Article
Chemistry, Multidisciplinary
Joy Iong-Zong Chen, Hsin-Yu Lin
Summary: This paper presents an analysis of a quadcopter's stability and its sensors' data reading using an IMU (inertial measurement unit). The quadcopter's control was achieved by connecting a brushless DC motor to an Stm(& REG;) development board. A combination of barometric pressure and temperature sensors determined the altitude of the quadcopter. The PID (proportional-integral-derivative) controller and Simulink software were utilized for parameter adjustment and simulation, respectively, to ensure flight stability and improve remote machine module efficacy.
APPLIED SCIENCES-BASEL
(2023)
Article
Mathematics
Qian Zhang, Yifan Xu, Xueyun Wang, Zelong Yu, Tianyi Deng
Summary: This article presents an innovative method for online calibration of the pitot tube and estimation of wind field, with analysis of the observability of EKF and experimental validation showing the feasibility and effectiveness of the proposed approach.
Article
Engineering, Electrical & Electronic
Qingxi Zeng, Yu Jin, Haonan Yu, Xia You
Summary: This article proposes a localization system for UAV landing, which achieves accurate UAV landing by using ultra wideband anchors and inertial measurement unit data fusion. Experimental results demonstrate that the average RMSE of the proposed localization system in this article is reduced by 61% compared to traditional methods.
IEEE SENSORS JOURNAL
(2023)
Article
Computer Science, Information Systems
Chunhui Zhao, Bin Fan, Jinwen Hu, Quan Pan, Zhao Xu
Summary: This paper proposes a statistically optimized solution for the homography-based relative pose estimation problem, enabling least squares estimation of the pose between two views with known gravity direction and dominant ground plane. Additionally, an iterative estimation method for camera trajectory in visual odometry is developed. Experimental results demonstrate the accuracy and robustness of the proposed algorithm in indoor and outdoor environments, with various metrics confirming its effectiveness in practical applications.
SCIENCE CHINA-INFORMATION SCIENCES
(2021)
Article
Plant Sciences
Shanjun Luo, Xueqin Jiang, Kaili Yang, Yuanjin Li, Shenghui Fang
Summary: This study focuses on the application of unmanned aerial vehicle (UAV) multispectral remote sensing (RS) in precision agriculture. The researchers propose a new method for accurately acquiring the reflectance of multi-altitude images and compute vegetation indices to estimate rice growth parameters and yield. The results show significant differences in reflectance and vegetation indices at different altitudes, and the selection of a calibration method greatly affects the accuracy of rice phenotyping.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Engineering, Aerospace
Richard Hann, Tor Arne Johansen
Summary: This study investigates the effects of icing on unmanned aerial vehicles (UAVs) at low Reynolds numbers, specifically examining the impact of airspeed and chord length variations on ice accretion and aerodynamic performance degradation. The research shows that UAVs are more sensitive to icing conditions compared to larger and faster manned aircraft, with airspeed and chord length playing significant roles in ice thickness, area, limits and performance penalties. The findings highlight the differences between icing on manned and unmanned aircraft, emphasizing the importance of understanding how atmospheric conditions affect UAV operational envelope limitations.
AIRCRAFT ENGINEERING AND AEROSPACE TECHNOLOGY
(2021)
Article
Automation & Control Systems
Beiya Yang, Erfu Yang, Leijian Yu, Cong Niu
Summary: This article proposes a high-precision UAV positioning system that integrates the inertial measurement unit and ultrawideband technology with an adaptive extended Kalman filter to solve the issue of precise UAV positioning in extremely confined environments where the use of global positioning system is not possible.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Automation & Control Systems
Beiya Yang, Erfu Yang, Leijian Yu, Cong Niu
Summary: With increasing demand for unmanned aerial vehicle (UAV)-based autonomous inspections in the oil and gas industry, the challenging issue of 3-D UAV positioning due to satellite signal blocking is addressed in this article. The proposed ultrasonic- and inertial measurement unit (IMU)-based localization algorithm and low-cost UAV autonomous inspection system significantly improve the position update rate, accuracy, and stability. Extensive numerical results and field tests demonstrate the feasibility and performance of the algorithm and system in achieving high update rate, reliable, accurate, and precision UAV positioning in oil and gas pressure vessels.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Computer Science, Information Systems
Yi Zheng, Yaqin Xie, Jiamin Li
Summary: A fusion localization method based on multi-UAV collaborative ranging and user-side IMU module was proposed for disaster rescue. The method can maintain the accuracy and stability of localization in the presence of interference, reducing positioning error compared to commonly used methods.
Article
Engineering, Electrical & Electronic
Qingxi Zeng, Haonan Yu, Xufang Ji, Xiaodong Tao, Yixuan Hu
Summary: This paper presents a fast and robust monocular visual-inertial odometry (VIO) algorithm for autonomous navigation of unmanned aerial vehicles (UAVs). The algorithm utilizes a semidirect method for tracking and incorporates edgelet features and a quadtree-based feature extraction algorithm to enhance its robustness. In the back end, a sliding-window-based nonlinear optimization method is used for image and inertial information fusion. Experimental results demonstrate the algorithm's capability to operate in challenging scenarios and achieve comparable accuracy to state-of-the-art VIO algorithms while improving tracking speed.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
James Cabahug, Hossein Eslamiat
Summary: We propose an unmanned aerial vehicle (UAV) failure detection system using vibration data and the k-means clustering algorithm, showing its effectiveness and feasibility in detecting UAV failures during flight.
Article
Environmental Sciences
Brenon Diennevam Souza Barbosa, Gabriel Araujo e Silva Ferraz, Luana Mendes dos Santos, Lucas Santos Santana, Diego Bedin Marin, Giuseppe Rossi, Leonardo Conti
Summary: This study evaluated the potential of using UAVs and RGB vegetation indices in monitoring coffee crops, finding that MPRI and GLI showed some correlation with LAI, but the correlation was weak. Additionally, the use of these indices can help managers make timely crop management decisions and save resources.
Article
Engineering, Electrical & Electronic
Lukui Shi, Qingrui Zhang, Bin Pan, Jun Zhang, Yuanchao Su
Summary: Multiobject tracking in UAV scenes is a crucial task with numerous applications. The proposed global-local and occlusion awareness tracking network aims to improve tracking accuracy and robustness by incorporating global-local awareness and occlusion awareness data association.
IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
(2023)
Article
Computer Science, Information Systems
Hua Yan, Yunfei Chen, Shuang-Hua Yang
Summary: The translated passage highlights the importance of accurate and convenient energy consumption models for rotary-wing UAVs in communication designs. The author introduces a simple model with closed-form expression based on initial velocity, acceleration, and time duration, and analyses UAV flight control parameters using this model. Numerical results demonstrate the validity and reliability of the proposed model.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Quan Chen, Hai Zhu, Lei Yang, Xiaoqian Chen, Sofie Pollin, Evgenii Vinogradov
Summary: This article explores the synergies between vision and communications for edge-computing-enabled UAV flight, proposing a framework of edge computing assisted autonomous flight that utilizes three functionalities to enhance connectivity and mission performance. Simulation results demonstrate the effectiveness of the method in improving mission performance through enhanced connectivity.
IEEE COMMUNICATIONS MAGAZINE
(2021)
Article
Engineering, Electrical & Electronic
Kehao Feng, Zhenghua Zhang, Guohua Bai, Xiuyuan Fan, Rongzhi Zhao, Xuefeng Zhang
Summary: This paper proposes a new method to accurately evaluate the high-frequency power loss of soft magnetic materials. Through a two-step calibration, the system is able to compensate for the phase angle discrepancy between the exciting current and induced voltage, enabling a higher power loss measurement frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Mingfang Kang, Tong Liu, Hongmei Sun, Lin Li, Keliang Wang
Summary: In this study, the absorption performance of ambient nitrogenous toxic gases on a monolayer of blue phosphorus phase germanium selenide (GeSe) was investigated using density-functional theory calculations. The results showed that GeSe monolayer exhibits higher sensitivity and selectivity for the hazardous gas NO.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Yaqiong Niu, Zhicheng Zou, Longsheng Cheng, Chaofeng Ye
Summary: This paper proposes a novel method to stabilize the laser diode output using a close-loop control with two feedbacks. The proposed method performs better for long-time operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jiajie Li, Ying Liu, Zhen Chai, Qian Cao, Renjie Li, Yueyang Zhai
Summary: This study proposed an efficient and high-quality beam-splitting method based on a diffractive optical element, enabling multichannel SERF atomic magnetometers to achieve ultra-high consistency and sensitivity. It has significant applications in array biomagnetic measurement systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
E. Oliveira, C. Doering, H. Fouckhardt
Summary: With the development of Lab on a chip technology, fluid management using dispersed droplets has become an important approach. Electrowetting on dielectric (EWOD) is one method for droplet actuation, but it requires prior definition of droplet positions. Optoelectrowetting (OEW) goes further by allowing changes in electrical parameters through impinging light spots, without the need for predefined droplet positions. This study re-evaluates the key parameters of OEW and explores their effects on droplet actuation using numerical optimization methods.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Haipeng Wang, Zhiguo Wang, Gancheng Zhu, Shuai Zhang
Summary: A novel capacitive proximity skin was developed to improve the performance of robotics in handling liquid-filled containers. This skin features a flexible structure that can adapt to different grippers and seamlessly integrate with Robot Operating System. Experimental results demonstrated that this proximity skin achieved data-lossless detection and contactless measurement of liquid level, making it suitable for grasping operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Tsenguun Byambadorj, Xiangyu Zhao, Yutao Qin, Yogesh B. Gianchandani
Summary: In this research, a monolithically microfabricated Knudsen pump (KP) without suspended membranes was presented. These pumps offer improved mechanical robustness, wider process window, and simplified microfabrication process compared to previous designs. The experimental results matched the modeling results well, indicating the potential for monolithic integration onto complex lab-on-a-chip systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Hamed Karami, Saeed Karami Chemeh, Vahid Azizi, Hooman Sharifnasab, Jose Ramos, Mohammed Kamruzzaman
Summary: Aroma is a significant quality trait for pharmaceutical plants and their products, indicating the quality of the raw material. An electronic nose is an efficient approach for identifying and evaluating the aroma of essential oils. In this study, tarragon was dried at different temperatures and air velocities, and the purity of tarragon essential oil was evaluated using an electronic nose. Multivariate data analysis and artificial neural networks modeling were employed to quantify and classify the obtained essential oils.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Xiaoyang Duan, Dan Xu, Wenjun Jia, Ran Li, Bohao Sun, Ruitian Yan, Wenjie Zhao
Summary: Flower-like WO3/WS2 heterojunction materials constructed via a low-temperature in-situ oxidation method exhibit significant improvements in the detection of NO2 gas in gas sensors, along with good selectivity and reproducibility.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Peng Yu, Mengyang Zhang, Manqi You, Yuxi Gao, Landong Xiao, Yan Peng, Jingxia Lai, Zhouzhao Shi, Siwei Luo, Gencai Guo, Gang Guo
Summary: Recent studies have shown that two-dimensional Janus transition metal dichalcogenides (TMDs) have great potential for applications in gas sensors. By conducting first principles calculations, this study explores the potential application of Pd-doped monolayer HfSeS as gas sensor materials for detecting CO, CO2, NH3, and NO. The results demonstrate the good thermodynamical stability and reversible adsorption of these molecules on both pristine and Pd-doped HfSeS, with Pd-doped HfSeS showing higher sensitivity towards NO due to its metallic behavior upon NO adsorption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jinlan Yang, Linjiao Li, Jun Huang, Quan Zhang, Hiba Affane
Summary: This study proposes a method for large-scale aggregation of micro-particles by creating a vortex region using low-frequency oscillation. Experimental results show that this method can achieve a large aggregation area and has the advantages of low cost and low power consumption.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Jitendra Singh, Saurabh Kumar Gupta, Vinita
Summary: In this investigation, a Surface Acoustic Wave (SAW) formalin gas sensor was explored for low-level formalin gas sensing applications. The sensor showed stable response and high sensitivity to formalin gas concentration, making it a reliable and useful sensor for room temperature operations.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Junyao Wang, Yahao Liu, Huan Liu, Qi Hou, Jianxin Xu, Hongxu Pan, Jingran Quan, Yansong Chen, Hanbo Yang, Lixiang Li
Summary: A flexible electrode with a serpentine-shaped tetra-chiral structure was designed to improve the mechanical properties and prevent mechanical fracture of flexible electrodes. The research demonstrated that this structure reduced the maximum tensile stress by 87.19% compared to the existing tetra-chiral structure. The flexible electrode remained conductive even at a strain of 70% and showed resistance values of 5 ohm and 4.4 ohm at a bending angle of 180 degrees and after 1000 fold cycles. Furthermore, the flexible electrodes showed great potential in biological signal monitoring, particularly in collecting ECG and pulse signals.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Engineering, Electrical & Electronic
M. S. Sikandar Bathusha, Israr Ud Din, Rehan Umer, Kamran A. Khan
Summary: Graphene-based nanomaterials are used as embedded sensors to monitor fracture behavior in composite structures. This study investigates the in-situ crack propagation and fracture behavior in a glass fiber reinforced polymer composite using embedded reduced graphene oxide coated fabrics and highly conductive graphene nanoplatelet paper.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)