Cleaning system and cleaning method

A cleaning method, comprising:

• configuring a fan-motor assembly of an air suctioning device to generate a suction force to suction outside air through an air flow passage, wherein the air suctioning device is disposed in a main body, the fan-motor assembly is disposed in the air flow passage, and a driving system is disposed in the main body and includes a plurality of wheels and a motor;
• configuring a light source to emit light to the air flow passage;
• configuring an optical sensor to capture a plurality of successive image frames from the air flow passage;
• configuring a processing unit electrically connected to the optical sensor, a memory and the driving system to:
• obtain a first image frame and a second image frame from the plurality of successive image frames;
• compare the first image frame with the second image frame to identify a plurality of dust particles;
• obtain at least one particle feature of the plurality of dust particles, wherein the at least one particle feature includes a particle size, a particle quantity, a particle density, a particle type, and/or a particle speed;
• determine a current cleanness condition according to at least one particle feature;
• control the motor to drive the wheels to move or rotate the main body according to a cleaning strategy that defines a cleaning frequency and a cleaning route for a target region, wherein the memory is configured to store the cleaning strategy, an image recognition process, and a plurality of cleaning path corresponding a plurality of specific particle types, respectively;
• adjust the cleaning strategy according to the current cleanness condition;
• execute the image recognition process to identify the particle type of the plurality of dust particles;
• determine whether or not the particle type of the dust particles match one of the specific particle types;
• and
• re-arrange the cleaning route according to the cleaning path corresponding to the one of the specific particle types.