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电子学报  2015 

视频胶囊内窥镜的改进设计与实验

DOI: 10.3969/j.issn.0372-2112.2015.03.029, PP. 605-610

Keywords: 胶囊内窥镜,视频胶囊,射频电路,螺旋天线

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Abstract:

为延长视频胶囊内窥镜工作时间,提高体外接收视频质量,需降低胶囊内射频电路模块的功耗以改进发射电路的发射效果.针对上述问题,本文设计了胶囊内的射频电路模块和螺旋形发射天线,并使用ADS2011及HFSS对其进行仿真,最后通过实验对该设计进行验证.内窥镜胶囊进入活体动物(猪)胃肠道后,体外便携接收器接收到的视频图像质量较高,证明该改进设计可行.结果表明:当射频电路板的直径为9.8mm,射频模块的工作频率为1.0GHz,功耗为15.9mW时,胶囊的工作时间为9.0h,视频数据的无线传输速率达到30frame/s(320×240pixel/frame).

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