Calibrated dose control
Methods and vaporizer apparatuses that estimate, measure and/or predict the amount of vapor and/or material (including active ingredients) released by the vaporizer apparatus. In particular, described herein are electronic vaporizers and methods of using them that determine a dose/amount of vapor and/or a material in the vapor based primarily or exclusively on the electrical and thermal properties, e.g., power or energy applied to the vaporizing element (e.g., heating coil) and the temperature of the material immediately before and as it is vaporized. Dose information may be used to control operation of the device and/or reported to the user.
1. A vaporizer device comprising:
a heater configured to vaporize a vaporizable material; and
one or more controllers configured to perform operations comprising:
determining an amount of power applied to the heater,
determining a first temperature of the heater at a first time, the first time being at or after a start of a first dose interval,
determining a second temperature of the heater at a second time, the second time subsequent to the first time, and
calculating, based on the amount of power applied to the heater, the first temperature, and the second temperature, an estimated amount of the vaporizable material delivered to a user during the first dose interval corresponding to a first puff,
determining whether the estimated amount of the vaporizable material meets or exceeds a first preset threshold, wherein the first preset threshold corresponding to a preset vapor amount threshold per puff,
adjusting the first preset threshold for a second dose interval corresponding to a second puff based on the estimated amount of the vaporizable material, and
calibrating the vaporizer device based on the estimated amount and the adjusted first preset threshold.
2. The vaporizer device of claim 1 , the operations further comprising providing information corresponding to the estimated amount of the vaporizable material delivered to the user.
3. The vaporizer device of claim 1 , further comprising the user interface configured to provide a user with information related to the vaporizer device.
4. The vaporizer device of claim 3 , wherein the information comprises an amount of vapor inhaled by the user.
5. The vaporizer device of claim 1 , wherein the operations further comprise:
disabling the vaporizer device when the estimated amount of the vaporizable material delivered, meets or exceeds a preset threshold.
6. The vaporizer device of claim 1 , wherein the operations further comprise:
alerting the user when the estimated amount of the vaporizable material delivered meets or exceeds a preset threshold.
7. The vaporizer device of claim 1 , wherein the first temperature of the heater is determined based on a change of resistance of the heater.
8. The vaporizer device of claim 1 , wherein the first temperature of the heater is determined based on a temperature coefficient of resistance.
9. The vaporizer device of claim 1 , wherein the second temperature of the heater is determined based on a temperature coefficient of resistance.
10. The vaporizer device of claim 1 , further comprising a device body and a cartridge configured to be removably coupled to the device body, the cartridge configured to store the vaporizable material.
11. The vaporizer device of claim 1 , wherein the heater is disposed within a cartridge.
12. A method comprising:
determining an amount of power applied to a heater of a vaporizer device configured to vaporize a vaporizable material;
determining a first temperature of the heater at a first time, the first time being at or after a start of a first dose interval;
determining a second temperature of the heater at a second time, the second time subsequent to the first time;
calculating, based on the amount of power applied to the heater, the first temperature, and the second temperature, an estimated amount of the vaporizable material delivered to a user during the first does interval corresponding to a first puff,
determining whether the estimated amount of the vaporizable material meets or exceeds a first preset threshold, wherein the first preset threshold corresponding to a preset vapor amount threshold per puff,
adjusting the first preset threshold for a second dose interval corresponding to a second puff based on the estimated amount of the vaporizable material, and
calibrating the vaporizer device based on the estimated amount and the adjusted first preset threshold.
13. The method of claim 12 , further comprising providing information corresponding to the estimated amount of the vaporizable material delivered to the user.
14. The method of claim 12 , further comprising providing the user with information related to the vaporizer device.
15. The method of claim 12 , further comprising disabling the vaporizer device when the estimated amount of the vaporizable material delivered, meets or exceeds a preset threshold.
16. The method of claim 12 , further comprising alerting the user when the estimated amount of the vaporizable material delivered meets or exceeds a preset threshold.
17. The method of claim 12 , wherein at least one of determining the first temperature of the heater or determining the second temperature of the heater is based on a change of resistance of the heater.
18. The method of claim 12 , wherein at least one of determining the first temperature of the heater or determining the second temperature of the heater is based on a temperature coefficient of resistance.