Smoking Set Control Circuit With Adaptive Switching Frequency
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Solution Overview
Problem
Existing smoking sets with voltage regulating circuits composed of discrete devices suffer from high loss and low power supply utilization due to constant working frequency, leading to inefficient power management.
Innovation Solution
A smoking set control circuit that includes a power circuit, first and second sampling circuits, and a microcontroller to sample electrical parameters at different switching frequencies, determining the most efficient frequency for the voltage regulating circuit to operate at, thereby optimizing power tube operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the voltage regulating circuit uses discrete devices with constant working frequency, then the circuit structure is simple, but the loss is great and power supply utilization is low
Solution Approach 1:
The patent applies dynamics by transforming the constant frequency operation into variable frequency operation. The microcontroller dynamically adjusts the switching frequency of the power tubes based on real-time efficiency detection, allowing the voltage regulating circuit to operate at optimal frequencies for different power levels, thereby reducing energy loss while maintaining manageable circuit complexity through integrated control.
Solution Approach 2:
The patent changes the operating parameter (switching frequency) of the power tubes from a fixed constant value to a variable parameter that can be adjusted across a range of frequencies. By detecting efficiency at different frequencies and selecting the optimal one, the system achieves lower energy loss without significantly increasing circuit complexity, as the change is implemented through software control rather than hardware reconfiguration.
2Ease of manufacture
If the voltage regulating circuit uses discrete devices with constant working frequency, then the circuit design is straightforward, but the power supply utilization rate is low
Solution Approach 1:
The patent implements feedback by detecting the efficiency of the voltage regulating circuit at different switching frequencies and using this information to select the optimal frequency for operation. The sampling circuits measure electrical parameters, the microcontroller calculates efficiency at various frequencies, and then controls the power tubes to operate at the frequency that maximizes power supply utilization, creating a closed-loop optimization system that improves energy usage while keeping the design relatively straightforward.
Solution Approach 2:
The patent applies preliminary action by pre-testing and determining the optimal switching frequency for different power conditions before actual operation. The system performs efficiency detection at multiple preset frequencies in advance, stores this information, and then uses it to quickly select the best operating frequency, thereby maximizing power supply utilization without requiring complex real-time calculations during normal operation.
Data Source
AI summary
A smoking set control circuit for a smoking set includes: a power circuit first and second sampling circuits; a voltage regulating circuit having power tubes; a microcontroller configured to: control the power tubes to work at a plurality of different preset switching frequencies; acquire first electrical parameters and second electrical parameters at different preset switching frequencies, and accordingly determine corresponding efficiencies of the voltage regulating circuit at different preset switching frequencies; control the power tube to take the preset switching frequency corresponding to the highest efficiency among the corresponding efficiencies as the working frequency. A loss of the voltage regulating circuit is reduced and a utilization rate of power supply is improved by acquiring the electrical parameters at different preset switching frequencies, determining corresponding efficiencies of the voltage regulating circuit, and controlling the power tube to take the preset switching frequency corresponding to the highest efficiency as the working frequency.