Clever Crosswalk
Crosswalks are dangerous for visually impaired pedestrians. Some pedestrian traffic lights emit a chirp signal to guide pedestrians across the road. Unfortunately, the warning is often too soft and hard to localize. Increasing the volume would affect surrounding residents. To solve this, we have designed a directed speaker, coupled with a pedestrian detector to guide blind pedestrians safely across the street while reducing noise disruption.
The pedestrian detector localizes pedestrians in a crosswalk. It sends the location coordinates to the directed speaker. The speaker is laid out in a phased array configuration, which enables it to send a concentrated beam of sound toward a specific angle. With this system, the warning is much louder, and easier to localize.
Log in or sign up for Devpost to join the conversation.