Free Software

presentation qelectrotech

 

  

Sofiane Ait Chabane & Robert Saint-Fort

 

Summary

 Under EU Free Software , we discover a multitude of free software in the field of electrical engineering but also more general science. Work under Linux

made the experience much more interesting .

 In our turn , we will be presenting qelectrotech , a simple tool for mapping electrical circuits. The result is a remarkable graphic quality that makes possible the operation , including educational purposes.

 

Abstract

Within the unit of Free Softwares , We Have Discovered many free tools and softwares related to electrical engineering goal aussi more general scientific domains . Working on a Linux environment made ​​the experience even more interesting. In turn , we will present qelectrotech , a single mapping software for electrical circuits. The results show a remarkable That makes the graphic quality can use in educational purposes.

 

 

   “Teaching a non-free program returns to teach dependence , which is contrary to the mission of the school ” - Richard Stallman

 

introduction

It was in 1984 that the free software movement was born , headed by researcher Richard Stallman followed by a handful of programmers. Opposed to the restrictive policy source code , they are expressed

for a free user access to programs.

Free software gives users the freedom to run , copy, distribute, study, change and improve the software .

Qelectrotech is a program under GNU / GP is free and open . It is specially designed to make the electrical mapping oriented electrical and power electronics , no simulation or calculations. Its simplicity and practicality make it a must for any electrician software.

A. Interface Overview

 

TEQ interface is simple and easy to use . At the top is the menu bar . It provides access to many functions : creating project files , editing, etc. preferences .

The work area is to the right , this is where they deposit items, and link them to form the pattern.

The left side gives access to two components: the first is the “ panel elements ”, which includes the current project , the associated diagrams, all projects of the user, mainly collections of components. The first is the common collection provided by default , the second is that of combining its components created by user himself

same or imported from outside .

The second 'Cancellation' pane displays a list of all the shares of companies changes and cancellations in the diagram.

At the bottom of the work area are editable elements of cartridge.

Note that in the current version , support is not available , however explanations are available on the website of the software.

 

B. features

We will explore the features of TEQ through a small example schema : Industrial Process . 1 . Creating a project

Press this icon to create a new project. Note that TEQ can handle multiple projects simultaneously , and each project can contain multiple schemas .

  

By clicking on Project in the menu bar we can add a diagram to remove , to clean .

It is necessary to change the project properties to properly define and to work as desired. We will go back the project name , size patterns , the type of driver to use (single or multi-wire ) , date etc. . Projects are saved in a file . Qet incorporating all the parameters of the project,

diagrams with all components .

  

2 . Make a diagram

 a. Submit a component and annotate

Make a diagram TEQ is so quick and easy : just locate the component to be used in the panel and then click on elements by drag / drop in the work area .

After moving the desired component

You can annotate by double clicking

on empty fields provided for this purpose .

The components can be rotated , deleted, copied , or by clicking

above with the right mouse button or by using shortcuts

.

Text can be inserted by clicking the icon at the top right

                                                                                          

b . Wiring components

To connect a component to another , simply position the mouse over the component terminal and “pull

“Until the arrival terminal .

If you want to connect a third component after the second , simply not click on the link already drawn but on the terminal of the first element as shown below if . The connection point will automatically .

        

 

 

 

 

 

 

 

In case of son would overlap , as shown below , it is sufficient to click a son concerned, it becomes red and can then be shifted so as to be distinguished from the other thread .

          

3 . Printing diagrams and export

 Once the plan is finalized, we can TEQ is : - D

e launch direct printing or save as PDF or

Postscript via

print icon

To export the drawings to an image file (JPEG , PNG , Bitmap and SVG ) via

” File ” in the menu bar .

 

The image size can be changed, security settings , format, options also made .

4 . Edit an item

Here is one of the strengths of this software and free software in general

: The freedom to adapt

software according to these needs. Among these requirements , the user can for example edit a component provided by default. Note that this is only possible for the system administrator , other users can not modify shared content between different sessions . Edit component is as follows : Click the right mouse button on the target component in the

Panel elements . Select “Edit element”.

We took the example of a simple circuit breaker that we want to edit. It can be selected either in the collection of components , or if the pattern is already .

  

Several geometric shapes can be added from the toolbox basic element “ terminal ” must be used by all components against . Care must be taken to adapt the framework to the size of the component

avoid

some display problems due to a disproportionate scale. The button display in configuration displays all the parameters characterizing a piece of the scheme: The color, position, orientation , etc. and modify them if necessary . This version of TEQ adds , adjust elements freely pixel by pressing the Ctrl key during the operation.

   

 5. Creating a new element

TEQ provides the ability to create yourself a new item. To do this, simply

click on the icon

 

A window appears, in laqelle must be specified category where the element is created , its

name ( including language ), the dimensions of the new element and the point of entry of the element with the mouse , and finally the possible orientations. The design of the new component is exactly the same as for editing.

The official website of qelectrotech provides a space for exchanging elements for

user community.

 

C. Conclusion

 We discovered a more free software in the field of Electrical Engineering . Qelectrotech is a young but very promising free software as evidenced by the notoriety he already bénificie within academic and professional electrical engineering. The number of developers increases dramatically , and major improvements are planned , both in terms of functionality in terms of graphics .

 

 

 

 

 

 

 

 

 

 

 

 

 

 

references

http://fr.wikipedia.org/wiki/QET_ ( qelectrotech ) http://fr.wikipedia.org/wiki/Logiciel_libre http://qelectrotech.org/

 

nomenclature

Qelectrotech 0.22 Original Idea : Benedict Ansieau Programming: Xavier Guerrin Translated into English, Spanish, Russian , Portuguese and Czech. GNU / race license