Development of a mathematical model of information serial redundancy of management information systems of the aircraft fire alarm
| Autor: | Anastasiia Degtiarova, Ali Al-Ammouri, Petr Dyachenko |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
A priori probability
Fire detection Computer science 020209 energy Applied Mathematics Mechanical Engineering 0211 other engineering and technologies Energy Engineering and Power Technology 02 engineering and technology Industrial and Manufacturing Engineering Computer Science Applications Reliability engineering Management information systems Bayes' theorem Control and Systems Engineering Management of Technology and Innovation 021105 building & construction 0202 electrical engineering electronic engineering information engineering Information system Redundancy (engineering) A priori and a posteriori False alarm Electrical and Electronic Engineering |
| Zdroj: | Eastern-European Journal of Enterprise Technologies. 2:4-10 |
| ISSN: | 1729-4061 1729-3774 |
| Popis: | The issues of improving the effectiveness of information systems by means of serial information redundancy due to an increase in the reliability of control of dangerous flight situations on board aircrafts are considered. The use of microprocessor equipment taking into account the physical principles of connection of sensors to determine dangerous situations on board aircrafts is proposed. The method for serial switching of detectors (with memory), considering a priori information according to the Bayes' method is proposed. The mathematical and graphical dependencies of the a priori probability of fire detection on the sensor quality with the given values of a posteriori probability and the number of repeated requests α=f(P 1 , g, k) are obtained. It is found that, in order to implement serial information redundancy, the following requirements shall be taken into account: high technical reliability of a particular information source; relatively large permissible information aging time; short correlation time of random technical faults, transient failures, fluctuation noise, etc. If the a priori probability a of a controlled phenomenon is low, the probabilities p 1 and p 2 change slowly with increasing k, and the probability p 3 (false alarm) can be quite high, in comparison with the probability of non-detection p 2 . If the probability a is sufficiently high, the probability p 1 effectively increases with increasing k, and the probability of non-detection p 2 will be greater than the probability of false alarm p 3 . |
| Databáze: | OpenAIRE |
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