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BOYA is a water level warning, mainly for the old traffic tunnel, low-lying areas and sunken pedestrian tunnel. By water level measurements and alerts to remind water height of cars and people. Asia rainstorm days and floods are common, and more alpine tunnels and old sunken tunnel maintenance more difficult, to cause drainage is not easy, in the heavy rain days, many drivers can not see clear in front of the water level at anchor or dead fire; Moreover, in low-lying areas due to lighting and other effects on pedestrian difficult to find lower-lying areas and lead to falls , this product is the goal of this part of the population.
Guangzhou College of South China University of Technology