Patent ID: 8660736

Claim:
A method for navigating an autonomous mobile device to a base station that sends out a main navigating signal, the autonomous mobile device including a movable case, a main detector disposed on the case, and a control unit for controlling movement of the case, said method comprising the following steps of: a) when the main detector detects the main navigating signal, configuring the control unit to rotate the case in a first direction until the main detector fails to detect the main navigating signal, and configuring the control unit to set a first time point when the main detector fails to detect the main navigating signal; b) configuring the control unit to rotate the case in a second direction opposite to the first direction until the main detector fails to detect the main navigating signal, and configuring the control unit to set a second time point when the main detector fails to detect the main navigating signal; c) configuring the control unit to compute a calibration time according to the first and second time points; d) configuring the control unit to rotate the case in the first direction by the calibration time so as to make the main detector substantially point toward the base station; and e) configuring the control unit to move the case toward a direction pointed by the main detector.