missing pulse detector

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AndreasHB
Level 3
Level 3
5 sign-ins 5 questions asked 5 replies posted

I need a missing pulse detector on a PSOC 4. My Signal is 500ms low and 500ms high. If the Signal is low or high for more than 500ms, the output goes to low.

Is this possible (only with digital blocks / no software) ?

Thanks Andreas.

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1 Solution
3 Replies
Bob_Marlowe
Level 10
Level 10
First like given 50 questions asked 10 questions asked

You will need a one-shot timer which you can compare to the signal. This will need some software, but you can put this into an interrupt handler. So there is only a small amount of program flow distortion and no need to wait / poll for an event.

Bob

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missing pulse detector.jpg

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My missing pulse detector is running with a Count7, a Edge Detector and a SR-Flip-Flop. The reset of Count7 must be an asynchronous reset signal.

Andreas

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