摘要:
在射频天线辐射场中的井下金属结构可以等效为接收天线,聚焦在金属结构上的电磁波 能量在刮擦条件下会以放电火花的形式释放,目前缺乏测试方法和实验设备对电磁波能量引起 的放电火花进行测试。 为解决这一问题,本文开展电磁波能量安全性分析测试平台的研究,针对 电磁波能量耦合到金属结构上的不同途径,设计了辐射场耦合能量测试装置、电磁波能量磁共振 耦合功率测试装置和电磁波能量放电火花实验装置,在此基础上进行了射频信号源在刮擦条件 下的火花功率实验。 实验结果表明,当信号源输入功率小于4.1W时,射频电磁波能量引起的放 电火花不会引燃瓦斯气体。
Abstract:
Theundergroundmetalstructureintheradiationfieldoftheradiofrequencyantennacanbe equivalenttothereceivingantenna.Theenergyofelectromagneticwavefocusedonthemetalstructure willbereleasedintheformofdischargesparkunderscratchcondition.Atpresent,thereisnotesting methodandexperimentalequipmenttomeasurethedischargesparkcausedbyelectromagneticwaveenergy.Inordertosolvethisproblem,thispaperdevelopsatestingplatformforelectromagneticwaveenergysecurityanalysis.Accordingtothedifferentwaysofcouplingelectromagneticwaveenergytometal structure,theplatformdesignsthreekindsofdevices:radiationfield(RF)couplingenergytest,electromagneticwaveenergymagneticresonancecouplingpowertestandelectromagneticwaveenergydischarge spark experiment.On this basis,the spark power experiment of the RF signal source under scratchcondition was carried out.The experimental results show that when the output power of the signalsourceislessthan4.1W,thesparkcausedbytheenergyoftheRFelectromagneticwavewould
notignitethegas.
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