Multi-Depth Soil Sensor for Irrigation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Irrigation systems face challenges in efficiently managing water distribution to plants, particularly in situations where the watering area requires more water than available from the water main, leading to the need for zone separation and manual valve control.
Innovation Solution
A soil property sensor system with multiple sensors, including moisture and pH sensors, is introduced. This system measures soil properties at different depths, generates a soil property gradient, and wirelessly transmits data to an irrigation controller, allowing for automated adjustments to watering programs based on real-time soil conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors at different depths are used to measure soil properties, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The soil property sensor is divided into multiple sensing elements positioned at different depths (first sensor at upper depth, second sensor at lower depth). Each sensor measures soil properties at its specific depth, enabling gradient calculation and more precise characterization of soil conditions throughout the root zone without requiring a single complex deep-sensing device.
Solution Approach 2:
The system transitions from single-point measurement to multi-depth measurement by adding the depth dimension. By placing sensors at different vertical positions (first depth and second depth), the system captures soil property variations through the soil profile, enabling gradient analysis and more comprehensive soil condition assessment.
2Productivity
If automated irrigation control based on real-time soil data is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The system establishes a feedback loop where soil property sensors continuously measure soil conditions (moisture, temperature, pH) at multiple depths, the controller receives this real-time data, and automatically adjusts irrigation valve operation accordingly. This closed-loop control optimizes water application based on actual soil conditions, improving watering efficiency while maintaining manageable system complexity through automated decision-making.
Solution Approach 2:
The irrigation system becomes self-regulating by using its own sensor data to control its operation. The controller automatically interprets soil property measurements and adjusts valve timing and duration without external intervention, allowing the system to self-optimize irrigation schedules based on real-time soil conditions, thereby improving productivity through automated management.
3Loss of substance
If soil property gradients are calculated and used for irrigation control, then loss of substance is reduced, but measurement precision requirements increase
Solution Approach 1:
By segmenting the measurement process into multiple depth levels (first sensor depth and second sensor depth), the system captures vertical soil property variations. This segmentation enables calculation of soil property gradients, which reveal how moisture and other properties change with depth, allowing precise identification of water distribution patterns and reduction of water waste through targeted irrigation adjustments.
Data Source
AI summary
A soil property sensor may include a housing having an upper end and a lower end and an opening. A soil property sensor may include a plurality of sensors located in the housing, the plurality of sensors including: a first soil property sensor located at the upper end of the housing; and a second soil property sensor located at the lower end of the housing. A soil property sensor may include a power source located in the housing, the power source providing power to the plurality of sensors. A soil property sensor may include a wireless communication system. A soil property sensor may include a sensor cover at the opening, the sensor cover forming a waterproof seal into the opening.