Train alarm triggering preventing device, has microphones detecting step of person who leaves from train and puts foot at ground, and sprayers or sprinklers spraying product towards incriminated person

摘要

The device has microphone systems that are positioned at a level of an external structure of a train. The microphones detect the step of a person who leaves from the train and puts the foot at ground. The microphones transmit the information directly or indirectly by radio waves or by cables to sprayers or sprinklers. The sprayers or the sprinklers spray a product towards an incriminated person.