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Rip current is a narrow and strong current flowing from the coast to the sea through the wave area. It flows to the ocean and is perpendicular to the beach, and lasts for a short time.
So we designed a device to disturb the rip flow, and judge the occurrence of the rip flow by sensing the flow velocity and direction of the surface, and spray water at the narrowest position of the rip flow to disrupt the rip flow and slow it down, increasing the escape probability.of human.