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A 232-1996-kS/s Robust Compressive Sensing Reconstruction Engine for Real-Time physiological Signals Monitoring

IEEE JOURNAL OF SOLID-STATE CIRCUITS 2019年第1期54卷 307-317页

作者： Chen, Ting-Sheng Kuo, Hung-Chi Wu, An-Yeu Natl Taiwan Univ Dept Elect Engn Taipei 106 Taiwan Natl Taiwan Univ Grad Inst Elect Engn Taipei 106 Taiwan

Compressive sensing (CS) techniques enable new reduced-complexity designs for sensor nodes and help reduce overall transmission power in wireless sensor network. However, for real-time physiological signals monitoring, the orthogonal matching pursuit that applied prior CS reconstruction chip designs is sensitive to measurement noise and suffers from a low convergence rate. In this paper, we present a robust 232-1996-kS/s CS reconstruction engine fabricated in 40-nm CMOS. With combination sparsity estimation (SE) and robust subspace pursuit (SP), more than 8-dB signal-to-noise ratio (SNR) gain is achieved under the same success rate for robust reconstruction. For hardware implementation, a flexible indices-updating VLSI architecture inspired by the gradient descent method can support arbitrary signal dimension of CS reconstruction without matrix decomposition. Parallel searching, indices bypassing, and processing elements (PEs) grouping are designed to reduce the total CS reconstruction cycle latency, thus enhancing the throughput rate by approximately 6.3 for CS reconstruction. The 8.66-mm CS reconstruction engine can provide real-time physiological signal reconstruction for data collected from CS-based wireless biosensors under noisy conditions, making low-power patient monitoring a reality.

关键词： biomedical signal processing compressed sensing multiple atom search reconfigurable architecture signal reconstruction

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Ultrasonic spectacle for visually impaired with dual alert feedback

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AIP conference Proceedings 2023年第1期2603卷

作者： A. Bhargavi Haripriya G. Anitha Vinithra Parthsarathy Department of Biomedical Engineering SRM Institute of Science and Technology Kattankulathur 603203 Tamil Nadu India

The research work carried was to conquer the travelling difficulty for the blind, this paper has been designed as a wearable spectacle with an obstacle detecting module in the front, ground, left and right, a processing unit with an output and a power supply are all included in this device. The obstacle detection module is made up of four ultrasonic sensor, a processing unit, a control module, and an output unit. By calculating the sensor and object, the distance will be detected and the output will be given as vibration and vocal message. The control unit controls the ultrasonic sensors, which gather information about the barrier in front, ground and sides of the blind individuals and process it before sending the output through the voice recognition as displayed through Bluetooth in Mobile App and vibration, accordingly. These Ultrasonic smart Glasses for the Blind are a portable gadget that is simple to use, low in weight, user-friendly. This spectacle might readily advise blind persons and assist them in avoiding potential hazards and to overcome their daily life problems.

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Considerations for Wearable sensors to Monitor Physical Performance During Spaceflight Intravehicular Activities

Considerations for Wearable Sensors to Monitor Physical Perf...

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Annual International conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Rachel Bellisle Caroline Bjune Dava Newman Harvard-MIT Health Sciences and Technology Massachusetts Institute of Technology Cambridge MA USA Charles Stark Draper Laboratory Inc. Cambridge MA USA Dept. of Aeronautics and Astronautics Harvard-MIT Health Sciences and Technology Cambridge MA USA

ISBN: (数字)9781728119908

ISBN: (纸本)9781728119915

Wearable sensors provide the capability to noninvasively monitor physiological parameters during spaceflight, including those related to physical performance and daily activity. Regular monitoring of general health and exercise capabilities in astronauts can ensure adequate performance levels and record health changes caused by the space environment. Relevant measurables include vital signs, cardiovascular health, and activity monitoring. Wearable sensor devices can be comfortable for long-term use and easy to operate, which is particularly important during more autonomous future planetary missions. Many devices are currently being developed and tested, but few wearable devices or integrated “smart” garments have been assigned for regular use on the International Space Station. The unique needs of the space environment must be considered to facilitate the development and implementation of wearable devices, particularly “smart” sensor garments, for space applications.

关键词： biomedical monitoring Monitoring Temperature measurement Temperature sensors Electrocardiography Wearable sensors Clothing

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An Unobtrusive Stress Recognition System for the smart Office 41

An Unobtrusive Stress Recognition System for the Smart Offic...

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41st Annual International conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Yu, Bin Zhang, Biyong An, Pengcheng xu, Lisheng xue, Mengru Hu, Jun Eindhoven Univ Technol Ind Design TU E NL-5612 AZ Eindhoven Netherlands Northeastern Univ Sino Dutch Biomed & Informat Engn Shenyang 110169 Peoples R China

ISBN: (纸本)9781538613115

This paper presents a novel approach to monitor office workers' behavioral patterns and heart rate variability. We integrated an EMFi sensor into a chair to measure the pressure changes caused by a user's body movements and heartbeat. Then, we employed machine learning methods to develop a classification model through which different work behaviors (body moving, typing, talking and browsing) could be recognized from the sensor data. Subsequently, we developed a BCG processing method to process the data recognized as 'browsing' and further calculate heart rate variability. The results show that the developed model achieved classification accuracies of up to 91% and the HRV could be calculated effectively with an average error of 5.77ms, By combining these behavioral and physiological measures, the proposed approach portrays work-related stress in a more comprehensive manner and could contribute an unobtrusive early stress detection system for future smart offices.

关键词： Heart rate variability Stress Heart beat Electrocardiography biomedical monitoring Wavelet transforms Feature extraction

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A Study on the Voice Security System Using sensor technology

A Study on the Voice Security System Using Sensor Technology

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International conference on Big Data and smart Computing (BIGCOMP)

作者： Ji-won Seong Hyo-jun Lee Si-heon Cho Department of industrial security governance Inha University Incheon Republic of Korea

ISBN: (数字)9781728160344

ISBN: (纸本)9781728160351

A person goes through a speaking and listening process that repeats verbal, physiological, and acoustic steps for communication. Voice recognition technology utilizing a range of sensor technologies using biosignals that are measurable in these human voice activities has developed rapidly in recent years. In particular, with the development of voice recognition technology based on artificial intelligence, the related market has expanded and is being released into various services. But the problem with voice recognition still exists and there are more cases of abuse. In addition, despite advances in technology, there is a problem where the associated services are not available to patients with laryngectomy or impaired pronunciation. Therefore, this paper focuses on silent recognition, which does not require vocalization, and introduces the technologies that may be used in implementing voice security systems in the future, including sensor technology, and further discusses the need to consider issues and support policies related to privacy when using the technology.

关键词： Speech recognition Feature extraction Tongue Biological system modeling Hidden Markov models Muscles Speech processing

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Finite Element Analysis of smart Structural Implications of a Beam-Type Artificial Basilar Membrane Inspired sensor 9

Finite Element Analysis of Smart Structural Implications of ...

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conference on Bioinspiration, Biomimetics, and Bioreplication Ix, held at SPIE smart Structures + Nondestructive Evaluation

作者： Saadatzi, Mohammadsadegh Saadatzi, Mohammad Nasser Tavaf, Vahid Banerjee, Sourav Univ South Carolina Dept Mech Engn Integrated Mat Assessment & Predict Simulat 300 Main St Columbia SC 29208 USA Univ Louisville Elect Engn Dept Louisville KY 40292 USA

ISBN: (数字)9781510625860

ISBN: (纸本)9781510625853;9781510625860

With developments in software and micro-measurement technology and finite element analysis software, a three-dimensional Basilar membrane finite element (BMFE) model can now be further straightforwardly created to investigate the physics and sound transfer function of basilar membrane. Numerous FE studies of the middle ear have been investigated to date, and each has its own specific advantages and shortcomings. In this conference paper, the latest PVDF-based development of the Basilar membrane and its FE modeling technology in both COMSOL Multiphysics and ANSYS software has been investigated and verified. The output responses versus the sound frequency is recorded and caparisoned.

关键词： Artificial Basilar Membrane smart Structures Acoustic vibration Mechanical Vibration Analysis Wave Propagation PVDF Material biomedical sensors

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Design of An Intelligent Wheelchair for Handicap People Conducting by Body Movement

Design of An Intelligent Wheelchair for Handicap People Cond...

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International conference on Computing and Networking technology (ICCNT)

作者： Mubdi-Ul Alam Sajid Md Firoz Mahmud Imteaz Rahaman Saquib Shahriar Mim Naz Rahman RUET Rajshahi University of Engineering & Technology Rajshahi Bangladesh

ISBN: (数字)9781728168517

ISBN: (纸本)9781728168524

The increasing development of the biomedical system and smart technology has a major impact on smart devices. A smart wheelchair is one of them to be improved with the blessings of this modern technology. In this paper, a smart wheelchair topology is proposed which is operated by a hand movement device and a smartphone. It comes with a lot of advanced features for people with disabilities who cannot walk or travel without the help of others. It is a hand-held wheelchair in which the gyro sensor and accelerometer are used and the Bluetooth phone control module is used to make it automatic. Users will wear a gesture system in their hands, and by moving the hand, the wheelchair will move forward, backward, left, and right. Arduino Mega and Arduino Nano are used as controllers. In this paper, the minimum threshold angle is compared with a microcontroller-based wheelchair where this proposed wheelchair started working with 5° fewer angles for forwarding and backward movement and 3° fewer angles for the left and right movement. Moreover, the linearity of this proposed wheelchair is -0.7, 0.045 & -0.03 when the sensitivity is 0.6102, 0.5214 & 0.55 for x, Y, Z axis respectively. The Sonar sensor is used here to prevent a safe movement. Using this design dimension and configuration, a prototype was eventually built and evaluated at various stages for performance evaluation.

关键词： Wheelchairs Robot sensing systems Bluetooth Sonar DC motors smart phones Prototypes

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A new mutual authentication and key agreement protocol in wireless body area network

A new mutual authentication and key agreement protocol in wi...

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IEEE International conference on smart Cloud (smartCloud)

作者： xiaohe Wu Jianbo xu Weihong Huang Wei Jian The School of Computer science and Engineering Hunan university of science and technology Xiangtan China

ISBN: (数字)9781728165479

ISBN: (纸本)9781728165486

Due to the mobility and openness of wireless body area networks (WBANs), the security of WBAN has been questioned by people. The patient's physiological information in WBAN is sensitive and confidential, which requires full consideration of user anonymity, untraceability, and data privacy protection in key agreement. Aiming at the shortcomings of Li et al.'s protocol in terms of anonymity and session unlinkability, forward/backward confidentiality, etc., a new anonymous mutual authentication and key agreement protocol was proposed on the basis of the protocol. This scheme only uses xOR and the one-way hash operations, which not only reduces communication consumption but also ensures security, and realizes a truly lightweight anonymous mutual authentication and key agreement protocol.

关键词： Authentication Wireless communication Protocols Body area networks Security biomedical monitoring Wireless sensor networks

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Education 4.0: smart Blended Learning Assisted by Artificial Intelligence, Biofeedback and sensors

Education 4.0: Smart Blended Learning Assisted by Artificial...

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International Symposium on Electronics and Telecommunications (ISETC)

作者： Monica Ioniță Ciolacu Paul Svasta Daniela Hartl Stefanie Görzen Faculty of Computer Science Deggendorf Institute of Technology (DIT) Germany Faculty of Electronic Telecommunications and Information Technology (CETTI) University Politehnica Bucharest Bucharest Romania

ISBN: (数字)9781728195131

ISBN: (纸本)9781728195148

The paper presents smart blended learning for fostering students' performance. It uses models of student activity and detects causes of a possible drop out, using learning analytics and real-time data. Taking advantage of embedded sensors (non-invasive, low-cost, flexible and distraction free) built into wearable devices real-time data can be used to support students' success, well-being and health. In our contribution to the research topic we evaluate the students' experience with smart blended learning using biofeedback methods, sensor data extracted from wearables for five specific lectures, during study periods and in examinations. The preliminary results indicate a correlation between the physiological signals and the grades in examination.

关键词： Heart rate sensors Education Wearable computers Intelligent sensors biomedical monitoring Wearable sensors

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Role of IOT in Healthcare using smart Textiles

Role of IOT in Healthcare using Smart Textiles

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International conference on Power, Energy, Control and Transmission Systems (ICPECTS)

作者： S. Karthikeyan T. Sankar M. Vijayakarthick T Ravi B. Rajasekar Sathyabama Institute of Science and Technology Chennai India VIT University Vellore India MIT Campus Anna university Chennai India

ISBN: (数字)9781728110844

ISBN: (纸本)9781728111018

The design and development of a ZigBee based mostly good non-invasive wearable health watching system with effective communication has been developed and reportable during this paper which incorporates GSM technology. Health care plays a vital role in human's life. Health care watching involves care and regular updates regarding the morbid. The ageing population can result in hyperbolic health care price as look after the senior is way dearer than that of different age teams. The physiological parameters square measure monitored victimization completely different devices like temperature sensor, EEG sensor, pulse device. sensors square measure connected to microcontroller so to digital display. ZigBee that is reliable supports sizable amount of nodes, with terribly long battery life and low price of this device can facilitate to lower the value of health watching each in home and hospital.

关键词： Temperature measurement Temperature sensors Sociology Zigbee Battery charge measurement biomedical monitoring Statistics

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