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1.发明申请公开(公告)号：US20150237916A1
公开(公告)日：2015-08-27
申请号：US14427093
申请日：2013-09-10
Applicant: Philip Morris Products S.A.
Inventor： Robin Farine , Pascal Talon
CPC classification number: A24F47/008 , G05D23/1917 , G05D23/1919 , H05B1/0225 , H05B1/0244
Abstract: There is provided a method of controlling an electrical heating element, including maintaining a temperature of the heating element at a target temperature by supplying pulses of electrical current to the heating element; monitoring a duty cycle of the pulses of electrical current; and determining if the duty cycle differs from an expected duty cycle or range of duty cycles, and if so, reducing the target temperature, or stopping the supply of current to the heating element or limiting the duty cycle of the pulses of electrical current supplied to the heating element. As the temperature is maintained at a known target temperature, any variation in the duty cycle or range of duty cycles expected to maintain the target temperature is indicative of abnormal conditions.
Abstract translation: 提供了一种控制电加热元件的方法，包括通过向加热元件提供电流脉冲来将加热元件的温度保持在目标温度; 监测电流脉冲的占空比; 并且确定占空比是否与预期占空比或占空比范围不同，如果是，降低目标温度，或者停止向加热元件供电或者限制供给到 加热元件。 当温度保持在已知目标温度时，预期维持目标温度的占空比或占空比范围的任何变化都表示异常状况。
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公开(公告)号：US09872521B2
公开(公告)日：2018-01-23
申请号：US15219011
申请日：2016-07-25
Applicant: Philip Morris Products S.A.
Inventor： Robin Farine , Pascal Talon
CPC classification number: A24F47/008 , G05D23/1917 , G05D23/1919 , H05B1/0225 , H05B1/0244
Abstract: There is provided a method of controlling an electrical heating element, including maintaining a temperature of the heating element at a target temperature by supplying pulses of electrical current to the heating element; monitoring a duty cycle of the pulses of electrical current; and determining if the duty cycle differs from an expected duty cycle or range of duty cycles, and if so, reducing the target temperature, or stopping the supply of current to the heating element or limiting the duty cycle of the pulses of electrical current supplied to the heating element. As the temperature is maintained at a known target temperature, any variation in the duty cycle or range of duty cycles expected to maintain the target temperature is indicative of abnormal conditions.
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公开(公告)号：US09713345B2
公开(公告)日：2017-07-25
申请号：US14427093
申请日：2013-09-10
Applicant: Philip Morris Products S.A.
Inventor： Robin Farine , Pascal Talon
CPC classification number: A24F47/008 , G05D23/1917 , G05D23/1919 , H05B1/0225 , H05B1/0244
Abstract: There is provided a method of controlling an electrical heating element, including maintaining a temperature of the heating element at a target temperature by supplying pulses of electrical current to the heating element; monitoring a duty cycle of the pulses of electrical current; and determining if the duty cycle differs from an expected duty cycle or range of duty cycles, and if so, reducing the target temperature, or stopping the supply of current to the heating element or limiting the duty cycle of the pulses of electrical current supplied to the heating element. As the temperature is maintained at a known target temperature, any variation in the duty cycle or range of duty cycles expected to maintain the target temperature is indicative of abnormal conditions.
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公开(公告)号：US11147316B2
公开(公告)日：2021-10-19
申请号：US15303424
申请日：2015-04-16
Applicant: PHILIP MORRIS PRODUCTS S.A.
Inventor： Robin Farine , Pascal Talon , Angelos Kolyris
Abstract: An aerosol generating device is provided, including a vaporiser configured to vaporise an aerosol-forming substrate; a battery connected to the vaporiser a control circuit configured to control a supply of power from the battery to the vaporiser; a memory storing a usage record of the device; and a replacement indicator configured to provide a signal to a user. The control circuit is configured to compare a measured voltage across the battery to a threshold voltage, and to generate an error signal to update the usage record if the measured voltage is less than the threshold voltage during an operation cycle. The control circuit is also configured to access the usage record and to activate the replacement indicator depending on the status of the usage record.
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