Irrigation Nozzle Sensor Alignment Control
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Solution Overview
Problem
Conventional irrigation systems are inefficient, leading to inconsistent water coverage, excessive water usage, and increased costs due to wastage, particularly in irregularly shaped areas and areas that do not require irrigation, resulting in higher electrical expenses and soil maintenance issues from mineral deposits.
Innovation Solution
An automated irrigation system that includes a nozzle with a sensor and unit control system to adjust flow rate and position based on alignment guide changes, ensuring precise irrigation fluid application by detecting movement and wear using light and infrared sensors, and utilizing alignment guides to optimize nozzle placement and reduce overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional irrigation units distribute water in a full round, half-round, quarter-round or adjustable-type circular pattern, then the irrigation units can cover a large area, but obtaining consistent water coverage over a rectangular watering area is difficult or impossible, resulting in over watering and water waste
Solution Approach 1:
The irrigation system dynamically adjusts the spray pattern and flow rate based on real-time sensor feedback about ground conditions (wet/dry areas, slopes, elevations). The controller modulates the irrigation units to change spray patterns from fixed circular patterns to variable patterns that adapt to the rectangular watering area geometry and terrain variations, enabling consistent water coverage without over-watering.
Solution Approach 2:
Optical sensors detect the actual water coverage and ground conditions in real-time, providing feedback to the controller. The controller processes this information and adjusts the irrigation units' spray patterns and flow rates accordingly, creating a closed-loop control system that maintains consistent water coverage across the rectangular area while preventing over-watering in already saturated zones.
2Reliability
If overlapping spray regions are used to ensure all areas are adequately irrigated, then water coverage is improved, but certain areas receive 300% or more of the necessary amount of water, resulting in significant water waste
Solution Approach 1:
Optical sensors continuously monitor water coverage and ground moisture levels, providing real-time feedback to the controller. When an area receives sufficient water, the sensor detects this condition and the controller automatically reduces or stops water delivery to that specific zone, preventing over-watering while maintaining adequate coverage in all areas. This feedback mechanism eliminates the need for conservative over-watering strategies.
Solution Approach 2:
The irrigation system applies different water flow rates and spray patterns to different local zones based on real-time sensor detection of ground conditions. Each area receives customized irrigation treatment - areas that are already wet receive reduced or no water, while dry areas receive appropriate water amounts. This localized control eliminates uniform over-watering and optimizes water distribution across the entire rectangular area.
3Ease of operation
If irrigation occurs indiscriminately without considering ground conditions, then the system operation is simple, but runoff from elevated areas causes ponding in lower areas, resulting in insufficient water absorption at higher areas and saturation at lower areas
Solution Approach 1:
Optical sensors detect ground conditions including elevation variations, slopes, and existing moisture levels before and during irrigation. The controller receives this feedback and automatically adjusts spray patterns and flow rates to account for terrain variations - reducing water application on elevated areas prone to runoff and increasing water delivery to lower areas that need more water. This maintains simple operation while achieving precise water distribution adapted to topography.
Solution Approach 2:
The irrigation system dynamically adapts its operation based on real-time detection of ground conditions. Spray patterns and flow rates are continuously adjusted during irrigation to respond to elevation changes, slopes, and moisture levels. This dynamic adjustment enables the system to handle complex terrain variations while maintaining ease of operation through automated control, achieving accurate water distribution that prevents both runoff and ponding.
4Measurement precision
If alignment guides are used to detect movement and wear, then nozzle positioning precision is improved, but the device complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The system replaces complex mechanical positioning and alignment mechanisms with optical sensors and electronic control. Instead of using mechanical guides, linkages, and adjustment mechanisms to maintain nozzle positioning, the invention uses optical sensors to detect alignment guide positions and electronically controls nozzle actuators to maintain precise positioning. This substitution reduces mechanical complexity while achieving high measurement and positioning precision.
Solution Approach 2:
The irrigation units perform self-alignment and self-correction using optical sensors to detect alignment guides and automatic control systems to adjust nozzle positioning. The system continuously monitors its own position and makes real-time corrections without external intervention, maintaining precision while minimizing the need for complex manual alignment mechanisms and reducing overall system complexity through automated self-regulation.
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 achieves precise and efficient irrigation, reducing water waste, lowering costs, and minimizing soil maintenance issues by accurately targeting areas that require water while avoiding unnecessary irrigation, thus optimizing water usage and maintaining healthy vegetation.
Implementation Method 1
A sensor is positioned at a known location on the irrigation unit and is used to detect the position of an alignment guide
Implementation Method 2
detecting movement and wear using light and infrared sensors
Data Source
AI summary
An irrigation system (10) includes one or more alignment guides (38) and an irrigation unit (20). The irrigation unit (20) directs irrigation fluid (19) to at least a portion of an irrigation region (30). The irrigation unit (20) includes a nozzle (220), a sensor (260) that senses a change in position of a portion of the irrigation unit (20) relative to the alignment guides (38), and a unit control system (240). The sensor (260) can be an infrared sensor. The unit control system (240) receives information from the sensor (260) regarding the change in position and adjusts a flow rate of irrigation fluid (19) through the nozzle (220) and/or a position of the nozzle (220) relative to the alignment guides (38). The alignment guides (38) can be formed from a heat absorbing material that is sensed by the sensor (260).