包容性社会/理事会影响奖(DEI)。该奖项由TAB多样性和包容性委员会每年管理和颁发,并于2022年首次颁发。
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引用次数: 0
Morphological Reconstruction for the Internal Structure of In-Situ SoilRock Mixture Through Ultrasonic Transmission Imaging Experiments 原位土石混合体内部结构的超声透射成像实验形态学重建
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217026
Huan Song, Xianjian Zou
Aiming at the problem of real-time visualization analysis of the internal structural morphological characteristics for in-situsoil-rock mixture, an experimental system for the ultrasonic transmission imaging analysis of soil-rock mixture was constructed, and a morphological reconstruction method of internal structures for the in-situ soil-rock mixture was proposed by using multiple ultrasonic profile images. The system device and its analysis method can obtain series of profile images of internal structures for insitu soil-rock mixture. First, the image processing method is used to analyze the characteristics of the imaging spots and the bright bands of the internal structure, and the feature map of the bright band in the image is obtained. Second, the ratio of pixel points in the non-zero region of bright spot band to whole pixel points in the feature map is obtained, and the ratio is taken as the pore space ratio of the dual structure in the soil-rock mixture. Last, the evaluation of pore space ratio and the reconstruction of boundary structure morphology inside the soil-rock mixture can be realized according to the feature map and the pore space ratio of light spot and bright band. This method effectively solves the real-time analysis and 3D reconstruction problems of soil-rock mixture structures when the simulation method is complicated and lacks the actual internal profile image or the measured structure data.
针对现场土石混合料内部结构形态特征的实时可视化分析问题,构建了土石混合料超声透射成像分析实验系统,提出了一种利用多幅超声剖面图像对原位土石混合料内部结构进行形态重建的方法。该系统装置及其分析方法可以获得一系列现场土石混合料内部结构的剖面图像。首先,利用图像处理方法分析成像点的特征和内部结构的亮带,得到图像中亮带的特征图。其次,获得亮点带非零区域的像素点与特征图中整个像素点的比率,并将该比率作为土石混合体中双重结构的孔隙空间比率。最后,根据特征图以及亮点和亮带的孔隙比,可以实现土石混合体内部孔隙比的评估和边界结构形态的重建。该方法有效地解决了模拟方法复杂且缺乏实际内部剖面图像或实测结构数据时,土石混合体结构的实时分析和三维重建问题。
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引用次数: 0
An Apparatus and Method for Measuring Sand Content Based on Near-Infrared Shortwave Scattering 一种基于近红外短波散射的含砂量测量装置和方法
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217024
Xianrui Li, Bin Xu, Xiaodong Zhang, Wen-Yao Ni
River suspended sediment content (sand content) is one of the most important hydrological parameters, and its measurement application in water resources is of great significance. In this paper, an online sand content measurement device is developed that is based on near-infrared short-wave scattering optical measurement at 850 nm wavelength to study the complex variation relationship between scattered light intensity and sand content. The sand content measurement method is obtained after several groups of experimental research, ensuring the sand content is in the range of 0–20 kg/m3, the relative error of measurement accuracy after calibration is less than 3.44%, and the uncertainty of $1.0148pm 0.0174 text{kg}/mathrm{m}^{3}$. The maximum relative error of field measurement accuracy is 9.84%, which meets the requirement of 10% set as a national standard. The research results have good application prospects in river and channel erosion control and automatic monitoring of water extraction for industry and agriculture.
河流悬沙含量(含沙量)是最重要的水文参数之一,其测量应用在水资源中具有重要意义。本文研制了一种基于850 nm波长近红外短波散射光学测量的在线含砂量测量装置,研究了散射光强度与含砂量之间的复杂变化关系。经多组实验研究,确定了含砂量测量方法,保证含砂量在0-20 kg/m3范围内,标定后测量精度的相对误差小于3.44%,不确定度为$1.0148pm 0.0174 text{kg}/ maththrm {m}^{3}$。现场测量精度的最大相对误差为9.84%,满足国家标准10%的要求。研究成果在工农业河道侵蚀控制和取水自动监测等方面具有良好的应用前景。
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引用次数: 0
Society Officers 社会人员
4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/mim.2023.10217049
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引用次数: 0
Development of Visual Sensors and Augmented Reality Based Smart Glasses for Enhancement of Business Sustainability and Wellbeing of the Aging Workforce 开发基于视觉传感器和增强现实的智能眼镜,以提高业务可持续性和老龄化劳动力的福祉
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217030
C. Spandonidis, Fotis Giannopoulos, Jerónimo Agulló, N. Tachos, Lars Frederiksen, Aarón Martín, Ramón González Carvajal
An active healthy workforce is a key determinant to sustainable economic and human development. As part of this ensemble, the aging workforce offers years of experience and wisdom to their workplaces, providing critical mentorship to younger workers or newly assigned employees. Among the most relevant chronic diseases hitting the aged person, visual ability is reducing at a rate of about 3% every year, threatening productivity and limiting the tasks they may be assigned. See Far smart glasses aim to develop a human-machine system that aids visually-impaired people, helping them to remain actively involved in professional life, sustain and renew their work and personal life-related skills, and support independent, active, healthy lifestyles. See Far glasses can enhance the user's vision by projecting an enhanced image of what the user sees within his/her field of view, counteracting several visual impairments that the user may experience and greatly improving his/her work performance. Such enhancements include image contrast and/or brightness modification, text and image magnification and more. The system is comprised of a pair of low-profile Augmented Reality (AR) lenses, a number of different sensors and Artificial Intelligence (AI) algorithms, and a powerful processing unit that drives the lenses, processes sensor data and runs AI algorithms.
一支积极健康的劳动力队伍是可持续经济和人类发展的关键决定因素。作为这一群体的一部分,老龄化的劳动力为他们的工作场所提供了多年的经验和智慧,为年轻员工或新分配的员工提供了重要的指导。在老年人最相关的慢性疾病中,视觉能力每年以约3%的速度下降,威胁到生产力,并限制了他们可能被分配的任务。See Far智能眼镜旨在开发一种人机系统,帮助视障人士积极参与职业生活,维持和更新他们的工作和个人生活相关技能,并支持独立、积极、健康的生活方式。See-Far眼镜可以通过投影用户在他/她的视野内看到的增强图像来增强用户的视力,抵消用户可能经历的几种视觉损伤,并大大提高他/她的工作表现。这样的增强包括图像对比度和/或亮度修改、文本和图像放大等等。该系统由一对低姿态增强现实(AR)镜头、多个不同的传感器和人工智能(AI)算法,以及一个强大的处理单元组成,该处理单元用于驱动镜头、处理传感器数据和运行AI算法。
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引用次数: 1
TC-01: Nondestructive Evaluation and Industrial Inspection (NDE&II) TC-01:无损评估和工业检验(NDE&II)
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/mim.2023.10217028
James A. Smith, H. Ramos
This short column is to remind IEEE Instrumentation & Measurement Magazine readers about the technical and industrial opportunities offered by Technical Committee-01. The Nondestructive Evaluation and Industrial Inspection (NDE&II) technical committee was formed in 2018 to address the needs of the NDE community of the IEEE Instrumentation and Measurement Society (IMS). The NDE&II TC is designed to engage and cross-pollinate the technical and industrial communities. The resulting interactions will lead to technical innovations that solve industrial applications.
这个简短的专栏是为了提醒IEEE仪器与测量杂志的读者关于技术委员会-01提供的技术和工业机会。无损评估和工业检测(NDE&II)技术委员会成立于2018年,旨在满足IEEE仪器与测量学会(IMS)无损检测社区的需求。NDE&II TC旨在参与技术和工业社区并进行交叉授粉。由此产生的互动将导致解决工业应用的技术创新。
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引用次数: 0
Research on Single-Frequency PPP-B2b Time Transfer 单频PPP-B2b时间传递研究
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217029
Zaimin He, Lan Li, Runzhi Zhang, Juan Hou, Gongwei Xiao, Wei Guang, Jihai Zhang, Xiangyi He
Time transfer based on global navigation satellite system (GNSS) using precise point positioning (PPP) is a critical technique in universal time coordinated (UTC) calculation. PPP relies on precise satellite orbit and satellite clock offset products obtained through network solutions. Since August 2020, the Beidou global navigation satellite system (BDS-3) has provided GNSS users with the PPP product using PPP-B2b signal through three geostationary earth orbit (GEO) satellites instead of a network in the Asia-Pacific area. Network interruption will cause PPP reconvergence and terminate the time transfer, which hinders the application of PPP time transfer. The real-time PPP-B2b product broadcast by GEO satellites can be considered to solve the problem of interruption caused by network fluctuation in the field of real-time PPP. To promote the application of real-time PPP time comparison in UTC calculation and develop PPP-B2b application in time transfer, single-frequency (SF) PPP-B2b time transfer is investigated. Meanwhile, the treatment of ionospheric delay of SF PPP-B2b is crucial, and a GRAPHIC SF PPP-B2b model is proposed and validated in order to keep PPP-B2b network-independent. Data from two international atomic time (TAI) time-keeping laboratories and two international GNSS service (IGS) stations were used to analyze the accuracy in SF time comparison applications using the PPP-B2b product from common clock difference (CCD) and long-baseline time links. Results show that the SF PPP-B2b CCD sequences can be concentrated within 0.2 ns. The long-baseline time difference between SF time transfer using PPP-B2b product and dual-frequency (DF) time transfer using the final product fluctuated within 2 ns. In addition, the standard deviation (STD) values of PPP-B2b time comparison are mainly distributed at 0.5 ns. Meanwhile, only BDS and $text{BDS}+text{GPS}$ can achieve similar SF PPP-B2b time transfer accuracy.
基于全球导航卫星系统(GNSS)的精确点定位(PPP)时间传递是世界时间协调(UTC)计算中的一项关键技术。PPP依赖于通过网络解决方案获得的精确卫星轨道和卫星时钟偏移产品。自2020年8月以来,北斗全球导航卫星系统(BDS-3)通过三颗地球静止轨道卫星(GEO)而不是亚太地区的网络,向全球导航卫星网用户提供了使用PPP-B2b信号的PPP产品。网络中断会导致PPP重新聚合并终止时间转移,从而阻碍PPP时间转移的应用。GEO卫星实时广播的PPP-B2b产品可以考虑解决实时PPP领域因网络波动而造成的中断问题。为了促进实时PPP时间比较在UTC计算中的应用,并发展PPP-B2b在时间传递中的应用。同时,SF PPP-B2b电离层延迟的处理至关重要,为了保持PPP-B2b网络的独立性,提出并验证了GRAPHIC SF PPP-B2b模型。使用来自两个国际原子时(TAI)计时实验室和两个国际全球导航卫星系统服务(IGS)站的数据,使用来自通用时钟差(CCD)和长基线时间链路的PPP-B2b产品,分析SF时间比较应用的准确性。结果表明,SF-PPP-B2b CCD序列可以在0.2ns内集中。使用PPP-B2b产品的SF时间转移和使用最终产品的双频(DF)时间转移之间的长基线时间差在2ns内波动。此外,PPP-B2b时间比较的标准偏差(STD)值主要分布在0.5ns处。同时,只有BDS和$text{BDS}+text{GPS}$可以实现类似的SF PPP-B2b时间传递精度。
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引用次数: 0
Improvement of the Standard Test Method for Effective Series Resistance (ESR) and Capacitance of Ultra High-Q Capacitors at High Frequencies 高频超高q电容有效串联电阻(ESR)和电容标准试验方法的改进
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217027
F. Rodes, X. Hochart
Ultra high-Q ceramic chip capacitors exhibit quality factors (Q) higher than 1000. The Resonant Coaxial-Line, manufactured by Boonton [1], has enough resolution for measuring such High-Q factors. As a result, in 1982, the resonant coaxial-line method was standardized by the American Society for Testing and Materials (ASTM) that issued the: “Standard Test Method for Effective Series Resistance (ESR) and Capacitance of Multilayer Ceramic Capacitors at High Frequencies” [2]. Applying this method, we found an error that concerns the measurement of a capacitor serially connected with a resonant coaxial-line and more particularly the frequency extrapolations that are mandatory for taking into account the skin effect [3]. Besides warning a user about an error, this paper is an opportunity to recall the principle of the resonant coaxial-line method and thereafter to present successively: the direct error free frequency extrapolation solution and the more complex procedure of the ASTM [2]. After comparison, the error that plagues the ASTM method is computed and is finally experimentally evaluated. Authors' note: In this paper, the symbols are identical to the ones specified by the ASTM [2].
超高Q陶瓷片电容器的品质因数(Q)高于1000。Boonton[1]制造的谐振同轴线具有足够的分辨率来测量这种高Q因子。因此,1982年,谐振同轴线法被美国材料试验协会(ASTM)标准化,该协会发布了“多层陶瓷电容器高频有效串联电阻(ESR)和电容的标准测试方法”[2]。应用这种方法,我们发现了一个与谐振同轴线串联的电容器的测量有关的误差,特别是考虑趋肤效应时必须进行的频率外推[3]。除了警告用户错误之外,本文还提供了一个机会来回顾谐振同轴线方法的原理,并随后依次介绍:直接无误差频率外推解决方案和ASTM[2]更复杂的程序。经过比较,计算了困扰ASTM方法的误差,并对其进行了实验评估。作者注:在本文中,符号与ASTM[2]规定的符号相同。
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引用次数: 0
Potential Use of State-of-the-Art TDCs for Particle Identification in Particle Physics Experiments 最先进的tdc在粒子物理实验中粒子识别的潜在应用
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217031
Moisés Arredondo-Velázquez, L. Rebolledo-Herrera, B. D. C. Alonso, E. Moreno-Barbosa
Time-to-Digital Converters (TDCs) are instruments used to measure time intervals from digital signals accurately. They play an essential role in areas such as Light Detection and Ranging (LiDAR), Positron Emission To-mography (PET) [1] and Particle Physics Experiments (PPE) [2]. Particularly, PPE involves the identification of particles resulting from collisions in accelerators. The estimation is carried out by measuring their Time of Flight (ToF) and deposited charge in the scintillator materials, becoming a radiation detector, as observed in Fig. 1.
时间-数字转换器(TDCs)是用于精确测量数字信号的时间间隔的仪器。它们在光探测和测距(LiDAR)、正电子发射成像(PET)[1]和粒子物理实验(PPE)[2]等领域发挥着重要作用。特别是,PPE涉及识别加速器中碰撞产生的粒子。通过测量它们的飞行时间(ToF)和闪烁体材料中沉积的电荷来进行估计,从而成为辐射探测器,如图所示。1。
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引用次数: 0
Basics of Industrial Metrology 工业计量基础
IF 2.1 4区 工程技术 Q2 Physics and Astronomy Pub Date : 2023-09-01 DOI: 10.1109/MIM.2023.10217023
D. Macii
As known, cyber-physical systems and ICT technologies in general are the backbone of the fourth industrial revolution (also known as Industry 4.0 in Europe). However, flexibility, efficiency, resilience and, above all, high-quality smart manufacturing could not be achieved without the essential contribution of measurement science. This is supposed to play a key role also for the development of value-centric, fully sustainable organizations envisioned in the forthcoming fifth industrial revolution. The most recent measurement techniques and technologies (e.g., networked and distributed measurement systems, advanced sensing solutions, machine-learning-based diagnostic solutions) supporting process and product monitoring in smart manufacturing companies are essential to reach specified quality targets and/or to ensure compliance with given technical, regulatory or legal requirements. Industrial metrology comprises all organizational and measurement procedures, techniques and technologies that contribute to reach the aforementioned goals, thus improving both customers' satisfaction and company competitiveness. In [1], Savio et al. highlight the strong economic benefits of industrial metrology in four different case studies. In particular, it turns out that, despite relevant initial investments, Internal Return Rates (RRs) ranging between 20% and 44% can be achieved with payback times shorter than three years. A pre-Brexit survey reports that UK companies using measurement standards are twice as likely to export goods compared with companies of the same size that instead make a marginal use of metrology within their processes, with an estimated impact on yearly turnover that ranges from 1.7% to 5.3% [2].
众所周知,网络物理系统和信息通信技术通常是第四次工业革命(在欧洲也被称为工业4.0)的支柱。然而,如果没有测量科学的重要贡献,灵活性、效率、弹性以及最重要的高质量智能制造是无法实现的。在即将到来的第五次工业革命中,这对于以价值为中心、完全可持续的组织的发展也应该发挥关键作用。智能制造公司中支持过程和产品监控的最新测量技术和技术(例如,网络化和分布式测量系统,先进的传感解决方案,基于机器学习的诊断解决方案)对于达到指定的质量目标和/或确保符合给定的技术,法规或法律要求至关重要。工业计量包括有助于实现上述目标的所有组织和测量程序、技术和技术,从而提高客户满意度和公司竞争力。在b[1]中,Savio等人在四个不同的案例研究中强调了工业计量的强大经济效益。特别是,事实证明,尽管有相关的初始投资,内部回报率(RRs)在20%到44%之间,投资回收期短于三年。英国脱欧前的一项调查报告称,使用计量标准的英国公司出口货物的可能性是同等规模的公司的两倍,而不是在其流程中边际使用计量,估计对年营业额的影响在1.7%到5.3%之间。
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引用次数: 0
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IEEE Instrumentation & Measurement Magazine
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