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Multitouch Table FH Ingolstadt (Quelltext anzeigen)
Version vom 24. September 2011, 12:13 Uhr
, 24. September 2011keine Bearbeitungszusammenfassung
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Total falsches 3D-Modell: [[File:Mtprojekt-fh-sketchup.skp]] - korrekte version folgt ;)
== MTT-Construction ==
'''General Remarks'''
In principle the Multitouch Table (MTT) consists in a box with the multi-touch screen mounted on top in the shape of a cube. For more extensive service work the touch screen can be simply removed from the top.
Smaller service adjustments on components like mirror, camera, or beamer can be accomplished
via a second service opening on the back of the table.
The size of the lower body is defined by the distance of the beamer and the actual size of the touch screen in order to achieve
a non-distorted picture. In this respect the actual shape of the lower body may differ when using different components.
'''Box'''
All parts for side walls were manufactured using 16mm 3-layer-laminated sheets of wood and for bottom was using 19mm 3-layer-laminated sheets to guarantee maximum stiffness of the corpus. The only exceptions are the square-shaped timber pieces which serve as support for the bottom- and touch screen glass plate.
The cover plate of the service opening on the back is mounted with a hinge band on the bottom and a latch on the top which allows the door to be opened and folded down.
A glued wood molding at the inner side of the opening serves as the body stop. Additionally, an air intake filter was installed into the back door. To prevent an overheating of the beamer two ventilators are installed on the side of the beamer’s ventilator air exhaust.
At last four wheels were screwed on to the bottom plate.
The electrical supply for all individual components is realized with a rubber sheathed cable for light mechanical stress (3x1,5 mm²). This cable feeds four on the bottom plate mounted sockets inside, of which two can be shut off. The remaining two sockets for beamer and ventilator cannot be turned off in order to allow a period of continued ventilation to cool the beamer down.
The beamer mount consist of a piece of L-shaped bent 2mm thick sheet metal, which is mounted perpendicular onto the center of the front wall and can be tilted. The beamer hangs on an 8mm threaded rod. A lock nut serves to secure and arrest the beamer in its position.
The reflecting mirror is mounted in the center position on the bottom board. Fine tuning of the mirror is achieved by changing the angle via a threaded rod and a butterfly nut.
'''Touch Screen'''
Four 20 cm long square-shaped timber pieces were glued to the four corners inside of the touch screen frame. They ensure primarily a tight fit of the touch screen with the lower frame, and secondly protect the circuit boards installed on its backside. The top cover frame is made out of stainless steel. It protects the LEDs and is secured in its place at the corners of the frame. This completes the project.
During every state of the development and construction of the MTT achieving a maximum light density has been a major objective to reach a best quality product.
== Electronics ==
== virtual band markus ==
gabs noch was?
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