Aerosol Device Planar Coil and Capacitance Sensor for Noise Shielding
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Solution Overview
Problem
Existing aerosol-generating devices face challenges in implementing various sensing functions without the need for shielding materials and are prone to noise interference.
Innovation Solution
An aerosol-generating device equipped with a sensor that combines an inductive sensor with a planar sensing coil and a capacitance sensor, where the capacitance sensor is disposed parallel and adjacent to the inductive sensor to cover one side, effectively shielding the inductive sensor from external noise and allowing both sensors to perform distinct sensing functions simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a sensor is installed in the body to perform sensing functions, then various sensing functions are implemented, but noise interference occurs and shielding materials are required
Solution Approach 1:
The patent combines the inductive sensor and capacitance sensor into a single integrated sensor unit. The sensing coil and sensing electrode are disposed adjacent to each other, sharing the same installation space and structural support, thereby implementing multiple sensing functions (inductive sensing and capacitance sensing) through one unified sensor assembly rather than separate independent sensors
Solution Approach 2:
The capacitance sensor acts as an intermediary shielding element for the inductive sensor. The sensing electrode of the capacitance sensor is disposed adjacent to and parallel with the sensing coil, creating an electromagnetic shielding effect that blocks external noise from reaching the inductive sensor, thereby eliminating the need for additional shielding materials
2Object-affected harmful factors
If shielding materials are added to reduce noise, then noise interference is reduced, but device complexity and material requirements increase
Solution Approach 1:
The capacitance sensor serves a dual function: it performs capacitance sensing while simultaneously providing electromagnetic shielding for the inductive sensor. The sensing electrode inherently creates a shielding effect without requiring separate shielding materials, allowing the sensor system to shield itself from noise interference
Solution Approach 2:
The capacitance sensor is designed to perform multiple functions: primary capacitance sensing and secondary electromagnetic shielding. This multi-functional design eliminates the need for dedicated shielding materials, reducing device complexity while maintaining noise reduction capabilities
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 configuration enables the device to perform multiple sensing tasks while eliminating the need for additional shielding materials and reducing noise interference, enhancing the device's functionality and reliability.
Implementation Method 1
an inductive sensor comprising a planar sensing coil wound outwardly from a center of the sensing coil
Implementation Method 2
a capacitance sensor comprising a sensing electrode and disposed parallel and adjacent to the sensing coil to cover one side of the sensing coil
Data Source
AI summary
An aerosol-generating device is disclosed. An aerosol-generating device comprising: a body comprising an insertion space; a heater configured to heat the insertion space; and a sensor installed in the body, wherein the sensor comprises: an inductive sensor comprising a planar sensing coil wound outwardly from a center of the sensing coil; and a capacitance sensor comprising a sensing electrode and disposed parallel and adjacent to the sensing coil to cover one side of the sensing coil.