Electronic apparatus and controlling method thereof
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Solution Overview
Problem
Conventional optical sensors using monochromatic light struggle to detect object colors and provide limited information, while cameras using red, green, and blue light also face limitations in acquiring comprehensive object data.
Innovation Solution
An electronic apparatus employing a light-emitting diode array to transmit light beams with different wavelengths, a photodiode array to receive these beams, and a processor to identify object states based on intensity variations, enabling the display of object information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If monochromatic light is used in optical sensors, then the device complexity is reduced, but the measurement precision and information acquisition capability deteriorate
Solution Approach 1:
The optical sensor is segmented into multiple photodiodes, each sensitive to different wavelength ranges. The light source is segmented into multiple LEDs emitting different wavelengths. This segmentation allows simultaneous measurement of reflected light intensities across multiple wavelengths, enabling color detection and improved object state identification without requiring a single complex sensor.
Solution Approach 2:
The system transitions from single-wavelength (one-dimensional) measurement to multi-wavelength (multi-dimensional) measurement by introducing wavelength as an additional measurement dimension. This allows the sensor to detect not only light intensity but also spectral characteristics, thereby identifying object color and state with improved precision.
2Loss of information
If cameras using red, green, and blue light are used, then the information acquisition capability is improved, but the device complexity and cost increase
Solution Approach 1:
The optical sensor system is designed to perform multiple functions: detecting object color through multi-wavelength measurement, identifying object state (such as food freshness or cooking status), and potentially measuring distance. By making the system universal, it replaces multiple specialized devices (color camera, freshness sensor, distance sensor) with a single integrated solution, thereby reducing overall system complexity.
Solution Approach 2:
The system changes the measurement parameter from simple light intensity to spectral intensity distribution across multiple wavelengths. By measuring how different wavelengths are reflected or absorbed, the system can identify material properties, color, and state changes without requiring complex imaging equipment.
3Measurement precision
If multiple wavelengths of light are transmitted toward an object, then the measurement precision and object state identification capability are improved, but the use of energy increases
Solution Approach 1:
The multiple LEDs emitting different wavelengths are activated periodically or sequentially rather than continuously simultaneously. This allows the system to measure reflected light intensities at different wavelengths over time, achieving spectral analysis with reduced total energy consumption compared to continuous multi-wavelength illumination.
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 allows for accurate identification of object states, including food freshness and cooking status, by utilizing the intensity and reflectance changes of light beams across various wavelengths, providing more comprehensive information than traditional methods.
Implementation Method 1
a light-emitting diode array capable of transmitting light beams having different wavelengths
Implementation Method 2
a photodiode array capable of receiving the light beams
Implementation Method 3
receive the light beams having the different wavelengths reflected on the object
Data Source
AI summary
Disclosed herein is an electronic apparatus and method capable of identifying a state of an object. The electronic apparatus includes a light-emitting diode array configured to transmit light beams having different wavelengths, a photodiode array configured to receive the light beams, a display, and a processor configured to control the light-emitting diode array to transmit the light beams having the different wavelengths toward an object, identify a state of the object based on intensities reflected on the object according to the light beams having the different wavelengths that are received by the photodiode array, and display information about the state of the object on the display.