An integrated fire detection and suppression system based on widely available video surveillance

2010 ◽  
Vol 21 (6) ◽  
pp. 941-948 ◽  
Author(s):  
Feiniu Yuan
Keyword(s):  
Video Surveillance ◽  
Fire Detection ◽  
Suppression System

scholarly journals Development of a fire detection and suppression system for a smart air cargo container

2020 ◽  
Vol 125 (1283) ◽  
pp. 205-222
Author(s):  
Q. Zhang ◽  
Y.C. Wang ◽  
C. Soutis ◽  
M. Gresil
Keyword(s):  
Light Transmission ◽  
Detection System ◽  
Numerical Models ◽  
Detection Threshold ◽  
Fire Detection ◽  
False Alarms ◽  
Air Cargo ◽  
Worst Case ◽  
Cargo Container ◽  
Suppression System

ABSTRACTThis study investigates and proposes a fire detection and suppression system for a smart air cargo container. A series of smoke spread and fire evolution numerical models are executed to assess the performance of container-based fire detection in various fire scenarios. This is to identify the worst case and optimise the location and threshold setting of fire detection sensors, achieving the shortest detection time. It is found that the fire detection threshold (reduction in light transmission = 12%/ft) for a container-based system can be set at three times the standard activation threshold for a cargo-based fire detection system, which can reduce the number of false alarms by three orders of magnitude. Moreover, effectiveness analysis of passive fire protection for the glass fibre-reinforced polymer-made smart container indicates an allowable leakage size of 0.01m2. The risk of internal overpressure has been found to be negligible for the leakage size required by aircraft pressure equalisation.

Application of video surveillance equipment for fire detection

2021 ◽  
Vol 91 ◽  
pp. 107-120
Author(s):  
A. N. Chlenov ◽  
◽  
A. V. Kochegarov ◽  
T. A. Butcinskaya ◽  
A. M. Aleshkov ◽  
...  
Keyword(s):  
Video Surveillance ◽  
Fire Protection ◽  
Fire Safety ◽  
Fire Detection ◽  
Fire Alarm ◽  
Alarm Systems ◽  
Effective Operation ◽  
Fire Alarm System ◽  
Protected Object ◽  
In Fire

Introduction. The fire safety of the protected object is determined by the possibility of reliable fire detection. Insufficiently effective operation of the fire alarm system can lead to the death of people, unacceptable material and other damage. The video surveillance system, being one of the main links of the engineering security system, monitors emergency situations in real time and, in particular, a breakout of fire at the protected object. Goals and objectives. The purpose of the article is to analyze the state and trends in the development of video surveillance equipment aimed at improving the fire safety of protected objects. Tasks include regulatory justification of the use of video surveillance in fire alarm systems, review of methods of fire detection by video surveillance and improving their effectiveness under the influence of interfering factors, as well as evaluation of the effectiveness of video surveillance in fire protection systems. Methods. The methods of the system analysis and probability theory are used. Results and discussion. The requirements of regulatory documents for detectors with a video detection channel for their effective operation in fire alarm systems are considered. The main directions of development of means and methods of application of video surveillance in fire protection systems are defined. It is shown that reducing the risk of non-detection of fire to an acceptable level can be achieved by increasing the probability of effective operation of the fire alarm system, as well as by increasing the positive impact of the video surveillance system, which is a part of the complex security system of the object. Conclusions. Video surveillance significantly increases the efficiency of fire detection. It allows you to get a visual picture of the state of the protected object, which has such a high information content that no other security means can provide. The use of video surveillance equipment in fire alarm systems, as well as their integration with industrial and fire automation systems is one of the main reserves for increasing the fire safety of facilities. Keywords: video surveillance, fire detector with video detection channel, fire alarm, video analytics, fire protection

scholarly journals Thermal Runaway and Fire Suppression Applications for Different Types of Lithium Ion Batteries

Vehicles ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 480-497
Author(s):  
Cagri Un ◽  
Kadir Aydın
Keyword(s):  
Fire Suppression ◽  
Warning System ◽  
Lithium Ion ◽  
Fire Detection ◽  
Thermal Runaway ◽  
Water Suppression ◽  
Runaway Reactions ◽  
Short Circuits ◽  
Spot Cooling ◽  
Suppression System

With the improvement of lithium-ion battery (LIB) technology, safety is becoming increasingly urgent topic for battery electric vehicles (BEVs). Short circuits, overcharging, high temperatures and overheating can cause thermal runaway reactions and the release of the flammable electrolyte which makes fire suppression very difficult. This study focuses on the mechanism of thermal runaway and fire suppression applications of LIBs. In order to understand this, 10 experiments were carried out. The experiments were divided into as Exp. A and Exp. B. A manual water suppression system was used in Exp. A and an automatic boron-based suppression system (AUT-BOR) was used in Exp. B. LIBs were heated in a controlled manner with a heat source and the effects of thermal runaway and fire suppression were observed. In Exp. A, a large amount of water was required to extinguish the LIB fires. The holes and slits which formed in the LIB after a fire were useful for injecting water. A projectile effect of cylindrical cells was observed in Exp. A. The Exp. B results showed that AUT-BOR mitigates risks effectively and safely. Also, AUT-BOR provides an early fire warning system and spot cooling to prevent thermal runaway reactions while localizing and suppressing the fire. In Exp. B, fire detection and suppression occurred without any explosion.

scholarly journals Proposed System of Enhancement in Accuracy for Fire Detection System using Machine Learning Algorithm

2020 ◽  
Vol 9 (4) ◽  
pp. 2093-2097
Keyword(s):  
Video Surveillance ◽  
Video Sequence ◽  
Learning Algorithm ◽  
Detection System ◽  
Early Stage ◽  
Fire Detection ◽  
Early Event ◽  
Generation System ◽  
Fire Event ◽  
Better Than

The video surveillance system has become a important part in the security and protection of cities. The Video surveillance has become an important factor in the cities, since smart monitoring cameras mounted with intelligent video analytics techniques can monitor and pre-alert system by capturing abnormal activity such as fire events. The current world is completely under CCTV for make the various areas secure. The video recorded is unable to find out fire detection at early stage of fire event. After event happened this video sequence is used to find out causes of an event/fire but problem is after event happened system are unable to save loss by that event or accident, so there is need to such system is able to help us in early event detection and pre-alert generation system. Motive behind this proposed work is to invent pre-alert generation system without any hardware as well as sensor. Accuracy of this proposed system may be approx.85-90% or more which is better than existing system.

scholarly journals Efficient Deep CNN-Based Fire Detection and Localization in Video Surveillance Applications

2019 ◽  
Vol 49 (7) ◽  
pp. 1419-1434 ◽  
Author(s):  
Khan Muhammad ◽  
Jamil Ahmad ◽  
Zhihan Lv ◽  
Paolo Bellavista ◽  
Po Yang ◽  
...  
Keyword(s):  
Video Surveillance ◽  
Fire Detection ◽  
Deep Cnn ◽  
Detection And Localization ◽  
Surveillance Applications
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