#$%^&*AU2019210641A120200220.pdf#####ABSTRACT The present disclosure relates to a lawn mower robot, a lawn mower robot system, and a control method of the lawn mower robot system, whereby a 5 position change of a signal transmission element is detected based on a result of receiving a signal transmitted from the signal transmission element, and a present position of the signal transmission element is reflected in an area map.1/12 FIG. 1A 500 1 200 1200 100 1000, 200 200 200 FIG. lB 10 100 I MAIN BODY 11 DRIG UNIT I 12~J E 13 NCMIATON UNIT 20-ROLE