Arnold Aalders,Hassan El Barakat,Theodorus Johannes Adrianus Maria Den Bekker,Cornelis Johannes Janson
申请号：
US15663993
公开号：
US10143786B2
申请日:
2017.07.31
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A breast pump system includes a solenoid valve and a power source. The power source is arranged to supply electrical power to the solenoid valve so as enable the solenoid valve to move between first and second positions. The breast pump system also includes a controller configured to detect a change in inductance of the solenoid valve that is indicative of the solenoid valve moving from first to second position and a control action in which the vacuum pump is stopped.
