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Sensors, Volume 23, Issue 13

July-1 2023 - 472 articles

Cover Story: Collaboration between a high-altitude platform (HAP) and several unmanned aerial vehicles (UAVs) is investigated for wireless communication networks. The aim is to maximize the total downlink throughput of the ground users by optimizing the three-dimensional (3D) UAV placement, and UAV–user and HAP–user associations. An optimization problem is formulated, and the proposed solutions include the following: exhaustive search for 3D UAV placement using either random-based or best-SNR-based UAV–user association, and a genetic algorithm-based joint 3D UAV placement and user association. The K-means algorithm is utilized to initialize the UAV placement and reduce the convergence times of the proposed solutions. It is shown that the HAP–UAV collaborative network achieves a higher total throughput compared to a scheme where a single HAP serves all users. View this paper
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Articles (472)

  • Article
  • Open Access
6 Citations
2,582 Views
14 Pages

A Fast Algorithm for Intra-Frame Versatile Video Coding Based on Edge Features

  • Shuai Zhao,
  • Xiwu Shang,
  • Guozhong Wang and
  • Haiwu Zhao

7 July 2023

Versatile Video Coding (VVC) introduces many new coding technologies, such as quadtree with nested multi-type tree (QTMT), which greatly improves the efficiency of VVC coding. However, its computational complexity is higher, which affects the applica...

  • Article
  • Open Access
4 Citations
3,732 Views
19 Pages

A Compact and Efficient Boost Converter in a 28 nm CMOS with 90 mV Self-Startup and Maximum Output Voltage Tracking ZCS for Thermoelectric Energy Harvesting

  • Muhammad Ali,
  • Seneke Chamith Chandrarathna,
  • Seong-Yeon Moon,
  • Mohammad Sami Jana,
  • Arooba Shafique,
  • Hamdi Qraiqea and
  • Jong-Wook Lee

7 July 2023

There are increasing demands for the Internet of Things (IoT), wearable electronics, and medical implants. Wearable devices provide various important daily applications by monitoring real-life human activities. They demand low-cost autonomous operati...

  • Essay
  • Open Access
5 Citations
2,621 Views
14 Pages

Monitoring and Analysis of the Collapse Process in Blasting Demolition of Tall Reinforced Concrete Chimneys

  • Xiaowu Huang,
  • Xianqi Xie,
  • Jinshan Sun,
  • Dongwang Zhong,
  • Yingkang Yao and
  • Shengwu Tu

7 July 2023

Aiming at the problem of displacement of collapse direction caused by the impact of the high-rise reinforced concrete chimney in the process of blasting demolition, combined with the monitoring methods such as high-speed photography observation, piez...

  • Article
  • Open Access
8 Citations
3,125 Views
17 Pages

7 July 2023

The corrugated board is a versatile and durable material that is widely used in the packaging industry. Its unique structure provides strength and cushioning, while its recyclability and bio-degradability make it an environmentally friendly option. T...

  • Article
  • Open Access
17 Citations
4,020 Views
18 Pages

A Wearable Multi-Sensor Array Enables the Recording of Heart Sounds in Homecare

  • Noemi Giordano,
  • Samanta Rosati,
  • Gabriella Balestra and
  • Marco Knaflitz

7 July 2023

The home monitoring of patients affected by chronic heart failure (CHF) is of key importance in preventing acute episodes. Nevertheless, no wearable technological solution exists to date. A possibility could be offered by Cardiac Time Intervals extra...

  • Article
  • Open Access
24 Citations
13,542 Views
25 Pages

Eye-Gaze Controlled Wheelchair Based on Deep Learning

  • Jun Xu,
  • Zuning Huang,
  • Liangyuan Liu,
  • Xinghua Li and
  • Kai Wei

7 July 2023

In this paper, we design a technologically intelligent wheelchair with eye-movement control for patients with ALS in a natural environment. The system consists of an electric wheelchair, a vision system, a two-dimensional robotic arm, and a main cont...

  • Article
  • Open Access
21 Citations
5,073 Views
14 Pages

Research on Road Scene Understanding of Autonomous Vehicles Based on Multi-Task Learning

  • Jinghua Guo,
  • Jingyao Wang,
  • Huinian Wang,
  • Baoping Xiao,
  • Zhifei He and
  • Lubin Li

7 July 2023

Road scene understanding is crucial to the safe driving of autonomous vehicles. Comprehensive road scene understanding requires a visual perception system to deal with a large number of tasks at the same time, which needs a perception model with a sm...

  • Article
  • Open Access
88 Citations
4,311 Views
20 Pages

7 July 2023

This research explores the application of an artificial intelligence (AI)-assisted approach to enhance the selectivity of microwave sensors used for liquid mixture sensing. We utilized a planar microwave sensor comprising two coupled rectangular comp...

  • Article
  • Open Access
8 Citations
3,883 Views
18 Pages

7 July 2023

The manufacturing of photovoltaic cells is a complex and intensive process involving the exposure of the cell surface to high temperature differentials and external pressure, which can lead to the development of surface defects, such as micro-cracks....

  • Review
  • Open Access
8 Citations
5,523 Views
38 Pages

Patent Review of Lower Limb Rehabilitation Robotic Systems by Sensors and Actuation Systems Used

  • Cristina Floriana Pană,
  • Dorin Popescu and
  • Virginia Maria Rădulescu

7 July 2023

Robotic systems for lower limb rehabilitation are essential for improving patients’ physical conditions in lower limb rehabilitation and assisting patients with various locomotor dysfunctions. These robotic systems mainly integrate sensors, act...

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Sensors - ISSN 1424-8220