一种超宽带无线胶囊内窥镜设备。
A UWB wireless capsule endoscopy device.
作者信息
Thotahewa Kasun M S, Redoute Jean-Michel, Yuce Mehmet Rasit
出版信息
Annu Int Conf IEEE Eng Med Biol Soc. 2014;2014:6977-80. doi: 10.1109/EMBC.2014.6945233.
Wireless capsule endoscopy (WCE) presents many advantages over traditional wired endoscopic methods. The performance of WCE devices can be improved using high-frequency communication systems such as Impulse Radio-Ultra-Wideband (IR-UWB) to enable a high data rate transmission with low-power consumption. This paper presents the hardware implementation and experimental evaluation of a WCE device that uses IR-UWB signals in the frequency range of 3.5 GHz to 4.5 GHz to transmit image data from inside the body to a receiver placed outside the body. Key components of the IR-UWB transmitter, such as the narrow pulse generator and up-conversion based RF section are described in detail. This design employs a narrowband receiver in the WCE device to receive a control signal externally in order to control and improve the data transmission from the device in the body. The design and performance of a wideband implantable antenna that operates in the aforementioned frequency range is also described. The operation of the WCE device is demonstrated through a proof-of-concept experiment using meat.
无线胶囊内窥镜检查（WCE）相较于传统有线内窥镜方法具有诸多优势。使用诸如脉冲无线电超宽带（IR-UWB）等高频通信系统可提升WCE设备的性能，以实现低功耗的高数据速率传输。本文介绍了一种WCE设备的硬件实现与实验评估，该设备使用3.5 GHz至4.5 GHz频率范围内的IR-UWB信号将体内图像数据传输至置于体外的接收器。详细描述了IR-UWB发射器的关键组件，如窄脉冲发生器和基于上变频的射频部分。此设计在WCE设备中采用窄带接收器以外部接收控制信号，从而控制和改善体内设备的数据传输。还介绍了在上述频率范围内工作的宽带植入式天线的设计与性能。通过使用肉类进行的概念验证实验展示了WCE设备的运行情况。
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