Presence-Sensing Showerhead Flow Control for Water Waste Reduction
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Solution Overview
Problem
Existing showerheads do not allow users to control water flow during intermediate tasks, leading to water waste, and lack automatic control based on the presence of individuals in the water path, requiring manual adjustment which is inconvenient.
Innovation Solution
A showerhead with sensors, such as photo-sensors, motion sensing LEDs, or passive infrared detectors, integrated to detect the presence of individuals within the water spray pattern, connected to a flow control valve that automatically adjusts water flow, reducing or shutting off water when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If manual flow control is used, then water flow can be adjusted during tasks, but user convenience deteriorates due to needing to manually adjust the valve
Solution Approach 1:
The showerhead system performs flow control automatically without requiring user intervention. The sensor detects user presence and the control valve autonomously adjusts water flow based on detected conditions, eliminating the need for manual valve adjustment while maintaining water conservation
Solution Approach 2:
The manual mechanical valve adjustment is replaced with an automated electronic control system. Sensors detect user presence and send signals to an electronic control valve that automatically regulates water flow, substituting the mechanical manual control system with an automated sensing and control system
2Productivity
If full unrestricted flow is maintained, then water pressure and availability are improved, but water waste increases during intermediate tasks
Solution Approach 1:
The water flow rate is made dynamic rather than static. The system automatically adjusts flow between full unrestricted flow and reduced flow states based on real-time sensor detection of user presence, optimizing water usage while maintaining showering effectiveness when needed
Solution Approach 2:
The system uses sensor feedback to automatically control water flow. The sensor continuously monitors for user presence and provides feedback to the control valve, which adjusts flow accordingly, creating a closed-loop control system that eliminates water waste during intermediate tasks
3Ease of operation
If automatic sensor control is added, then water conservation and convenience are improved, but device complexity increases
Solution Approach 1:
A control unit serves as an intermediary between the sensor and the valve mechanism. The sensor detects user presence and sends signals to the control unit, which then actuates the valve, providing a modular intermediate layer that manages the complexity of coordinating multiple components
4Loss of substance
If flow control valve is added, then water flow regulation capability is improved, but device complexity increases
Solution Approach 1:
Manual mechanical valve control is replaced with an electronically actuated valve system. The valve is controlled by electronic signals from the sensor through the control unit, substituting complex manual mechanical adjustment mechanisms with a simpler electronically controlled system
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 showerhead efficiently conserves water by maintaining full flow only when an individual is present, reducing waste by up to 80% during tasks, and allowing convenient hands-free operation.
Implementation Method 1
utilizes either photo-sensor detectors such as laser or motion sensing LED's
Implementation Method 2
or passive infrared detectors
Data Source
AI summary
A showerhead operable to reduce water consumption configured to detect the presence of an individual within the spray pattern of water exiting the showerhead. The showerhead further includes a housing having an internal volume that is configured to receive and discharge water. A sensor is integrally mounted to the discharge surface of the housing and is operable to detect either the presence or absence of an individual within the spray pattern of water. A valve is disposed within the housing and is operable to control the water volume exiting the housing. The showerhead being operable to discharge substantially all of the water volume available thereto upon the detection of an individual within the spray pattern and further being operable to discharge a water volume that is less than the water volume available thereto to upon detection of an absence of an individual within the spray pattern.