In the future, speech unquestionably will become the primary means of communication between humans and machines. New applications of artificial neural networks are capable of recognizing human speech and analyze the meaning of the recognized text. The condition of the effectiveness of two-way human-machine voice communication is to apply the mechanisms of command verification and correctness. In this paper there is a review of the selected issues on recognition and safety estimations of voice commands in natural language given by the operator of the technological device. A view is offered of the complexity of the recognition process of the operator‘s words and commands using neural networks made of a few layers of neurons. There is also an intelligent system of two-way voice communication between the technological device and the operator presented, which consists of the intelligent mechanism of operator identification, word and command recognition, command syntax and result analysis, command safety assessment, technological process supervision as well as operator reaction assessment. The paper presents research results of speech recognition and automatic command recognition as well as command safety estimation with artificial neural networks. and Obsahuje seznam literatury
The requirements on transportation systeins concern not only the quantitative and qualitative aspects of transportation activities, but also still more aspects of their reliability and safety. This concerns not only the transported subjects or goods, but also environment.
The losses caused by failures of transportation activities reach even now a very high level and, if they are not limited by systematic research and preventive activity, they will reach a quite tremendous level soon.
However, practically all the contemporary transportation vehicles, trains, ships and planes and also all the transportation systems need, for their proper operation, interaction with human beings who drive them, control them or use them and maintain them.
In spite of the fact that a significant progress was made in recent years as concerns the transportation systems automation; the fully automatic transportation system in use is still for-seen in considerably far future.
Analyzing the reliability and safety of transportation, one finds that the activity of human being is the weakest point. The technical reliability of almost all transportation tools hais improved quite a lot in recent years; however, the human subject interacting with them has not changed too much, as concerns his/her reliability and safety of the respective necessary interaction.
Therefore there is an urgent necessity to improve it, and possibilities how to increase it will stay more and more in the focus of our interest.
In this contribution, the overview of the related problems is being made and open problems for further research in this area are discussed.
The voice communicaton between technological devices and the operator becomes a stronger challenge as technology becomes more advanced and complex. New applicatons of artificial neural networks are capable of recognition and verification of effects and safety of commands given by the operator of the technological device. In this paper there is a review of the selected issues on estimation of results and safety of the operator‘s commands as well as supervision of the technological process. A view is offered of the complexity of effect analysis and safety assessment of commands given by the operator using neural networks. There is also an intelligent two-way voice communication system between the technological device and the operator presented, which consists of the intelligent mechanisms of operator identification, word and command recognition, command syntax and result analysis, command safety assessment, technological process supervision as well as operator reaction assessment. The first part of the paper introduces a new concept of modern supervising system of the technological process using and intelligent layer of two-way voice communication between the technical device and the operator and discusses the general topics and issues. The second part is devoted to a discussion of more specific topics of the automatic command verification that have led to interesting new approaches and techniques. and Obsahuje seznam literatury