Synchronization method for reading a status of an electrical contact of a motor vehicle
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United States of America Patent
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Nov 8, 2022
Grant Date -
Sep 17, 2020
app pub date -
Oct 8, 2018
filing date -
Oct 9, 2017
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Abstract
A method for synchronizing acquisition of an analog signal value with a read signal for a state of an electrical contact of a motor vehicle. The method includes: controlling, at each start time of the first task, the power supply module so that the power supply module generates a read signal voltage pulse at the interface module input; at the same start time, triggering a counter for a predetermined duration shorter than the duration of the read signal voltage pulse; on the expiration of the counter duration, measuring the value of an analog signal generated by the interface module based on the state signal and of the read signal; and controlling, at the next start time of the second task, the power supply module so that the power supply module generates a zero voltage signal at the interface module input until the next start time of the first task.
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