Development of Multiband Flame Detector with Fuzzy Correction Block

Author(s):  
Andrii Kushnir ◽  
Bohdan Kopchak
Keyword(s):  
2016 ◽  
Vol 52 (1) ◽  
pp. 63-80
Author(s):  
Miroslav Bistrović ◽  
Jasmin Čelić ◽  
Domagoj Komorčec

Nowadays, ship’s engine room is fire protected by automatic fire fighting systems, usually controlled from a place located outside the engine room. In order to activate the water mist extinguishing system automatically, at least two different fire detectors have to be activated. One of these detectors is a flame detector that is not hampered by various air flows caused by ventilation or draft and is rapidly activated and the other is smoke detector which is hampered by these flows causing its activation to be delayed. As a consequence, the automatic water mist extinguishing system is also delayed, allowing for fire expansion and its transfer to surrounding rooms. In addition to reliability of the ship’s fire detection system as one of the crucial safety features for the ship, cargo, crew and passengers, using a systematic approach in this research the emphasis is placed on the application of new methods in smoke detection such as the computer image processing and analysis, in order to achieve this goal. This paper describes the research carried out on board ship using the existing marine CCTV systems in early stages of smoke detection inside ship’s engine room, which could be seen as a significant contribution to accelerated suppression of unwanted consequences.


1967 ◽  
Vol 50 (6) ◽  
pp. 1284-1286
Author(s):  
Frederick C Gross ◽  
John H Jones

Abstract Propylene glycol in cosmetics can be determined by co-distillation in water followed by GC measurement of the distilled propylene glycol on a Porapak Q column and a hydrogen flame detector. The procedure has been successfully applied to a number of commercial samples; 14 of 15 sample recoveries were between 95 and 102%, the other recovery was 92%.


1999 ◽  
Author(s):  
Zoran G. Djuric ◽  
Tatjana Dankovic ◽  
Zoran S. Jaksic ◽  
Danijela Randjelovic ◽  
Radomir Petrovic ◽  
...  

1967 ◽  
Vol 5 (7) ◽  
pp. 381-382 ◽  
Author(s):  
W. A. Aue ◽  
C. W. Gehrke ◽  
R. C. Tindle ◽  
D. L. Stalling ◽  
C. D. Ruyle

Author(s):  
Nada Jovičić

The aim of this paper is to analyze possibilities of metal fire detection using various types of fire detectors, and find the most convenient type of detector. Metal fires belong to class D fires, and demand extinguishing agents which work by smothering and heat absorption. On the other hand, it is too risky to use heat generated by fire for early-stage detection due to high heat release rate. Some metals burn with smoke, but during the fire, most of them produce significant ultraviolet and infrared component of radiation which can be used for detection. Therefore, this paper analyzes the possibility of using a flame detector in case of metal fires, as well as sitting and spacing of flame detectors for metal fire detection at its earliest stage.  


1974 ◽  
Vol 57 (3) ◽  
pp. 570-575
Author(s):  
Esther J Lorah ◽  
Delbert D Hemphill

Abstract Carbaryl (1-naphthyl methylcarbamate), Mesurol® (4-methylthio-3,5-xylyl methylcarbamate), promecarb (m-cym-5-yl methylcarbamate) , Zectran® (4-dimethylamino-3,5-xylyl methylcarbamate), and 4-dimethylamino-3,5- xylenol were successfully chromatographed on Chromosorb W support, surface-modified with Carbowax 20M. The intact compounds were detected by means of the nitrogen or sulfur response of an alkali flame detector. Calibration curves were linear over the range 4 to 2000 ng. Average pesticide recoveries of 90—100% were obtained from fortified vegetable samples.


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