Irrigation Mat with Permeable Membrane for Controlled Watering
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Solution Overview
Problem
Existing plant watering systems often overwater or underwater plants due to lack of moisture sensing, leading to soil contraction and inefficient water usage, as they do not account for the actual water needs of plants.
Innovation Solution
A plant watering system featuring an irrigation mat with a water reservoir and a slow-permeable membrane, optionally including a dryness sensor that detects soil moisture levels and alerts when refilling is needed, ensuring controlled water release and fertilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual or timed watering systems are used, then the system is simple to operate, but the plant cannot receive water at the optimal time leading to overwatering or underwatering
Solution Approach 1:
The system uses a moisture sensor that automatically detects soil moisture levels and triggers watering when the threshold is met, eliminating the need for manual intervention or complex timed scheduling while ensuring optimal watering timing
Solution Approach 2:
The moisture sensor provides continuous feedback about soil moisture conditions to the control system, which adjusts watering operations based on actual soil conditions rather than following a fixed schedule or manual input
2Measurement precision
If sophisticated moisture sensors with precise measurement are used, then the moisture measurement precision is improved, but the device complexity and cost increase
Solution Approach 1:
The system uses a simple resistive moisture sensor that measures moisture at the specific location where it is inserted in the soil, providing sufficient local measurement precision without the complexity of sophisticated electronic moisture sensors
Solution Approach 2:
The system employs a simple, inexpensive moisture sensor based on basic electrical resistance measurement rather than sophisticated electronic sensors, reducing device complexity and cost while providing adequate functionality for determining when plants need water
3Productivity
If water is applied quickly to dry soil, then the productivity of watering is improved, but the water flows past the soil into the catch basin instead of being soaked up
Solution Approach 1:
The system applies water in periodic cycles controlled by the moisture sensor, allowing the soil to absorb water at its natural rate and preventing water from flowing past the soil into the catch basin, thereby eliminating water loss while maintaining watering productivity
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 system minimizes overwatering and underwatering by providing a controlled water supply and fertilization, maintaining optimal soil moisture and improving plant health.
Implementation Method 1
a slow-pass water permeable membrane that releases the water in the water reservoir in a slow manner so the soil around the plant is watered at a controlled rate
Implementation Method 2
a dryness sensor that provides an alert indicating the water reservoir in the irrigation mat needs to be refilled
Data Source
AI summary
A plant watering system includes an irrigation mat that can be placed around a plant on top of the soil. The irrigation mat includes a water reservoir that holds water, and a slow-pass water permeable membrane that releases the water in the water reservoir in a slow manner so the soil around the plant is watered at a controlled rate. The irrigation mat may optionally include a threaded port where a container of liquid fertilizer can be placed so the liquid fertilizer is mixed with the water in the reservoir, allowing easily fertilizing the plant as it is watered. The plant watering system may also optionally include a dryness sensor that provides an alert indicating the water reservoir in the irrigation mat needs to be refilled.