Adaptive Flush Toilet Controller for Dynamic Water Usage
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Solution Overview
Problem
Conventional flush toilets cannot adjust the instantaneous flow rate of rim spouting water or the flush water amount based on the waste state for each flush, leading to excessive water usage when the waste amount is less than the predetermined amount.
Innovation Solution
A flush toilet equipped with a bowl, discharge trap conduit, spouting portion, flush water supply device, waste information acquisition device, and a controller that determines the waste state and adjusts the spout mode of the flush water to optimize water usage based on the waste state for each flush.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flush water amount is set to a constant predetermined amount to ensure discharge of various waste states, then waste discharge reliability is improved, but water consumption increases when waste amount is less than the predetermined amount
Solution Approach 1:
The flush toilet dynamically adjusts the flush water amount based on the detected waste state. The controller changes the discharge volume of flush water according to the waste amount detected by the waste information acquisition device, transitioning from a static constant flush amount to a dynamic adaptive flush amount that matches actual waste conditions.
Solution Approach 2:
The system changes the parameter of flush water amount based on waste state detection. The controller modifies the discharge volume parameter of flush water according to the waste amount detected, enabling variable flush amounts (large flush, small flush, eco-small flush) to optimize water usage while ensuring adequate waste discharge.
2Reliability
If the instantaneous flow rate of rim spouting water is changed for subsequent flushes based on waste presence, then waste discharge performance is improved, but the ability to adjust for each individual flush is limited
Solution Approach 1:
The waste information acquisition device detects the waste state and provides feedback to the controller, which then adjusts the flush water amount for the next flush. This feedback loop enables the system to adaptively optimize water usage based on actual waste conditions detected after each flush cycle.
Solution Approach 2:
The system performs preliminary detection of waste state before the flush operation and pre-adjusts the flush water amount accordingly. The controller determines the appropriate flush water volume based on detected waste information and prepares the optimal flush amount in advance for efficient waste discharge.
Data Source
AI summary
A flush toilet comprises a bowl including a waste receiving surface and a rim, a discharge trap conduit, a spouting portion provided in the bowl to spout the flush water, a flush water supply device configured to supply the flush water to the spouting portion, a waste information acquisition device configured to acquire an information regarding the waste excreted in the bowl, and a controller configured to determine a waste state by using the information regarding the waste and control the flush water supply device based on determination of the waste state. The controller controls the flush water supply device based on the determination of the waste state of the waste for each flush to the toilet so as to change a spout mode of the flush water spouted from the spouting portion