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- W2609718486 abstract "We conducted a theoretical analysis of the known method for improving performance speed of a maximal thermal fire detector under the action of temperature perturbation in the environment during fire in the interval of defining the temperature. It is demonstrated that the main shortcoming of this method is that the improvement in performance of a fire detector under complicated conditions is achieved by reducing the time constant of a detector. This leads to the growth in fluctuations of the output signal, reduces accuracy in determining the temperature and increases the number of false triggering in such detectors.Theoretical substantiation of the proposed method to improve performance speed of MTFD is based on the dynamic correction of output signal from a thermal sensor in fire detector by the inertial-forced link with a transfer function whose inertial part's time constant is changed by time in the interval of temperature measurement. We proposed a rule for changing the time constant.A comparative analysis of the known and the proposed methods revealed that the new method provides for an increase in performance speed of a fire detector without increasing the fluctuations in the output signal. Increasing the speed of action relative to the mathematical expectation and dispersion of fluctuations in the output signal is achieved at different moments of time, which are much less than the time of actuation of the maximal thermal detector – 20 s. The method proposed allows us to increase performance speed of a fire detector relative to the mathematical expectation of the output signal larger than by 5 times, and relative to the dispersion of fluctuations in the output signal – by 1.5 times.The method we devised is recommended to improve the performance speed of maximal thermal fire detectors under complicated conditions for operation, specific to industrial enterprises of metallurgy and petrochemical sector, for the purpose of their efficient fire protection." @default.
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- W2609718486 date "2017-04-21" @default.
- W2609718486 modified "2023-10-16" @default.
- W2609718486 title "Development of a method to improve the performance speed of maximal fire detectors" @default.
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- W2609718486 doi "https://doi.org/10.15587/1729-4061.2017.96694" @default.
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