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Fig. 1-6 Reflect
1.4.3
The surface of the walls, ceiling, floor and
curtain
IR is just like visible light, and can be reflected
by shining, smooth surface and absorbed by dark,
rough surface. The reflected light generally can help
by transmitting signals, and won’t cause any
damaging interference. In a room with shining,
smooth surfaces, the required power of the radiating
panel is lower than the room with dark, rough surfaces,
as curtain and carpet.
Otherwise, the reflecting effect can be very
different when the texture of the floor is different: the
shadow of the walls and furniture can interfere the IR
transmitting. But if we use enough radiating panels and
allocate them properly, this problem can be solved. At
the same time, it should be noticed that the radiating
panels cannot positioned to face the windows without
curtains, which can reduce the radiating effect. As
shown in Fig. 1-7, there is difference in the reflection
effects for floors of different texture.
Fig. 1-7 there is difference in the reflection effects
for floors of different texture.
1.4.4
The coverage of the radiating panel
In the system, the coverage is decided by
radiating controller’s carrier wave and the radiating
panel’s output power, and the coverage will be
enlarged when there are more radiating panels. The
radiating panels’ total radiant intensity is allocated in
the controller according to the amount of the carrier
wave, and when the used carrier wave increase, the
coverage’s percentage will decrease accordingly.
As shown in the following figure (the white
part),the crossing area of the radiation allocation
area and the receiving area of the people’s receiver
is the coverage. Within the coverage area, if the
radiating signal can reach the receiver directly, the
intensity of the direct signal can be enough to be
received. Here the following are some illustration
figures for installation for your reference:
15°installation figure
45°installation figure
80%
100%
40%
100%
Digital IR Language Distribution System User Manual
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