公开(公告)号：US20210243557A1

公开(公告)日：2021-08-05

申请号：US17049548

申请日：2019-04-23

申请人： DUBLIN CITY UNIVERSITY

发明人： Conor Brennan ,  Derek Molloy ,  Martin Trainor

IPC分类号： H04W4/024 ,  G01S1/70 ,  G01S1/74 ,  G01S5/02 ,  G08B7/06 ,  H04W4/02 ,  H04W4/029

摘要： The invention provides a navigation device comprising a docking portion configured to securely adhere to a surface and a unit having at least one of a visual, an audio or tactile indicator. The present invention provides a device which the user attaches to a wall or door or ground surface entered on the way into a building. A number of fixed devices then assist the user to retrace their route out of the building. In addition, the device can be configured to transmit essential information to a user located outside the building. The devices can also be configured to form a novel navigation communication system.