Abstract: A method of movement tracking includes: performing, when it is determined that a strength of an external signal is greater than a threshold, positioning based on the signal to generate a first record; performing, when it is determined that the strength is not greater than the threshold, measurement of a movement variation to generate a second record; performing, when it is determined that the strength increases from being not greater than the threshold to being greater than the threshold, positioning based on the signal to obtain coordinates of an exact position; and computing corrected data based on the second record and the coordinates, and generating a movement path record based on the first record and the corrected data.

Abstract: A controlling method of a robot lawn mower includes a mowing procedure, an interruption determining procedure and an interrupting procedure. The interruption determining procedure includes steps of receiving sensing data indicating a current sensing result related to at least one of surrounding environment or an operation status of the robot lawn mower, and determining whether an interruption condition related to at least one of an environment factor or an operation factor of the robot lawn mower is met. When it is determined that the interruption condition is met, the interrupting procedure is executed, and the robot lawn mower moves to a preset standby location.

Abstract: A method of movement tracking includes: performing, when it is determined that a strength of an external signal is greater than a threshold, positioning based on the signal to generate a first record; performing, when it is determined that the strength is not greater than the threshold, measurement of a movement variation to generate a second record; performing, when it is determined that the strength increases from being not greater than the threshold to being greater than the threshold, positioning based on the signal to obtain coordinates of an exact position; and computing corrected data based on the second record and the coordinates, and generating a movement path record based on the first record and the corrected data.