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The Validity Experimental Study of the Obstacle Fires Extinguishment by Water Mist

Liu Xuanya,Lu Shouxiang,Huang Yue,Chen Guoqing

Strategic Study of CAE 2006, Volume 8, Issue 5,   Pages 88-93

Abstract: fires extinguishment by water mist on the conditions of different obstacles baffles.heptanes fires were analyzed.FDS (4.0.5) was employed to study the interaction of the water mist and obstacle oil fires and the extinguishingThe experimental and simulation results show that the structure and style of the obstacle fires are importantto influence the validity of the obstacle fires extinguishment by water mist.

Keywords： water mist     obstacle fires     validity of fire extinguishment    

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Research on Anthropomorphic Obstacle Avoidance Trajectory Planning for Adaptive Driving Scenarios Based

Jian Wu,Yang Yan,Yulong Liu,Yahui Liu,

Engineering doi: 10.1016/j.eng.2023.07.018

Abstract: optimization functions, resulting in poor adaptability of the strategy and an inability to accurately generate obstacleIn addition, owing to the strong time-varying dynamic characteristics of obstacle avoidance scenariosTherefore, an anthropomorphic obstacle-avoidance trajectory planning strategy for adaptive driving scenariosmapping model is constructed by combining the key driving scenario information that affects vehicle obstacleavoidance with the weight of the optimization function, and an anthropomorphic obstacle avoidance trajectory

Keywords： Obstacle avoidance trajectory planning     Inverse reinforcement theory     Anthropomorphic     Adaptive driving    

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Obstacle-circumventing adaptive control of a four-wheeled mobile robot subjected to motion uncertainties

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0753-3

Abstract: tracking of the four-wheeled mobile robot (FMR), existing methods resolve the tracking control and obstacleTo address this challenge, this paper proposes an obstacle-circumventing adaptive control (OCAC) frameworkBy introducing sub-target points, a new sub-target dynamic tracking regression obstacle avoidance strategyis presented to transfer the obstacle avoidance problem into a dynamic tracking one, thereby reducingthe burden of local path searching while ensuring system stability during obstacle circumvention.

Keywords： four-wheeled mobile robot     obstacle-circumventing adaptive control     adaptive anti-disturbance terminalsliding mode control     sub-target dynamic tracking regression obstacle avoidance    

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Progress in Research and Application of Water Mist Suppressing Class C Fires

Fang Yudong,Zhu Xiaoyong,Liu Jianghong,Zhang Yongfeng,Liao Guangxuan

Strategic Study of CAE 2006, Volume 8, Issue 7,   Pages 89-94

Abstract: Water mist has demonstrated some advantages in suppressing electrical and electronic fires (class C fires

Keywords： water mist     class C fires     electric characteristic    

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The Shortest Path for Mobile Robots in Obstacle Avoidance

Guo Ge

Strategic Study of CAE 2003, Volume 5, Issue 5,   Pages 70-75

Abstract:

An obstacle avoidance strategy for mobile robot is presented based on obstacle position and size informationFurthermore, rational robot paths in obstacle avoidance are discussed in detail, which leads to the finalimportant result of optimal path for mobile robot to avoid an obstacle.

Keywords： mobile robot     ultrasonic sensor     obstacle avoidance     path planning     optimal path    

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Shadow obstacle model for realistic corner-turning behavior in crowd simulation

Gao-qi HE,Yi JIN,Qi CHEN,Zhen LIU,Wen-hui YUE,Xing-jian LU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3,   Pages 200-211 doi: 10.1631/FITEE.1500253

Abstract: This paper describes a novel model known as the shadow obstacle model to generate a realistic corner-turning

Keywords： Corner-turning behavior     Crowd simulation     Safety awareness     Rule-based model    

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method of determining flame radiation fraction induced by interaction burning of tri-symmetric propane fires

Jie JI, Junrui DUAN, Huaxian WAN

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1017-1026 doi: 10.1007/s11708-020-0716-x

Abstract: The interaction of multiple fires may lead to a higher flame height and more intense radiation flux than

Keywords： flame interaction     air entrainment     flame height     multi-point source model     thermal radiation    

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A new efficient optimal path planner for mobile robot based on Invasive Weed Optimization algorithm

Prases K. MOHANTY,Dayal R. PARHI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4,   Pages 317-330 doi: 10.1007/s11465-014-0304-z

Abstract: First we have framed an objective function that satisfied the conditions of obstacle avoidance and target

Keywords： mobile robot     obstacle avoidance     Invasive Weed Optimization     navigation    

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The Effect of Fire Source with Sand on the Temperature of Compartmental Fires

Song Hu,Yang Lizhong,Fan Weicheng,Weng Wenguo

Strategic Study of CAE 2002, Volume 4, Issue 5,   Pages 59-62

Abstract:

When compartment fire reaches flashover, the temperature rises rapidly, resulting in the ignition of all surfaces of the combustibles within the compartment. In this paper, the suppression method of adding sand into the fire source (gasoline) is discussed. Through assuminga transition layer below the surface of sand, the combustion process of the fire source can be simplified. It is found that the time to the peak value of the upper layer temperature, the peak value itself and the rate of extinguishment have obvious dependence on the volume ratio of sand to the fire source (gasoline) . Experimental results show that the theoretical analy is reasonable.

Keywords： fire source with sand     compartmental fire     flashover    

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Progress in study of Hazard Analysis of Fire Smoke

Huang Rui,Yang Lizhong,Fang Weifeng,Fan Weicheng

Strategic Study of CAE 2002, Volume 4, Issue 7,   Pages 80-85

Abstract:

In building fires, smoke is one of the primary factors which result in death.

Keywords： building fires     smoke     toxicity     risk analysis    

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A survey on multi-sensor fusion based obstacle detection for intelligent ground vehicles in off-road Review

Jin-wen Hu, Bo-yin Zheng, Ce Wang, Chun-hui Zhao, Xiao-lei Hou, Quan Pan, Zhao Xu,hujinwen@nwpu.edu.cn,zhengboyin@mail.nwpu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5,   Pages 649-808 doi: 10.1631/FITEE.1900518

Abstract: With the development of sensor fusion technologies, there has been a lot of research on intelligent ground vehicles, where is one of the key aspects of vehicle driving. is a complicated task, which involves the diversity of obstacles, sensor characteristics, and environmental conditions. While the on-road driver assistance system or autonomous driving system has been well researched, the methods developed for the structured road of city scenes may fail in an because of its uncertainty and diversity. A single type of sensor finds it hard to satisfy the needs of because of the sensing limitations in range, signal features, and working conditions of detection, and this motivates researchers and engineers to develop and system integration methodology. This survey aims at summarizing the main considerations for the onboard multi-sensor configuration of intelligent ground vehicles in the s and providing users with a guideline for selecting sensors based on their performance requirements and application environments. State-of-the-art methods and system prototypes are reviewed and associated to the corresponding heterogeneous sensor configurations. Finally, emerging technologies and challenges are discussed for future study.

Keywords： Multi-sensor fusion     Obstacle detection     Off-road environment     Intelligent vehicle     Unmanned ground vehicle    

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Experimental Studies on Fire Extinguishment Efficiency of Water Mist With Obstruction Pool Fires

Fang Yudong,Liu Jianghong,Liao Guangxuan,Lin Lin

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 75-79

Abstract:

In fire environments，the traditional fire extinguishing agents can't effectually put out a fire which is sheltered by barrier. Now, a lot of water mist fire extinguishing researches have been made . This paper mainly studies the validity of water mist fire extinguishing and investigates the controlling and extinguishing effects of water mist fire extinguishing when barrier exists. At the same time, this paper also studies how the key factors, including opening degree between nozzle and barrier,water mist pressure, water mist flux and so on, influence the fire extinguishing validity, analyzes the water mist fire extinguishing characters when barrier exists, gives the reason why the water mist can't put out a fire in some conditions，and provides references for practical engineering application.

Keywords： water mist     barrier     kerosene fire     fire extinguishing validity    

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Modeling Study of Steel Elements Submitted to Real Compartment Fires

Shi Congling,Huo Ran,Li Yuanzhou,Peng Wei,Yao Bin

Strategic Study of CAE 2003, Volume 5, Issue 12,   Pages 66-72

Abstract: Finally, such method was put to use for design fires of a steel-structured retail shop in an airport

Keywords： real fire environment     two-zone model     temperature of steel element     plume models    

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Multi-UAV obstacle avoidance control via multi-objective social learning pigeon-inspired optimization Research

Wan-ying Ruan, Hai-bin Duan,wyruan@buaa.edu.cn,hbduan@buaa.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 5,   Pages 649-808 doi: 10.1631/FITEE.2000066

Abstract: We simulate the flight process of five UAVs in a complex obstacle environment.

Keywords： 无人机；避障；鸽群优化；多目标社会学习鸽群优化    

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Experimental Study on Relationship Between Mass Loss Rate and Smoke Transportation to the Distant Location in Fires

Feng Wenxing,Yang Lizhong,Fang Tingyong,Huang Rui,Fan Weicheng

Strategic Study of CAE 2005, Volume 7, Issue 1,   Pages 81-85

Abstract:

The various materials as fuel are burnt in an experimental device of Room-Corridor structure, the mass loss rate of which, and the relationship of the mass loss rate with the smoke transportation velocity and CO concentration at a distant location are studied in detail in this paper. It describes the characteristics of mass loss rate of various materials and indicates that the smoke transportation velocity is a linear function of mass loss rate, and is sensitive to the variation of the mass loss rate. It takes a relatively long time for the peak of the toxic species concentration to transport to the distant location.

Keywords： fire     mass loss rate     distant location     transportation velocity     smoke toxicity    

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Title Author Date Type Operation

The Validity Experimental Study of the Obstacle Fires Extinguishment by Water Mist

Liu Xuanya,Lu Shouxiang,Huang Yue,Chen Guoqing

Journal Article

Research on Anthropomorphic Obstacle Avoidance Trajectory Planning for Adaptive Driving Scenarios Based

Jian Wu,Yang Yan,Yulong Liu,Yahui Liu,

Journal Article

Obstacle-circumventing adaptive control of a four-wheeled mobile robot subjected to motion uncertainties

Journal Article

Progress in Research and Application of Water Mist Suppressing Class C Fires

Fang Yudong,Zhu Xiaoyong,Liu Jianghong,Zhang Yongfeng,Liao Guangxuan

Journal Article

The Shortest Path for Mobile Robots in Obstacle Avoidance

Guo Ge

Journal Article

Shadow obstacle model for realistic corner-turning behavior in crowd simulation

Gao-qi HE,Yi JIN,Qi CHEN,Zhen LIU,Wen-hui YUE,Xing-jian LU

Journal Article

method of determining flame radiation fraction induced by interaction burning of tri-symmetric propane fires

Jie JI, Junrui DUAN, Huaxian WAN

Journal Article

A new efficient optimal path planner for mobile robot based on Invasive Weed Optimization algorithm

Prases K. MOHANTY,Dayal R. PARHI

Journal Article

The Effect of Fire Source with Sand on the Temperature of Compartmental Fires

Song Hu,Yang Lizhong,Fan Weicheng,Weng Wenguo

Journal Article

Progress in study of Hazard Analysis of Fire Smoke

Huang Rui,Yang Lizhong,Fang Weifeng,Fan Weicheng

Journal Article

A survey on multi-sensor fusion based obstacle detection for intelligent ground vehicles in off-road

Jin-wen Hu, Bo-yin Zheng, Ce Wang, Chun-hui Zhao, Xiao-lei Hou, Quan Pan, Zhao Xu,hujinwen@nwpu.edu.cn,zhengboyin@mail.nwpu.edu.cn

Journal Article

Experimental Studies on Fire Extinguishment Efficiency of Water Mist With Obstruction Pool Fires

Fang Yudong,Liu Jianghong,Liao Guangxuan,Lin Lin

Journal Article

Modeling Study of Steel Elements Submitted to Real Compartment Fires

Shi Congling,Huo Ran,Li Yuanzhou,Peng Wei,Yao Bin

Journal Article

Multi-UAV obstacle avoidance control via multi-objective social learning pigeon-inspired optimization

Wan-ying Ruan, Hai-bin Duan,wyruan@buaa.edu.cn,hbduan@buaa.edu.cn

Journal Article

Experimental Study on Relationship Between Mass Loss Rate and Smoke Transportation to the Distant Location in Fires

Feng Wenxing,Yang Lizhong,Fang Tingyong,Huang Rui,Fan Weicheng

Journal Article