Electronic Faucet Sensor Hierarchy for Operational Clarity
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Solution Overview
Problem
Electronic plumbing fixture fittings with multiple triggering mechanisms can confuse users about which mechanism is active at any given time, leading to operational uncertainty.
Innovation Solution
The implementation of a hierarchical sensor system comprising a toggle sensor and a presence sensor, where the toggle sensor activates and deactivates the electronic valve based on object entry and reentry into specific zones, while the presence sensor activates and deactivates the valve based on object presence, with a mechanical valve controlling the primary operation, ensuring clear activation and deactivation rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple triggering mechanisms are provided, then the ease of operation is improved, but the device complexity increases and user confusion occurs
Solution Approach 1:
The patent segments the triggering mechanisms into distinct sensor types (first proximity sensor, second proximity sensor, mechanical valve sensor) with clearly defined zones and functions. Each sensor operates independently with specific activation/deactivation rules, dividing the control system into manageable segments that reduce overall complexity while maintaining multiple operation methods
Solution Approach 2:
The patent implements dynamic control logic where the activation and deactivation behavior changes based on the current state. When the first proximity sensor activates the valve, only the first sensor can deactivate it. When the second proximity sensor activates, both sensors can deactivate. This dynamic state-dependent behavior allows multiple triggering mechanisms to coexist without causing user confusion
2Adaptability or versatility
If multiple triggering mechanisms are provided, then the adaptability is improved, but the reliability decreases due to operational uncertainty
Solution Approach 1:
The patent incorporates feedback mechanisms where the system continuously monitors which sensor triggered the valve activation and uses this information to determine valid deactivation paths. The control logic provides feedback about the current operational state, ensuring that deactivation actions are reliable and predictable based on how the valve was activated, thereby maintaining reliability while supporting multiple triggering mechanisms
3Ease of operation
If hierarchical sensor control is implemented, then the device complexity increases, but the ease of operation improves by reducing user confusion
Solution Approach 1:
The patent establishes preliminary action rules that define the hierarchy before operation begins. The system pre-configures which sensors can activate and deactivate the valve under specific conditions, so users don't need to understand the complex hierarchy during operation. The activation/deactivation rules are predetermined and automatically applied, reducing user confusion while implementing hierarchical control
Data Source
AI summary
The present invention provides an electronic plumbing fixture fitting, such as an electronic faucet.