Irrigation Valve Actuation With Tamper-Proof Remote Flow Control
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Solution Overview
Problem
Current agricultural water flow control systems are unreliable and labor-intensive due to manual operation, vulnerability to damage, and lack of accountability, leading to issues like overwatering, underwatering, and tampering.
Innovation Solution
A water control device utilizing Electric Motor Driven Mechanical Actuation (EMDMA) with a diverter valve and flow adjustment screw, featuring a tamper-proof design and remote control capabilities via a mesh network, allowing for automated and accountable water flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation of irrigation valves is used, then device complexity is reduced, but reliability deteriorates due to human error and lack of accountability
Solution Approach 1:
The irrigation valve system performs self-service through automated control. The controller automatically actuates valves based on pre-programmed schedules without requiring manual intervention. The system monitors its own operation through indicators that show valve status (open/closed) and provides self-diagnosis capabilities, eliminating the need for constant human monitoring while maintaining high reliability.
Solution Approach 2:
The system incorporates feedback mechanisms through visual indicators (LED lights) that provide real-time information about valve status and system operation. The indicators show whether valves are open or closed, and alert operators to any malfunctions or errors. This feedback loop ensures accountability and allows the system to maintain reliable operation while reducing manual intervention.
2Extent of automation
If solenoid valves with line voltage power are used, then automation is achieved, but ease of operation deteriorates due to wiring vulnerability and maintenance difficulty
Solution Approach 1:
The system replaces traditional solenoid valves that require line voltage wiring with a mechanical actuation system controlled by a low-voltage controller. The controller uses a mechanical diverter mechanism with plungers to redirect water pressure, eliminating the need for vulnerable electrical wiring in the field. This substitution maintains full automation capability while dramatically improving ease of operation and reducing maintenance requirements.
Solution Approach 2:
The system introduces an intermediary mechanical control mechanism between the electrical controller and the valve actuation. The controller sends low-voltage signals that activate mechanical plungers, which then divert water pressure to actuate the valves. This intermediary mechanism protects against electrical wiring vulnerabilities while maintaining automated control, making the system easier to operate and maintain in agricultural settings.
3Ease of operation
If flow control knobs are made accessible for adjustment, then ease of operation is improved, but security deteriorates due to tampering risks
Solution Approach 1:
The system segments the control functionality by separating the electronic control components from the flow adjustment mechanism. The controller handles automated scheduling and actuation, while the flow adjustment screw remains a simple mechanical component that can be accessed only when needed. This segmentation allows easy legitimate adjustment while reducing opportunities for malicious tampering, as the critical control functions are protected by the automated system.
Solution Approach 2:
The system uses visual indicators (LED lights) as copies or representations of the actual valve status. Instead of requiring physical access to valves or complex control interfaces, operators can monitor and control the system remotely through these visual copies of the system state. This reduces the need for physical access points that could be tampered with, while maintaining ease of operation through simple visual feedback.
4Extent of automation
If extensive wiring is used for field automation, then automation capability is improved, but reliability deteriorates due to wiring damage and maintenance difficulty
Solution Approach 1:
The system replaces extensive electrical wiring with a mechanical control architecture. The controller uses low-voltage circuits and mechanical linkages to actuate valves, eliminating the need for vulnerable high-voltage wiring throughout the field. The mechanical diverter mechanism and plunger system provide reliable actuation without exposing the system to wiring-related failures, maintaining high automation capability while improving reliability in harsh agricultural environments.
Solution Approach 2:
The system introduces an intermediary low-voltage control system between the automated control logic and the valve actuation mechanism. This intermediary layer uses minimal wiring and mechanical components to transmit control signals, protecting the system from the reliability issues associated with extensive high-voltage wiring. The intermediary mechanism maintains full automation capability while significantly reducing vulnerability to field conditions.
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 solution provides reliable, automated, and accountable water flow control, reducing manual labor, minimizing damage risks, and ensuring precise irrigation schedules, thereby improving crop health and reducing operational costs.
Implementation Method 1
The actuation device includes an electric motor
Implementation Method 2
A turbine assembly is disposed within the valve body upstream of the diaphragm valve assembly
Implementation Method 3
A Hall effect sensor is disposed within the control assembly
Data Source
AI summary
A water control device includes a valve pipe section with a controllable valve configured for controlling flow of a fluid and/or a gas therethrough having a fluid inlet opposite a fluid outlet. A first pipe stub defines a first end opposite a flanged end. An inlet-side nut is configured to be disposed around the first pipe stub and the first end of the first pipe stud is configured to be permanently attached to a first pipe section. The flanged end is configured to attach to the fluid inlet of the valve pipe section by the inlet-side nut abutting the flanged end of the first pipe stub when internal screw threads of the inlet-side nut threadably engages with external screw threads of fluid inlet of the valve pipe section. A second pipe stub is similarly attached to the fluid outlet by a similarly constructed outlet-side nut.