煤矿井下信道建模及天线设计研究

The security of mine tunnel is important to the coal industry of China. The detection and position of the underground disaster have become the most urgent issue to be solved for the production in the coal mine. The aim of the program is to study the key technologies of detection and position in the mine tunnels, based on the wireless sensor network of IoT (Internet of Things). The studied technologies include channel modeling and antenna design for the specific requirements in the mine tunnel. For the channel modeling, we will study the data acquisition method based on the joint measurement by using the gyroscope and accelerometer. This method shows the merits of ease setup and mass data acquisition, appropriate for the accurate modeling. For the antenna part, the aim is to design the bi-directional high-gain endfire-radiated antenna, which is able to be adopted in the channel measurement. We will also examine the response characters of the mine tunnel, such as the response of multiple polarizations or multiple frequencies. The results also guide the antenna design in the mine tunnel for high data rate transmission. The significance of the program is to solve the problems of mass data acquisition for accurate channel modeling and suitable antenna design to improve the quality of communication in the mine tunnel, and the reliability of the overall system will also be enhanced for the security of coal industry.

矿井安全是我国煤炭产业发展的关键，对井下灾害信息进行探测定位成为在煤矿安全生产中最急需解决的问题之一。本课题针对井下无线信道的特点，以物联网无线传感器网络为基础，研究适合于井下无线定位的关键技术：信道建模和天线设计。在信道建模方面，探索井下信道基于陀螺仪和加速度计联合测量的数据获取方案，该方案测试条件简单，数据获取量大，适合建立基于海量数据的准确模型。在天线设计方案，针对井下特殊的地形，探索双向高增益端向辐射天线的设计方法；并在此基础上结合井下信道模型研究其无线信道的特性，如频率特性、极化特性等，探索可以提高井下信道传输速率的多频段、多极化天线形式。该课题的意义在于解决了井下信道海量数据的获取问题，并可以建立准确的信道模型；同时根据井下信道的具体情况，设计适合于该环境无线通信的天线方案，提高井下无线信道的通信质量，提高整个系统的准确性、可靠性，保证井下安全工作。

矿井安全是我国煤炭产业发展的关键，对井下灾害信息进行探测定位成为在煤矿安全生产中最急需解决的问题之一。本课题针对井下无线信道的特点，以物联网无线传感器网络为基础，研究适合于井下无线定位的关键技术：信道建模和天线设计。在信道建模方面，研制了一套井下信道测试系统，并在首都钢铁公司杏山铁矿进行了12天的井下测试，获得了大量实测数据,并对数据进行了分析。在天线设计方案，针对井下特殊的地形，研究了定向、双向、四方向高增益辐射天线。并利用不同的极化方式，研究了圆极化、线极化天线。课题做出了一批高水平的研究成果，发表SCI论文28篇，其中IEEE Trans论文9篇，IEEE Letters论文12篇。