Heat-not-burn smoking device, electromagnetic induction heating control method and control device

A heat-not-burn smoking device, comprising a power supply, a driving circuit, a resonant network, and a control module, the power supply outputting a direct current, the control module controlling a duty cycle of the excitation source of the driving circuit, the driving circuit converting the direct current into an alternating current power signal based on the excitation source, the resonant network generating high-frequency electromagnetic waves based on the alternating current power signal, and the metal induction element heating up by sensing the high-frequency electromagnetic waves to heat a cigarette;

• wherein the control module comprises an acquisition circuit and a control unit, the acquisition circuit is configured to acquire a working current of the resonant network, and the control unit is configured to supply the driving circuit with an excitation source with an initial frequency at a first duty cycle to initiate operation of the resonant network, the first duty cycle is less than 50%, the input frequency of the excitation source is adjusted within a preset frequency range to find a maximum working current, and the input frequency at the maximum working current is set as an optimal input frequency, and the input frequency of the excitation source is adjusted to the optimal input frequency.