Patent ID: 7227327

Claim:
A system for automatically returning a self-moving robot to a charger, the system comprising: the charger, including an infrared module, for emitting infrared light in response to a charging request signal received from the self-moving robot through a wireless transceiver and outputting an infrared emission signal according to the emission of the infrared light; and the self-moving robot for outputting the charging request signal to the charger when a battery voltage of the self-moving robot is lower than a reference voltage and moving back to the charger using image information input from a camera module in response to the infrared emission signal received from the charger, the self-moving robot including a microprocessor for controlling movement of the self-moving robot to return the self-moving robot to the charger, using position information of infrared light in a picture input from the camera module, if the infrared light is detected in the picture input from the camera module.