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  • 1.
    Anasagasti Alberdi, Mikel
    University of Skövde, School of Technology and Society.
    Function Block Environment in Wise ShopFloor: Graphical User Interface2012Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Nowadays, accomplishing real time information applications is one of the goals that customers are looking for in the market. Furthermore, two essential features are required in this society to ensure the success of these applications: reusability and interoperability. The new standard of Function blocks [FB] is one efficient way to reach them. This new standard, whose use has considerably  increased,  consists  of  a  large  number  of  functionalities  divided  into  distributed shorter  codes.  In  fact,  that  is  why  function  blocks  are  different  from  other  programming languages:   it   works  with   short   distributed   functionalities   interconnected   among   them. Therefore,  for  this  reason  function  blocks  are  used  in  distributed  automation  systems.  The function  block  standard  is  formally  specified  in  IEC  61499,  for  distributed  Industrial  Process Measurement  and  Control  Systems  (IPMCS).  It  is  worth  of  mentioning  that  function  blocks design is usually carried out graphically (interconnecting data and events within a FB network), whose clarity and easiness are always significant requirements, as in any visual system. On  the  other  hand,  web-based  application  development  is  getting  more  and  more  common during the last years because of its efficiency, portability and flexibility. It also provides many advantages to users, in real-time monitoring, real-time manufacturing, or even remote control. These are what companies are looking for in the 21st century. Nevertheless, combining web-based programming with function blocks can be the key to companies’ success.  This project consists of implementing a web-based function block environment for IEC 61499 compliant  control  systems  development.  It  would  be  a  proper  way  to  meet  the  above mentioned    customer    requirements    (efficiency,    portability,    flexibility,    reusability    and interoperability).  The  main  objective  of  the  five-month  project  is  to  develop  a  web-based function block environment with a user-friendly graphical interface. The challenges include:   - Carrying out research on Function Blocks and its run-time environment. -  Implementing  an  easy-to-use  graphical  interface  for  creating,  saving  and  editing different types of function blocks (basic FB, composite FB and applications). - Introducing iconic design and visual presentation of function blocks and connections via drag-and-drop. -  Developing  an  application  to  generate  eXtensible  Markup  Language  (XML)  files, allowing  the  exchange  of  files  between  different  tools  and  devices  of  different vendors. This web-based function block environment will be used at Volvo Cars and Sandvik AB as a part of  a  big  research  program.  It  is  anticipated  that  the  function  block  environment  will  be extended  and  applied  to  a  real-time  decision  support  system  for  walking  workers  where important events or tasks will be distributed to the right person at the right time.

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