Hair Spray Control Using Angular Velocity Feedback
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Solution Overview
Problem
Existing hair care devices struggle to accurately spray cosmetic components from the root to the tip of the hair due to deviations caused by centrifugal force when the device is swung in a short cycle, leading to inconsistencies in the amount and range of spraying.
Innovation Solution
A hair care device that controls the output of the pump based on the detected angular velocity, adjusting the spray pattern by reducing the output as the angular velocity increases, and increasing air flow when necessary to ensure consistent application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device is swung in a short cycle during use, then the user can cover the entire hair length from root to tip, but centrifugal force causes deviation in the amount and range of cosmetic component spraying
Solution Approach 1:
The controller receives angular velocity information from the detector and uses this feedback to dynamically adjust the pump output. When the device is swung (high angular velocity), the controller reduces pump output to compensate for centrifugal force effects, maintaining consistent spray application throughout the hair length.
Solution Approach 2:
The system changes the pump output parameter based on the detected angular velocity. By dynamically adjusting the pump output according to the device's motion state, the system maintains optimal spray consistency whether the device is held stationary or swung through the hair.
2Device complexity
If the pump output is maintained at a constant level, then the device structure is simple, but the spray consistency varies when the device is swung
Solution Approach 1:
The controller continuously monitors angular velocity from the detector and adjusts pump output in real-time based on this feedback. This feedback mechanism enables the system to maintain spray consistency during swinging motions without requiring complex mechanical adjustments to the pump or spray mechanism.
Solution Approach 2:
The patent replaces potential mechanical complexity (such as variable pump mechanisms or flow control valves) with an electronic control system. The controller uses angular velocity detection and electronic pump control to achieve spray consistency, avoiding the need for complex mechanical adjustments while maintaining precision.
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 device ensures a suitable and consistent spraying of cosmetic components by adjusting the pump and air flow according to the detected angular velocity, improving usability and accuracy.
Implementation Method 1
a detector that detects an angular velocity of the hair care device
Implementation Method 2
a pump that sends out the cosmetic component
Implementation Method 3
because a centrifugal force acts on the cosmetic component
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A hair care device according to the present disclosure includes a tank that stores a liquid, a pump that outputs the liquid stored in the tank, and a controller that controls an output of the pump. The hair care device according to the present disclosure further includes a detector that detects swing of the hair care device. The controller adjusts the output of the pump based on a detection value of the detector. Thus, the hair care device that suitably sprays a cosmetic component is provided.