Sensing beyond itself: Multi-functional use of ubiquitous signals towards wearable applications

Wang, Zihan; Li, Jiarong; Jin, Yuchao; Wang, Jiyu; Yang, Fang; Li, Gang; Ni, Xiaoyue; Ding, Wenbo

doi:10.1016/j.dsp.2021.103091

Cited by 20 publications

(10 citation statements)

References 89 publications

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“…The bottom graph has 5 ms/div, while the IMU unit respond synchronously every 1 ms. These five IMU responses are evident as the sample frame window (5). After completion of, in this case, three sample frames, the new synchronization packets are sent from the master unit to synchronize all the IMU units on a common time scale.…”

Section: Discussionmentioning

confidence: 99%

“…Before the acquisition is triggered, the remote devices are in "listening mode", while the master device switches the radio from idle to transmitting the synchronization packet (SYNC TX) (3). All the remote units receive the synchronization packet (SYNC RX) simultaneously, start the preconfigured delay timer, and acquire data from the inertial sensor (5). After the delay timer of the first remote device expires (delay 5 ms), the payload is transmitted (IMU 1 data TX).…”

Section: Imentioning

confidence: 99%

“…Wearable sensory technologies have the ability to provide real-world motion-analysis information, which allows mobility limitations such as reduced walking speed/endurance and reduced physical activity to be assessed and addressed in different environments [4][5][6][7]. Relevant research has been conducted mainly in laboratory or hospital settings over the past decade [8].…”

Section: Introductionmentioning

confidence: 99%

“…Figure 4 shows the main operations of the WSA setup (master and five remote IMU devices) in a single 10-ms sampling cycle(5). Before the acquisition is triggered, the remote devices are in "listening mode", while the master device switches the radio from idle to transmitting the synchronization packet (SYNC TX) (3).…”

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confidence: 99%

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Wearable Sensory Apparatus for Real-Time Feedback in Wearable Robotics

Munih¹,

Ivanić²,

Kamnik³

2021

Applied Sciences

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We describe the Wearable Sensory Apparatus (WSA) System, which has been implemented and verified in accordance with the relevant standards. It comprises the Inertial Measurement Units (IMUs), real-time wireless data transmission over Ultrawideband (UWB), a Master Unit and several IMU dongles forming the Wireless Body Area Network (WBAN). The WSA is designed for, but is not restricted to, wearable robots. The paper focuses on the topology of the communication network, the WSA hardware, and the organization of the WSA firmware. The experimental evaluation of the WSA incorporates the confirmation of the timing using the supply current WSA profile, measurements related to determining the less error prone position of the master device on the backpack, measurements of the quality of the data transfer in a real environment scenario, measurements in the presence of other microwave signals, and an example of raw IMU signals during human walking. Placement of the master device on the top of the backpack was found to be less error prone, with less than 0.02% packet loss for all the IMU devices placed on different body segments. The packet loss did not change significantly in public buildings or on the street. There was no impact of Wi-Fi bands on the WSA data transfer. The WSA hardware and firmware passed conformance testing in a certified lab. Most importantly, the WSA performed reliably in the laboratory and in clinical tests with exoskeletons and prostheses.

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Section: Discussionmentioning

confidence: 99%

Section: Imentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Wearable Sensory Apparatus for Real-Time Feedback in Wearable Robotics

Munih¹,

Ivanić²,

Kamnik³

2021

Applied Sciences

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“…As an essential part of the fast development Internet of Things (IoT), efficient and intuitive human machine interface (HMI) is becoming more and more significant [2] [1] [5] [15]. Among many approaches for users to send instructions to the machine, handwriting or touchcontrol is the most intuitive one for human's dexterous hands.…”

Section: Introductionmentioning

confidence: 99%

HTPad: Hexagon-fractal TENG Pad for Scalable Touch Control

Yang

Yin

Wang

et al. 2021

Adjunct Proceedings of the 2021 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of The

Self Cite

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The development of the human-machine interface (HMI) is endeavored to find effective approaches to interact with machines by applying emerging technologies. Triboelectric nanogenerator (TENG) can convert mechanical stimuli to electricity, which not only shows great potential in sensing but also is widely used in various HMI applications. This paper proposed a TENG-based hexagonfractal touchpad (HTPad) system using two channels to realize 18 sliding patterns from 3 different modes and a signal recognition module. A one-dimensional convolution neural network (1D CNN) model is proposed for the recognition of the sliding direction signal with 96.5% accuracy, and handwriting digit signals collected by the touchpad can be recognized with a modified model with 99% accuracy. The proposed TENG-based hexagon-fractal touchpad is easy to fabricate, scalable, and with high sensitivity. Furthermore, the recognition model can serve as a unified platform for different recog.nition tasks with little computational cost, which reveals great potential in HMI applications.

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Review on functionalized CNTs reinforced silicone rubber composites for potential wearable applications

Kumar,

Alam,

Park

2024

Polymer Composites

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Wearable technology refers to the devices that are integrated with textiles, or implanted in the body or plants for smart monitoring. Hence, this wearable technology has attracted tremendous attention from researchers globally due to its smart functions to be useful for mankind. The key target of this review is to examine the potential of rubber composite materials for such wearable devices. The rubber composites reviewed explore silicone rubber as a rubber matrix (SR). Another objective includes the use of multi‐walled carbon nanotubes (MWCNTs) in pristine and functionalization forms explored as reinforcing fillers. Moreover, prospects of CNT including their structure, properties, and types are explored both in pristine and functionalized state are reviewed. Following this, the mechanical, and electrical, properties of such composites are reviewed. The reported results show that the reinforcing properties are strongly improved by adding functional groups to CNT in rubber composite. These improvements in reinforcing properties are assisted by the functional groups like carboxyl (OH), carbonyl (CO), epoxy, and alkoxy (CO) on the surface of filler are useful. They assist in improving the filler‐rubber compatibility thereby improving filler dispersion and thus finally mechanical and electrical properties. Following this, such improved properties are explored for specific real‐time wearable technologies. This real‐time monitoring includes nursing plant pulse growth monitoring, health monitoring, and humidity sensors. The review further proposes that the functionalized CNTs can be useful for obtaining robust real‐time strain‐sensing monitoring. Moreover, it assists in obtaining sharp response time, strain sensitivity, and good stretchability. Finally, the prospects and challenges are explored discussing the real‐time monitoring of these sensors.Highlights Configurations for nursing plant growth and other monitoring parameters are reviewed. The properties of pristine and functionalized carbon nanotubes reinforced silicone rubber for wearable technology were reviewed. The mechanical, and electrical aspects of functionalized carbon nanotubes were comparatively reviewed. Applications such as wearable strain sensors, humidity sensors, and wearable plant pulse monitoring sensors were reported.

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Sensing beyond itself: Multi-functional use of ubiquitous signals towards wearable applications

Cited by 20 publications

References 89 publications

Wearable Sensory Apparatus for Real-Time Feedback in Wearable Robotics

Wearable Sensory Apparatus for Real-Time Feedback in Wearable Robotics

HTPad: Hexagon-fractal TENG Pad for Scalable Touch Control

Review on functionalized CNTs reinforced silicone rubber composites for potential wearable applications

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