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System för registrering av underhållsjour
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
2005 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Call-out registration system (English)
Abstract [sv]

På Bravikens pappersbruk tillämpas idag ej skiftgående underhåll, istället används en underhållsjour som kallas ut vid problem. T.ex. om en motor havererat. I dagsläget sker en del av denna registrering på papper, vilket medför att hanteringen blir tidsödande och ineffektiv. I det här examensarbetet har vi utvecklat ett program som ska underlätta för vakten att registrera dessa jourtillfällen.

Programspråket Java valdes för att utveckla programmet eftersom det går att skriva applikationer som är direkt körbara från en webbläsare – sk. applets. Alla på intranätet kan då komma åt programmet. Nackdelen med applets är att den har väldigt begränsade rättigheter. De får t.ex. inte öppna en socket (en anslutning) till en annan dator. Detta orsakar problem eftersom appleten och databaserna ligger på skilda servrar. Problemet löstes genom att installera ett ”vidarbefordringsprogram” på samma server som appleten. Eftersom appleten får ansluta till samma server den är sparad på, kan anslutningen ske till detta program istället som i sin tur ansluter till databaserna.

Vi använder databasgränsnittet JDBC för all kommunikation med databaserna. Programmet hämtar information från en databas och lagrar den i en annan. Ett annat önskemål var att programmet skulle ha flera fönster öppna samtidigt. Eftersom programmet körs från en webbläsare tyckte vi att det var bättre att använda sig av flikar. Detta gör att det blir mindre rörigt, och lättare för användaren att navigera mellan jourtillfällena.

Abstract [en]

At the Braviken paper mill a non-shiftworking maintenance is applied today. Instead they use a maintenance duty group which is called in for example if an engine has broken down. Today a part of this registration is on paper which makes the handling time consuming and inefficient. In this thesis we have developed a program which will make it easier for the guard to register these duty occasions.

The program language Java was chosen to develop the program, as you can write applications which are directly applicable from a webreader so-called applets. Then everybody with intranet can reach the program. The disadvantage with applets is that it has got very limited rights. Thery must not for example open a socket (a connection) to another computer.This causes problems as the applet and the database are on different servers. The problem is solved by installing a forwarding program on the same server as the applet. As the applet is allowed to connect to the same server on which it is saved, the connection can be done to this program instead which then connects to the databases.

We use the database limit JDBC for all communication with the databases. The program gets information from one database and stores it in another one. Another desire was that the program should be able to have more windows open at the same time. As the program is driven from a webreader, we thought it was better to use flaps. That makes it less complicated and easier for the user to navigate between the duty occasions.

Place, publisher, year, edition, pages
2005. , 70 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-97847ISRN: LITH-ITN-EX--05/010--SEOAI: oai:DiVA.org:liu-97847DiVA: diva2:654681
Subject / course
Computer Engineering
Supervisors
Examiners
Available from: 2013-10-08 Created: 2013-09-23 Last updated: 2013-10-08Bibliographically approved

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CiteExportLink to record
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