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在不同的土壤和可变电导率下,TEROS 12土壤湿度传感器的响应

Athanasios Fragkos¹, Dimitrios Loukatos¹, Georgios Kargas¹

¹Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Str., 11855 Athens, Greece.

Sensors (Basel, Switzerland)

|April 13, 2024

概括

这是一个 TEROS 12 传感器.

科学领域:

土壤科学土壤科学
环境监测环境监测
电气工程电气工程

背景情况:

准确测量土壤特性对于环境和农业应用至关重要.
像TEROS 12这样的电磁传感器被广泛用于土壤水含量和电导率.
传感器的性能可能会受到土壤类型,含水量和溶液导电性的影响.

研究的目的:

为了评估TEROS 12电磁传感器在各种土壤条件下的性能.
为了评估传感器在测量体积土壤含水量 (θ) 和散装电导率 (σb) 中的准确性.
调查土壤类型和土壤溶液 (ECw) 的电导率对传感器读数的影响.

主要方法:

实验室实验使用六种不同的多孔介质进行.
TEROS 12传感器的性能在一系列土壤水含量 (θ) 和电导率 (ECw) 水平上进行了测试.
为了传感器集成,开发了一种具有低成本微控制器和适应电路的原型设备.

主要成果:

TEROS 12表面介电导电性 (εa) 的读数低于Topp的关系,特别是在含水量高的粗土壤中.
在测量土壤含水量 (θm) 和 εa^0.5 (R2 > 0.869) 之间发现了强烈的线性关系,但随着批量EC (σb) 的增加,线性性下降.
多点校准方法 (CAL) 提供了最准确的结果,在 σb < 2.5 dS / m 的情况下, εa 降解,并与 σb 呈现线性关系.

结论:

TEROS 12 传感器的精度受土壤类型和电导率的影响.
校准方法显著影响测量准确性,多点校准优越.
了解 εa,sb 和土壤特性之间的关系对于可靠的土壤监测至关重要.

关键词:

在 TEROS 12 中,有 12 个 TEROS.显而易见的介电导电性.校准校准的时间植物生产植物生产电导率是指电导的电导率.基于微控制器的测量资源保护资源保护土壤水分土壤水分

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