Adaptive Plant Irrigation via Soil Moisture Feedback
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Solution Overview
Problem
Current watering systems are inflexible and often result in either overwatering or underwatering, as they rely on fixed timers and do not account for varying soil moisture levels or climate changes, leading to inefficient water use, especially in regions with scarce water resources.
Innovation Solution
An intelligent method and device that uses a soil moisture sensor and electronic controller to automatically determine optimal watering duration, adjusting for short, medium, and long-term temperature changes, and taking into account plant growth and environmental conditions, ensuring the soil remains adequately moist without excess water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If fixed timer-based watering systems are used, then watering can be automated and performed at preset times, but water is wasted through overwatering or underwatering since actual plant needs are not considered
Solution Approach 1:
The system continuously measures soil moisture levels using a sensor and feeds this information back to the controller, which adjusts the watering duration accordingly. This closed-loop feedback mechanism ensures water is applied only when needed and in the precise amount required, eliminating both overwatering and underwatering while maintaining full automation.
Solution Approach 2:
The watering duration is made dynamic rather than fixed. The system automatically adjusts the irrigation time based on real-time soil moisture measurements, plant water requirements, and environmental conditions. This dynamic adaptation allows the system to respond to changing conditions throughout the day and season, optimizing water usage while maintaining automation.
2Loss of substance
If soil moisture sensors are used to prevent unnecessary watering, then water consumption is reduced, but the amount of water administered remains fixed and does not adapt to varying plant needs or climate fluctuations
Solution Approach 1:
The system calculates and adjusts the watering duration dynamically based on the measured soil moisture deficit, plant-specific water requirements, and current environmental conditions. The controller modifies the irrigation time in real-time rather than using a fixed duration, enabling the system to adapt to both short-term fluctuations and long-term climate changes while maintaining reduced water consumption.
Solution Approach 2:
The system changes the watering duration parameter automatically based on measured soil moisture levels and calculated plant water needs. Rather than keeping a fixed water amount, the system adjusts this critical parameter dynamically, allowing adaptation to varying plant growth stages, weather conditions, and soil types while preventing water waste through precise dosage control.
3Ease of operation
If traditional timers control watering duration, then the system is simple to operate, but the fixed watering duration cannot compensate for temperature changes or plant growth requirements
Solution Approach 1:
The system performs self-adjustment by automatically calculating the required watering duration based on measured soil moisture, plant water requirements, and environmental conditions. The controller autonomously modifies the irrigation parameters without requiring user intervention or complex programming, maintaining ease of operation while gaining advanced adaptability to climate changes and plant growth needs.
Data Source
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AI summary
The invention relates to a method for the automatic irrigation of plants, wherein the temporal progression of soil moisture is determined from measured soil moisture values, and said progression is used for the calculation of an optimized irrigation time duration, such that both water excess in the soil and soil drying are avoided as much as possible. Preferably, the time duration of irrigation is constantly evaluated and optimized using comparisons of measured values with prespecified moisture- and dryness threshold values (TVmoist, TVdry), and automatically adjusted to changing environmental conditions and/or plant requirements.