Research on the Intelligent Fault Diagnosis of Medical Devices Based on a DEMATEL-Fuzzy Concept Lattice
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Research on the Intelligent Fault Diagnosis of Medical Devices Based on a DEMATEL-Fuzzy Concept Lattice Xingru Guo1 • Aijun Liu1 • Xia Li2 • Yaxuan Xiao1
Received: 11 October 2019 / Revised: 24 February 2020 / Accepted: 10 April 2020 Taiwan Fuzzy Systems Association 2020
Abstract Hospitals’ daily operations have become increasingly dependent on medical devices. However, the occurrence of faults is inevitable. Therefore, it is crucial for hospitals to make timely fault diagnoses and enact the corresponding measures and improvements. This paper proposes a novel concept lattice method for the intelligent diagnosis of medical device faults. To minimize the influence of uncertain factors, fuzzy sets are used to accurately express relationships between concepts. First, the occurrence frequency and severity of each fault type are extracted based on the collected information. Then, the fuzzy formal context of occurrent faults and known faults can be constructed. Next, the corresponding fuzzy concept lattice is established and visualized using a Hasse diagram. Finally, the similarity between the concept lattices is calculated and used for fault diagnosis. Here, the weight factors are determined using the decision-making trial and evaluation laboratory (DEMATEL) method. A comparative analysis is performed to show that the proposed method uses simple calculations and is highly accurate. Keywords Medical devices Intelligent fault diagnosis Concept lattice Fuzzy sets DEMATEL
& Xia Li [email protected] 1
Department of Management Engineering, School of Economics & Management, Xidian University, Xi’an 710071, China
2
State Key Laboratory of Cancer Biology, Department of Pathology, Xijing Hospital and School of Basic Medicine, Fourth Military Medical University, Xi’an 710032, China
1 Introduction In modern medicine, medical devices generally include instruments, devices, appliances, materials, software and other items that can be used individually or in combination, such as ventilators, monitors, syringe pumps, infusion pumps, computed tomography (CT) scans, magnetic resonance imaging, colour Doppler ultrasounds and blood dialyzers. These devices have become indispensable parts of modern hospitals and essential tools for hospitals’ normal work, such as medical treatments, scientific research, teaching, and ensuring the necessary conditions for survival. The economic benefits that are created by such devices also bring about a great proportion of hospitals’ overall benefits [1], which affect the diagnostic abilities and technical development of hospitals [2]. The installation, maintenance, repair and disposal of medical devices are the main tasks of hospitals and are all directly related to the effectiveness of testing, collaboration and the continuity of the hospitals’ overall medical work [3]. In daily applications, most medical devices utilize advanced technology and are highly precise instruments that can present multiple faults [4]. That is, in the process of long-term storage and protection, the performance
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