Breast Pump Controller Milk Flow Mode Switching
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Solution Overview
Problem
Breast pumps typically consume excessive electrical power due to the high vacuum levels required in the expression mode, and existing technologies lack efficient methods to automatically switch between stimulation and expression modes based on milk flow detection, leading to inefficient power usage.
Innovation Solution
A controller for a breast pump that monitors milk flow during a session and switches between a low energy mode and an expression mode based on detected milk flow, using different pressure profiles to minimize power consumption by maintaining a low energy mode during periods of low or no milk flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the breast pump operates in expression mode with high vacuum levels to ensure effective milk extraction, then milk extraction efficiency is improved, but electrical power consumption increases
Solution Approach 1:
The system dynamically switches between expression mode and low energy mode based on real-time milk flow detection. When milk flow is detected, the system operates in expression mode with high vacuum levels to ensure effective milk extraction. When no milk flow is detected, the system transitions to low energy mode with reduced vacuum levels, thereby adapting the operating conditions to actual needs and reducing unnecessary power consumption.
Solution Approach 2:
The system uses a sensor to detect milk flow and provides feedback to the controller. Based on this feedback, the controller automatically switches between expression mode and low energy mode. This closed-loop control ensures that high power consumption is only incurred when actually needed for milk extraction, while reducing power consumption during periods of no milk flow.
2Quantity of substance
If the breast pump continuously operates in expression mode to maximize milk collection, then milk collection quantity is improved, but battery life decreases
Solution Approach 1:
The system employs periodic action by alternating between expression mode and low energy mode based on milk flow detection. Instead of continuous high-power operation, the system uses short bursts of high vacuum when milk flows are detected, followed by low energy mode when flows cease. This periodic operation pattern maintains effective milk collection while significantly reducing overall power consumption and extending battery life.
3Use of energy by moving object
If the breast pump uses automatic mode switching based on milk flow detection, then power efficiency is improved, but device complexity increases
Solution Approach 1:
The system implements self-service by using automatic mode switching based on milk flow detection. The controller automatically determines when to switch between expression mode and low energy mode based on sensor feedback, eliminating the need for manual user intervention. This automation improves power efficiency while the self-regulating nature of the system keeps the control logic relatively simple.
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 approach reduces electrical power consumption by limiting the duration of the high-power expression mode and extends battery life in battery-operated breast pumps without compromising milk extraction efficiency.
Implementation Method 1
a vacuum is applied such that milk is extracted
Implementation Method 2
the pressure source is controlled in dependence on the flow, thereby to switch between a low energy mode with a first pressure profile of the pressure source to an expression mode with a different second pressure profile
Data Source
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AI summary
A breast pump device is provided and a controller for operating a pressure source of the breast pump device. A milk flow is monitored during a breast pumping session. The pressure source is controlled in dependence on the flow, thereby to switch, during the breast pumping, between a first pressure profile of the pressure source for a low energy mode and a second pressure profile of the pressure source for an expression mode. The breast pumping session comprises a plurality of time periods with the low energy mode and a plurality of time periods with the expression mode, in order to reduce electrical power consumption.