scholarly journals Dynamic Obstacle Avoidance Algorithm Based on DYNAMIC Environment MR

2022 ◽  
Vol 2146 (1) ◽  
pp. 012030
Author(s):  
Juan Guo
Keyword(s):  
Information Systems ◽  
Computer Technology ◽  
Rapid Development ◽  
Dynamic Environment ◽  
Database Systems ◽  
Huge Amount ◽  
Key Technology ◽  
Dynamic Obstacle Avoidance ◽  
Dynamic Obstacle ◽  
Important System

Abstract With the rapid development of computer technology, the importance of database systems as an indispensable part of information systems is becoming more and more prominent. And nowadays, the society has been increasingly using modern means to program databases. Database is a large and complex, huge amount of data and has a certain structure and independence of the important system, its programming requires certain technical means, the author will be in the text for the database programming involved in the key technology to explain.

Recent Advances in Robot Trajectory Planning in a Dynamic Environment

2021 ◽  
Vol 14 ◽  
Author(s):  
Hongxin Zhang ◽  
Rongzijun Shu ◽  
Guangsen Li
Keyword(s):  
Trajectory Planning ◽  
Dynamic Environment ◽  
Local Planning ◽  
Robot Trajectory ◽  
Recent Advances ◽  
Dynamic Obstacle Avoidance ◽  
Dynamic Obstacle ◽  
Task Collaboration ◽  
Global Planning ◽  
Robot Trajectory Planning

Background: Trajectory planning is important to research in robotics. As the application environment changes rapidly, robot trajectory planning in a static environment can no longer meet actual needs. Therefore, a lot of research has turned to robot trajectory planning in a dynamic environment. Objective: This paper aims at providing references for researchers from related fields by reviewing recent advances in robot trajectory planning in a dynamic environment. Methods: This paper reviews the latest patents and current representative articles related to robot trajectory planning in a dynamic environment and introduces some key methods of references from the aspects of algorithm, innovation and principle. Results: In this paper, we classified the researches related to robot trajectory planning in a dynamic environment in the last 10 years, introduced and analyzed the advantages of different algorithms in these patents and articles, and the future developments and potential problems in this field are discussed. Conclusion: Trajectory planning in a dynamic environment can help robots to accomplish tasks in a complex environment, improving robots’ intelligence, work efficiency and adaptability to the environment. Current research focuses on dynamic obstacle avoidance, parameter optimization, real-time planning, and efficient work, which can be used to solve robot trajectory planning in a dynamic environment. In terms of the combination of multiple algorithms, multi-sensor information fusion, the combination of local planning and global planning, and multi-robot and multi-task collaboration, more improvements and innovations are needed. It should create more patents on robot trajectory planning in a dynamic environment.

scholarly journals SISTEM INFORMASI DAN PENGOLAHAN DATA KRIMINAL DI POLRES PASAMAN BARAT DENGAN AKSES VIRTUAL HOST BEBASIS CLIENT SERVER MENGGUNAKAN BAHASA PEMROGRAMAN PHP DAN DATABASE MYSQL

2019 ◽  
Vol 1 (2) ◽  
pp. 7-12
Author(s):  
Larissa Navia Rani ◽  
Hari Marfalino ◽  
Putri Asysyura Yuska
Keyword(s):  
Information System ◽  
Information Systems ◽  
Data Processing ◽  
Programming Language ◽  
Computer Technology ◽  
Rapid Development ◽  
Client Server ◽  
Research Site ◽  
Uml Modeling ◽  
Computer Based

The rapid development of computer technology and information greatly helps work in storing, accessing to data processing becomes faster and easier, this has triggered various fields in utilizing this with the use of computer-based information systems, especially for intelligence units in western security police. The system that will be created uses access to the virtual host-based client server. Modeling used UML modeling, this system is built using PHP programming language and MYSQL database. The results of the study show that the information system designed can process criminal data and is able to be implemented at the research site..

scholarly journals Adaptive Virtual Impedance Control of a Mobile Multi-Robot System

Robotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 19
Author(s):  
Duanne Engelbrecht ◽  
Nico Steyn ◽  
Karim Djouani
Keyword(s):  
Impedance Control ◽  
Lower Layer ◽  
Dynamic Environment ◽  
Robot System ◽  
Collaborative Robots ◽  
Dynamic Obstacle Avoidance ◽  
Movement Stability ◽  
Dynamic Obstacle ◽  
Virtual Impedance ◽  
Multi Robot

The capabilities of collaborative robotics have transcended the conventional abilities of decentralised robots as it provides benefits such as scalability, flexibility and robustness. Collaborative robots can operate safely in complex human environments without being restricted by the safety cages or barriers that often accompany them. Collaborative robots can be used for various applications such as machine tending, packaging, process tasks and pick and place. This paper proposes an improvement of the current virtual impedance algorithm by developing an adaptive virtual impedance controlled mobile multi-robot system focused on dynamic obstacle avoidance with a controlled planar movement. The study includes the development of a mobile multi-robot platform whereby each robot plans a path individually without a supervisor. The proposed system would implement a two-layered hierarchy for robot path planning. The higher layer generates a trajectory from the current position to the desired position, and the lower layer develops a real-time strategy to follow the generated trajectory while avoiding static and dynamic obstacles. The key contribution of this paper is the adaptive virtual impedance controller for a multi-robot system that will maintain movement stability and improve the motion behaviour in a dynamic environment.

scholarly journals Mobile Robot Path Planning Based on Time Taboo Ant Colony Optimization in Dynamic Environment

2021 ◽  
Vol 15 ◽  
Author(s):  
Ni Xiong ◽  
Xinzhi Zhou ◽  
Xiuqing Yang ◽  
Yong Xiang ◽  
Junyong Ma
Keyword(s):  
Path Planning ◽  
Ant Colony Optimization ◽  
Dynamic Environment ◽  
Global Search ◽  
Convergence Speed ◽  
Ant Colony ◽  
Time Varying ◽  
Ant Colony Optimization Algorithm ◽  
Dynamic Obstacle Avoidance ◽  
Dynamic Obstacle

This article aims to improve the problem of slow convergence speed, poor global search ability, and unknown time-varying dynamic obstacles in the path planning of ant colony optimization in dynamic environment. An improved ant colony optimization algorithm using time taboo strategy is proposed, namely, time taboo ant colony optimization (TTACO), which uses adaptive initial pheromone distribution, rollback strategy, and pheromone preferential limited update to improve the algorithm's convergence speed and global search ability. For the poor global search ability of the algorithm and the unknown time-varying problem of dynamic obstacles in a dynamic environment, a time taboo strategy is first proposed, based on which a three-step arbitration method is put forward to improve its weakness in global search. For the unknown time-varying dynamic obstacles, an occupancy grid prediction model is proposed based on the time taboo strategy to solve the problem of dynamic obstacle avoidance. In order to improve the algorithm's calculation speed when avoiding obstacles, an ant colony information inheritance mechanism is established. Finally, the algorithm is used to conduct dynamic simulation experiments in a simulated factory environment and is compared with other similar algorithms. The experimental results show that the TTACO can obtain a better path and accelerate the convergence speed of the algorithm in a static environment and can successfully avoid dynamic obstacles in a dynamic environment.

scholarly journals Dynamic Obstacle Avoidance for an Omnidirectional Mobile Robot

2010 ◽  
Vol 2010 ◽  
pp. 1-14 ◽  
Author(s):  
Robert L. Williams ◽  
Jianhua Wu
Keyword(s):  
Obstacle Avoidance ◽  
Experimental Validation ◽  
Vision System ◽  
Dynamic Environment ◽  
Ohio University ◽  
Omnidirectional Mobile Robot ◽  
Dynamic Obstacle Avoidance ◽  
Novel Method ◽  
Dynamic Obstacle ◽  
Moving Obstacle

We have established a novel method of obstacle-avoidance motion planning for mobile robots in dynamic environments, wherein the obstacles are moving with general velocities and accelerations, and their motion profiles are not preknown. A hybrid system is presented in which a global deliberate approach is applied to determine the motion in the desired path line (DPL), and a local reactive approach is used for moving obstacle avoidance. A machine vision system is required to sense obstacle motion. Through theoretical analysis, simulation, and experimental validation applied to the Ohio University RoboCup robot, we show the method is effective to avoid collisions with moving obstacles in a dynamic environment.

scholarly journals Correlational Analysis of the Availability and Usage of Geographic Information Systems by Students and Lecturers an Higher Educational Institutions

2021 ◽  
Vol 3 (1) ◽  
pp. 144-158
Author(s):  
Jude Odiakaosa Osakwe ◽  
Teresia Ankome ◽  
Martin Ujakpa
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Information And Communication Technologies ◽  
Rapid Development ◽  
Sampling Technique ◽  
Database Systems ◽  
Geographic Information ◽  
Educational Institutions ◽  
Higher Educational Institutions ◽  
Higher Educational

There has been a rapid development of Information and communication Technologies (ICTs) globally, and this includes the Geographic Information Systems (GISs) which has evolved over the years and aimed at solving many geographic problems as fast and efficiently as possible. The importance of GIS to students and lecturers in higher educational institutions is it’s ability to easily analyse locations together with the conventional database systems. This paper assessed the correlation between the availability and use of GIS in Higher Educational Institutions (HEIs). The study is exploratory in nature and employed the use of questionnaires as instrument to collect data. Simple random sampling technique was used to select one hundred and ten (110) lecturers one thousand five hundred and seventy-nine (1579) students from a university. Findings revealed that GIS for analysis is still at its lowest ebb and hence calls for an action to motivate or encourage lecturers and students to use it. Though there are indications that GIS will be of great value in schools, students and lecturers they will be happy to use it for their teaching and learning.   The study also revealed availability of GIS was not tied to its usage.

scholarly journals The Application of Database Technology in Information Society and its Existing Problems

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Xia Hongying
Keyword(s):  
Computer Technology ◽  
Information Society ◽  
Management System ◽  
Rapid Development ◽  
Database Systems ◽  
Information Management System ◽  
Database Management System ◽  
Multimedia Data ◽  
Complex Data ◽  
Database Technology

With the development of computer technology and network communication technology and multimedia technology,database technology has become an important technical means and software technology for organizing and managinglarge amount of data in information society. It is the foundation of network information management system. Itnot only has a complete theoretical basis, and with the rapid development of hardware technology and softwaretechnology, its application is more and more widely. However, the rapid development of information technology isthat people face such a situation: CAD / CAM, CIMS, CASE, GIS and other applications require the managementof increasingly complex information, such as multimedia data, such as multimedia data, spatial data, scientifi c data,Data and other data types, these data compared with the traditional type, not only the type of complex, diverse forms,and storage, transmission, operation and retrieval methods also have many new features, new requirements, on theone hand, the need for database technology and database systems To manage these complex data in order to obtainthe database system has many of the data management functions, such as query, retrieval, recovery, concurrencycontrol, integrity, storage management. On the other hand, due to the vigorous development of network technology,information processing has long been from a single user environment to the development of the network environment,this environment for resources, information sharing provides a great convenience, and because of multi-machine worktogether to greatly improve the work , The combination of the two requires that the database management system beable to manage complex data objects in a networked environment or heterogeneous environment. Traditional DBMSscannot eff ectively handle complex multimedia data, thus requiring the use of new multimedia indexing and retrievaltechniques. Multimedia database technology is an important part of computer technology, it can simultaneously acquire,process, edit, store and display text, sound, video, graphics and other diff erent media, while it has diversity, integrationand interactivity and so on. Only to solve the key technical issues of multimedia, can be widely used to promote itsfaster development.

Dynamic Obstacle Avoidance Algorithm for the Mobile Robot Based on Depth Image of Kinect Sensor

2014 ◽  
Vol 541-542 ◽  
pp. 1072-1078
Author(s):  
Yi Zhang ◽  
Xue Rong Tong ◽  
Yuan Luo
Keyword(s):  
Mobile Robot ◽  
Obstacle Avoidance ◽  
Dynamic Environment ◽  
Path Selection ◽  
Depth Image ◽  
Depth Information ◽  
Kinect Sensor ◽  
Dynamic Obstacle Avoidance ◽  
Kalman Filter Algorithm ◽  
Dynamic Obstacle

In order to solve the problem of the dynamic obstacle avoidance of the mobile robot in indoor environment, a new approach based on depth information is presented in this paper. The depth information of surrounding environment was collected and used to set the robots obstacle avoidance warning area by a Kinect sensor. When the moving obstacle accessed into the warning area, the robots obstacle avoidance direction was determined preliminary by the obstacles position, and then an improved Kalman filter algorithm was used to optimize the avoidance path. Experiments show that this approach can overcome the potential problem of path selection, and realize the mobile robot obstacle avoidance behavior in the dynamic environment.

Robot navigation based on improved A* algorithm in dynamic environment

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Lin Zhang ◽  
Yingjie Zhang ◽  
Manni Zeng ◽  
Yangfan Li
Keyword(s):  
Obstacle Avoidance ◽  
Optimal Path ◽  
Dynamic Environment ◽  
Evaluation Function ◽  
A Algorithm ◽  
Content Type ◽  
B Spline ◽  
Dynamic Obstacle Avoidance ◽  
Dynamic Obstacle ◽  
Adaptive Step

Purpose The purpose of this paper is to put forward a path planning method in complex environments containing dynamic obstacles, which improves the performance of the traditional A* algorithm, this method can plan the optimal path in a short running time. Design/methodology/approach To plan an optimal path in a complex environment with dynamic and static obstacles, a novel improved A* algorithm is proposed. First, obstacles are identified by GoogLeNet and classified into static obstacles and dynamic obstacles. Second, the ray tracing algorithm is used for static obstacle avoidance, and a dynamic obstacle avoidance waiting rule based on dilate principle is proposed. Third, the proposed improved A* algorithm includes adaptive step size adjustment, evaluation function improvement and path planning with quadratic B-spline smoothing. Finally, the proposed improved A* algorithm is simulated and validated in real-world environments, and it was compared with traditional A* and improved A* algorithms. Findings The experimental results show that the proposed improved A* algorithm is optimal and takes less execution time compared with traditional A* and improved A* algorithms in a complex dynamic environment. Originality/value This paper presents a waiting rule for dynamic obstacle avoidance based on dilate principle. In addition, the proposed improved A* algorithm includes adaptive step adjustment, evaluation function improvement and path smoothing operation with quadratic B-spline. The experimental results show that the proposed improved A* algorithm can get a shorter path length and less running time.

The Development of Database Technology

2011 ◽  
Vol 204-210 ◽  
pp. 769-772
Author(s):  
Xian Min Wei
Keyword(s):  
Information Systems ◽  
Web Services ◽  
Computer Technology ◽  
Future Development ◽  
Development Process ◽  
Rapid Development ◽  
Development Trend ◽  
Technology Research ◽  
Database Technology ◽  
Important Branch

With the rapid development of computer technology, database technology is becoming an important branch of the computer field, it is increasingly being used in e-commerce, Web services, information systems, etc., database technology research has become necessary. This paper describes the development process of database technology, and then lists a number of measures to optimize database performance, and finally on the future development trend of the database are discussed.

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