The present application is directed to a system providing automatic and manual control of a brake lever on band brake drawworks of a wellbore drilling rig. In the method, at least a pair of carbon fibers capable of collecting at least microorganisms are immersed in for-treatment water, potentials of opposite polarities are applied to the carbon fibers, and the polarities of the potentials are switched at a predetermined time interval so as to adsorb the microorganisms on the carbon fibers. The aim of the invention is to improve one such rotating regulating device in such a way that in its precise and reproducible, and can be especially automatically actuated. Conflicts between the data received from the image-data acquisition system and the data requested by the user are resolved by a set of prioritizing rules to determine the data transmitted to the user.