Detection of aerosol-forming substrate in an aerosol generating device
First Claim
1. An aerosol generating device, comprising:
- a heater element configured to heat an aerosol-forming substrate, the aerosol-forming substrate being movable inside the aerosol generating device to come into thermal proximity with the heater element;
a power source connected to the heater element; and
a controller connected to the heater element and to the power source, and comprising circuitry configured to;
control power supplied to the heater element from the power source to maintain a temperature of the heater element at a target temperature,compare a measure of the power supplied to the heater element or energy supplied to the heater element from the power source to a threshold measure of power or energy, anddetect a presence of the aerosol-forming substrate close to the heater element or a material property of the aerosol-forming substrate close to the heater element, and detect an absence of the aerosol-forming substrate from the aerosol generating device, based on the compared measure of the power or the energy supplied to the heater element.
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Accused Products
Abstract
There is provided an aerosol generating device, including a heater element configured to heat an aerosol-forming substrate; a power source connected to the heater element; and a controller connected to the heater element and to the power source, wherein the controller is configured to control the power supplied to the heater element from the power source to maintain the temperature of the heater element at a target temperature, and is configured to compare a measure of power supplied to the heater element or energy supplied to the heater element from the power source to a threshold measure of power or energy to detect the presence of an aerosol-forming substrate close to the heater element or a material property of an aerosol-forming substrate close to the heater element.
70 Citations
13 Claims
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1. An aerosol generating device, comprising:
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a heater element configured to heat an aerosol-forming substrate, the aerosol-forming substrate being movable inside the aerosol generating device to come into thermal proximity with the heater element; a power source connected to the heater element; and a controller connected to the heater element and to the power source, and comprising circuitry configured to; control power supplied to the heater element from the power source to maintain a temperature of the heater element at a target temperature, compare a measure of the power supplied to the heater element or energy supplied to the heater element from the power source to a threshold measure of power or energy, and detect a presence of the aerosol-forming substrate close to the heater element or a material property of the aerosol-forming substrate close to the heater element, and detect an absence of the aerosol-forming substrate from the aerosol generating device, based on the compared measure of the power or the energy supplied to the heater element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting a presence of an aerosol-forming substrate close to a heater element or a material property of the aerosol-forming substrate in an aerosol generating device, the aerosol generating device comprising the heater element configured to heat the aerosol-forming substrate, wherein the aerosol-forming substrate is movable inside the aerosol generating device to come into thermal proximity with the heater element, and a power source connected to the heater element, the method comprising:
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controlling power supplied to the heater element from the power source to maintain a temperature of the heater element at a target temperature; comparing a measure of the power supplied to the heater element or energy supplied to the heater element from the power source to a threshold measure of power or energy; and determining a presence of the aerosol-forming substrate close to the heater element or a material property of the aerosol-forming substrate close to the heater element based on a result of the step of comparing, and detecting an absence of the aerosol-forming substrate from the aerosol generating device, based on the compared measure of the power or the energy supplied to the heater element. - View Dependent Claims (10, 11, 12, 13)
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Specification