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ELECTRONIC AEROSOL PROVISION SYSTEM
专利权人:
NICOVENTURES HOLDINGS LIMITED
发明人:
BUCHBERGER, Helmut,DICKENS, Colin,FRASER, Rory
申请号:
PH12017500302
公开号:
PH12017500302A1
申请日:
2017.02.17
申请国别(地区):
PH
年份:
2017
代理人:
摘要:
An aerosol provision system, such as an electronic cigarette, comprises a heating element for generating an aerosol from a source liquid and control circuitry for controlling a supply of electrical power from a power supply, such as battery / cell, to the heating element. The control circuitry is configured to measure an indication of a derivative of an electrical characteristic of the heating element with respect to time, for example a first time derivative or a second time derivative of a resistance of the heating element (or a related parameter, such as conductance, current draw, power draw or voltage drop). Based on the measured time derivative, the control circuitry is configured to determine whether or not a fault condition, e.g. localised heating of the heating element, has arisen for the electronic aerosol provision system. The overall change in the electrical characteristic for the heating element caused by the localised heating may be small and so difficult to reliably identify, but the rate at which the change occurs can be expected to be relatively high, which can mean the time derivative of the local characteristic is more reliable indicator of the occurrence of the fault condition.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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