Method and system for detecting an obstruction of a passenger door
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United States of America Patent
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May 19, 2020
Grant Date -
Oct 26, 2017
app pub date -
Apr 19, 2017
filing date -
Apr 21, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A method of detecting an obstruction of a passenger door on a public transit vehicle comprising the steps of: recording the profile of the actuator (motor) current vs. door position following initiation of an opening or closing of the door; based on the recorded profile of actuator current vs. door position acceptable increase in motor current for one or more discrete positions following initiation of opening or closing the door indicative of no obstruction; and comparing an instant current profile to the acceptable increase and indicating a potential door obstruction if the current exceeds the acceptable increase.
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