Antifouling Water Quality Sensor Probe Design
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Solution Overview
Problem
Water quality monitoring sensors are prone to fouling due to factors like algae growth, mineral deposits, and sedimentation, leading to increased maintenance costs and reduced accuracy, which affects the reliability and longevity of turbidity and other water quality measurements.
Innovation Solution
The integration of antifouling control mechanisms, including antifoulant components, material components, wiping control components, and shutter components, in water quality probes to delay or prevent fouling, thereby extending the service interval and maintaining measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are deployed for water quality monitoring, then measurement capability is provided, but fouling occurs over time reducing accuracy and requiring maintenance
Solution Approach 1:
The patent applies preliminary action by incorporating antifouling components (such as antifoulant reservoirs, wiping mechanisms, and protective coatings) into the sensor assembly before deployment. These components proactively prevent or mitigate fouling accumulation on the sensor surface, extending the service interval and maintaining measurement reliability without requiring frequent maintenance interventions
Solution Approach 2:
The patent implements self-service through automated antifouling mechanisms that operate without external intervention. Examples include motorized wiping components that periodically clean the sensor surface, antifoulant dispensing systems that automatically apply protective substances, and heating elements that prevent biofouling through thermal treatment. These self-service features reduce maintenance requirements and extend operational duration
2Productivity
If sensors operate continuously in water environments, then water quality data is collected, but fouling increases maintenance costs
Solution Approach 1:
The patent employs composite materials by combining the sensor element with antifouling materials such as biocidal coatings, hydrophobic surfaces, or anti-adhesive layers. These composite structures provide both the sensing function and fouling resistance, allowing continuous operation at high monitoring frequencies while reducing the frequency and cost of maintenance interventions
3Duration of action of stationary object
If antifouling components are added to sensors, then service interval is extended, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating antifouling components directly into the sensor probe assembly. The antifoulant reservoir, dispensing mechanism, wiping components, and sensor elements are combined into a single integrated unit, allowing the extended service interval benefits to be achieved without proportionally increasing overall device complexity
Solution Approach 2:
The patent implements multi-functionality by designing components that serve multiple purposes. For example, the probe housing provides both structural support and protection for antifouling mechanisms, while wiping components serve both cleaning and structural support functions. This approach extends service interval while minimizing the increase in device complexity
Data Source
AI summary
A probe with antifouling components. The probe includes a sensor for measuring attributes of a fluid such as liquid or gas. The probe includes antifouling components to prevent or inhibit fouling. The antifouling components include material components, antifoulant components such as biocide, scaling inhibitors, etc., and wiper/shutter components that are arranged to collectively prevent or inhibit fouling of the probe or of the sensor included in the probe.