Ultrasonic Aerosol Device for Article-Type Detection and Heater Control
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Solution Overview
Problem
Aerosol-generating devices face challenges in obtaining comprehensive information about the type and amount of aerosol-generating articles without using multiple sensors, which complicates the control of heater operations.
Innovation Solution
An aerosol-generating device employs a transducer to output ultrasonic waves, receive reflections, and generate electric signals to determine the type of the aerosol-generating article, allowing the processor to control the heater based on this information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are included to obtain comprehensive information on the aerosol-generating article, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The transducer is designed to perform multiple functions: it detects both the type and the amount of aerosol-generating materials in the aerosol-generating article using a single device. This multi-functional approach eliminates the need for separate sensors for different measurement tasks, thereby reducing device complexity while maintaining comprehensive information accuracy.
Solution Approach 2:
The patent combines multiple sensing capabilities into a single transducer unit. Instead of using separate sensors for detecting article type and material quantity, the invention merges these functions into one integrated transducer that outputs a single signal containing both types of information, thus simplifying the overall sensor system.
2Device complexity
If a single transducer is used to obtain comprehensive information, then device complexity is reduced, but measurement precision may be compromised
Solution Approach 1:
The transducer operates by detecting changes in physical parameters (such as acoustic impedance or resonance frequency) that occur when ultrasonic waves interact with the aerosol-generating article. By monitoring these parameter changes, the transducer can distinguish between different article types and quantify material amounts, achieving high measurement precision with a single device.
Solution Approach 2:
The patent uses ultrasonic waves as an intermediary medium to transfer information from the aerosol-generating article to the transducer. The ultrasonic waves interact with the article's physical and chemical properties, and the transducer detects these interactions to extract both type and quantity information, thereby maintaining measurement precision without requiring multiple direct-contact sensors.
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 effectively controls the heater operation based on the type and state of the aerosol-generating article, ensuring high-quality aerosol delivery.
Implementation Method 1
a transducer configured to output ultrasonic waves toward the accommodation space, receive ultrasonic waves reflected from the accommodation space, and generate electric signals corresponding to the received ultrasonic waves
Data Source
AI summary
An aerosol-generating device may include an accommodation space where an aerosol-generating article is accommodated, a heater configured to generate aerosol by heating the aerosol-generating article, a transducer configured to output ultrasonic waves toward the accommodation space, receive ultrasonic waves reflected from the accommodation space, and generate electric signals corresponding to the received ultrasonic waves, and a processor configured to determine a type of the aerosol-generating article accommodated in the accommodation space based on the electric signals generated by the transducer, and control an operation of the heater based on the determined type of the aerosol-generating article.