Aerosol generation device and control method therefor

Abstract

An aerosol generation device includes: a chamber configured to removably receive an aerosol generation article including a magnetic material, a heater configurated to heat the aerosol generation article recieved in the chamber to generate an aerosol, a detection circuit including a capacitor connected in series with the heater, and a controller configured to control the detection circuit to have a direct current flowing therethrough the determine, based on a duration for which a potential difference between two ends of the capactior reaches a preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber. The device determines, based on the duration for which the potential differene between the two ends of the capactiro reaches the preset potentional difference theshold, whether the aerosol generation article is inserted into the chamber, and then controls an action of the heater.

1 . An aerosol generation device, comprising:
 a chamber, configured to removably receive an aerosol generation article comprising a magnetic material;   a heater, configured to heat the aerosol generation article received in the chamber to generate an aerosol;   a detection circuit, comprising a capacitor connected in series with the heater; and   a controller, configured to control the detection circuit to have a direct current flowing therethrough, and determine, based on a duration for which a potential difference between two ends of the capacitor reaches a preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         2 . The aerosol generation device according to  claim 1 , wherein the detection circuit further comprises resistors connected in series. 
     
     
         3 . The aerosol generation device according to  claim 1 , wherein the controller comprises a first port; one end of the detection circuit is electrically connected to the first port, and an other end is electrically connected to the ground; and
 the controller is configured to control the first port to output a high level, so that the detection circuit has the direct current flowing therethrough.   
     
     
         4 . The aerosol generation device according to  claim 3 , wherein the controller comprises a second port; one end of the capacitor is electrically connected to the second port and the heater, and an other end is electrically connected to the ground;
 the controller further comprises a countup timer; and   the controller is configured to: control the countup timer to start countup when controlling the first port to output the high level; obtain the potential difference between the two ends of the capacitor through the second port; obtain a countup time of the countup timer when the potential difference between the two ends of the capacitor reaches the preset potential difference threshold; and determine, based on the countup time of the countup timer, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         5 . The aerosol generation device according to  claim 3 , wherein the controller comprises an interrupt port; one end of the capacitor is electrically connected to the interrupt port and the heater, and an other end is electrically connected to the ground;
 the controller further comprises a countup timer; and   the controller is configured to: control the countup timer to start countup when controlling the first port to output the high level; generate an interrupt when the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, to obtain a countup time of the countup timer; and determine, based on the countup time of the countup timer, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         6 . The aerosol generation device according to  claim 1 , further comprising a switch transistor circuit, wherein
 the switch transistor circuit is configured to electrically connect the heater to a battery core or disconnect the heater from the battery core; and   the controller is configured to: output a first control signal to control the switch transistor circuit to be open; control the detection circuit to have the direct current flowing therethrough in a case that the switch transistor circuit is open; and determine, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber, and then control the switch transistor circuit.   
     
     
         7 . The aerosol generation device according to  claim 6 , wherein the controller is configured to: compare the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold with a preset time threshold; output a second control signal to control the switch transistor circuit to operate, and then start the heater for heating if the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold is greater than the preset time threshold; and control the switch transistor circuit to remain open if the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold is not greater than the preset time threshold. 
     
     
         8 . The aerosol generation device according to  claim 6 , wherein the controller is configured to: determine a difference between the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold and a preset time threshold; output a third control signal to control the switch transistor circuit to operate, and then start the heater for heating if the difference is not greater than the preset difference threshold and is greater than zero; and control the switch transistor circuit to remain open if the difference is greater than the preset difference threshold or less than or equal to zero. 
     
     
         9 . The aerosol generation device according to  claim 7 , wherein the controller is configured to: control the detection circuit to have the direct current flowing therethrough again in a case that the heater is in a heating gap; and determine, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber. 
     
     
         10 . The aerosol generation device according to  claim 1 , wherein the controller further comprises a countdown timer; and
 the controller is configured to: control the detection circuit to have the direct current flowing therethrough after a countdown time of the countdown timer is reached; and determine, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         11 . A control method for an aerosol generation device, wherein the aerosol generation device comprises a chamber, a heater, and a detection circuit, the detection circuit comprises a capacitor connected in series with the heater, and the method comprises:
 controlling the detection circuit to have a direct current flowing therethrough; and   determining, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         12 . The method according to  claim 11 , wherein the aerosol generation device further comprises a countup timer; and
 the method comprises:   controlling the countup timer to start countup when controlling the detection circuit to have the direct current flowing therethrough;   obtaining a countup time of the countup timer when the potential difference between the two ends of the capacitor reaches the preset potential difference threshold; and   determining, based on the countup time of the countup timer, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         13 . The method according to  claim 11 , wherein the aerosol generation device further comprises a switch transistor circuit, and the method comprises:
 outputting a first control signal to control the switch transistor circuit to be open;   controlling the detection circuit to have the direct current flowing therethrough in a case that the switch transistor circuit is open; and   determining, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber, and then controlling the switch transistor circuit.   
     
     
         14 . The method according to  claim 13 , wherein the determining, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber, and then controlling the switch transistor circuit comprises:
 comparing the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold with a preset time threshold;   outputting a second control signal to control the switch transistor circuit to operate, and then starting the heater for heating if the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold is greater than the preset time threshold; and   controlling the switch transistor circuit to remain open if the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold is not greater than the preset time threshold.   
     
     
         15 . The method according to  claim 13 , wherein the determining, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber comprises:
 determining a difference between the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold and a preset time threshold;   outputting a third control signal to control the switch transistor circuit to operate, and then starting the heater for heating if the difference is not greater than the preset difference threshold and is greater than zero; and   controlling the switch transistor circuit to remain open if the difference is greater than the preset difference threshold.   
     
     
         16 . The method according to  claim 11 , wherein the aerosol generation device further comprises a countdown timer; and
 the method comprises:   controlling the detection circuit to have the direct current flowing therethrough after a countdown time of the countdown timer is reached; and   determining, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.   
     
     
         17 . The aerosol generation device according to  claim 8 , wherein the controller is configured to: control the detection circuit to have the direct current flowing therethrough again in a case that the heater is in a heating gap; and determine, based on the duration for which the potential difference between the two ends of the capacitor reaches the preset potential difference threshold, that the aerosol generation article is received in the chamber or the aerosol generation article is removed from the chamber.