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Combination Matrix:
Combination Matrix:
Shown above is the combination matrix, which in the top section lists various design options for the different aspects of the product. by combining these aspects in different ways, many new designs options can be considered. The bottom section of the table shows several combinations the team considered during the initial design phase. the team decided Combination 2 and Combination 5 were the best options out of the ones generated using a screening and selection process. The team then created sketches for these two designs, which are shown below
Combination 2
Combination 2
Combination 2 utilizes a differential pan-tilt mechanism, such as the system shown on the right below. This system involves two gear trains that connect with a bevel gear. The lower gear rotates the entire shaft and the bevel gear rolls across the upper gear. The bevel gear rotating is what allows for the system to tilt upwards and downwards. This results in the vertical tilt speed being proportional to the difference in speeds of the two motors. Although this does require more calculations as both motors are no longer independent, it allows for full 360° movement with no restrictions other than wire tangling. Additionally, this is the only design that allows both motors to operate parallel to each other. This differential motor design was well liked by the group.
Combination 5
Combination 5
Combination 5 is a table-mounted design with a central pole that rotates. The built-in screen is placed on a tilting joint protruding from the side. At the top of the pole is a fixed 360-degree camera which provides a full all-around view to the remote user. Wherever the remote user looks within this FOV, the screen moves to present their face to that location. The major drawback of 360-cameras is that they are very expensive. Since the screen already needs to follow the user's gaze, it is advantageous to have a regular camera lens follow the same movement. However, 360-cameras do create the most immersive experience for the remote user as they are unrestricted in where they can look.
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