Effective Calibration of Low-Cost Soil Water Content Sensors
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Citation
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| Title: | Main Title: Effective Calibration of Low-Cost Soil Water Content Sensors |
| Description: | Abstract: Soil water content is a key variable for understanding and modelling ecohydrological processes. Low-cost electromagnetic sensors are increasingly being used to characterize the spatio-temporal dynamics of soil water content, despite the reduced accuracy of such sensors as compared to reference electromagnetic soil water content sensing methods such as time domain reflectometry. Here, we present an effective calibration method to improve the measurement accuracy of low-cost soil water content sensors taking the recently developed SMT100 sensor (Truebner GmbH, Neustadt, Germany) as an example. We calibrated the sensor output of more than 700 SMT100 sensors to permittivity using a standard procedure based on five reference media with a known apparent dielectric permittivity (1 < Ka < 34.8). Our results showed that a sensor-specific calibration improved the accuracy of the calibration compared to single “universal” calibration. The associated additional effort in calibrating each sensor individually is relaxed by a dedicated calibration setup that enables the calibration of large numbers of sensors in limited time while minimizing errors in the calibration process. |
| Identifier: | 10.3390/s17010208 (DOI) |
Responsible Party
| Creators: | Heye Bogena (Author), Johan A. Huisman (Author), Bernd Schilling (Author), Ansgar Weuthen (Author), Harry Vereecken (Author) |
| Publisher: | MDPI |
| Publication Year: | 2017 |
Topic
| TR32 Topic: | Soil |
| Related Subproject: | C1 |
| Subject: | Keyword: Hydrological Modelling |
File Details
| Filename: | Bogena2017.pdf |
| Data Type: | Text - Article |
| File Size: | 2.3 MB |
| Date: | Available: 21.01.2017 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Free |
| General Access and Use Conditions: | According to the TR32DB data policy agreement. |
| Access Limitations: | According to the TR32DB data policy agreement. |
| Licence: | [TR32DB] Data policy agreement |
Geographic
Specific Information - Publication
| Publication Status: | Accepted |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Sensors |
| Source Website: | http://www.mdpi.com/1424-8220/17/1/208 |
| Issue: | 1 |
| Volume: | 17 |
| Number of Pages: | 12 (1 - 12) |
Metadata Details
| Metadata Creator: | Michael Stockinger |
| Metadata Created: | 31.05.2017 |
| Metadata Last Updated: | 31.05.2017 |
| Subproject: | C1 |
| Funding Phase: | 3 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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Dataset Statistics
| Page Visits: | 841 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 4 |
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