title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð°Ð²ÑÐ¾Ð½Ð¾Ð¼Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð¶Ð°ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð·Ð²ÐµÑÐ°ÑÐµÐ»Ñ Ñ ÐºÐ»Ð°ÑÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸ÐµÐ¹ Ð¸ÑÑÐ¾ÑÐ½Ð¸ÐºÐ¾Ð² Ð´ÑÐ¼Ð° Ð¸ Ð²ÑÑÑÐ¾ÐµÐ½Ð½ÑÐ¼ Ð¾Ð¿Ð¾Ð²ÐµÑÐ°ÑÐµÐ»ÐµÐ¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Development and research of an autonomous fire detector with smoke source classification and built-in alarm
Creators: name: ÐÐ¾ÑÐ°Ð±Ð»ÐµÐ², ÐÐ»ÐµÐºÑÐµÐ¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÐÐ¾Ð¶Ð°ÑÐ½Ð°Ñ ÑÐ¸Ð³Ð½Ð°Ð»Ð¸Ð·Ð°ÑÐ¸Ñ
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description: This work is devoted to the development of a fire detector with a classification of smoke sources, which theoretically will reduce the number of false positives. As part of the work, existing approaches to the work of fire detectors were analyzed. Based on the circuitry of the optoelectronic detector, a circuit of a two-spectral optoelectronic device was designed that allows you to investigate the responses of the photodiode to the flashes of LEDs in two frequency ranges. For the prototype, a number of experiments were carried out in a smoke channel with various sources of smoke. Dependencies of photodiode response values on optic smoke density and optical density rise time are obtained, and ratio of UV and IR channel responses for different fumes is calculated. The feasibility of filtering fumes and thereby reducing false positives has been proven. Based on the results obtained, serial production of detectors with the ability to filter various sources of smoke can be organized. Also, during the work, options for implementing a power source for LED circuits for light annunciators were considered. A comparative analysis of their parameters was carried out and the best was chosen. Based on it, the operating circuit of the power supply is designed. Tests of the prototype with various light boards were carried out. Based on the results obtained, it is possible to mass-produce detectors with the ability to filter various sources of smoke and VAD alerts in accordance with EN 54-23 standards.