Gravity Irrigation Control for Consistent Soil Saturation
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Solution Overview
Problem
Existing systems for watering plants often result in inconsistent moisture levels in the soil, leading to potential plant death due to overwatering or underwatering, and there is a need for a system that provides consistent soil moisture independent of climate and plant size.
Innovation Solution
A fluid dispensing device with a container having apertures and a control mechanism that adjusts fluid flow based on a detected threshold quantity, using gravity and adhesion to regulate the flow rate and prevent over-saturation, featuring a collection tray that mechanically blocks fluid supply when a threshold is reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional watering system is used, then fluid can be supplied to the plant growing media, but the moisture levels become inconsistent leading to overwatering or underwatering
Solution Approach 1:
The system uses the collected fluid itself to trigger the blocking mechanism. When fluid accumulates in the collection tray to a threshold level, its own weight actuates the lever to block the supply, eliminating the need for external sensors or power sources.
Solution Approach 2:
The system provides automatic feedback by using the accumulated fluid volume to control further fluid supply. The collection tray's fluid level directly influences the blocking mechanism, creating a self-regulating feedback loop that prevents overwatering.
2Quantity of substance
If fluid flow rate is increased to ensure adequate watering, then plant moisture supply is improved, but over-saturation and water waste occur
Solution Approach 1:
The system is designed with a collection tray and blocking mechanism that activate before the plant media becomes over-saturated. The threshold trigger is set to prevent excessive fluid accumulation, ensuring adequate but not excessive watering.
Solution Approach 2:
The accumulation of fluid in the collection tray provides immediate feedback that triggers the blocking mechanism, preventing continuous over-supply and ensuring the plant receives adequate but not excessive water.
3Reliability
If a blocking mechanism is added to prevent over-saturation, then fluid distribution control is improved, but device complexity increases
Solution Approach 1:
The blocking mechanism is actuated by the fluid itself through weight-based lever action, eliminating the need for external motors, sensors, or power sources. The system uses pure mechanical principles to achieve automatic control.
Solution Approach 2:
The complex electronic control systems found in modern irrigation devices are replaced by extracting and using only the essential mechanical elements - a lever, fulcrum, and blocking member - to achieve the same control function with minimal complexity.
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
Ensures consistent and controlled distribution of fluid to plant growing media, maintaining optimal moisture levels by preventing over-saturation and ensuring even distribution, thereby promoting healthy plant growth.
Implementation Method 1
controlling a flow of the fluid through the apertures by a plurality of protrusions distributed among the apertures
Implementation Method 2
using gravity and adhesion to regulate the flow rate
Data Source
AI summary
A fluid dispensing device using only gravity to provide fluid to plant growing medium, for example soil, to the point of either saturation or field capacity. The fluid dispensing device may comprise a mechanism to cease supply of fluid when a threshold amount of fluid in a plant growing medium is detected. The fluid dispensing device may be used to calculate field capacity of different soils. The invention further discloses a gravity powered device for irrigating an area evenly and at a constant rate of irrigation.