植入式人体容性信道的建模与测试

Modeling and Testing of Implantable Human Capacitive Channel

近几年,越来越多的研究人员开始关注无线人体局域网(WBAN),它的出现创造了一种更加安全并且更具个性的触摸连接方式,即利用人体作为通信媒介,因此也称为人体通信(HBC)。由于它与大多数基于辐射的方法相比所具备的绝对优势,因此这种方式越来越广泛地替代传统的医疗监测,从而提升医疗服务应用。本系统通过实验确定测试夹具对HBC通道响应特性的影响,从而提出扩展模型,并将扩展模型应用于实际信道测量,通过测试验证得到了良好的实验相关性。通过测试结果表明,测试夹具对HBC通道特性的影响不可忽略,所建立的扩展模型有助于正确描述信道测量特性,为更好地理解与信道响应相关的频率分布结果等提供了有用的工具。

In recent years,more and more researchers began to pay attention to the wireless body local area network(WBAN).Its emergence has created a more secure and personalized touch connection method,that is,using the human body as a communication medium,so it is also known as human body communication(HBC).Because of its absolute advantages compared with most radiation-based methods,this method is more and more widely replacing the traditional medical monitoring,so as to improve the application of medical services.In this system,the influence of the test fixture on the response characteristics of HBC channel is determined by experiments,and then an extended model is proposed.The extended model was applied to the actual channel measurement,and good experimental correlation was obtained through the test verification.The test results show that the influence of the test fixture on the characteristics of HBC channel can not be ignored.The extended model can help to describe the channel measurement characteristics correctly and provide a useful tool for better understanding the frequency distribution results related to the channel response.