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15th IEEE International Conference on Industry Applications, INDUSCON 2023

作者： Santos, Lucas Henrique Brito de Sousa Silva, Kaylane Lobato, Elen Priscila dos Santos, Jhennifer Freitas Manito, Allan R.A. da Silva Fonseca, Wellington de Oliveira e Silva, Marcelo Faculty of Electrical and Biomedical Engineering Federal University of Pará Belém Brazil Electrical Engineering Graduate Program Federal University of Pará Belém Brazil Mechanical Engineering Graduate Program Federal University of Pará Belém Brazil

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Coevolution of Myoelectric Hand Control under the Tactile Interaction among Fingers and Objects

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Cyborg and Bionic Systems 2022年第1期2022卷 285-302页

作者： Yuki Kuroda Yusuke Yamanoi Shunta Togo Yinlai Jiang Hiroshi Yokoi Joint Doctoral Program for Sustainability Research Graduate School of Informatics and Engineering The University of Electro-CommunicationsTokyoJapan Department of Mechan ical and Intelligent System Engineering Graduate School of Informatics and Engineering The University of Electro Communications TokyoJapan Center for Neuroscience and Biomedical Engineering The University of Electro Communications TokyoJapan Bejing Innovation Center for Inelligent Robots and Systems BeijingChina

The usability of a prosthetic hand difers significantly from that of a real ***,the complexity of manipulation increases as the number of degrees of freedom to be controlled increases,making manipulation with biological signals extremely *** overcome this problem,users need to select a grasping posture that is adaptive to the object and a stable grasping method that prevents the object from *** previous studies,these have been left to the operating skills of the user,which is extremely difficult to *** this study,we demonstrate how stable and adaptive grasping can be achieved according to the object regardless of the user's operation *** required grasping technique is achieved by determining the correlation bet ween the motor output and each sensor through the interaction between the prosthetic hand and the surrounding stimuli,such as myoelectricity,sense of touch,and grasping *** agents of the 16 DOF robot hand were trained with the myoelectric signals of six participants,including one child with a congenital forearm ***,each agent could open and close the hand in response to the myoeletric stimuli and could accomplish the object pickup *** the tasks,the agents successfully identified grasping patterns suitable for practical and stable positioning of the *** addition,the agents were able to pick up the object in a similar posture regardless of the partiipant,suggesting that the hand was optimized by evolutionary computation to a posture that prevents the object from being dropped.

关键词： robot Objects overcome

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Joint Coordination to Maintain Postural Balance Differs Between Preferred and Non-preferred Lower Limbs 9th

Joint Coordination to Maintain Postural Balance Differs Betw...

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9th Latin American Congress on biomedical engineering, CLAIB 2022 and 28th Brazilian Congress on biomedical engineering, CBEB 2022

作者： Rinaldin, C.D.P. Silva, V.A. Campos, D.P. Manffra, E.F. Pontifical Catholic University of Parana Graduate Program on Health Technology Rua Imaculada Conceição 1155 Curitiba Brazil Federal University of Technology Graduate Program in Biomedical Engineering Curitiba Brazil

ISBN: (纸本)9783031494062

The maintenance of postural balance depends on coordinated actions between the joints on both sides of the body. Although biomechanical modeling studies assume symmetry between the sides of the body in the control of postural balance, it is known that lateral preference makes the lower limbs functionally asymmetric in people without neurological impairment. However, it remains inconclusive whether the coordination between joint and segmental angles to maintain balance differs between the lower limbs according to lateral preference. The study investigated the coordination of joint and segmental angles for preferred (right) and non-preferred (left) lower limb movement for static and dynamic tasks during a single-legged postural task. Eighteen healthy young adults in single-legged upright posture were evaluated. The angular variability was assessed by analyzing the first eight principal components. The cross-correlation analysis between the main components and the angles examined showed that when the support on the ground was on the non-preferred lower limb, there was greater participation of the upper segments compared to the support of the preferred limb. The preferred support of the lower limb on the ground generated angular variability among the participants in the hip, knee, and ankle joints, that is, the most distal part of the body. There is a wide range of strategies for distributing the variability of the principal components between the original angles on the left side. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Degrees of freedom (mechanics)

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Monitoring industrial systems using ESP-NOW protocol with Mesh and Ad Hoc network 15

Monitoring industrial systems using ESP-NOW protocol with Me...

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15th IEEE International Conference on Industry Applications, INDUSCON 2023

作者： Santos, Lucas Henrique Brito da Silva, Eduardo José Monteiro de Oliveira Farias, Aleqssandro Alexandre dos Santos, Jhennifer Freitas Morais, Iago Ranieri Miranda Rodrigues da Silva Fonseca, Wellington de Oliveira e Silva, Marcelo Faculty of Electrical and Biomedical Engineering Federal University of Pará Belém Brazil Electrical Engineering Graduate Program Federal University of Pará Belém Brazil Mechanical Engineering Graduate Program Federal University of Pará Belém Brazil

ISBN: (纸本)9798350314182

Nowadays, industrial processes are creating increasing demands for optimized and efficient sensing systems and require high reliability and a short time interval for information delivery. This paper presents an embedded sensor system that uses the ESP-NOW protocol with a Mesh and Ad Hoc network, in order to provide an auto mesh configuration upon failure at some point in the network. This system was implemented to monitor the variables of an induction motor, after which, before sending the data to the cloud, local processing is performed to reduce the volume of data. Finally, a computer simulation of the WROOM-32 module is performed for a thermal analysis during its operation, where the heating points of the plate are identified and analyzed, in order to validate that the system, even processing a large amount of data, maintains a high reliability during its operation. ©2023 IEEE.

关键词： ad hoc espnow mesh simulation thermal

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Tuning the Size and Stiffness of Inflatable Particles

arXiv

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arXiv 2025年

作者： Pashine, Nidhi Wang, Dong Baines, Robert Goyal, Medha Shattuck, Mark D. O’Hern, Corey S. Kramer-Bottiglio, Rebecca Department of Mechanical Engineering Yale University New HavenCT06520 United States Department of Physics BioInspired Institute Syracuse University SyracuseNY13244 United States Department of Physics Benjamin Levich Institute City College of New York New York CityNY10031 United States Department of Physics Yale University New HavenCT06520 United States Department of Applied Physics Yale University New HavenCT06520 United States Graduate Program in Computational Biology & Biomedical Informatics Yale University New HavenCT06520 United States

We describe size-varying cylindrical particles made from silicone elastomers that can serve as building blocks for robotic granular materials. The particle size variation, which is achieved by inflation, gives rise to changes in stiffness under compression. We design and fabricate inflatable particles that can become stiffer or softer during inflation, depending on key parameters of the particle geometry, such as the ratio of the fillet radius to the wall thickness, r/t. We also conduct numerical simulations of the inflatable particles and show that they only soften during inflation when localization of large strains occurs in the regime r/t → 0. This work introduces novel particle systems with tunable size and stiffness that can be implemented in numerous soft robotic applications. © 2025, CC BY.

关键词： Stiffness

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Synthesis and characterization of a novel poly(amic acid)

Synthesis and characterization of a novel poly(amic acid)

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8th World Biomaterials Congress 2008, WBC 2008

作者： Padavan, Donna T. Wan, W.K. Biomedical Engineering Graduate Program University of Western Ontario London ON Canada Department of Chemical and Biochemical Engineering University of Western Ontario London ON Canada

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Control engineering investigation of the effects of proliferative diabetic retinopathy on the crystalline lens and ciliary muscle dynamic behavior

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Research on biomedical engineering 2023年第3期39卷 663-676页

作者： Oliveira, Rebeca Hannah de M. Silva, Mayla dos S. Nunes, Gustavo A. M. A. Faria, Rafael Mendes Santos, Kleriston Silva Rosa, Leandro L. F. Rosa, Mário F. F. Rosa, Suélia de S. R. F. Department of Biomedical Engineering Johns Hopkins University School of Medicine BaltimoreMD United States Postgraduate Program in Mechatronic Systems University of Brasília DF Brasilia Brazil Optometry Clinic GO Goiânia Brazil Biomedical Engineering Graduate Program University of Brasília DF Brasilia Brazil University of Brasilia – UnB DF Brasilia Brazil

Purpose: Proliferative diabetic retinopathy (PDR) affects more than 100 million adults worldwide and is one of the primary diseases leading to blindness and affecting the eye’s retina. Few papers mention its impact on the anterior segment of the eye. Methods: We present a novel bond graph model of the human eye calibrated with data from the literature to simulate the effects of retinopathy on lens behavior. Through mathematical representation in state space and transfer functions, we simulate the dynamic responses of the physiological and pathological systems. Results: The dynamic response to impulse inputs shows a distinct peak amplitude (0.01 difference) and transient time (0.0001 s) for PDR and Healthy systems at Region B (lens and ciliary muscle). Qualitative increase in ocular vasculature aggravation attenuates PDR dynamic response to unitary step input compared to Healthy (50% decay at 20 days of simulation) at Region B. Conclusions: The model suggests the potential impact of PDR on ciliary muscle behavior, which can have a clinical translation on diagnosis, follow-up, and treatment of the disease. It can be used for future studies on the effects of retinopathy on different ocular regions. © 2023, The Author(s), under exclusive licence to The Brazilian Society of biomedical engineering.

关键词： Eye protection

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IMPEDIMETRIC MEASUREMENT OF 3D ANGIOGENIC PROCESS 25

IMPEDIMETRIC MEASUREMENT OF 3D ANGIOGENIC PROCESS

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25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021

作者： Huang, Chun-Hao Lei, Kin Fong PhD Program in Biomedical Engineering College of Engineering Chang Gung University Taiwan Graduate Institute of Biomedical Engineering Chang Gung University Taiwan Department of Radiation Oncology Chang Gung Memorial Hospital Taiwan

ISBN: (纸本)9781733419031

In this research, a microfluidic biochip for impedance measurement was developed to explore the angiogenesis ability affected by VEGF in a 3D microenvironment. The process of angiogenesis and invasion of human umbilical vein endothelial cells (HUVEC) is studied by using microfluidic technology and bio colloids (Matrigel) to construct a 3D biological barrier. During angiogenesis affected by different concentrations of vascular endothelial growth factor (VEGF), the impedance changes and time points were recorded to analyze the angiogenesis ability. The results showed that the impedance measurement can quantify the angiogenesis ability in the microfluidic biochip in real-time. © 2021 MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.

关键词： Microfluidics

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Artificial neural network-based estimation of the eyeball position using the magnetic contact lens sensing technique

Artificial neural network-based estimation of the eyeball po...

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2005 27th Annual International Conference of the engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Lee, Seung Yup Kim, Keun Young Kim, Hee Chan Interdisciplinary Program-Biomedical Engineering Major Graduate School Seoul National University Seoul Korea Republic of Department of Biomedical Engineering College of Medicine Seoul National University Seoul Korea Republic of

ISBN: (纸本)0780387406

We have created an artificial neural network based approach for measuring eye movement using a magnetic contact lens sensing technique. The sensor array is based on using four magnetoresistive sensors. A two-layer feed-forward artificial neural network was used and an artificial eyeball model was made for the test. The neural network is trained with sample data obtained from nine spots. After training, we compared the position calculated from the developed system with the real one. The result shows that there is a good linear relationship between them. This indicates the developed system is capable of recording the position of the eyeball with a high degree of accuracy. © 2005 IEEE.

关键词： Contact lenses

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Biomaterials, Medical Devices and Tissue engineering: An Integrated Approach 1

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1000年

作者： Frederick H. Silver

ISBN: (数字)9789401107358

ISBN: (纸本)9780412412608;9789401043168

are then selected and must meet the general 'biocompatibility' require ments. Prototypes are built and tested to include biocompatibility evalua tions based on ASTM standard procedures. The device is validated for sterility and freedom from pyrogens before it can be tested on animals or humans. Medical devices are classified as class I, II or III depending on their invasiveness. Class I devices can be marketed by submitting notification to the FDA. Class II and III devices require either that they show equivalence to a device marketed prior to 1976 or that they receive pre-marketing approval. The time from device conception to FDA approval can range from months (class I device) to in excess of ten years (class III device). Therefore, much planning is necessary to pick the best regulatory approach. 2. Wound Dressings and Skin Replacement 2.1 Introduction Wounds to the skin are encountered every day. Minor skin wounds cause some pain, but these wounds will heal by themselves in time. Even though many minor wounds heal effectively without scarring in the absence of treatment, they heal more rapidly if they are kept clean and moist. Devices such as Band-Aids are used to assist in wound healing. For deeper wounds, a variety of wound dressings have been developed including cell cultured artificial skin. These materials are intended to promote healing of skin damaged or removed as a result of skin grafting, ulceration, burns, cancer excision or mechanical trauma.

关键词： biomedical engineering and Bioengineering Surgery Medical Biochemistry Characterization and Evaluation of Materials

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