how to measure the time elapsed between the two events of the order of 0.01 microsecond from 1 microsecond to 100 microsecond using analog or digital circuits? and then count may be made available at any of the port of a microcontroller.

please specify the circuit details, if possible small explanation also.

waitng for the reply from the friends.

Lokesh

 

First of all it is necessary to choose a method for such measurement, than - a possible realization (FPGA, microcontroller, etc.). There are a few ICs that can measure such type of signal (TDC) but it depends on the requested accuracy.

More details information about such methods and converters are on International Frequency Sensor Association (IFSA) web site:

http://www.sensorsportal.com (see Archive section)
and
http://www.sensorsportal.com/HTML/SENSORS/Others.htm

 

This is not a trivial problem to solve.

Buy a high speed pulse counter or rent one, take it apart and reverse engineer their design.

M Hyatt

 

Hello,

Are the two signals repetitive?
If so, you could measure time interval using a Vernier Counter, without resorting to specially fast counters ICs.

I think you could see a description in "Pulse, Digital and Switching Waveforms" by Millman & Taub if memory serves me well. Anyway, as said, is not a trivial task.

 

A small handful of logic ICs would make this much easier than with OTS automation gear. At least that's how I would approach it. I'm fairly sure there are suitable counter boards or modules available, but finding just exactly what you need with a suitable interface may be very time consuming compared to just doing a small board.

Regards

cww