| Abstrakt: |
This article actualizes the problem of timely detection of changes in the parameters of the keyboard handwriting of operators of energy systems in order to prevent emergency situations as a result of a disorder in the psycho-physiological state of operators. To this end, it is proposed to develop a system for recognizing and monitoring users by keyboard handwriting, showing the factors influencing the development of various computer devices of the widest application, working with keyboard input devices. The task of recognizing users working on keyboard devices has been updated. A study of well-known work in the field of development of systems for identification and authentication of users by keyboard handwriting was carried out, methods, approaches, and mechanisms of identification were analyzed. New approaches to the development of user identification systems based on additional hardware are analyzed, which makes it possible to obtain new parameters of keyboard handwriting. An approach to user identification by keyboard handwriting by the speed of movement of the keys on the keyboard is proposed, where speed is understood as the process of changing the capacity of a contact pair of keys when it is pressed. A standard membrane keyboard was investigated, the capacity of a contact pair was calculated from the parameters of its components. In order to compensate for the parasitic capacitances of current-carrying lines, an integrated connection scheme through blocking capacitors is proposed, and parametric calculations are carried out. The time diagrams of the process of changing the total capacity of the keyboard when pressing and releasing the keys are obtained, the time intervals are investigated, the possibility of using this approach is the systems of user identification by keyboard handwriting is shown. [ABSTRACT FROM AUTHOR] |
