Measurement Sensors最新文献

英文中文

A 12-Lead ECG signal correlation analysis in multiple domains 多域12导联心电信号相关分析

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101417

Antonia Juskova, Ondrej Kovac, Jozef Kromka, Jan Saliga

This paper is devoted to correlation analysis of 12-lead electrocardiogram (ECG) signals, crucial for understanding cardiac function from multiple leads. Accurate synchronization via QRS detection facilitates the comparison of signals in time and discrete orthogonal transformation (DOT) domains. However, noise, muscle interference, and other signal distortions challenge QRS detection accuracy. We propose an enhanced method for Pan-Tomkin's detector, based on the statistical parameters of multi-lead ECG, to adjust QRS detections. This ensures a uniform number of QRS detections across all leads, resulting in synchronized correlation analysis. Correlation analysis, conducted on the Lobachewsky University ECG database, is evaluated in the time and sparse domains of discrete cosine transform and discrete wavelet transform. The study aims to reveal lead relationships in multiple domains, and their sparsity which can pave the way for usage of compression techniques.

本文致力于12导联心电图信号的相关分析，这对于了解多导联心功能至关重要。通过QRS检测实现精确的同步，方便了信号在时间和离散正交变换（DOT）域的比较。然而，噪声、肌肉干扰和其他信号失真对QRS检测的准确性提出了挑战。基于多导联心电图的统计参数，提出了一种改进的Pan-Tomkin检测器来调整QRS检测的方法。这确保了所有引线的QRS检测数量一致，从而实现同步的相关性分析。对Lobachewsky大学心电数据库进行了相关性分析，分别在离散余弦变换和离散小波变换的时间域和稀疏域进行了评价。该研究旨在揭示多个领域中的先导关系及其稀疏性，从而为压缩技术的使用铺平道路。

引用次数: 0

Realization of an ultra-stable audio frequency electrical power calibrator 一种超稳定音频电力校准器的实现

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101431

You Li , Wu Kang , Wang Shuqiang , Li Jingjing

The article introduce the design and implementation of an ultra-stable audio frequency electrical power calibrator, with voltage range up to 1 kV, current range up to 20A and frequency range from 20 Hz to 20 kHz. The 1 hour stability of its output power can reach to 25 ppm. It has good potential application for precision calibration of audio frequency power meters, energy meters, amplifiers and transducers.

本文介绍了一种电压范围为1kv、电流范围为20A、频率范围为20hz ~ 20khz的超稳定音频电力校准器的设计与实现。其输出功率1小时稳定性可达25ppm。它在音频功率表、电能表、放大器和换能器的精密校准中具有良好的应用前景。

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Digital twin design of a 5 degrees of freedom industrial robotic arm for engineering education purposes 工程教育用5自由度工业机械臂的数字孪生设计

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101323

Gyula Korsoveczki , Tamás Vasváry , Angéla Váradiné Szarka , Kornél Sarvajcz

The main contribution of this paper is to transfer a Mitsubishi RV-2AJ MELFA type industrial robot with 5 degrees of freedom into a virtual space using photogrammetry. The mesh model of the robot was realised in Meshroom software while for the assembly model we used Sold Edge 3D designer software based on reverse engineering principles. The accuracy to the digital twin was tested by comparing the trajectory of the TCP with the physical robot. Moreover, forward kinematic calculations in MATLAB environment were used to validate the model on mathematical way. The digital twin has the opportunity to receive sensor data and coordinates from the physical robot and can be integrated into digital laboratories emphasizing and demonstrating industrial 4.0 technologies in modern engineering education.

本文的主要贡献是利用摄影测量技术将三菱RV-2AJ MELFA型5自由度工业机器人转移到虚拟空间中。机器人的网格模型是在Meshroom软件中实现的，而装配模型我们使用了基于逆向工程原理的Sold Edge 3D设计软件。通过将TCP的轨迹与物理机器人的轨迹进行比较，验证了对数字孪生模型的准确性。通过MATLAB环境下的正运动学计算，从数学角度对模型进行了验证。数字孪生体有机会接收来自实体机器人的传感器数据和坐标，并可以集成到数字实验室中，在现代工程教育中强调和展示工业4.0技术。

引用次数: 0

Torque as key parameter for a better efficiency determination of electric motors and generators 转矩是确定电动机和发电机效率的关键参数

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101344

André Schäfer, Alexander Stock

In a soon to be net zero future, renewable energy generation, electric personal cars as well as commercial vehicles, aircrafts with battery-electric drive systems and ships with electric engines will soon dominate the landscape and because of the urgent need for conversion one day will determine our daily lives. The paper shows how to achieve a better efficiency determination of electric motors and generators by better cross-connection of mechanical and electrical side to further reduce the total measurement uncertainty.

在一个即将实现净零排放的未来，可再生能源发电、电动个人汽车和商用车辆、配备电池-电力驱动系统的飞机和配备电动发动机的船舶将很快占据主导地位，并且由于迫切需要转换，总有一天将决定我们的日常生活。本文介绍了如何通过机械和电气侧更好的交叉连接来实现电机和发电机的效率测定，从而进一步降低总测量不确定度。

引用次数: 0

Development of an optical force balance for low mass at LNE-CNAM LNE-CNAM低质量光学力天平的研制

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101362

Simon Noviant, Alain Vissière, Zaccaria Silvestri

The dissemination of the kilogram, spanning from the national prototype to sub-multiples ranging from 500 g to 100 μg, entails over 200 comparisons, resulting in heightened uncertainty propagation. To improve this issue, alternative realisations are imperative. Over recent years, LNE-CNAM has developed an instrument for absolute laser power measurement employing pressure radiation and pyrolytic graphite properties. Capitalising on these advancements a prototype of a novel balance has been devised for low-mass and force measurements within the 0.6 nN–100 nN range with a targeted relative standard uncertainty of 1 %. This balance exploits the diamagnetic attributes of pyrolytic graphite to levitate a pendulum, achieving high sensitivity with magnetic support. This traceability is ensured by a traceable optical balance developed at LNE-CNAM.

Preliminary assessments on the first balance version demonstrate a sensitivity of 9.3 μrad·nN⁻¹.

千克的传播，从国家原型到500克到100微克的子倍数，需要进行200多次比较，导致不确定性传播加剧。为了改善这一问题，必须有其他认识。近年来，LNE-CNAM开发了一种利用压力辐射和热解石墨特性测量绝对激光功率的仪器。利用这些进步，设计了一种新型天平的原型，用于0.6 nN - 100 nN范围内的低质量和力测量，目标相对标准不确定度为1%。这种天平利用热解石墨的抗磁性使钟摆悬浮，在磁性支撑下实现高灵敏度。这种可追溯性由LNE-CNAM开发的可追溯光学天平确保。对第一个平衡版本的初步评估表明灵敏度为9.3 μrad·nN−1。

引用次数: 0

Research on calibration parameters of hydraulic impulse tools 液压冲击工具标定参数的研究

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101388

Xiang Ren, Zhenyu Wang, Haibin Li, Xiaodong Li

This paper investigates the working principle of hydraulic impulse tools and, based on this principle and usage conditions, focuses on analysing the effects of air supply pressure, fastener torque rate, and extension rod on the tool's output torque. An experimental design was formulated to confirm the influence of these parameters on the tool's output torque. Based on the experimental data, it is recommended that these parameters be used as calibration standards for hydraulic impulse tools.

研究了液压冲击工具的工作原理，并在此原理和使用条件的基础上，重点分析了供气压力、扣件转矩速率和延伸杆对工具输出转矩的影响。制定了实验设计，以确定这些参数对工具输出扭矩的影响。根据实验数据，建议将这些参数作为液压冲击工具的标定标准。

引用次数: 0

Development of measurement system of chiseling motion using sensor fusion technology 基于传感器融合技术的凿凿运动测量系统的研制

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101340

Shota Kasai , Sinyoung Lee , Yoshiyuki Noda

This paper contributes to enhance realistic sensation of a surgical training simulator using virtual reality technologies. The surgical training simulator for operating hard tissues such as bones and teeth has been developed in recent years. For enhancing the realistic sensation of the simulator, it is required to measure and model the surgical manipulation. In this study, we propose the measurement system of the chiseling operation to the hard tissue. In the proposed approach, the posture and acceleration of the chisel are measured by an Inertia Measurement Unit (IMU) sensor and the displacement is measured by a Light Detection and Ranging (LiDAR) camera. The operating force to the chisel can be detected by the force sensor installed into the chisel. The chiseling motion can be estimated precisely by the sensor fusion technology in which the sensor data is integrated. The efficacy of the proposed measurement system is verified by the experiments.

利用虚拟现实技术增强外科训练模拟器的真实感。用于骨、牙等硬组织手术的外科训练模拟器是近年来发展起来的。为了增强模拟器的真实感，需要对手术操作过程进行测量和建模。在本研究中，我们提出了对硬组织进行凿凿的测量系统。在该方法中，通过惯性测量单元（IMU）传感器测量凿子的姿态和加速度，通过光探测和测距（LiDAR）相机测量其位移。对凿子的操作力可以通过安装在凿子上的力传感器来检测。将传感器数据集成到传感器融合技术中，可以精确估计凿凿运动。实验验证了该测量系统的有效性。

引用次数: 0

Optimised data synchronisation methods for continuous force calibration 优化的连续力校准数据同步方法

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101341

Jonas Sander , Rafael Soares Oliveira , Falk Ludwig Tegtmeier , Andy Knott

This paper explores optimised data synchronisation methods, particularly automated techniques, for continuous force calibration developed within the ComTraForce project. Through rigorous experimentation and analysis, the study demonstrates the efficacy of resampling and synchronisation methodologies in enhancing calibration precision. Results indicate significant improvements in accuracy and reliability, particularly in the context of continuous force calibration applications. Additionally, uncertainty analysis approaches are discussed to provide insights into synchronisation error assessment. The findings underscore the importance of advanced synchronisation methods in achieving reliable calibration outcomes in continuous force testing environments.

本文探讨了优化的数据同步方法，特别是自动化技术，用于ComTraForce项目中开发的连续力校准。通过严格的实验和分析，该研究证明了重采样和同步方法在提高校准精度方面的有效性。结果表明，精度和可靠性显著提高，特别是在连续力校准应用的背景下。此外，讨论了不确定性分析方法，以提供同步误差评估的见解。研究结果强调了在连续力测试环境中实现可靠校准结果的先进同步方法的重要性。

引用次数: 0

Improved dynamic bridge standard as universal tool for bridge amplifier characterisation and calibration 改进的动态电桥标准作为电桥放大器特性和校准的通用工具

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101342

M. Florian Beug, Harald Moser, Michael Hinz, Axel Kölling

This paper presents the improved dynamic PTB bridge standard which now generates fully symmetrical output signals. It can be used for dynamic bridge amplifier calibration according to ISO 4965–2 and operates with all combinations of dc and carrier frequency bridge supply voltages together with simulated measurement signals that can be static, dynamic, or a combination of both. Furthermore, it can be used for bridge amplifier linearity investigations due to its good inherent linearity. Consequently, it is a universal tool for most bridge amplifier investigations and calibrations, respectively.

本文提出了一种改进的动态PTB电桥标准，现在可以产生完全对称的输出信号。它可用于根据ISO 4965-2进行动态桥式放大器校准，并可在直流和载频桥式电源电压的所有组合以及静态，动态或两者组合的模拟测量信号下工作。此外，由于其良好的固有线性度，可用于桥式放大器的线性度调查。因此，它是大多数桥式放大器调查和校准的通用工具。

引用次数: 0

Micro torque calibration and measurement device for specialised electromagnetic components of inertial navigation system 惯性导航系统专用电磁元件微扭矩标定与测量装置

Q4 Engineering

Measurement Sensors

Pub Date : 2025-05-01 DOI: 10.1016/j.measen.2024.101385

Hongli Qi, Tao Li, Xianglong Ma, Shuoyuan Chang

The micro torque measurement and calibration technology is very important in the field of ships, aviation, and aerospace. Micro torque is one of the most important parameters of the key electromagnetic component of inertial navigation system, which is usually from the mN⋅m to μN·m. To measure its micro torque value, this paper introduces a standard torque device that can calibrate and measure the micro torque value of the electromagnetic components of inertial navigation systems. The device has a measurement range from 10⁻⁶ N·m to 10⁻⁴ N m, and a measurement uncertainty better than 1 % (k = 2). The device uses the micro-N·m torque calibration and measurement technology based on the flexure support, designs the ultra-thin, one-piece, and limit protection structure of the flexure support, realises the zero-stiffness support of the device, and solves the multi-degree-of-freedom torsional deformation problem of the flexure support, to make the micro-torque measurement range expand to 10⁻⁶ N m.

微扭矩测量与校准技术在船舶、航空、航天等领域具有重要的应用价值。微转矩是惯导系统关键电磁元件的重要参数之一，通常为mN⋅m ~ μN·m。为了测量其微转矩值，本文介绍了一种可对惯导系统电磁元件的微转矩值进行标定和测量的标准转矩装置。测量范围为10−6 N·m ~ 10−4 N·m，测量不确定度优于1% （k = 2）。该装置采用基于柔性支架的微N·m扭矩校准测量技术，设计了柔性支架的超薄、一体式、限位保护结构，实现了装置的零刚度支撑，解决了柔性支架的多自由度扭转变形问题，使微扭矩测量范围扩展到10 ~ 6 N·m。

引用次数: 0

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