主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

Fire Science and Technology ›› 2023, Vol. 42 ›› Issue (9): 1201-1204.

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Technology of fire reconnaissance through fire and smoke based on laser range gate imaging

Li Ziting1,2,3, Chu Yuxi1,2,3, Chen Ye1,2,3   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. Key Laboratory of Fire Protection Technology for Industry and Public Building, Ministry of Emergency Management, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China)
  • Online:2023-09-15 Published:2023-09-15

Abstract: In view of the difficulty of firefighters' search and rescue due to the extremely low visibility in the dense smoke environment of fires, we proposed a fire penetration and smoke detection technology based on laser range gate imaging, and carried out physical experiments on imaging through wood pallets, n-heptane fires and smoke in confined spaces, which can image through 1.5 m longitudinal flame and improve the visibility in dense smoke environment by 3 times, solving the current problem that fires and smoke cannot be penetrated due to surface/interface reflection and serious backward scattering. Based on the experimental results, the application prospect of laser range gate imaging in firefighting visualization reconnaissance and rescue is discussed, and the future development direction of this research field is further clarified. The future development of fire reconnaissance and rescue equipment based on laser range gate imaging technology provides "perspective eyes" for fire rescue personnel, which is expected to effectively improve the fire control, rapid internal attack and personnel rescue capabilities in the initial battle and night environment.

Key words:  imaging through fire, imaging through smoke, fire reconnaissance, laser, laser range gate imaging