1. Alcínia Zita Sampaio Miguel M. Ferreira Daniel P. Rosário
Interactive virtual model of building management control The lighting system
O trabalho que passo a apresentar, insere-se na área do comportamento não linear de estruturas porticadas de betão armado, tendo como objectivo o estudo do problema dos efeitos de 2ª ordem.
Alcínia Zita Sampaio
Miguel M. Ferreira
Daniel P. Rosário
Technical University of Lisbon, IST/ICIST, Department of Civil Engineering and Architecture, Lisbon, Portugal

2. Research project in maintenance
The main aim of the research project is to develop a virtual interactive model as a tool to support decision-making in the planning of building maintenance and facilities management:
The virtual model to be implemented will give the capacity to allow the user to transmit, visually and interactively, information related to the components of a building, defined as a function of the time variable;
In addition, the analysis of solutions for repair work/substitution and inherent cost are predicted, and the results being obtained interactively and visualized in the virtual environment itself.
Interactive virtual model of building management control: the lighting system

3. The lighting interactive system
The interactive virtual prototype concerns the management of lamps in a building, and it allows:
The examination of the physical model, visualizing, for each element modelled in 3D and linked to a database;
The corresponding technical information concerned with the use and a statistic predicted break-time of the bulbs, calculated for different points in time during their life;
The control of a lamp stock, the constant updating of lifetime information and the planning of periodical local inspections are attended on the prototype.
Interactive virtual model of building management control: the lighting system

4. 3D geometric model of a house
First, the 3D geometric models of building case and the some light equipment were created.
Interactive virtual model of building management control: the lighting system

5. The interface of the lighting prototype
The interface was defined to be used in a very intuitive way. The model is organized in order to:
Create an identity to each new lamp inserted in the 3D model of the building;
Search in a general data base an adequate/compatible bulb to that lamp;
Interactive virtual model of building management control: the lighting system

6. The interface of the lighting prototype
Insert the building place and the installation date of the new bulb and the average number of hours of the predict functionality;
The coordinates of each bulb position must be kept. Movie2, movie6
Interactive virtual model of building management control: the lighting system

7. The interface of the lighting prototype
Planning a visual inspection periodicity to the real place;
Consult and update the correspondent bulb stock established for the building;
Walk-through the interior of the house model and observe the location and the information concerning each installed lamp.
Interactive virtual model of building management control: the lighting system

8. Monitoring the facilities maintenance
The calculation of the predicted break-time is based on the installation data and the statistic period of bulb lifetime;
The percentage of use changes with the date when the model is used (the colour is associated to the percentage of use);
Interactive virtual model of building management control: the lighting system

9. Monitoring the facilities maintenance
To allow the substitution of an element the compatibility between the old bulb and the bulb to be installed must be verified; After each replacement the stock is updated.
Interactive virtual model of building management control: the lighting system

10. Expected benefits
The virtual model allows the access to all the information of the each identified element:
The database contains the information necessary for the interaction with the model in function of the parameter time (installation date, period of average lifetime, next periodic inspection date and the actual date of interaction with virtual model).
The result of the research and the adjustments/actualizations necessary to carry out are allowed through the interface of the characteristics of the each identified element.
Interactive virtual model of building management control: the lighting system

11. Expected benefits
Bulbs, for maintenance proposes, has a discrete lifestyle, so it have to be substituted when the real bulb is broken;
The model alerts when the predicted broken date is achieved;
This verification could be occasionally (by the observation of the state of the bulb in the real place) or by periodic visits (this period was established and incorporated in the virtual model in order to alert of the necessity of inspection to the place).
Interactive virtual model of building management control: the lighting system

12. Expected benefits
The virtual model of lighting management can support:
. Analyses of preventive maintenance, the application in larger building and the study of the effects of lighting intensity.
Interactive virtual model of building management control: the lighting system

13. Future developments The future work over the model must be based on:
Systematization of concepts of planning of maintenance;
Inclusion of new elements concerning other building components in database (namely, closures of interior and exterior walls, surfaces of floors, roofs and doors and windows elements);
Analysis the methodology to attend the application of the virtual system over other situations. In this way, it is promoted the application the system to any model 3D of buildings;
Each concrete situation to be monitored, the virtual model will allow the day-by-day control of the maintenance activity.
Interactive virtual model of building management control: the lighting system