The goal of this paper is to desigen a system for the detection and evaluation of the decrease of drivers’ attention. The paper refers to possible reasons and risks of a phenomenon called micro-sleep. It also describes the measurement methodology. The paper apprise of a new way of detection and evaluation of microsleep. The methods of fuzzy systém and knowledge systém is used. The state of the proband is assessed by classification modules F-COMS and C-COMS which were designed specifically for these systems. The paper also describes the individual frequencies of an EEG spectrum including their mutual dependencies in particular states and individual contributions in a detailed way. The conception of the proposed system for detection and evaluation of the decrease of attention ensues from the uniqueness of an individual, and the inaccuracy of measurement on humans, as well as from the universality of a systém construction, capable of detecting not only the inattention of a driver, but also his/her maximum concentration or pathological changes.
In the paper the problem of mathematical properties of B-operations and weak WB-operations introduced by the author for interpretation of connectives "and'', "or'', and "also'' in fuzzy rules is considered. In previous author's papers some interesting properties of fuzzy systems with these operations were shown. These operations are weaker than triangular norms used commonly for a fuzzy system described by set of rules of the type if - then. Monotonicity condition, required for triangular norms, is replaced by condition of positivity (negativity), i. e. operations must be only positively (negatively) defined. Weak B-operations may not fulfill associativity condition.