System for measuring the moisture content of a granular medium

The system addresses the challenge of inaccurate moisture measurement by isolating sensors from soil interference, using a collection and transport system to accurately measure moisture content in granular media.

FR3170002A1Pending Publication Date: 2026-06-19COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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Patent Information

Application Number
FR2024014031
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing low-cost moisture measurement systems for granular media, such as capacitive sensors, are influenced by factors like temperature and soil conductivity, making it difficult to accurately measure moisture content.

Method used

A system comprising a collection element, reservoir, humidity sensors, temperature and conductivity sensors, and transport means to isolate moisture measurement from soil contact, using a pipe and suction pump to transport water for conductivity measurement, with ion concentration sensors and wireless communication.

Benefits of technology

Provides accurate moisture measurements by isolating sensors from soil interference, reducing sensitivity to temperature and conductivity variations, and extending sensor lifespan through cleaning and calibration methods.

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Abstract

System for measuring the moisture content of a granular medium. This description relates to a system (1) for measuring the moisture content of a granular medium (2) comprising a collection element (3) intended to be placed in the granular medium (2) in contact with the granular medium (2), and configured to collect water present in the granular medium (2), a reservoir (14) for receiving the collected water, moisture sensors (16) in regions at least partially distinct from the granular medium (2), at least one temperature sensor (24), at least one conductivity sensor (26) configured to measure the conductivity of the water received in the reservoir (14), and transport means (18, 21) configured to transport water from the reservoir (14) to the conductivity sensor (26). Figure for the abstract: Fig. 1
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