نتایج جستجو برای: fire detector
تعداد نتایج: 101184 فیلتر نتایج به سال:
The aspirating smoke detector (ASD) is one of the most critical pieces equipment for detecting in a protected area when fire occurs. It has more advantages than conventional because it can be used extreme conditions, such as cold storage facilities or hot aisle containment areas. ASD uses fan to draw air from into pipe network system via holes. sucked transported sensing chamber detect smoke. I...
fire is one of the most dangerous phenomena in the world which yields main damages, healthy and economical, and is thus a major threat to hospitals. since, most of the residents in hospitals are the individuals who cannot rescue themselves in such situations, fire in hospitals is more hazardous than any other public place; hence, it can endanger several sophisticated medical equipment. therefor...
This paper presents a review over the detection of edges by taking a flame as an input image. The identification of flame edge is the process of locating a boundary between those areas where a thermochemical reactions take place. The determination of flame edges is necessary for early fire detection, fire analysis and the estimation of various flame parameters. Edge detection is an important pr...
Information in the nervous system has often been considered as being represented by simultaneous discharge of a large set of neurons. We propose a learning mechanism for neural information processing in a simulated cortex model. Also, a new paradigm for pattern recognition by oscillatory neural networks is proposed. The relaxation time of the oscillatory networks is used as a criterion for nove...
The changes in soil nutrients and aggregate stability either in short-term or in long-term after fire is very important in forest ecosystems due to their key role in plants growth and preventing soil erosion. In the present investigation the short, medium, and long-term effect of fire was surveyed on these properties for the first time in Iran. For this purpose a plot of Zagros forests was sele...
Analysis of the Location of Urban Fire Stations Case Study: Piranshahr City I. Ebrahimzadeh[1] D. Kashefidoost[2] A. Hosseini[3] 1. Introduction The first key point in order to allocate city facilities and proper use of them especially during the crisis, is choosing (selecting) the optimum location (place) regarding to different and sometimes contradictory conditions. This becomes more importan...
Fires and gas leaks are events that still occur frequently. This incident is usually caused by various factors including leakage of LPG cylinders, cigarette butts disposed carelessly, short circuits electric current so on. Generally, fires can only be detected if the fire has already grown or a lot smoke comes out building. Therefore, monitoring system for detecting dangerous gases in buildings...
This paper has proposed an IoT based industrial fault detection and diagnosis system. The (Internet of things) industry protection system employing Arduino is intended to safeguard industries from losses brought on by accidents monitoring the faults. Industrial such as gas leakage causes fire resulting in significant setbacks. Due furnace explosions, electrical short circuits, or other circumst...
Nowadays automated early warning systems are essential in human life. One of these systems is fire detection which plays an important role in surveillance and security systems because the fire can spread quickly and cause great damage to an area. Traditional fire detection methods usually are based on smoke and temperature detectors (sensors). These methods cannot work properly in large space a...
Background and aims: Accidents happened as a result of LPG leakage emphasizes the importance of the consequence analysis of fire and explosion in LPG storage tanks. The purpose of this study is to analysis the consequences of fire and explosion in a cylindrical LPG storage tank in an oil and gas industry. Method: In this analytical study, four possible failure scenarios including 1...
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