Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a movable assembly, a driving assembly and a stopping assembly. The fixed assembly has a main axis. The movable assembly is configured to connect an optical element, and the movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly. The stopping assembly is configured to limit the movement of the movable assembly relative to the fixed assembly within a range of motion.

Abstract: A bladder urine volume monitoring system and a bladder urine volume monitoring method are provided. The bladder urine volume monitoring system includes at least one ultrasound patch, at least one muscle stimulation patch, and a control circuit. The ultrasound patch is configured to be attached to a surface of an organism to detect a urine volume in a bladder. The muscle stimulation patch is configured to be attached to the surface of the organism to stimulate a muscle of the bladder. The control circuit is coupled to the ultrasound patch and the muscle stimulation patch. The control circuit drives the ultrasound patch to detect the urine volume in the bladder in a first period. The control circuit drives the muscle stimulation patch to stimulate the muscle of the bladder in a second period.