The invention relates to the field of indoor positioning and aims at solving existing problems in the prior art. The invention provides a UWB-based positioning device and a railway
station children positioning method. Based on the UWB technology, the position positioning is carried out. Based on the UWB
positioning system of an extensible
base station, the high-precision positioning of children in a
large range can be realized. Therefore, children can be effectively prevented from getting lost. The
positioning system is mainly used for positioning children in a waiting room. According to the invention, a positioning
label sends the positioning information to a
base station unit in real time within the detection range of the
base station unit. The base
station unit establishes a coordinate
system based on the mutual positioning of a main base
station and an auxiliary base station, measures the real-
time distance of the positioning
label corresponding to the positioning information sent by the positioning
label in communicant with the base station unit, and transmits back the obtained real-
time distance information to a monitoring terminal. The monitoring terminal analyzes the positioning position of the corresponding positioning label according to the distance information uploaded by the base station unit. If the positioning position of the positioning label exceeds a threshold value range, an
alarm signal is sent out.