Rotational 3D Measuring Device for Heating Cooker Food Shape Detection
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Solution Overview
Problem
Current 3D shape measurement technologies for large objects, such as food items in heating cookers, face challenges including limited measurement range, accuracy issues due to distortion, and the need for extensive equipment size, which complicates integration into compact heating appliances and increases costs.
Innovation Solution
A compact 3D measuring device with a rotational supporting shaft, a beam irradiator, and a capturer on the same axis, allowing stable positional relationships and accurate measurements, using a semiconductor laser for heat resistance and adjustable beam wavelength, enabling precise 3D shape capture and cooking control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the beam scanning area is expanded to measure large objects, then the measurement range is improved, but the equipment size increases
Solution Approach 1:
The patent applies dynamics by making the light source fluctuate (move dynamically) while facing the object, rather than requiring the entire equipment to be large and stationary. This allows a compact device to achieve wide measurement coverage through controlled motion of the beam irradiation position.
2Measurement precision
If the light source and camera are placed far apart to secure measurement accuracy, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent uses dynamic fluctuation of the light source position to achieve accurate measurements without requiring fixed distant placement of components. The controlled motion enables precision measurement with compact component arrangement.
Solution Approach 2:
The supporting shaft serves multiple functions: it supports both the light source and camera, provides rotation capability for beam fluctuation, and maintains precise positional relationships between components. This multi-functionality reduces the need for separate complex positioning mechanisms.
3Device complexity
If a compact measuring device is used for heating cookers, then the device complexity is reduced, but the measurement range is limited
Solution Approach 1:
The compact device achieves extended measurement range through dynamic fluctuation of the beam irradiation position via light source rotation, allowing a small device to measure large food items effectively.
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
Enables accurate 3D measurement of large objects with reduced equipment size and cost, allowing for advanced cooking automation by considering food shape and size, improving cooking quality and reducing the complexity and expense of the heating cooker design.
Implementation Method 1
Based on the principle of triangulation, the depth of the object is calculated from image data of the irradiated beam
Implementation Method 2
using a semiconductor laser for heat resistance and adjustable beam wavelength
Data Source
AI summary
A three dimensional (3D) measuring device. The 3D measuring device includes a rotational supporting shaft, a supporting frame configured to support the supporting shaft, a beam irradiator arranged at the supporting shaft for irradiating beam of light onto an object, a capturer arranged at the supporting shaft to be at a distance from the beam irradiator and configured to capture the beam projected on the object, and at least one processor configured to control rotation of the supporting shaft and obtain a 3D shape of the object based on image information obtained by the capturer as the supporting shaft is rotated.