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Hall sensor time out calculation

electronicsLearner77

Jul 2, 2015
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I want to measure the speed using the hall sensor, one part of it is to detect hall sensor time out. I want to set around 150ms as hall timeout, that is there is no hall transition for 150ms. So, i wanted to confirm 150ms corresponds to 1000/150Hz = 6.6 Hz? Am i correct or any other factor to be considered? Please advise.
 

Harald Kapp

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Nov 17, 2011
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hall sensor time out.
What do you mean by "hall sensor timeout"?
If you want to detect when there has been no transistion from the hall sensor's output within a timespan of 150 ms, a suitably set monoflop (monostable multivibrator) can be used. Here's an example.
No need to convert to frequency.
i wanted to confirm 150ms corresponds to 1000/150Hz = 6.6 Hz?
If a signal repeats at 150 ms intervals, that's equivalent to 6.66666 Hz (6.7 Hz after rounding). If the sensor's output changes more often, the frequency is higher.
 

electronicsLearner77

Jul 2, 2015
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1677078007281.png
Hall time out is no hall signal from Hall sensor connected to the motor. So, I want to consider if there is no signal (low or high) for 150ms then hall is disconnected.
 

bertus

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Nov 8, 2019
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Hello,

Do you have a document to share where this signal is given?

Bertus
 
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