Research on the user requirements of self-rescuers for coal mines under the KANO-FBS model
To effectively evaluate miners'satisfaction with the self-rescuer and design a self-rescuer that meets their needs,a user-oriented product design process is proposed to improve the development process.The first step involves conducting a survey to explore the user requirements for the coal mine self-rescuer.The KJ method is then employed to construct a user requirement system.The KANO model is adopted to quantify the user requirements,and the design objectives are determined through sensitivi-ty ranking.The requirement elements under the KANO model and FBS functional elements are conver-ted,and the FBS model is chosen to map and transform the requirements,with a necessary structure es-tablished for the design of the coal mine self-rescuer.Finally,the design is optimized in terms of usage and information recognition.The results indicate that the key areas for improvement in the coal mine self-rescuer's user requirement indicators are ease of operation,safe oxygen supply,and fault feed-back,with sensitivity scores of 1.071,0.906,and 0.866,respectively.By average operation time tes-ting,the self-rescuer designed for coal mines showed higher usage efficiency compared to the existing products.The introduction of fuzzy comprehensive evaluation method verified the higher user satisfac-tion with the designed self-rescuer for coal mines.This study effectively addresses such issues as incon-venient operation and difficult daily maintenance of the existing coal mine self-rescuers.Furthermore,it provides valuable insights into the effectiveness and guiding value of the KANO-FBS model,a reference for future design and optimization of coal mine self-rescuers.
industrial designself-rescuers for coal minesuser requirementsfuzzy comprehensive e-valuation
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