Toaster Optical Surface Detection for Accurate Browning Control
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Solution Overview
Problem
Existing heating cooking apparatuses struggle to accurately determine the surface condition of foodstuffs, leading to issues like insufficient heating or burning, as they rely on standard settings that may not account for variations in food size, moisture, temperature, and user preferences, making it difficult to achieve the desired doneness.
Innovation Solution
A determination device equipped with a light receiving unit to capture reflected light from the foodstuff and a surface condition determination unit that analyzes the intensity of this light to assess the surface condition, allowing for precise control of the heating process based on the browning progress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standard cooking settings are used, then the device is simple to operate, but the surface condition of the foodstuff cannot be accurately determined leading to insufficient heating or burning
Solution Approach 1:
The patent implements a feedback mechanism where a light receiving unit continuously monitors the reflected light from the foodstuff surface during cooking, and the control unit adjusts heating based on the detected surface condition (browning degree). This closed-loop feedback system maintains ease of operation while achieving accurate surface condition determination and appropriate heating control.
Solution Approach 2:
The patent replaces manual visual inspection and mechanical timing methods with an optical detection system. The light receiving unit uses photodetection to measure surface browning, substituting human sensory judgment with precise optical measurement, thereby improving surface condition determination accuracy without complicating user operation.
2Measurement precision
If manual monitoring and adjustment is performed, then surface condition can be visually judged, but it takes time and effort and the difference may change significantly in a short time
Solution Approach 1:
The system performs self-monitoring and self-adjustment of the cooking process. The light receiving unit autonomously tracks surface browning, and the control unit automatically modifies heating parameters without requiring user intervention. This eliminates the time and effort previously needed for manual monitoring while maintaining continuous accurate surface condition assessment.
Solution Approach 2:
The patent establishes continuous monitoring of surface condition throughout the cooking process, rather than periodic or manual checks. The light receiving unit continuously measures reflected light intensity, enabling real-time detection of browning changes and continuous adjustment of heating, ensuring no significant changes are missed and optimizing cooking time.
3Reliability
If additional heating process is performed to correct insufficient heating, then the intended result can be reached, but it takes additional time and effort
Solution Approach 1:
The feedback control system continuously monitors surface browning and dynamically adjusts heating power to maintain the desired surface condition. By detecting browning degree in real-time and adjusting heating accordingly, the system prevents both insufficient heating and overheating, achieving reliable results without requiring corrective additional heating cycles that would extend total cooking time.
4Reliability
If excess heating is performed, then the foodstuff is burned and has to be given up
Solution Approach 1:
The light receiving unit continuously monitors surface browning and provides feedback to the control unit, which adjusts or stops heating when the desired surface condition is achieved. This prevents excess heating and burning by maintaining real-time control based on actual surface state, thereby eliminating the harmful effect of burning while ensuring reliable cooking results.
Solution Approach 2:
The system takes preliminary action to prevent burning by continuously monitoring surface condition and proactively adjusting heating before burning can occur. The feedback control anticipates potential overheating by detecting early signs of excessive browning and reduces or stops heating in advance, preventing the harmful effect rather than correcting it after damage occurs.
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 solution enables accurate determination of the surface condition, preventing under or overcooking by adjusting the heating process in real-time, ensuring the food is cooked to the user's preference.
Implementation Method 1
a light receiving unit configured to receive reflected light from a foodstuff being cooked
Data Source
AI summary
A toaster according to the disclosure includes a light receiving unit configured to receive reflected light from bread being cooked and a surface condition determination unit configured to determine a surface condition of the bread being cooked on the basis of intensity of the reflected light received by the light receiving unit.