公开(公告)号：US10805771B1

公开(公告)日：2020-10-13

申请号：US16545251

申请日：2019-08-20

Applicant: Goldtek Technology Co., Ltd.

Inventor： Tung-Sheng Tu ,  Fu-Yuan Tsai

IPC: H04W4/029 ,  G01S19/25 ,  G08B21/02 ,  H04W4/90 ,  G01S19/35

Abstract: A method for sending location information continuously of a user in need of rescue and carrying a location tracking device of the disclosure includes determining whether a rescue-needed signal is received, and if so controlling a first positioning module of the location tracking device to send a first positioning signal. Determining whether a power level of the location tracking device is more or less than a predetermined power level and turning off the first positioning module if less. If so, the location tracking device sends a second positioning signal when the power level is less than the predetermined power level, the power consumption of the second positioning module being less than that of the first positioning module. Thereby, transmission of a rescue signal is enabled for an extended period and over a longer distance.