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Switch validation circuit and method
专利权人:
INCLINE THERAPEUTICS INC.
发明人:
LEMKE JOHN,SATRE SCOT,CHEN CORINNA X.,READ BRIAN W.
申请号:
NZ61460512
公开号:
NZ614605A
申请日:
2012.03.09
申请国别(地区):
NZ
年份:
2015
代理人:
摘要:
Disclosed is a switch operated medical device. The medical device comprises a use-actuated device switch (302) configured to be actuated by a user and a switch integrity test sub circuit. The use-actuated device switch (302) provides a switch signal to a switch input of a device controller (510) when actuated by a user. The device controller (510) is configured to actuate the device after the user presses the device switch (302) at least two times within a predetermined interval. The device controller further includes the switch input operatively connected to the device switch (302) and is configured to receive the switch signal from the device switch (302). The device controller (510) is configured to actuate the device after a second push of the device switch (302) when the switch signal meets certain predetermined conditions. The switch integrity test sub circuit is configured to detect a fault or a precursor to a fault in the device switch (302) by determining an evoked response at the switch input after release of the device switch (302) but before the second push of the device switch (302). When the controller (510) sets the switch input to one or more predetermined voltages to evoke a response, and compares the evoked response to one or more expected values, and causing the controller to execute a switch fault subroutine when a fault or a precursor to a fault is detected.
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