The Functional Design on Fault Recorder of μC/OS-II-Based Intelligent Substation

2013 ◽  
Vol 415 ◽  
pp. 209-215
Author(s):  
Yi Hui Zhang ◽  
Wen Qiang Hu ◽  
Shi Ming Liu ◽  
Hua Bing Wang
Keyword(s):  
Operating System ◽  
Control Unit ◽  
Functional Design ◽  
Centralized Control ◽  
Functional Requirements ◽  
Fault Recorder ◽  
Machine Theory ◽  
Application Requirements ◽  
Embedded Development ◽  
Program Reliability

Regarding the functional requirements for smart substation in fault recorder, this paper introduced μC / OS-II, an embedded real-time multitasking operating system as the functional design. The program works with the embedded operating system, the state machine theory and new methods for embedded development, whilst tasking full use of the advantages of such functions as task scheduling, message queues, etc., aiming to achieve a fault recorder function of intelligent substation. More than taking care of the difficulty of programming, it could improve the program reliability and portability. The program has been applied in an intelligent substation protection in centralized control unit, which has brought back a good fault recorder performance. On this basis, more functions can be integrated, including network log analysis, state estimation, etc., in order to truly meet the application requirements of the smart substations.

scholarly journals Feature Model Configuration Based on Two-Layer Modelling in Software Product Lines

2019 ◽  
Vol 9 (4) ◽  
pp. 2648
Author(s):  
Elham Darmanaki Farahani ◽  
Jafar Habibi
Keyword(s):  
Product Line ◽  
Feature Model ◽  
Functional Requirements ◽  
Product Lines ◽  
Software Products ◽  
Model Configuration ◽  
Software Product ◽  
Software And Hardware ◽  
Application Requirements

The aim of the Software Product Line (SPL) approach is to improve the software development process by producing software products that match the stakeholders’ requirements. One of the important topics in SPLs is the feature model (FM) configuration process. The purpose of configuration here is to select and remove specific features from the FM in order to produce the required software product. At the same time, detection of differences between application’s requirements and the available capabilities of the implementation platform is a major concern of application requirements engineering. It is possible that the implementation of the selected features of FM needs certain software and hardware infrastructures such as database, operating system and hardware that cannot be made available by stakeholders. We address the FM configuration problem by proposing a method, which employs a two-layer FM comprising the application and infrastructure layers. We also show this method in the context of a case study in the SPL of a sample E-Shop website. The results demonstrate that this method can support both functional and non-functional requirements and can solve the problems arising from lack of attention to implementation requirements in SPL FM selection phase.

Designs for Synchronous Data Acquisition of a Distributed System

2012 ◽  
Vol 239-240 ◽  
pp. 869-872
Author(s):  
Zuo Xi Tian ◽  
Feng Yu ◽  
Zeng Wu Liu
Keyword(s):  
Data Acquisition ◽  
Distributed System ◽  
Control Unit ◽  
Time Base ◽  
Time Signal ◽  
Centralized Control ◽  
Distributed Sensor ◽  
Network Time ◽  
Data Acquisition Module ◽  
C Center

To resolve the problem of acquiring multi sensors signals synchronously in a distributed system, a project of distributed synchronous data acquisition based network time server was designed. The system comprised multi distributed sensor units, a centralized control unit and D&C (display and control) center. Each sensor unit was equipped with a data acquisition module. All data from sensor units were concentrated and sent to the D&C center, and the D&C center implemented power supply and management of sensor units via the centralized control unit. To synchronize the data acquisition modules, a network time server was employed in the D&C center. It received standard time information from GPS and outputted the time signal with DCF77-encoding. Each data acquisition module received and decoded DCF77 time signal, obtaining absolute time and synchronizing its time base. Above project was applied successfully in a system comprising 20 distributed sensor units. The results prove the designs feasible.

A Study on the Design Method of the Real-Time System Software Based on RTOS

2014 ◽  
Vol 513-517 ◽  
pp. 2487-2491
Author(s):  
Dong Zhao ◽  
Shang Wei Jiang ◽  
Hong Wei Zhao ◽  
Xin Tong Yu
Keyword(s):  
Operating System ◽  
Real Time ◽  
Design Method ◽  
Control Flow ◽  
Functional Requirements ◽  
Time System ◽  
Real Time System ◽  
Real Time Operating System ◽  
The Real ◽  
Structured Analysis

This paper combines the characteristics of real-time embedded systems and the real-time operating system to propose a software engineering method and process which bases on the function structured analysis and task structured design. First in the process of structured analysis based on the Hatley-Pirbhai method, extracting and sorting out the data flow and control flow according to the functional requirements of the system, analyzing and processing the functions of the system, the dependency among the functions and the timing sequence, and then realizing the design of the specific functions of the system, next achieving the structural design through the improving method, it also simplifies the system design processes. At this time, just need to analyze and divide the processing which is obtained from the structural analysis to get the specific task, design the interfaces among the tasks and also every task to get the new design method of the embedded real-time operating system, which also solves hard issue of the traditional method which is the weak extracting and developing iteration in the embedded real-time system.

scholarly journals Smart System for the Optimization of Logistics Performance of the Pruning Biomass Value Chain

2018 ◽  
Vol 8 (7) ◽  
pp. 1162 ◽  
Author(s):  
Girma Gebresenbet ◽  
Techane Bosona ◽  
Sven-Olof Olsson ◽  
Daniel Garcia
Keyword(s):  
Supply Chain ◽  
Value Chain ◽  
Route Planning ◽  
Control Unit ◽  
Relevant Information ◽  
Functional Requirements ◽  
Logistics System ◽  
Information Platform ◽  
Biomass Supply ◽  
Solid Biofuel

Agricultural pruning biomass is one of the important resources in Europe for generating renewable energy. However, utilization of the agricultural residues requires development of efficient and effective logistics systems. The objective of this study was to develop smart logistics system (SLS) appropriate for the management of the pruning biomass supply chain. The paper describes the users’ requirement of SLS, defines the technical and functional requirements and specifications for the development of SLS, and determines relevant information/data to be documented and managed by the SLS. This SLS has four major components: (a) Smart box, a sensor unit that enables measurement of data such as relative humidity, temperature, geographic positions; (b) On-board control unit, a unit that performs route planning and monitors the recordings by the smart box; (c) Information platform, a centralized platform for data storing and sharing, and management of pruning supply chain and traceability; and (d) Central control unit, an interface linking the Information platform and On-board control unit that serves as a point of administration for the whole pruning biomass supply chain from harvesting to end user. The SLS enables the improvement of performance of pruning biomass supply chain management and product traceability leading to a reduction of product loss, increased coordination of resources utilisation and quality of solid biofuel supply, increased pruning marketing opportunity, and reduction of logistics cost. This SLS was designed for pruning biomass, but could also be adapted for any type of biomass-to-energy initiatives.

scholarly journals Voice activated Home System for the Movement Impaired Aged Persons

2019 ◽  
Vol 4 (11) ◽  
pp. 32-37
Author(s):  
Godfrey Nwaji Okorafor ◽  
Felix Kelechi Opara ◽  
Nkwachukwu Chukwuchekwa ◽  
Chigozie Gordon Ononiwu
Keyword(s):  
Control Unit ◽  
Centralized Control ◽  
Home Appliances ◽  
The Disabled ◽  
Robotic Wheelchair ◽  
The Way

Smarthome system is one of the major growing industries that change the way people live, and most of these smarthome systems target abled young persons` seeking luxury and sophisticated smarthome platforms; but this design targets the disabled aged. This smarthome system allows the aged to wirelessly control home appliances from a centralized control unit. The developed system is integrated as a single portable unit that allows the user to wirelessly control lights, fans, electronic doors, electronic windows and robotic wheelchair. The system is portable and constructed in a way that it is easy to install, configure, run, and maintain. Here, voice being the primary interface between the aged user and the smarthome, a voice controlled smarthome system is designed, so that the users can perform their domestic tasks by just the use of their voices to speak their command words.

scholarly journals Operating System using CAN Bus on Different Process Circulated Technology with High Speed Prime Marine Engine

2019 ◽  
Vol 8 (9S2) ◽  
pp. 657-659
Keyword(s):  
Operating System ◽  
High Speed ◽  
Control Unit ◽  
Control Area ◽  
Local Unit ◽  
Individual Parameter ◽  
Normal Speed ◽  
Individual Protection ◽  
And Control ◽  
Interface Engine

The objective of this work is marine main diesel engine with four stroke and normal speed operating system depend on circulated dealing out and failure tolerant Control area topology control arrangement correspondence innovation was exhibited. It incorporates various units like motor control unit, demonstrating board unit, motor wellbeing unit, primary motor interface, engine control unit computerized representative unit and dispersed preparing unit. Framework information can be traded by double repetitive CAN organize. The appropriated handling unit is free in material science totally; it contains less units effect even if few units broke down. The correspondence of framework cell is composed by set of rules correspondence convention of CAN, which individual parameter analyze . The Unit has capacity of individual -protection when misfortune influence, and local unit decide to stop the point its abnormal in speed insufficient of air it interact the local unit and high priority interface and control the engine are advantageous and amicable.

scholarly journals A Communication Protocol Design aimed at a Multi-Agent System Framework for Miniaturized Satellite Systems

2020 ◽  
Author(s):  
Samantha Iteriano-Valverde ◽  
David Scazzoli ◽  
Carmen Chan-Zheng ◽  
Johan Carvajal-Godinez ◽  
Mauricio Magarini
Keyword(s):  
Control Unit ◽  
Protocol Design ◽  
Centralized Control ◽  
Distributed Architecture ◽  
Multi Agent Systems ◽  
Satellite Systems ◽  
Message Exchange ◽  
Multi Agent ◽  
Systems Framework ◽  
The Relationship

In recent years space-science and exploration have become more accessible due to the popularization of the concept of CubeSats. CubeSats are being used as a result of their convenient size and weight requirements, allowing for target missions to be designed, developed, and launched with a significant reduction of costs compared to traditional space missions.  Furthermore, the development of target missions has become more intricate, forcing a shift in the traditional notion of using a centralized control architecture to a distributed architecture.  A distributed architecture tackles the problem of a possible functionality loss over the control unit. This paper describes the extension of capabilities of the Multi-Agent Systems Framework for Embedded Systems (MAES). This extension provides MAES framework with the ability to perform inter-platform communication, so now the control unit architecture can be broadened allowing agents from different platforms to interact and perform cooperatively different routines designed by the developer, so it is not limited to the capabilities of just one platform. Moreover, this paper shows the results of the experimental setup showing the precision of inter-platform message exchange and the relationship between the delay of the exchange of inter-platform messages and the number of agents that are simultaneously running on each platform.

scholarly journals Building DEVS Models from the Functional Design of Software Architecture Components to Estimate Quality

2020 ◽  
Author(s):  
Maria Julia Blas ◽  
Horacio P. Leone ◽  
Silvio M. Gonnet
Keyword(s):  
Software Architecture ◽  
Simulation Models ◽  
Software Architectures ◽  
Functional Design ◽  
Functional Requirements ◽  
Web Based ◽  
Quality Properties ◽  
Automatic Mapping ◽  
Estimate Quality ◽  
High Level

Software architectures can be used as a vehicle to improve the study of quality properties in the early stages of development. This paper proposes an automatic mapping between the design of architectural components and the specification of DEVS atomic models with aims to evaluate all-purpose quality metrics. Then, we use the functional description of architectural components (that address functional requirements) to estimate the architecture adjustment to non-functional requirements. The guidelines for structuring the simulation models are defined starting from the design of high-level components. To illustrate the proposal, web-based architecture is used as proof of concepts.

Implementation of Embedded Linux Systems on FPGA Based Circuits for Real Time Process Control

MACRo 2015 ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 145-154 ◽  
Author(s):  
Szabolcs Hajdu ◽  
Sándor-Tihamér Brassai
Keyword(s):  
Operating System ◽  
Process Control ◽  
Real Time ◽  
Data Exchange ◽  
Control Unit ◽  
Control Algorithms ◽  
Time Process ◽  
The Real ◽  
Measurement Results ◽  
Embedded Soc

AbstractThis paper presents a framework based on embedded SOC systems, which allows the testing and use of control algorithms implemented on FPGA circuits. For monitoring and parameterization a real-time Linux operating system was used. In this paper different methods for data exchange between the operating system and the control unit were introduced. The delay between the operating system and the control unit during the data exchange was studied and the measurement results discussed reflect the real-time functionality of the system.

Fusion of Art and Technology in Professional Cycling Sportswear Design

Leonardo ◽  
2014 ◽  
Vol 47 (2) ◽  
pp. 176-178 ◽  
Author(s):  
Jie Luo ◽  
Aihua Mao ◽  
Joe S. Au ◽  
Yi Li ◽  
Xing Zhang
Keyword(s):  
Theoretical Model ◽  
Thermal Comfort ◽  
Muscle Fatigue ◽  
Design Process ◽  
Knowledge Integration ◽  
Functional Design ◽  
Functional Requirements ◽  
Aesthetic Design ◽  
Art And Technology ◽  
Professional Cycling

Cycling sportswear that meets the multiple functional requirements of thermal comfort, biomechanical protection and aesthetics is highly demanded by cyclists. These multiple functional requirements lead to innovations in cycling sportswear design based on multi-disciplinary knowledge integration and fusion of art and technology. A theoretical model for cycling sportswear design is developed in this paper to model the design process by systematically integrating different knowledge and identifying the relationships between them. This model demonstrates that the design innovation of cycling sportswear is the fusion of aesthetic design with thermal and biomechanical functional design, which meets cyclists' demand for wearing comfort, relief of muscle fatigue and beautiful appearance.

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