Selecting The Right HD Resolution Screen Size For? Control Room

The primary purpose of a display wall in any control room is to provide situational awareness and a useful common operating picture for multiple operators to simultaneously view relevant information and collaborate in critical decision‐making processes.

Display systems in control rooms should be treated differently than display systems used in boardrooms, auditoriums, signage and short‐term viewing applications, because operators need to sit in front of the screens for longer hours monitoring critical information and handling incidents. The capability to interact efficiently with the display wall defines operational efficiency and alertness.

If the display wall screen size is not properly selected, the resulting strain on operator eyes can negatively affect operational efficiency. Your investment in the control room display system could be wasted.

Screen size, resolution of the individual screens, the resulting optimal visual acuity, sill height (distance from floor to bottom of screens) and available ceiling height are critically important considerations in effective control room design.

Optimal Visual Acuity is the maximum distance at which a person with normal vision can resolve the given pixel size. In a control room this is the recommended distance from the screen to the first row of operators. Beyond this optimal distance, resolution is wasted. Closer than this optimal distance, information space is wasted and the display may be fatiguing to the operators.

When designing a control room, you must consider:

Space between the first row of operators and screen. Depth of the operators’ desks (consoles) and the available space in between the console and screen should be considered to permit free movement in the control room.

Available ceiling height and sill height. Ensure that when seated or standing at the console, the operators have clear visibility of the entire image area. Often operators need to look over the monitor on their desk to the display wall. If the bottom of the screen is too low, important information may be lost and screen resolution is wasted.

To avoid eye strain, it is recommended that the closest operators to the display wall should not be able to see the pixel structure of the displays. Optimum viewing distance is the distance before pixel structure is detected.

It may also be worth noting that smaller displays would have more screen gap area than larger screens. The largest screen size that can meet the application’s minimum viewing distance would be preferred when considering screen‐to‐screen gap, cost (less units to fill the same size space) and power consumption.

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