Abstract: A suction force adjustment method is provided. An optical detection unit is disposed on a suction path of a suction pipe to detect an object flowing through the suction pipe. Physical features of the object are determined according to a sensing result of the optical detection unit. A suction force of a suction unit is regulated based on the physical features of the object.

Abstract: A suction device and a suction force adjustment method thereof are provided. An optical detection unit is disposed on a suction path of a suction pipe to detect an object flowing through the suction pipe. Physical features of the object are determined according to a sensing result of the optical detection unit. A suction force of a suction unit is regulated based on the physical features of the object.

Abstract: An optical detection device and a detection method thereof are provided. A linear light source provides a light curtain formed by multiple light beams, the light curtain is located on a transportation path of transporting an object to be detected. A sensor set senses the part of light beams not interrupted by the object to be detected, so as to generate a sensing signal with various strengths. A control circuit determines a physical characteristic, moving speed and position of the object to be detected according to the strength of the sensing signal.

Abstract: A suction device and a suction force adjustment method thereof are provided. A detecting device collects sound generated when the suction device executes a suction operation to obtain characteristics of a sound signal. The detecting device determines a clogging degree of a filter disposed on an exhaust vent of a suction unit, an airflow velocity in a suction pipe, a material of the suctioned surface, and a degree of closure between a suction port of the suction device and the suctioned surface according to the characteristics of the sound signal. A control host adjusts a suction force of the suction unit or adjusts the degree of closure between the suction port of the suction device and the suctioned surface according to a detected result of the detecting device, and provides warning information for cleaning or replacing the filter.

Abstract: A suction device and a suction force adjustment method thereof are provided. An optical detection unit is disposed on a suction path of a suction pipe to detect an object flowing through the suction pipe. Physical features of the object are determined according to a sensing result of the optical detection unit. A suction force of a suction unit is regulated based on the physical features of the object.

Abstract: An optical detection device and a detection method thereof are provided. A linear light source provides a light curtain formed by multiple light beams, the light curtain is located on a transportation path of transporting an object to be detected. A sensor set senses the part of light beams not interrupted by the object to be detected, so as to generate a sensing signal with various strengths. A control circuit determines a physical characteristic, moving speed and position of the object to be detected according to the strength of the sensing signal.