Capacitance-Based Heater Control for Aerosol Substrate Moisture

The patent replaces mechanical/wet chemical water content measurement methods with electrical capacitance sensing. The capacitance sensor detects changes in dielectric constant caused by water content variations, enabling adaptive heating control without complex mechanical structures. This electrical field-based detection method achieves high adaptability while maintaining relatively simple device architecture.

The patent implements a feedback control system where the capacitance sensor continuously monitors water content, and the controller adjusts the heater power accordingly. When water content is high (high capacitance), the heater power is reduced to prevent overheating; when water content is low (low capacitance), the heater power is increased to maintain proper aerosol generation. This closed-loop feedback mechanism enables adaptability to varying substrate conditions.

The feedback control system uses capacitance measurements to dynamically adjust heater power. When the capacitance sensor detects low water content (low capacitance reading), the controller reduces heater power to prevent overheating. Conversely, when water content is high (high capacitance), the controller increases or maintains heater power to ensure proper aerosol generation. This adaptive feedback mechanism maintains reliable aerosol generation while preventing temperature extremes.

The patent changes the heating parameter (power level) based on the detected water content parameter. The controller adjusts the heater power level dynamically according to capacitance readings, transforming a static heating process into a variable one that adapts to substrate conditions. This parameter adjustment ensures consistent aerosol generation across varying water content conditions without causing overheating.

The feedback control system prevents insufficient heating by detecting low water content conditions through capacitance sensing. When the capacitance sensor reads low values indicating dry substrate, the controller maintains or increases heater power to ensure adequate heating and aerosol generation. The system only reduces power when capacitance indicates high water content, thus avoiding both overheating and insufficient heating scenarios.

The patent dynamically adjusts the heater power parameter based on real-time capacitance measurements of substrate water content. This variable power delivery ensures that heating is sufficient when needed (low water content) while preventing overheating when water content is high. The continuous parameter adjustment optimizes both temperature control and aerosol generation efficiency across different operating conditions.