Bosch INTEGRUS Specifications download pdf (Page 12)

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8 | System Description and Planning

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Figure 10: The texture of the material determines how much light is reflected

and how much is absorbed

Problems caused by shadows from walls or furniture can be

solved by ensuring that there are sufficient radiators and

that they are well positioned, so that a strong enough infra-

red field is produced over the whole conference area. Care

should be taken not to direct radiators towards uncovered

windows, as most of this radiation will subsequently be lost.

Positioning the radiators

Since infra-red radiation can reach a receiver directly and/or

via diffused reflections, it is important to take this into

account when considering the positioning of the radiators.

Though it is best if receivers pick up direct path infra-red

radiation, reflections improve the signal reception and

should therefore not be minimized. Radiators should be

positioned high enough not to be blocked by people in the

hall (see figures 11 and 12).

Figure 11: Infra-red signal blocked by a person in front of the participant

Figure 12: Infra-red signal not blocked by a person in front of the participant

The figures below illustrate how infra-red radiation can be

directed to conference participants. In figure 13, the

participant is situated clear from obstacles and walls, so a

combination of direct and diffused radiation can be

received. Figure 14 shows the signal being reflected from a

number of surfaces to the participant.

Figure 13: Combination of direct and reflected radiation

Figure 14: Combination of several reflected signals

For concentrically arranged conference rooms, centrally

placed, angled radiators located high up can cover the area

very efficiently. In rooms with few or no reflecting surfaces,

such as a darkened film-projection room, the audience

should be covered by direct path infra-red radiation from

radiators positioned in front. When the direction of the

receiver changes, e.g. with varying seat arrangements,

mount the radiators in the corners of the room (see figure

15).

If the audience is always directed towards the radiators, you

do not need radiators at the back (see figure 16). If the path

of the infra-red signals is partially blocked, e.g. under

balconies, you should cover the ‘shaded’ area with an

additional radiator (see figure 17).

The figures below illustrate the most effective positioning of

the radiators:

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 45 46

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Bosch INTEGRUS Specifications Page 12

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