Aerosol Power Supply PCB Layout for Accurate Thermistor Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing power supply units for aerosol generating devices face challenges in accurately disposing connectors for thermistors across multiple circuit boards, which affects the detection accuracy and durability of the device.
Innovation Solution
A power supply unit design that includes a configuration where the heater connector is placed on a separate circuit board from the thermistor connectors, with a larger number of thermistor connectors on the first circuit board compared to the second circuit board, optimizing the placement to reduce wiring entanglement and noise interference, thereby enhancing detection accuracy and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple circuit boards are provided in the device to increase functionality, then the functionality of the aerosol generating device is improved, but the complexity of disposing connectors for thermistors increases and detection accuracy deteriorates
Solution Approach 1:
The patent divides the circuit board system into multiple separate circuit boards, with each board having a dedicated connector for thermistors. This segmentation allows each circuit board to be optimized independently for its specific detection function, maintaining high detection accuracy while supporting multiple functionality through modular architecture.
Solution Approach 2:
Each circuit board is equipped with locally optimized connector dispositions tailored to its specific detection requirements. The first circuit board has a first connector disposed at a position optimized for first thermistor detection, while the second circuit board has a second connector disposed at a different position optimized for second thermistor detection, ensuring high detection accuracy for each function.
2Measurement precision
If thermistors are connected to circuit boards via wiring and connectors to improve detection accuracy, then detection accuracy is improved, but the wiring becomes more prone to stress and entanglement
Solution Approach 1:
The patent segments the wiring paths by providing separate connectors on different circuit boards. This reduces wiring entanglement and stress by creating distinct, organized connection points for different thermistor circuits, thereby improving wiring durability while maintaining detection accuracy.
Solution Approach 2:
The patent utilizes spatial separation by disposing connectors at different positions on different circuit boards, effectively using the third dimension (spatial arrangement) to reduce wiring complexity and stress, thereby improving both reliability and detection accuracy.
3Device complexity
If connectors for thermistors are disposed on the same circuit board as the heater connector, then device complexity is reduced, but noise interference increases and detection accuracy deteriorates
Solution Approach 1:
The patent segments the connector arrangements by providing dedicated connectors for thermistors on separate circuit boards from the heater connector. This spatial and functional segmentation reduces noise interference between heating and detection circuits, maintaining detection accuracy while managing complexity through modular design.
Solution Approach 2:
The patent extracts the thermistor connectors from the same circuit board as the heater connector, placing them on separate circuit boards. This extraction isolates the sensitive detection circuits from the high-power heating circuits, reducing noise interference and improving detection accuracy.
4Ease of manufacture
If the number of thermistor connectors on each circuit board is equalized, then manufacturing simplicity is improved, but detection accuracy and wiring organization deteriorate
Solution Approach 1:
The patent applies local quality by configuring the number of thermistor connectors on each circuit board according to its specific detection requirements. The first circuit board has a first number of thermistor connectors optimized for its detection functions, while the second circuit board has a second number of thermistor connectors optimized for its detection functions, ensuring high detection accuracy while maintaining manufacturing feasibility.
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 improves the accuracy of temperature detection and reduces stress on the wiring, leading to enhanced durability and efficient aerosol generation by minimizing stray capacity and resistance in the power supply unit.
Implementation Method 1
a heater connector Cn connected to a heater HTR configured to heat an aerosol source by consuming power supplied from the power supply
Implementation Method 2
thermistors, thermistor connectors connected to the thermistors
Data Source
AI summary
A power supply unit for an aerosol generating device, includes a power supply, a heater connector connected to a heater configured to heat an aerosol source by consuming power supplied from the power supply, thermistors, thermistor connectors connected to the thermistors, a first circuit board, and a second circuit board separate from the first circuit board. The heater connector is disposed on the second circuit board of the first circuit board and the second circuit board. The number of the thermistor connectors disposed on the first circuit board is larger than the number of the thermistor connectors disposed on the second circuit board.