How to find time of rising and falling edges

Can someone help me find the time at wich the rising and falling edge are detectected in simulink. My end gold is to calculate the pulse width, pulse repetiton interval, time of arrival, and time of delay. help would be much appreciated. I am generating the pulse signal with in my model

Answer 1

[Mathieu NOE]

hello

see file attached , this is a good starting point

here we want to measure (in samples) the time difference (period) between the rising edge and falling edge of a chirp signal

the model runs a fixed time step (Fs = 10^5)

[Paul]

A more general approach that doesn't rely on a fixed time step would be to use a triggered subsystem witht the Trigger Type set to "either". Inside the subsytem subtract the current value of a Clock from the previous value. As with any approach like this, care must be taken on what to compute on the first hit crossing.

[Jose Montano Vazquez]

Thank you for the anwser. After obtaining the rising and falling edges how can I obtain the time they were detected and then use the difference of thoes times to obtain the pulse width? Do I have to use the sample time?

[Paul]

Read the comment directly above yours.

[madhan ravi]

+1 Paul

[Jose Montano Vazquez]

This is what I am implementing to obtain risng and falling edges, is there a way where I can obtain the time at which each on of them. Thank you

Answer 2

[Bharath Venkataraman]

You could use the Logic Analyzer capability (or the Simulink Scope block) to view the signal and see where teh rising and falling edges happen.