- #1
saguntripathi
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Hi all..
I have been working on a project which involves the measurement of ignition delay of fuel droplets using optical sensors of the beam-break type. What my project supervisor has asked me to do is to fabricate an apparatus in which such measurements could be made. The basic principle would be to trigger a stop watch as soon as the beam of the sensor is intercepted by a fuel droplet and stop the timer as soon as ignition takes place.
Being a student of mechanical engineering I do not have much knowledge of sensors and other electronic circuit components. I have been browsing the internet for a while now looking for sensors and the suitable circuit that would be required in this case. During my search I also found out that photodiodes in reverse bias have very high resistance and their resistance decreases when light falls upon them. I was wondering how could this change in resistance be utilized for triggering a stop-watch.
Can anyone suggest a possible circuit design for measuring the ignition delay?
The operating temperatures and pressures would be quite high and so the sensor should be able to work in those conditions as well.
It would be nice if anyone could help. Thanks
I have been working on a project which involves the measurement of ignition delay of fuel droplets using optical sensors of the beam-break type. What my project supervisor has asked me to do is to fabricate an apparatus in which such measurements could be made. The basic principle would be to trigger a stop watch as soon as the beam of the sensor is intercepted by a fuel droplet and stop the timer as soon as ignition takes place.
Being a student of mechanical engineering I do not have much knowledge of sensors and other electronic circuit components. I have been browsing the internet for a while now looking for sensors and the suitable circuit that would be required in this case. During my search I also found out that photodiodes in reverse bias have very high resistance and their resistance decreases when light falls upon them. I was wondering how could this change in resistance be utilized for triggering a stop-watch.
Can anyone suggest a possible circuit design for measuring the ignition delay?
The operating temperatures and pressures would be quite high and so the sensor should be able to work in those conditions as well.
It would be nice if anyone could help. Thanks
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