• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Sensing for agriculture and food quality and safety V >A Multi-frequency, Self-Calibrating, In-Situ Soil Sensor with Energy Efficient Wireless Interface
【24h】

A Multi-frequency, Self-Calibrating, In-Situ Soil Sensor with Energy Efficient Wireless Interface

机译：具有节能无线接口的多频率，自校准原位土壤传感器

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Real time and accurate measurement of sub-surface soil moisture and nutrients is critical for agricultural and environmental studies. This paper presents a novel on-board solution for a robust, accurate and self-calibrating soil moisture and nutrient sensor with inbuilt wireless transmission and reception capability that makes it ideally suited to act as a node in a network spread over a large area. The sensor works on the principle of soil impedance measurement by comparing the amplitude and phase of signals incident on and reflected from the soil in proximity of the sensor. Accuracy of measurements is enhanced by considering a distributed transmission line model for the on-board connections. Presence of an inbuilt self-calibrating mechanism which operates on the standard short-open-load (SOL) technique makes the sensor independent of inaccuracies that may occur due to variations in temperature and surroundings. Moreover, to minimize errors, the parasitic impedances of the board are taken into account in the measurements. Measurements of both real and imaginary parts of soil impedance at multiple frequencies gives the sensor an ability to detect variations in ionic concentrations other than soil moisture content. A switch-controlled multiple power mode transmission and reception is provided to support highly energy efficient medium access control.1
机译：实时和准确测量地下土壤的水分和养分对农业和环境研究至关重要。本文提出了一种新颖的机载解决方案，用于具有内置无线传输和接收功能的坚固，准确和自校准的土壤水分和养分传感器，使其非常适合充当大面积网络中的节点。传感器通过比较入射到传感器附近土壤上并从土壤反射的信号的幅度和相位，从而根据土壤阻抗测量原理进行工作。通过考虑用于车载连接的分布式传输线模型，可以提高测量的准确性。采用标准短开负荷（SOL）技术的内置自校准机制的存在，使传感器不受温度和环境变化引起的误差的影响。此外，为了使误差最小化，在测量中要考虑板子的寄生阻抗。在多个频率下对土壤阻抗的实部和虚部进行测量，使传感器能够检测除土壤水分以外的离子浓度变化。提供了开关控制的多功率模式发送和接收，以支持高效节能的媒体访问控制。1

著录项

  • 来源
  • 会议地点 Baltimore MD(US)
  • 作者

    Gunjan Pandey; Ratnesh Kumar; Fellow IEEE; Robert J. Weber; Fellow IEEE;

  • 作者单位

    Dept. of Electrical and Computer Engineering, Iowa State University, Ames, IA;

    Dept. of Electrical and Computer Engineering, Iowa State University, Ames, IA;

    Dept. of Electrical and Computer Engineering, Iowa State University, Ames, IA;

    Dept. of Electrical and Computer Engineering, Iowa State University, Ames, IA;

    Dept. of Electrical and Computer Engineering, Iowa State University, Ames, IA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号