The digital sound system (DSS) was added to the patent plan to create an interactive feature for the final product, which was decided during a team consensus. The DSS system was designed to create mutual audio feedback in line with the educational goals of the plan based on the client's behavior in the playground. This system greatly reduces the tasks of the assistant in the environment while making teaching fun and attractive by producing quick audio feedback.
The DSS system monitors the client's movements in the playground and broadcasts appropriate audio feedback when necessary, defined according to the educational goals of the plan. For instance, if the client moves the ball on the bar upwards, the voice feedback "move up" can be played as a voice message.
Additionally, the DSS system can be used as an evaluation system. It broadcasts scenarios to the client in the form of a voice message and asks them to perform the behavior appropriate to that scenario. The system examines the client's behavior concerning their awareness and evaluates it, giving points as needed. For example, the audio message "move the ball up" could be played for the client, and the system will wait for the client to move the ball up for a specific time before scoring their movement.
The team faced several challenges in designing the DSS system. The product required simple implementation and low-priced parts, deterministic and error-free behavior, low-cost and ease of system maintenance, and the use of non-hazardous parts for children, particularly for blind children.
The playground movements were divided into three categories: balance, doors and drawers, and balls and bars. Currently, the DSS system is not involved in the balance part. Detecting customer interaction in doors and drawers is almost straightforward and can be easily detected by various sensors. However, the main challenge is in the balls and bars section.
The DSS system needs to detect the position of each of the balls about the bars to detect the change and direction of their movement by the client. The team evaluated various methods to detect the balls' movement accurately, taking into account the rods' length and the balls' size and weight. Several methods were examined, with some being prototyped to investigate the issue more deeply.
In conclusion, the DSS system was added to the patent plan to make teaching more fun and reduce the assistant's tasks in the environment. The team faced several challenges in designing the system, particularly in detecting the movement of the balls and bars. Despite the challenges, the team concluded the final solution, which will be useful in achieving the educational goals of the plan.
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