医用x射线机电磁兼容测试中的问题及其分析

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1、医用X射线机电磁兼容测试中的问题及其分析麵刘宝林检测所摘要：目的随着科学技术的发展，W内外对电磁兼容的重视度越来越高。在检测工作中发现大多数x射线机电磁兼容不合格，其原因大都是出于厂方在设计产品时没有进行合理的抑制设计。本文旨在总结不合格项0的整改办法。方法本文通过x射线机静电放电、射频电磁场辐射等抗扰度实验项目，重点分析了x射线机的电磁干扰产生机理及传播方式，并提出通用的整改思路及措施。结果在x射线机各部件的电磁兼容项目整改过程中，通常可采用增加外壳屏蔽、加强接地、更换屏蔽线材等措施对产品进行优化，从而加强其抗干扰性。而其中PCB电路板整改难度最大，需在前期研发过程中重点设计。结论本

2、文对医用X射线机电磁兼容测试屮出现的问题深入分析后设计/一套X射线机电磁兼容不合格项目的基本整改流程，帮助企业有效解决常见问题，缩短研发周期，降低研发与物料成本，提升产品质量。关键词：X射线机;电磁兼容;抗扰度;整改措施;作者简介：黄職。E-mail:huanglu@smda.gov.cn收稿日期：2017-02-16基金：上海高校特聘教授（东方学者）跟踪计划ProblemsandanalysisofelectromagneticcompatibilitytestformedicalX-raymachineHUANGLuLIUBaolinHUANGTiahuaSchoolofMedic

3、alInstrumentandFoodEngineering，UniversityofShanghaiforScienceandTechnology;ShanghaiMedicalEquipmentTestingInstitute;Abstract：ObjectiveWiththedevelopmentofscienceandtechnology,moreandmoreattentionispaidtoelectromagneticcompatibilityathomeandabroad.Plantsdonottryreasonablesuppressioninproductdesig

4、n,whichisthemostimportantreasonwhyunqualifiedEMCofX-raymachineisfoundinthetestingwork.Thepurposeofthispaperistosumupthemethodstoimprovethecommonunqualifieditems.MethodsInthispaper,weputforwardcommonideasandmeasuresofrectificationthroughelectrostaticdischarge,RFelectromagneticfieldimmunitytesting

5、andsoon.ThemechanismandpropagationofelectromagneticinterferenceofX-raymachineareanalyzedindetail.ResultsIntheprocessofelectromagneticcompatibilityprojectofX-raymachine,weusuallyoptimizetheproductbyincreasingtheshieldingoftheshell,strengtheningthegrounding，changingtheshieldingwireandsoontoenhance

6、itsanti-jammingability.RectificationofPCBboardisthemostdifficultwork,soweshouldfocusonitintheearlyresearchanddevelopmentprocess.ConclusionsInthispaper,theproblemsofelectromagneticcompatibilitytestingofmedicalX-raymachineareanalyzed.Inaddition,asetofbasicrectificationprocessofX-raymachineelectrom

7、agneticcompatibilityisdesignedtosolvecommonproblems,shortendevelopmentcycle,reducedevelopmentandmaterialcost,andimproveproductquality.Keyword：X-ray;electromagneticcompatibility;susceptibility;rectificationmeasure;Received：20