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Fire accident analysis of sweeping robot-heater based on FRAM-PLTS
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Guozhong HUANG1, 2, Zhiyong ZUO1, 2, Qing DENG**, 1, 2, Hanxige CHEN1, 2, Zhengkai CAO1, 2
China Safety Science Journal | 2025, 35(12) : 180 - 186
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China Safety Science Journal | 2025, 35(12): 180-186
• Public safety •
Fire accident analysis of sweeping robot-heater based on FRAM-PLTS
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Guozhong HUANG1, 2, Zhiyong ZUO1, 2, Qing DENG**, 1, 2, Hanxige CHEN1, 2, Zhengkai CAO1, 2
Affiliations
  • 1School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 2Research Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing 100083, China
Published: 2025-12-28 doi: 10.16265/j.cnki.issn1003-3033.2025.12.0449
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To address the safety risk issues of smart household appliance products, a systematic risk analysis was conducted by taking two sweeping robot-heater fire accidents in a certain location as the research subjects. An integrated method combining the FRAM and PLTS was adopted. FRAM was applied to analyze the accidents, through which nine core functional modules were identified, including navigation module, obstacle avoidance sensor module, and motion control module. Subsequently, PLTS was introduced to quantitatively determine the main characteristics of the input and output terminals of each functional module. Based on this quantitative analysis, four functional resonance modules that led to the accidents in the sweeping robot-heater were confirmed. The results show that the primary causes of the accidents include insufficient sensor accuracy and failure of users to implement the "power-off when leaving" operation. Additionally, the barrier system for risk prevention and control is identified, which consists of physical barriers, functional barriers, intangible barriers, and symbolic barriers.

sweeping robots  /  heaters  /  functional resonance analysis method (FRAM)  /  probabilistic linguistic term set (PLTS)  /  fire accident  /  barrier system
Guozhong HUANG, Zhiyong ZUO, Qing DENG, Hanxige CHEN, Zhengkai CAO. Fire accident analysis of sweeping robot-heater based on FRAM-PLTS[J]. China Safety Science Journal, 2025 , 35 (12) : 180 -186 . DOI: 10.16265/j.cnki.issn1003-3033.2025.12.0449
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Year 2025 volume 35 Issue 12
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Article Info
doi: 10.16265/j.cnki.issn1003-3033.2025.12.0449
  • Receive Date：2025-07-02
  • Online Date：2026-07-09
  • Published：2025-12-28
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  • Received：2025-07-02
  • Revised：2025-09-20
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Affiliations
    1School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    2Research Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing 100083, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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