Optical Sensor Package for Cigarette Authentication and Type Identification
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Solution Overview
Problem
Aerosol generating devices face challenges in accurately distinguishing between genuine and counterfeit cigarettes, managing power consumption efficiently, and identifying various types of cigarettes due to sensor degradation and limited space for electronic components.
Innovation Solution
The device incorporates an optical sensor package with a semiconductor chip and light-emitting and light-receiving portions to detect an identification portion on the cigarette, which emits a different wavelength when excited, allowing for counterfeit detection and type identification, and includes a controller to process digital signals for accurate classification and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an aerosol generating device uses sensors to detect cigarette authenticity, then counterfeit detection capability is improved, but sensor accuracy degrades due to heater interference and various reasons
Solution Approach 1:
The sensor system is divided into multiple sensors with different detection functions. Some sensors detect authentication information while others monitor heater temperature and environmental conditions. This segmentation allows the system to compensate for individual sensor degradation by using multiple independent detection channels, thereby maintaining overall measurement precision despite heater interference.
Solution Approach 2:
The device implements feedback control by continuously monitoring sensor readings and adjusting heater operation accordingly. When sensor accuracy degrades or authentication is confirmed, the controller modulates heater power to maintain optimal detection conditions. This feedback mechanism compensates for sensor degradation over time and maintains reliable sensing values.
2Measurement precision
If an aerosol generating device includes multiple sensors for comprehensive detection, then identification capability is improved, but power consumption increases
Solution Approach 1:
Instead of continuously operating all sensors, the device employs periodic detection cycles where sensors are activated only when needed for authentication or type identification. The controller alternates between low-power standby mode and active detection mode, reducing overall power consumption while maintaining the ability to perform comprehensive cigarette analysis when required.
Solution Approach 2:
The sensor activation strategy is dynamically adjusted based on device state and detection needs. The controller activates specific sensors only when authentication is required or when cigarette insertion is detected, rather than maintaining all sensors in continuous operation. This dynamic sensor management reduces power consumption while preserving full identification capability when needed.
3Area of stationary object
If an aerosol generating device uses limited space for electronic components, then device compactness is improved, but sensor performance is limited
Solution Approach 1:
The optical sensor package is designed with a nested structure where the light-receiving portion is positioned on the opposite side of the light-emitting portion with respect to the semiconductor chip. This nested arrangement allows multiple functional components to occupy overlapping or adjacent spatial volumes, maximizing sensor performance within the constrained mounting space of the compact aerosol generating device.
Solution Approach 2:
The sensor package utilizes three-dimensional spatial arrangement rather than simple planar layout. By positioning components on opposite sides of the semiconductor chip and utilizing vertical stacking, the design achieves high detection precision without requiring excessive mounting area, effectively transitioning from two-dimensional to three-dimensional space utilization.
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
Enhances sensor sensitivity, effectively distinguishes between different cigarette types, and optimizes power consumption by utilizing limited space and components efficiently.
Implementation Method 1
an emission portion arranged on the package substrate and emitting light of a first wavelength
Implementation Method 2
a cigarette including an identification portion that emits light of a second wavelength when excited by light of a first wavelength, wherein the second wavelength is different from the first wavelength
Implementation Method 3
a light-receiving portion arranged on at least one of the semiconductor chip and the package substrate, which is located on the opposite side of the emission portion with respect to the semiconductor chip, and configured to receive light of the second wavelength
Data Source
AI summary
An aerosol generating system includes a cigarette including an identification portion that emits light of a second wavelength when excited by light of a first wavelength, wherein the second wavelength is different from the first wavelength, a main body including a cavity into which the cigarette is inserted, an optical sensor package near the cavity and configured to detect the identification portion, and a controller configured to identify whether the cigarette is counterfeit and a type of the cigarette based on a sensing value detected by the optical sensor package. The optical sensor package includes a package substrate, an emission portion on the package substrate and emitting light of the first wavelength, a semiconductor chip on the package substrate, and a light-receiving portion on at least one of the semiconductor chip and the package substrate, which is on the opposite side of the emission portion with respect to the semiconductor chip, and configured to receive light of the second wavelength.