Closed-Loop Water Clarity Control for Pool Sanitization
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Solution Overview
Problem
Existing water treatment systems in pools and spas often rely on open loop control systems, leading to issues with over-sanitation and under-sanitation, particularly in salt water systems, where sanitizer levels can fluctuate unpredictably due to varying usage patterns, causing corrosion and health hazards.
Innovation Solution
A closed loop system that uses a water chamber with a light source and light sensitive detection circuit to assess water clarity, sending signals to the treatment system to adjust sanitizer levels automatically, ensuring consistent disinfectant levels and minimizing over-chlorination or under-chlorination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If open loop control systems are used for water treatment, then device complexity is reduced, but sanitizer level stability deteriorates leading to over-sanitation and under-sanitation
Solution Approach 1:
The patent implements a closed-loop control system that continuously measures water clarity using a light source and photodetector, then feeds this information back to automatically adjust sanitizer dosing. This feedback mechanism eliminates the instability of open-loop systems by dynamically responding to actual water conditions, maintaining consistent sanitizer levels without manual intervention.
Solution Approach 2:
The patent replaces manual mechanical control (timers and switches) with an automated optical sensing and electronic control system. The light source and photodetector detect water clarity changes, and an electronic controller automatically adjusts the sanitizer dosing pump, substituting mechanical open-loop control with an automated closed-loop system that maintains sanitizer stability.
2Ease of operation
If manual timer control is used for chlorine generators, then ease of operation is improved, but reliability of sanitation deteriorates due to unpredictable sanitizer levels
Solution Approach 1:
The system enables the water treatment system to self-regulate by automatically monitoring water clarity and adjusting sanitizer dosing without manual intervention. The closed-loop control system performs self-service sanitation management, eliminating the need for manual timer adjustments while ensuring reliable sanitation through continuous automatic adaptation to water quality changes.
Solution Approach 2:
The patent implements automatic feedback control where the photodetector continuously monitors water clarity and feeds this information back to the controller, which automatically adjusts sanitizer dosing. This eliminates manual control while maintaining high reliability through continuous automatic response to actual water conditions.
3Reliability
If high sanitizer levels are maintained continuously, then sanitation reliability is improved, but harmful factors increase due to corrosion and equipment damage
Solution Approach 1:
The patent implements dynamic sanitizer dosing that automatically adjusts dosage based on real-time water clarity measurements. Instead of maintaining continuously high sanitizer levels, the system dynamically modulates dosing to match actual sanitation needs, reducing harmful effects like corrosion while maintaining reliable sanitation through adaptive control.
Solution Approach 2:
The system changes the sanitizer dosage parameter dynamically based on water clarity measurements. The controller adjusts the dosing rate according to detected turbidity levels, maintaining high sanitizer levels only when needed and reducing them when water is clear, thereby preventing corrosion and equipment damage while ensuring sanitation reliability.
4Stability of the object's composition
If continuous monitoring and adjustment is implemented, then sanitizer level stability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex manual monitoring and adjustment procedures with an automated optical sensing system and electronic controller. The light source, photodetector, and microprocessor-based controller work together to automatically measure water clarity and adjust sanitizer dosing, achieving high sanitizer stability while keeping the system relatively simple through automation rather than manual intervention.
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
This system provides continuous feedback to maintain optimal sanitizer levels, reducing the risk of corrosion, health hazards, and equipment damage while extending the life of chlorine generators and minimizing sanitizer use, all at a low cost.
Implementation Method 1
employing a light source to light up water contained in the water chamber, providing a light sensitive detection circuit near the transparent window
Implementation Method 2
utilize systems that transform salt in the water (NaCl) to pure Chlorine (Cl) through electrolysis
Data Source
AI summary
A system, method and apparatus for determining and controlling water clarity or water opacity especially useful in pools, spas, and contained bodies of water.