Abstract: A method, applicable in a self-propelled surface-traveling robot system, for returning to a primary charging station, where the robot system comprises a surface-traveling robot and at least two charging stations for charging the robot, comprising the following steps: S1: the robot establishes a map of an area; S2: one of the charging stations is set as the primary charging station and the position of the primary charging station is recorded in the map of the area; and S3: when finishing working, the self-propelled surface-traveling robot returns to the primary charging station according to the position of the primary charging station in the map of the area.

Abstract: A method for multipoint purification by a robotic air purifier, comprising the following steps: S1: establishing a coordinate map of an area to be purified; S2: the robotic air purifier moves within the area to be purified according to a preconfigured movement model, measuring air quality, remembering as level-1 pollution sources those points where a pollution value exceeds a preset threshold, and marking the coordinates of said points on the coordinate map; S3: when having completed its movement over the area to be purified, the robotic air purifier moves to each level-1 pollution source point and performs an initial purification process, while at the same time measuring air quality, continuing in this way until the air quality at all said level-1 pollution sources complies with requirements.

Abstract: A method, applicable in a self-propelled surface-traveling robot (1) system, for returning to a primary charging station, where the robot (1) system comprises a surface-traveling robot (1) and at least two charging stations for charging the robot, comprising the following steps: S1: the robot establishes a map of an area; S2: one of the charging stations is set as the primary charging station and the position of the primary charging station is recorded in the map of the area; and S3: when finishing working, the self-propelled surface-traveling robot (1) returns to the primary charging station according to the position of the primary charging station in the map of the area.

Abstract: A method for multipoint purification by a robotic air purifier, comprising the following steps: S1: establishing a coordinate map of an area to be purified; S2: the robotic air purifier moves within the area to be purified according to a preconfigured movement model, measuring air quality, remembering as level-1 pollution sources those points where a pollution value exceeds a preset threshold, and marking the coordinates of said points on the coordinate map; S3: when having completed its movement over the area to be purified, the robotic air purifier moves to each level-1 pollution source point and performs an initial purification process, while at the same time measuring air quality, continuing in this way until the air quality at all said level-1 pollution sources complies with requirements.