Skylight Design for Alzheimer patient / ARCH588 Interactive Design | USC

Kyle Konis, Ph.D, AIA
Studies have shown that light stimulation at the right time can help reduce daytime sleepiness and improve nighttime sleep.

In my design, the maximum amount of light is provided for patients at breakfast, lunch and entertainment time respectively, and the cumulative exposure time per day is 3-4 hours. At other times, especially 1-3 o 'clock at noon, the angle between the blade and the incident light can be increased to reduce the direct light and prevent glare, which can further improve the patient's mood. Therefore, I hope that the maximum amount of light can be adopted in my design during breakfast, lunch and entertainment time through the intervention of nursing staff, and the main purpose is to avoid direct light at other times.
I put the light sensor on the roof (Exterior). Because part of my scheme is designed to reduce the amount of direct midday light, put it on the roof was more conducive to collecting accurate data.
As mentioned earlier, right light stimulation can improve patient’s sleep. So, from 8 am to 9 am; 11am to 12 am; from 4 pm to 5:30 pm, nursing staffs can adjust the switch axis to change the amount of light into the maximum. Other times the aperture mainly working to avoid direct light by automatic regulation. Also, in my design, there is an Angle between the window hole and the roof, which is related to the average Angle of the sun height in different areas. This approach has greatly improved energy efficiency. At the same time, the rotation of the fan blade can give feedback according to the user's demand and the light intensity: when the sun is at its highest, the fan blade automatically turns horizontal, thus shielding a large amount of direct light.

However, in the prototype, at the time of day when direct light is the strongest, I try to minimize the amount of south light, and open the north skylight, also maintain a comfortable light environment by adjusting the indoor LED light.
Success / Failure Criteria
① Monitor indoor light intensity from 11 PM to 3 PM. Test whether the prototype can effectively reduce direct sunlight when the light is strong enough. (This helps decide the rotation of the louver based on the intense of sunlight)
② When the direct light really strong the south facing louvers will close, also at that time the north side of the skylight will open. So, it is also important to measure the amount of natural light entering the room at that time. To make sure that whether if the amount of light intake can meet the daily needs. (This helps me design the angle of the north side louver when the south side opening of the skylight totally close)
③ In the process of making physical models, I found that the friction between bars is also an important factor in determining the success of Prototype. Reducing frictional resistance is the key to ensuring that Louvers follow the motor in repeated tests.
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