论文标题
使用无电池Wi-Fi标签检测土壤水分水平
Detecting Soil Moisture Levels Using Battery-Free Wi-Fi Tag
论文作者
论文摘要
土壤感知在增加农业产量和保护土壤地点方面起着重要作用。现有的土壤传感方法无法达到高精度和低成本。在本文中，我们设计并实施了称为Soiltag的高临界性和低成本的无芯片土壤水分感应系统。我们提出了一种一般的无芯片传感器设计方法，该方法可以使我们能够自定义信号特征，以感知土壤水分，而不是盲目捕获土壤的干扰定律。基于此原则，我们设计了一个无电池的被动标签，可以响应不同的土壤素。此外，我们优化了SOILTAG的硬件和算法设计，以定位被动标签并提取其反射信号功能，以使用WiFi信号识别土壤渗透。广泛的实验结果表明，它可以识别2％的绝对土壤水分含量，在开放田中的传感距离高达3M。当传感距离高达13 m时，它也可以实现5％的绝对土壤含量传感分辨率。
Soil sensing plays an important role in increasing agricultural output and protecting soil sites. Existing soil sensing methods failed to achieve both high accuracy and low cost. In this paper, we design and implement a high-accuracy and low cost chipless soil moisture sensing system called SoilTAG. We propose a general chipless sensor design methodology which can allow us to customize the signal feature for sensing soil moisture, instead of blindly capturing the disturbance law of the soil. Based on this principle, we design a battery-free passive tag which can respond to different soil-moisture. Further, we optimize hardware and algorithm design of SoilTAG to locate the passive tag and extract its reflection signal feature to identify soil-moisture using WiFi signals. Extensive experimental results reveal that it can identify 2% absolute soil water content with a sensing distance up to 3m in open field. When the sensing distance is up to 13 m, it can also achieve 5% absolute soil-moisture sensing resolution.
