India's economy is mainly reliant on agriculture and it is critical that agriculture thrives. The technologies are big, site-specific, and crop-specific, so they can only be used on broad areas. Therefore, there is a need for a technology that is smaller in size, independent of crop nature, field plot etc. Underground Wireless Sensor Network (WUSN) technology is found suitable for achieving agricultural automation. Magnetic induction methods are an effective communication technique for transferring this data. Meta-material (MM) is placed between the magnetic induction (MI) coils to extend the transmission distance range, resulting in MM enhanced Magnetic Induction (M2I). The permeability negative MM (MNG) is proposed in this paper, and 10 MHz transceiver coils are developed. The proposed MNG (mu(r) <0) design has a high transmission coefficient (S21) and acts as a perfect lens when mu(r) = -1. Theoretical and simulation studies are used to analyse both systems. The transmission distance is increased dramatically up to 1 m, and the transmission characteristics are improved from - 55.64 dB to - 32.04 dB, according to a performance comparison of the existing and proposed M2I systems. The study shows that using MMs in a MI coil system increases received power by 42.42 across a 1 m distance. As a result, an underground wireless communication system based on M2I can be used to effectively communicate sensor data to a farmer's mobile app via the cloud.
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机译：印度的经济主要依赖农业，农业蓬勃发展至关重要。这些技术规模庞大，针对特定地点和特定作物，因此它们只能用于广阔的区域。因此，需要一种尺寸更小、独立于作物性质、田地等的技术。 地下无线传感器网络（WUSN）技术适用于实现农业自动化。磁感应方法是传输这些数据的有效通信技术。超材料 （MM） 放置在磁感应 （MI） 线圈之间以扩展传输距离范围，从而产生 MM 增强磁感应 （M2I）。该文提出了磁导率负MM（MNG），并开发了10 MHz收发线圈。所提出的MNG（mu（r）<0）设计具有高透射系数（S21），当mu（r） = -1时，该设计可作为完美的透镜。理论和仿真研究用于分析这两个系统。根据现有和拟议的M2I系统的性能比较，传输距离大幅增加至1 m，传输特性从-55.64 dB提高到-32.04 dB。研究表明，在 MI 线圈系统中使用 MM 可在 1 m 距离内将接收功率提高 42.42%。因此，基于M2I的地下无线通信系统可用于通过云有效地将传感器数据传送到农民的移动应用程序。
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