An acoustic method for soil moisture measurement

被引：57

作者：

Adamo, F ^{[1
]}

Andria, G ^{[1
]}

Attivissimo, F ^{[1
]}

Giaquinto, N ^{[1
]}

机构：

[1] Polytech Bari, Dept Elect & Elect, I-70125 Bari, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2004年 / 53卷 / 04期

关键词：

audio systems; moisture measurement; propagation; signal analysis; soil measurement; velocity measurement;

D O I：

10.1109/TIM.2004.831126

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The paper deals with the problem of measuring the moisture of agricultural soils by an accurate, on-site, real-time method. The idea is to estimate the moisture by measuring the speed of sound in the medium: the main issue is therefore to determine a precise relationship between the two quantities. To this purpose, the Brutsaert's model for elastic waves in porous media is applied, taking into consideration different kinds of soil of common interest in agriculture. The authors have derived the speed-moisture curves, the conditions for the actual validity of the curves, and the suitable sound frequency for performing the measurement, for a wide range of agricultural soils in different physical conditions. The paper results are therefore the basis to realize an inexpensive and accurate moisture sensor for farmers.

引用

页码：891 / 898

页数：8

共 13 条

[1]

[Anonymous], J AM SOC SOIL SCI

[2] THEORY OF PROPAGATION OF ELASTIC WAVES IN A FLUID-SATURATED POROUS SOLID .1. LOW-FREQUENCY RANGE [J].