Soil Water Extraction Using Porous Ceramic and Low-Power Pumping
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Solution Overview
Problem
Current methods for in situ soil water extraction are limited by high power consumption and intermittent operation due to the need for pumping capacity, which restricts continuous, long-term monitoring of soil water and nutrient content, especially during seasonal agricultural activities.
Innovation Solution
A soil water extraction device featuring a matrix body with a porous, hydrophilic ceramic channel and a low-power peristaltic pump system, controlled by a microcontroller, allows for continuous extraction of soil water with low power consumption, enabling stationary, frequent sampling over extended periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pumping system is used to extract soil water, then the extraction capacity is improved, but the power consumption increases
Solution Approach 1:
The patent employs a porous ceramic filter element that enables passive water extraction through capillary forces and pressure differentials without requiring high-power pumping systems. The porous structure allows selective water transport while maintaining low energy consumption, directly resolving the contradiction between extraction capacity and power consumption.
Solution Approach 2:
The invention utilizes hydraulic principles by employing a flexible membrane and pressure differentials to drive water extraction. The system uses natural pressure gradients and hydraulic pressure differences rather than mechanical pumping, achieving effective water extraction with minimal power consumption.
2Duration of action of moving object
If a high-power pump is used to ensure continuous extraction, then the extraction continuity is improved, but the autonomous battery operation is limited
Solution Approach 1:
The system performs self-service by using natural pressure differentials, capillary forces, and the inherent properties of the porous ceramic and flexible membrane to drive water extraction without requiring external power sources. This enables continuous operation powered by the soil water pressure itself, eliminating battery limitations.
Solution Approach 2:
The invention changes the operational parameters by transitioning from active mechanical pumping to passive pressure-driven flow. By utilizing natural pressure gradients and adjusting the flexibility of the membrane, the system achieves continuous operation without external power, extending autonomous battery operation indefinitely.
3Adaptability or versatility
If the device is removed for seasonal agricultural activities, then the adaptability is improved, but the monitoring continuity is disrupted
Solution Approach 1:
The patent employs a flexible membrane that can accommodate seasonal agricultural activities while maintaining the extraction function. The flexible membrane allows the device to be installed under crop canopies and remains functional during seasonal changes, eliminating the need for removal and ensuring continuous monitoring.
Solution Approach 2:
The device is designed with universal functionality that allows it to operate in various agricultural settings throughout the year. The extraction system can function under different crop types, soil conditions, and seasonal variations, providing continuous monitoring without requiring removal for seasonal activities.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device efficiently extracts a large sample volume with low power consumption, facilitating continuous, long-term monitoring of soil water and nutrient content without disrupting seasonal agricultural activities, ensuring reliable data collection and adaptive sampling based on soil moisture levels.
Implementation Method 1
porous, hydrophilic ceramic, which is likewise incorporated into the matrix body and which closes off the channel towards the soil side
Implementation Method 2
porous, hydrophilic ceramic
Data Source
AI summary
A soil-water extraction device, with at least one matrix body (I), into which at least one channel (2) for receiving a soil-water sample is formed, a porous, hydrophilic ceramic (3), which likewise is introduced into the matrix body and which closes off the channel toward the soil side, flush with the matrix body (I), and a hose (4), which leads from the opposite side of the channel to a pump (5) driven by a motor driver (6), wherein: the motor driver (6) is controlled by means of a microcontroller (7); the microcontroller (7) is connected to at least one interface (8); and, by means of the interface (8), information about the moisture (9) is given to the microcontroller, said information being compared with stored target values (11) Also, a method for extracting soil water.