The buildup of solid garbage in metropolitan areas is causing environmental contamination and may be harmful to human health if not adequately controlled. A sophisticated/intelligent waste management system is require...
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The paper is devoted to the initial stages of the developing of a system for computer monitoring of environmental physical and chemical parameters using computervision systems. The way of using specially designed QR ...
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The paper is devoted to the initial stages of the developing of a system for computer monitoring of environmental physical and chemical parameters using computervision systems. The way of using specially designed QR codes as optical identifiers for a set of sensors along with the white standard is shown. A number of materials have been considered for use as an optically active sensor environment for such monitoring system.
Early identification and detection of plant diseases is essential for preventing diseases during plant growth and is also the core of precise and intelligent management of crop diseases and insect pests. This paper fi...
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ISBN:
(数字)9798350352627
ISBN:
(纸本)9798350352634
Early identification and detection of plant diseases is essential for preventing diseases during plant growth and is also the core of precise and intelligent management of crop diseases and insect pests. This paper first introduces the plant disease type, plant disease data set and pretreatment technology, and then elaborates on the research status of deep learning identification and detection algorithm, and existing problems, finally points out that although deep learning in plant disease identification and detection shows great potential, but still face such as complex environment robustness, disease identification, data set deviation and diversity is the main challenge.
This paper focuses on the inverse optimal control problem for discrete-time systems with unknown cost functions using linear matrix inequalities (LMIs). Based on Pontryagin39;s minimum principle, a novel model-based...
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ISBN:
(数字)9798331529505
ISBN:
(纸本)9798331529512
This paper focuses on the inverse optimal control problem for discrete-time systems with unknown cost functions using linear matrix inequalities (LMIs). Based on Pontryagin's minimum principle, a novel model-based algorithm is proposed to reconstruct the weight matrices of an unknown quadratic cost function. This algorithm is formulated using LMIs to find a solution to the algebraic Riccati equation, which is then used to determine the weight matrices. We prove that the solution obtained from LMIs belongs to the set of solutions for the inverse optimal control problem. On this basis, a noniterative model-free algorithm is presented to solve the problem without requiring system matrices. The collected data is used to estimate the unknown weight matrices, and we prove that our algorithm can obtain an approximate optimal solution. Finally, an example illustrates the effectiveness of our algorithms, and comparisons show that our algorithms outperform others.
Photovoltaic cells play a critical role in solar power generation, with defects in these cells significantly impacting energy conversion efficiency. To address challenges in detecting defects of varying scales in sola...
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ISBN:
(数字)9798350352627
ISBN:
(纸本)9798350352634
Photovoltaic cells play a critical role in solar power generation, with defects in these cells significantly impacting energy conversion efficiency. To address challenges in detecting defects of varying scales in solar cells, an enhanced YOLOv5 algorithm is proposed. This algorithm integrates the Convolutional Block Attention Module (CBAM) to improve feature extraction, incorporates the Bi-directional Feature Pyramid Network (BiFPN) for refined feature fusion, and introduces the FasterNet architecture to enhance detection speed without sacrificing performance. Experimental results show a 1.6% increase in mean Average Precision (mAP) compared to the original network, and the effectiveness of the proposed method is further validated against mainstream models.
Supervisory control Theory (SCT) is a powerful framework to design a controller for a Discrete Event System (DES). However, several issues appear because of the different nature of SCT and synchronous-based systems, o...
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This paper aims to investigate the impact of spare parts management on system reliability in complex equipment systems, primarily focusing on two factors: the system39;s continuous operational duration and the total...
This paper aims to investigate the impact of spare parts management on system reliability in complex equipment systems, primarily focusing on two factors: the system's continuous operational duration and the total cost associated with spare parts storage. By establishing a multi-objective optimization model, we have identified an optimal spare parts storage strategy that strikes a balance between the total cost and the system's continuous operational duration. The experimental results indicate that, within the assumed 3-year effective operational cycle of the complex equipment system, when equipping it with 2, 2, and 3 spare parts for the gyroscope, accelerometer, and servo motor respectively, the system's longest continuous operating duration is 37,300 hours, and the minimum cost is 84,000 RMB. Compared to the single-objective optimization model, this model not only reduces the total cost but also ensures that the system will not be interrupted due to spare parts shortages within its normal lifecycle. This study provides valuable insights and optimization methods for improving the reliability of complex systems.
Cloud is providing virtual environment in order to share the data across multiple owners and users across pervasive computing environments. The security among virtual environment is the key challenge of the research i...
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Nowadays, precision agriculture and precision viticulture are under strong development. In order to accomplish effective actions, robots require robust perception of the culture and the surrounding environment. Comput...
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ISBN:
(纸本)9789897584886
Nowadays, precision agriculture and precision viticulture are under strong development. In order to accomplish effective actions, robots require robust perception of the culture and the surrounding environment. computervision systems have to identify plant parts (branches, stems, leaves, flowers, fruits, vegetables, etc.) and their respective health status. Moreover, they must merge various plant information, to measure agronomic indices, to classify them and finally to extract data to enable the agriculturist or expert to make a relevant decision. We propose a real-time method to acquire, process and register multispectral images fused to 3D. The sensors system, consisting of a multispectral camera and a RGB-D sensor, can be embedded on a ground robot or other terrestrial vehicles. Experiments conducted in the vineyard field demonstrate that agronomic analyses are allowed.
The Information Technology/Operational Technology convergence towards Industry 4.0 opens the opportunity to leverage recent advancements in Information Technology for Operational Technology, such as Cloud, Internet of...
The Information Technology/Operational Technology convergence towards Industry 4.0 opens the opportunity to leverage recent advancements in Information Technology for Operational Technology, such as Cloud, Internet of Things, and Artificial Intelligence. Meanwhile, cyber-attacks are increasing for Operational Technology. The security aspect in Operational Technology systems has traditionally been a low priority, in contrast with speed. This introduces challenges as Industrial control Systems such as Programmable Logic controller in Operational Technology have been traditionally optimized for speed rather than security due to limited computing power. As computations need to be as efficient as possible, security in Operational Technology has yet to be managed as robustly as in Information Technology. Operational Technology communication protocols for securing data transfer, for example, have no or just a few security capabilities, even for basic authentication and encryption. Common security algorithms rely on random numbers. However, Random Number Generator is not usually part of standard functions in Programmable Logic controllers, the core control component in Industrial control Systems. In Industrial control Systems, the Random Number Generator is mostly implemented as a software-based Pseudo Random Number Generator. This paper shows how to apply a Pseudo Random Number Generator in a Siemens Compact PLC S7-1200 using a modified lightweight XORshift algorithm. The XORshift algorithm can generate better randomness than the system’s clock-based implementation in the Siemens Library of Generic Functions.
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