Inductive Susceptor Detection Circuit for Aerosol Devices
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Solution Overview
Problem
Existing aerosol generating devices lack an efficient method to determine the properties of a susceptor arrangement, which is crucial for ensuring proper operation and preventing unauthorized consumables, leading to potential safety and performance issues.
Innovation Solution
The apparatus and method utilize a circuit with an inductive element and a controller to determine changes in electrical parameters when the susceptor arrangement is coupled or decoupled, allowing for the identification of the susceptor's properties and enabling or disabling device activation based on these determinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no method is used to determine susceptor arrangement properties, then the device structure remains simple, but safety and performance are compromised due to inability to validate consumables
Solution Approach 1:
The patent replaces mechanical/physical detection methods with electrical parameter measurement. The controller measures electrical parameters (resistance, inductance, capacitance) of the susceptor arrangement to identify and validate consumables, eliminating the need for complex mechanical sensors or physical detection mechanisms while ensuring safety and performance.
Solution Approach 2:
The susceptor arrangement itself provides identification information through its inherent electrical properties. By measuring the electrical parameters of the susceptor, the system enables the consumable to self-identify and self-validate without requiring external tags, codes, or additional identification components, thus maintaining simplicity while improving reliability.
2Measurement precision
If electrical parameter measurement is implemented to validate consumables, then consumable validation is improved, but measurement precision requirements increase
Solution Approach 1:
The electrical parameter measurement system serves multiple functions: it measures resistance, inductance, and capacitance to identify consumable type, validates authenticity, and ensures proper compatibility. This multi-functional approach eliminates the need for separate detection systems for each validation purpose, reducing measurement difficulty while maintaining high precision.
Solution Approach 2:
The system measures changes in electrical parameters (resistance, inductance, capacitance) of the susceptor arrangement. By monitoring parameter variations rather than requiring absolute precise values, the system achieves reliable consumable validation while reducing the stringency of individual measurement precision requirements.
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 ensures that only approved consumables can activate the device, enhancing safety and performance by ensuring the susceptor arrangement is properly identified and validated before use, thereby preventing unauthorized or potentially hazardous materials from being heated.
Implementation Method 1
a circuit comprising an inductive element for heating a susceptor arrangement to heat an aerosol generating material
Implementation Method 2
an inductive element for heating a susceptor arrangement
Data Source
AI summary
Apparatus for an aerosol generating device comprises a circuit comprising an inductive element for heating a susceptor arrangement to heat an aerosol generating material. The apparatus also comprises a controller configured to determine a change in an electrical parameter of the circuit when the circuit is changed between an unloaded state wherein the susceptor arrangement is not inductively coupled to the inductive element, and a loaded state wherein the susceptor arrangement is inductively coupled to the inductive element. The controller is configured to determine a property of the susceptor arrangement from the change in the electrical parameter of the circuit.