Qunfeng Niu

ORCID: 0009-0006-9132-1011
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Research Areas
  • Advanced Chemical Sensor Technologies
  • Biochemical Analysis and Sensing Techniques
  • Advanced Sensor and Control Systems
  • Advanced Algorithms and Applications
  • Analytical Chemistry and Chromatography
  • Spectroscopy and Chemometric Analyses
  • Industrial Vision Systems and Defect Detection
  • Biosensors and Analytical Detection
  • GABA and Rice Research
  • Advanced Neural Network Applications
  • Hybrid Renewable Energy Systems
  • Fault Detection and Control Systems
  • Image Processing and 3D Reconstruction
  • Wireless Power Transfer Systems
  • Indoor and Outdoor Localization Technologies
  • Advanced Computational Techniques and Applications
  • Optical Systems and Laser Technology
  • Transport Systems and Technology
  • Smart Agriculture and AI
  • E-commerce and Technology Innovations
  • Control Systems in Engineering
  • Hand Gesture Recognition Systems
  • Power Transformer Diagnostics and Insulation
  • Wood and Agarwood Research
  • Innovative Energy Harvesting Technologies

Henan University of Technology
2011-2025

The key to sEMG (surface electromyography)-based control of robotic hands is the utilization signals from affected hand amputees infer their motion intentions. With advancements in deep learning, researchers have successfully developed viable solutions for CNN (Convolutional Neural Network)-based gesture recognition. However, most studies primarily concentrated on utilizing data healthy subjects, often relying high-dimensional feature vectors obtained a substantial number electrodes. This...

10.1016/j.heliyon.2024.e26763 article EN cc-by-nc Heliyon 2024-02-21

Abstract How to effectively utilize renewable energy and improve the economic efficiency of microgrid system its ability consume has become one main problems facing China at present. In response this challenge, paper establishes a multiobjective capacity optimization model with minimum levelized cost energy, maximum proportion consumption, comprehensive cost. Based on model, new improved beluga whale algorithm is proposed solve problem in allocation process wind–solar–storage goal ensuring...

10.1002/ese3.1727 article EN cc-by Energy Science & Engineering 2024-06-01

Introduction The three dimensions of the tobacco silk components (cut stem, silk, reconstituted shred, and expanded silk) cigarettes directly affect cigarette combustibility; by accurately measuring different silks in cigarettes, it is possible to optimize combustibility reduce production harmful substances. Identifying shred a prerequisite for three-dimensional measurement. two-dimensional image method can identify measure its characteristics but cannot determine thickness. This study...

10.3389/fpls.2024.1508449 article EN cc-by Frontiers in Plant Science 2025-01-21

In order to accurately assess the fire risk of urban utility tunnels, an evaluation method based on improved cloud model and evidence theory is proposed. Firstly, index system for tunnels constructed from five aspects: prevention, control, emergency evacuation, personnel prevention safety management. Secondly, because randomness fuzziness assessment, with entropy optimization used calculate membership degree. The uncertainty focal elements are introduced satisfy basic probability assignment...

10.3390/app13042204 article EN cc-by Applied Sciences 2023-02-08

In this study, an application of a voltammetric electronic tongue for discrimination and prediction different varieties rice was investigated. Different pretreatment methods were selected, which subsequently used the unknown samples. To aim, array sensors based on metallic electrodes as sensing part. The samples analyzed by cyclic voltammetry with two sample-pretreatment methods. Discriminant Factorial Analysis to visualize categories samples; however, radial basis function (RBF) artificial...

10.3390/s150717767 article EN cc-by Sensors 2015-07-22

Grading dried shiitake mushrooms is an indispensable production step, as there are large quality differences between different grades, which affect the product's price and marketability. Dried mushroom samples have irregular shapes, small morphological grades of same species, they may occur in mixed causes challenges to automatic grade recognition using machine vision. In this study, a comprehensive method solve problem provided, including image acquisition, preprocessing, dataset creation,...

10.3389/fnut.2023.1247075 article EN cc-by Frontiers in Nutrition 2023-10-18

Peanut meal is the byproduct of high-temperature peanut oil extraction; it mainly composed proteins, which have complex tastes after enzymatic hydrolysis to free amino acids and small peptides. The method was adopted by using two compound proteases trypsin flavorzyme hydrolyze aiming provide a flavor base. Hence, necessary assess taste attributes assign definite scores double hydrolysates (DEH). Conventionally, sensory analysis used intensity in DEH. However, has disadvantages because...

10.3390/s150511169 article EN cc-by Sensors 2015-05-13

Introduction The classification of the four tobacco shred varieties, silk, cut stem, expanded and reconstituted shred, subsequent determination components, are primary tasks involved in calculating blending ratio. identification accuracy component area calculation error directly affect composition quality shred. However, tiny shreds have complex physical morphological characteristics; particular, there is substantial similarity between silk this complicates their classification. There must...

10.3389/fpls.2023.1108560 article EN cc-by Frontiers in Plant Science 2023-04-17

Detection of the four tobacco shred varieties and subsequent unbroken rate are primary tasks in cigarette inspection lines. It is especially critical to identify both single overlapped shreds at one time, that is, fast blended detection based on multiple targets. However, it difficult classify tiny with complex morphological characteristics, not mention classifying 24 types overlap, posing significant difficulties for machine vision-based multi-object calculation tasks. This study focuses...

10.3390/s23208380 article EN cc-by Sensors 2023-10-11

Parallel perforation around the cigarette splicing paper has been used for sensory quality adjustment and dilution of smoke. Particularly, different sizes depths can significantly affect tar content in mainstream Therefore, accurate detection parameters is crucial ensuring product reducing damage to human health before processing completion. However, tiny size morphologies perforations (e.g., are extremely similar interference points) pose a great challenge identification three-dimensional...

10.1109/jsen.2024.3399553 article EN IEEE Sensors Journal 2024-05-17

Abstract Integrated energy system (IES) is one of the ways to realize saving and emission reduction. Facing crisis fossil depletion challenge global warming, low‐carbon technology market economic guidance mechanism have an important impact on operation integrated (IES). In this study, IES with carbon capture utilization (CCU) established, model based life cycle theory built for input IES, ladder trading considered in economy establish optimization IESs. A combining power gas can effectively...

10.1002/ese3.1578 article EN cc-by Energy Science & Engineering 2023-10-10

Position determination is a critical technical challenge to be addressed in the unmanned and intelligent advancement of crane systems. Traditional positioning techniques, such as those based on magnetic grating or encoders, are limited measuring positions main carriage trolley. However, during operations, accurately determining position load becomes problematic when it undergoes swinging motions. To overcome this limitation, paper proposes novel Ultra-Wide-Band (UWB) method for systems,...

10.1371/journal.pone.0293618 article EN cc-by PLoS ONE 2023-11-01

The primary task in calculating the tobacco shred blending ratio is identifying four types: expanded silk, cut stem, and reconstituted shred. classification precision directly affects subsequent determination of components. However, types, especially silk have no apparent differences macro-scale characteristics. shreds small size irregular shape characteristics, creating significant challenges their recognition based on machine vision. This study provides a complete set solutions aimed at...

10.3389/fpls.2022.962664 article EN cc-by Frontiers in Plant Science 2022-08-18

The basic principle of wireless transantaneous energy transmission (TET) system for artificial heart is electromagnetic induction. A new type TET in which the electrical to primary coil circuit was supplied by a MEMS-based harvester instead an external battery proposed. spiral piezoelectric (SPEH) continuously converted mechanical from patient's walking or some other movement and then power circuit. Then detachable transformer designed provide implant. characteristics were calculated...

10.1109/cccm.2009.5268155 article EN 2009-08-01

The unique infinite self-renewal ability and multidirectional differentiation potential of stem cells provide a strong support for the clinical treatment. In light growing demands cell storage, how to ensure personal privacy security comply with strict ethical supervision requirements is particularly important. order solve problem low traditional encryption algorithm, we proposed double protection (DEP) algorithm bank data based on improved AES chaotic technology. Firstly, presented hash...

10.1371/journal.pone.0293418 article EN cc-by PLoS ONE 2023-10-25

A classification method of discriminate rice from different varieties with Volta metric electronic tongue based on square wave voltammetry is investigated. The samples are crushed and mixed distilled water to get the solution, solution should be stirred filtered before experiment. In order obtain electrochemical response signals extract characteristic value singles, which works respectively titanium (Ti) electrode tungsten (W) test sample under voltammetry. Principal Component Analysis (PCA)...

10.1109/mecs.2015.80 article EN MECS '15 Proceedings of the 2015 International Conference on Mechanical Engineering and Control Systems 2015-01-23

A novel working condition recognition system of screw compressor using wavelets for engineering application is proposed. According to tested rotor and valve vibration signal energy changing characteristic under different the compressor, fault position reason can be obtained clearly. The paper firstly power distribution on frequency bands wavelet packet transform divided method signal. each band, compressors obtained. Then, scale-wavelet spectrum flake was got with continuous transform....

10.1109/wcica.2008.4593506 article EN 2008-01-01

With the improvement of automation degree, more and platform is used to replace tedious manual measurement system. A kind networking liquid flow management control system based on .NET designed in paper. It's made up on-site level devices, operation monitoring devices remote devices. The implementation communication between instrument persional computer (PC) Visual Basic 2005 framework 2.0 dispatch or collect fixed quantity oil, store data database real time. It valuable for company achieve...

10.1109/bmei.2011.6098667 article EN 2011-10-01

Lateral flow immunoassay (LFIA) is extensively utilized for point-of-care testing due to its ease of operation, cost-effectiveness, and swift results. This study investigates the dynamics reaction mechanisms in LFIA by developing a three-dimensional model using Richards equation porous media transport, employing numerical simulations through finite element method. The delves into transport diffusion behaviors each component both sandwich competitive under non-uniform conditions....

10.3390/s24061989 article EN cc-by Sensors 2024-03-20

In recent years, magnetic nanoparticles (MNPs) have been widely used as a new material in biomedicine and other fields due to their broad versatility, the quantitative detection method of MNPs is significantly important its advantages immunoassay single-molecule detection. this study, device for detecting number based on weak signal were proposed machine learning methods applied design optimization device. Genetic Algorithm was optimize platform Simulated Annealing Neural Network explore...

10.3390/pr7080480 article EN Processes 2019-07-25

Linear cyclic voltammetry are adopted as excitation potentials to test 12 different varieties of edible oil by voltammetric electronic tongue-based structure three electrodes. Current response signals collected metal electrode sensor array. Principal component analysis (PCA) algorithm is used study the ability distinguish in tongue. There differences among abilities tongue for various under kinds scanning voltages excitation. The classification results better when works linear voltammetery.

10.1109/icinfa.2015.7279355 article EN 2015-08-01

In this paper, we propose a novel strategy to design reliable and practical constant selling oil automatic system,through the use of S7-226PLC, flow meter, inverter other hardware devices. A kind fuzzy PID control algorithm was researched guarantee system accuracy. The controller can output frequency by changing voltage self-tuning parameters (Kp, Ki, Kd), thus it controls pump speed achieve demanded accuracy oil. Finally, paper adopted C#.NET technology management software. software...

10.1109/wcica.2012.6358065 article EN 2012-07-01
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