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针对稻田植株面积广、对无线信号传输干扰大等特点,综合运用全向天线和定向天线的通信性能优势,本文设计了混合天线WSN组网模型;对不同天线的通信距离进行了理论分析和现场测试;并通过组网试验验证了混合天线组网方案相比全向天线组网的优势。试验结果表明,与全向天线WSN相比,在相同的网络覆盖面积下,混合天线WSN中簇头节点的生命周期提高了48%,丢包率降低了84%;在相同的能耗条件下,其覆盖面积提高了2.2倍。本文为大覆盖区域内的WSN组网方法提供了技术参考。
Aiming at the characteristics of wide plant area of rice field and large interference to wireless signal transmission, the hybrid antenna WSN networking model is designed by comprehensively using the communication performance advantages of omnidirectional antenna and directional antenna. Theoretical analysis and field analysis of the communication distance of different antennas are carried out Test; and through networking test to verify the advantages of hybrid antenna networking scheme compared to omni-directional antenna networking. The experimental results show that the lifetime of cluster head node in hybrid antenna WSN is increased by 48% and the packet loss rate is reduced by 84% under the same network coverage compared with omnidirectional antenna WSN. Under the same energy consumption , Its coverage area increased by 2.2 times. This article provides a technical reference for the WSN networking method in a large coverage area.