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A Proactive Safety Architecture Based on Proximity Sensing for Enhanced Human-Robot Interaction in Tele-Homecare 远程家庭护理中基于接近感知的增强人机交互的主动安全架构
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-08 DOI: 10.1109/THMS.2025.3627542
Ruohan Wang;Ying Yang;Zhengjie Zhu;Honghao Lyu;Chen Li;Xiaoyan Huang;Xiao Yang;Lipeng Chen;Dashun Zhang;Haiteng Wu;Geng Yang
With the advancement of robot technologies, robot-assisted tele-homecare systems enter human living environments to provide homecare services. In such a context, physical human-robot contact becomes inevitable. Ensuring safety during human-robot interaction in home environments becomes a critical challenge. However, conventional methods mainly rely on creating a collision-free environment, which is insufficient for inevitable or even desirable human-robot contact. This article proposes a proactive safety architecture that smoothly switches between collision avoidance and contact reaction. To enable proactive sensing for homecare robots, a proximity sensor is customized with the abilities of approach and contact awareness. Based on the proximity sensing data, a proactive safety architecture is proposed to ensure continuous task execution while avoiding potential collisions. For inevitable contact, a pretouch and contact reaction strategy is designed to enable a seamless transition from proximity-sensing-based collision avoidance to contact reaction. Comparative experiments are conducted to validate the proactive safety architecture on a telerobotic system prototype. Compared with the three state-of-the-art approaches, the proposed strategy reduces contact force (by at least 35.21% along the primary collision direction) while maximizing motion-tracking performance. A user study is conducted to investigate the user experience. Feedback from 10 participants highlights positive evaluations of this system’s usability, indicating the feasibility of the proposed strategy in enhancing safety during human-robot interaction for the tele-homecare system.
随着机器人技术的进步,机器人辅助远程家庭护理系统进入人类生活环境,提供家庭护理服务。在这样的背景下,人与机器人的身体接触是不可避免的。确保家庭环境中人机交互的安全成为一个关键的挑战。然而,传统的方法主要依赖于创造一个无碰撞的环境,这对于不可避免的甚至理想的人机接触是不够的。本文提出了一种主动安全架构,可以在避免碰撞和接触反应之间顺利切换。为了使家庭护理机器人能够主动感知,定制了具有接近和接触感知能力的接近传感器。基于近距离感知数据,提出了一种主动安全架构,以保证任务的持续执行,同时避免潜在的碰撞。对于不可避免的接触,设计了一种预接触和接触反应策略,以实现从基于接近感的碰撞避免到接触反应的无缝过渡。在一个遥控机器人系统原型上进行了对比实验,验证了主动安全架构的有效性。与三种最先进的方法相比,该策略在最大限度地提高运动跟踪性能的同时,减少了接触力(沿主碰撞方向至少减少了35.21%)。用户研究是为了调查用户体验。来自10位参与者的反馈突出了该系统可用性的积极评价,表明所建议的策略在提高远程家庭护理系统人机交互过程中的安全性方面是可行的。
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引用次数: 0
Enhancing Terrain Recognition With a Transformer-Based Model: Integrating IMUs for Motion Intent Detection 用基于变压器的模型增强地形识别:运动意图检测集成imu
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-08 DOI: 10.1109/THMS.2025.3631855
Hui Chen;Zhuo Wang;Fangliang Yang;Xiangyang Wang;Chunjie Chen;Xinyu Wu
This study proposes a novel Transformer-based framework for identifying terrain transition states and recognizing steady-state terrains using data from inertial measurement units. Compared to traditional time series classification methods for transition states, our approach reframes the problem as a time series fitting and terrain change-point detection task, capturing the dynamic nature of human locomotion across varying terrains. Outdoor experiments demonstrate the model’s superior performance in both steady-state and transition detection, with enhanced interpretability. Specifically, steady-state identification achieves accuracies of 99.63% on normal terrain and 98.06% on complex terrain. Compared to traditional convolutional neural network-based approaches, our method improves terrain classification accuracy by 12.30% –37.67% under normal conditions and 12.34% –39.90% under complex conditions. Moreover, the normalized root mean square error for transition curve fitting is significantly reduced to 0.016 and 0.032 for normal and complex terrains, outperforming other models.
该研究提出了一种新的基于变压器的框架,用于识别地形过渡状态和使用惯性测量单元的数据识别稳态地形。与传统的过渡状态时间序列分类方法相比,我们的方法将问题重新定义为时间序列拟合和地形变化点检测任务,捕获人类在不同地形上运动的动态特性。室外实验表明,该模型在稳态和过渡检测方面都有较好的性能,可解释性增强。其中,稳态识别在正常地形下的准确率为99.63%,在复杂地形下的准确率为98.06%。与传统的基于卷积神经网络的方法相比,我们的方法在正常条件下的地形分类精度提高了12.30% ~ 37.67%,在复杂条件下提高了12.34% ~ 39.90%。此外,对于正常地形和复杂地形,过渡曲线拟合的归一化均方根误差显著降低至0.016和0.032,优于其他模型。
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引用次数: 0
Quantifying Manual Adjustment of Foot Placement Under a Fixed Robotic Trajectory in Lower Limb Exoskeletons 下肢外骨骼中固定机器人轨迹下足部位置的量化手动调整
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-08 DOI: 10.1109/THMS.2025.3634377
Xiruo Cheng;Justin Fong;Liuhua Peng;Ying Tan;Denny Oetomo
Controlling foot placement is a key challenge in the use of assistive lower limb exoskeletons designed for those with motor impairments. Due to the mechanical flexibility of exoskeletons, users can intentionally manipulate the resulting step length without alteration of the exoskeleton’s reference trajectory. This is generally achieved by manually applying wrench upon the exoskeleton and the ground using crutches. This work sought to investigate this mechanism as a deliberate means to control foot placement. Ten nondisabled participants were asked to pilot a user-balanced exoskeleton to target step lengths of 0.1 to 0.4 m, with the exoskeleton trajectory unchanged throughout the experiment. Performance was evaluated by mean absolute error (MAE) and standard deviation (SD) of resulting step lengths. To explore the degree that these results might apply to users with impairments, participants were asked to minimize leg muscle activations during the experiment. Simultaneously, surface electromyography (sEMG) data were collected and normalized between resting (0.0) and unassisted walking (1.0). Activations ranged between 0.014 and 2.853, and were used to categorize participants into High muscle activation (HMA) and Low muscle activation (LMA) groups. The LMA group (median MAE 0.026 m, SD 0.028 m) performed differently compared to the HMA group (median MAE 0.021 m, SD 0.021 m), however, most participants achieved acceptable performance across all target step lengths, compared to a 0.05 m guideline. The results confirm that step length can be controlled through exoskeleton users’ manual efforts. Whilst the range of adjustments may vary with device and user, this could facilitate simplified exoskeleton control strategies and an intuitive method of user control.
控制脚的位置是一个关键的挑战,在使用辅助下肢外骨骼设计为那些运动障碍。由于外骨骼的机械灵活性,用户可以有意地操纵产生的步长,而不改变外骨骼的参考轨迹。这通常是通过手动在外骨骼上应用扳手和使用拐杖的地面来实现的。这项工作旨在研究这种机制作为控制足部放置的蓄意手段。10名非残疾参与者被要求驾驶一个用户平衡的外骨骼,以达到0.1到0.4米的目标步长,在整个实验过程中外骨骼的轨迹保持不变。通过所得步长的平均绝对误差(MAE)和标准偏差(SD)来评估性能。为了探索这些结果在多大程度上适用于有障碍的用户,参与者被要求在实验中尽量减少腿部肌肉的激活。同时,收集表面肌电图(sEMG)数据,并在静息(0.0)和无辅助行走(1.0)之间归一化。激活范围在0.014到2.853之间,并用于将参与者分为高肌肉激活(HMA)组和低肌肉激活(LMA)组。LMA组(中位MAE 0.026 m, SD 0.028 m)的表现与HMA组(中位MAE 0.021 m, SD 0.021 m)不同,然而,与0.05 m的指导方针相比,大多数参与者在所有目标步长上都取得了可接受的表现。结果证实,步长可以通过外骨骼用户的手动努力来控制。虽然调整范围可能因设备和用户而异,但这可以促进简化外骨骼控制策略和直观的用户控制方法。
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引用次数: 0
2025 Index IEEE Transactions on Human-Machine Systems 2025索引IEEE人机系统学报
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-05 DOI: 10.1109/THMS.2025.3640886
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引用次数: 0
Applications of Neuromorphic/Event Camera in Robotics With Human in Loop: A Systematic Review, Datasets, and Challenges 神经形态/事件相机在人环机器人中的应用:系统回顾、数据集和挑战
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-03 DOI: 10.1109/THMS.2025.3628064
Muhammad Hamza Zafar;Syed Kumayl Raza Moosavi;Filippo Sanfilippo
The evolution of industrial robotics has advanced from isolated, caged systems through basic human–robot interaction (HRI) to sophisticated human–robot collaboration (HRC). However, conventional vision systems based on red, green, blue (RGB) cameras remain a significant limiting factor in realizing the full potential of collaborative automation. This comprehensive review examines the transformative role of event cameras in advancing HRC capabilities and addressing current limitations in industrial settings. Event cameras, with their microsecond-level temporal resolution and robust performance under challenging lighting conditions, offer substantial advantages over traditional RGB cameras that are constrained by fixed frame rates and ambient lighting dependencies. We present a systematic framework for leveraging event cameras to enhance the human state understanding in collaborative robotics, encompassing real-time detection of poses, gestures, facial expressions, and emotional states. This framework addresses fundamental challenges in workplace safety and collaborative efficiency while enabling more sophisticated and responsive HRC systems. Our review synthesizes recent research developments in event camera applications specific to HRC, providing a detailed comparative analysis of their advantages over conventional vision systems. We identify emerging opportunities and potential research directions for advancing event-based vision in industrial robotics. In addition, we examine integration challenges and propose strategies for implementing event camera technology in existing industrial infrastructure. This work contributes valuable insights into the future trajectory of adaptive and intuitive HRC systems, offering a roadmap for researchers and practitioners in the field of industrial automation.
工业机器人的发展已经从孤立的笼子系统,通过基本的人机交互(HRI)发展到复杂的人机协作(HRC)。然而,基于红、绿、蓝(RGB)相机的传统视觉系统仍然是实现协作自动化全部潜力的重要限制因素。这篇全面的综述探讨了事件相机在提高HRC能力和解决当前工业环境中的局限性方面的变革作用。事件相机具有微秒级的时间分辨率和在具有挑战性的照明条件下的强大性能,与受固定帧率和环境照明依赖限制的传统RGB相机相比,具有实质性的优势。我们提出了一个系统框架,用于利用事件相机来增强协作机器人中的人类状态理解,包括姿势、手势、面部表情和情绪状态的实时检测。该框架解决了工作场所安全和协作效率方面的基本挑战,同时实现了更复杂和响应更快的HRC系统。我们的综述综合了针对HRC的事件相机应用的最新研究进展,提供了其优于传统视觉系统的详细比较分析。我们确定了在工业机器人中推进基于事件的视觉的新机会和潜在的研究方向。此外,我们还研究了集成挑战,并提出了在现有工业基础设施中实施事件相机技术的策略。这项工作为自适应和直观的HRC系统的未来发展轨迹提供了有价值的见解,为工业自动化领域的研究人员和从业者提供了路线图。
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引用次数: 0
Operational and Biomechanical Evaluation of a Wrist Exoskeleton Prototype for Assisting Meat-Cutting Tasks 腕部外骨骼原型协助切肉任务的操作和生物力学评估
IF 4.4 3区 计算机科学 Q2 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2025-12-03 DOI: 10.1109/THMS.2025.3632876
Aurélie Tomezzoli;Mathieu Gréau;Charles Pontonnier
Although a growing number of exoskeletons have been developed for occupational applications, wrist exoskeletons remain relatively rare. However, in the meat processing industry, elbow and hand-wrist musculoskeletal disorders are particularly common. The aim of this article was to assess the potential effectiveness and risks of a 670 g wrist exoskeleton prototype designed to assist operators during meat-cutting tasks. Six professional butchers performed three standardized tasks reproducing meat-cutting gestures in foam, in three randomized experimental conditions: 1) without exoskeleton, 2) wearing the exoskeleton passive, with brakes off, and 3) using it with brakes activated, locked in a static position. Cutting forces were recorded using an instrumented table, joint angles using an optoelectronic motion capture system, muscle activity using surface electromyographic (EMG), and user experience was assessed using questionnaires. The cutting inaccuracy was defined as the area between the prescribed task and the actual cut on the foam surface. Joint torques were estimated by inverse dynamics with and without taking the exoskeleton’s mass into account, to isolate its effect. Linear mixed-effects statistical models were fitted. With the exoskeleton active during tasks, EMG activity was decreased of up to 18.7% (p < 0.01 to p < 0.001) in the wrist flexors and increased of up to 61.7% (not significant to p < 0.05) in the upper trapezius. Shoulder elevation joint torques were increased of up to 39.7% (p < 0.001), mainly due to the exoskeleton mass. The proposed multicriteria exoskeleton evaluation has provided guidance for following prototyping stages. Too heavy wrist exoskeletons could increase the risk of shoulder tendinitis for such tasks.
尽管越来越多的外骨骼已经被开发用于职业应用,手腕外骨骼仍然相对罕见。然而,在肉类加工业中,肘部和手腕部肌肉骨骼疾病尤为常见。本文的目的是评估670克腕部外骨骼原型的潜在有效性和风险,该原型旨在帮助操作员完成切肉任务。六名专业屠夫在三种随机实验条件下执行了三种标准化任务,在泡沫中再现切肉的手势:1)不带外骨骼,2)被动佩戴外骨骼,关闭刹车,3)在激活刹车的情况下使用它,锁定在静态位置。切削力用仪器记录仪记录,关节角度用光电运动捕捉系统记录,肌肉活动用表面肌电图(EMG)记录,用户体验用问卷评估。切割不精度定义为泡沫表面上规定任务与实际切割之间的区域。关节扭矩是通过逆动力学来估计的,有和没有考虑外骨骼的质量,以隔离其影响。拟合了线性混合效应统计模型。当外骨骼活动时,腕屈肌肌电活动减少高达18.7% (p < 0.01至p < 0.001),上斜方肌肌电活动增加高达61.7% (p < 0.05)。肩抬高关节扭矩增加了39.7% (p < 0.001),主要是由于外骨骼的质量。拟议的多标准外骨骼评估为后续原型阶段提供了指导。太重的腕部外骨骼会增加肩腱炎的风险。
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