Aerosol-generating system with resonant circuit for cartridge recognition
An aerosol-generating system is provided, including: a cartridge including an aerosol-forming substrate; a resonant circuit, the cartridge including at least part of the resonant circuit, the circuit being configured to resonate at a predetermined resonant frequency associated with an identity of the cartridge; and an aerosol-generating device including: a housing to removably receive the cartridge, a power source to supply power to the cartridge, and control circuitry including a controller configured to determine a resonant frequency of the resonant circuit when the cartridge is received by the device, and identify the cartridge based on the determined frequency, the cartridge having a connection end to connect the cartridge to the device and including electrical contacts to electrically connect the cartridge to the device, and the device having a connection end to connect the device to the cartridge and including electrical contacts configured to electrically connect the device to the cartridge.
1 . An aerosol-generating system, comprising:
a cartridge including an aerosol-forming substrate;
a resonant circuit, wherein the cartridge comprises at least a portion of the resonant circuit, wherein the resonant circuit is configured to resonate at a predetermined resonant frequency, and wherein the predetermined resonant frequency is associated with an identity of the cartridge; and
an aerosol-generating device including:
a housing configured to removably receive the cartridge,
a power source configured to supply power to the cartridge, and
control circuitry comprising a controller configured to:
determine a resonant frequency of the resonant circuit when the cartridge is received by the aerosol-generating device, and
identify the cartridge based on the determined resonant frequency,
wherein the cartridge has a connection end configured to connect the cartridge to the aerosol-generating device, the connection end of the cartridge comprising electrical contacts configured to electrically connect the cartridge to the aerosol-generating device, and
wherein the aerosol-generating device has a connection end configured to connect the aerosol-generating device to the cartridge, the connection end of the aerosol-generating device comprising electrical contacts configured to electrically connect the aerosol-generating device to the cartridge.
2 . The aerosol-generating system according to claim 1 ,
wherein the cartridge further includes an electric heater configured to heat the aerosol-forming substrate, and
wherein the resonant circuit comprises the electric heater.
3 . The aerosol-generating system according to claim 1 , wherein the resonant circuit comprises a capacitor and an inductor.
4 . The aerosol-generating system according to claim 3 , wherein the cartridge comprises the inductor.
5 . The aerosol-generating system according to claim 1 ,
wherein the resonant circuit comprises a capacitor and an inductor,
wherein the cartridge further includes an electric heater configured to heat the aerosol-forming substrate,
wherein the resonant circuit comprises the electric heater, and
wherein the electric heater comprises a coil and forms the inductor of the resonant circuit.
6 . The aerosol-generating system according to claim 4 , wherein the capacitor of the resonant circuit is connected in parallel with the inductor.
7 . The aerosol-generating system according to claim 3 , wherein the cartridge comprises the capacitor.
8 . The aerosol-generating system according to claim 1 , wherein the cartridge comprises the resonant circuit.
9 . The aerosol-generating system according to claim 3 , wherein the aerosol-generating device comprises the capacitor.
10 . The aerosol-generating system according to claim 1 , wherein the resonant circuit comprises a capacitor, and the predetermined resonant frequency of the resonant circuit is dependent on a capacitance of the capacitor and a parasitic inductance of the resonant circuit.
11 . The aerosol-generating system according to claim 1 , wherein the control circuitry is further configured to form an oscillator with the resonant circuit, the oscillator being configured to generate an oscillating signal with a frequency at the predetermined resonant frequency of the resonant circuit.
12 . The aerosol-generating system according to claim 11 , wherein the control circuitry is further configured to measure the frequency of the oscillating signal from the oscillator.
13 . A cartridge for an aerosol-generating system, the cartridge comprising:
an aerosol-forming substrate;
an electric heater;
a connection end configured to connect the cartridge to an aerosol-generating device, the connection end of the cartridge comprising electrical contacts configured to electrically connect the cartridge to the aerosol-generating device; and
a resonant circuit, wherein the resonant circuit is configured to resonate at a predetermined resonant frequency, and wherein the predetermined resonant frequency is associated with an identity of the cartridge.
14 . The cartridge according to claim 13 , wherein the resonant circuit comprises a capacitor and an inductor.
15 . The cartridge according to claim 14 , wherein the electric heater comprises a coil and forms the inductor of the resonant circuit.
16 . An aerosol-generating device for a cartridge including a resonant circuit, the aerosol-generating device including:
a housing configured to removably receive the cartridge;
a power source configured to supply power to the cartridge;
a connection end configured to connect the aerosol-generating device to a cartridge, the connection end of the aerosol-generating device comprising electrical contacts configured to electrically connect the aerosol-generating device to the cartridge; and
control circuitry comprising a controller configured to:
determine a resonant frequency of the resonant circuit when the cartridge is received by the aerosol-generating device, and
identify the cartridge based on the determined resonant frequency.
17 . The aerosol-generating device according to claim 16 , wherein the control circuitry is further configured to form an oscillator with the resonant circuit of the cartridge, the oscillator being configured to generate an oscillating signal with a frequency at the predetermined resonant frequency of the resonant circuit.