Research on Mathematical Distribution of Failure Time and Engineering Evaluation for Medical Electrical Equipment Based on Operation and Maintenance Data.
10.3969/j.issn.1671-7104.2020.03.003
- Author:
Hongyi YU
1
;
Jinlin ZOU
2
;
Weiqiang ZHANG
1
Author Information
1. Shanghai Testing and Inspection Institute for Medical Devices, Shanghai, 201318.
2. Re-impro Technology LTD, Guangzhou, 510610.
- Publication Type:Journal Article
- Keywords:
MTBF;
Weibull distribution;
linear regression method;
medical electrical equipment;
the operation and maintenance data
- MeSH:
Maintenance
- From:
Chinese Journal of Medical Instrumentation
2020;44(3):199-204
- CountryChina
- Language:Chinese
-
Abstract:
This study mainly discusses the contents, methods and characteristics of the collection of operation and maintenance data, as well as the establishment and evaluation methods of the distribution model of the failure time of medical electrical equipment. The distribution models of failure time at three levels of medical electrical equipment are established by linear regression method and goodness of fit test:The first is the device level MTBF distribution model, the second is the failure rate distribution model of the failure mode of key components, the third is the calculation model of the influence coefficient of influence factor on the failure mode of key components. This study presents a method of establishing MTBF segment model and implements a calculation model of influence coefficient varying with time.
