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SYSTEM AND METHOD FOR MAINTAINING PERFORMANCE OF BATTERY-OPERATED TOOTHBRUSHES
专利权人:
发明人:
BENNING WOLTER,LUMBANTOBING ARI,MILLER KEVIN
申请号:
IN3069/CHENP/2009
公开号:
IN299494B
申请日:
2007.11.02
申请国别(地区):
IN
年份:
2018
代理人:
摘要:
The system periodically measures the battery voltage of the toothbrush and the current in a stator portion of the motor for the appliance. The amplitude of movement of the toothbrush workpiece is determined from the measured stator current. A circuit/control program changes the duty cycle or pulse width of the drive signal from the motor if the battery voltage drops below a first threshold value and a circuit or control program changes the drive frequency of the appliance if the amplitude of the workpiece movement falls below a first threshold value. A circuit/control program terminates the operation of the toothbrush if the voltage drops below a second threshold value or if the amplitude drops below a second threshold value, both of which are less than the respective first thresholds. WO2008053454A1
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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