Hi. This isn't a project idea but some helpful project advice. I'm a final year engineering student myself and not too long ago I found myself searching for project ideas much like you are right now. In the end, I went with something completely original and unique that hadn't been done before, based on the knowledge I already had. Not only has it been an amazing learning experience but I might even get a research paper published out of it.
Try thinking of something that hasn't been done before, is all I'm saying.
yeah,,your right,,,im thinking for it,,but i dont know where to start,,i have idea here in my mind,,but i dont know but to build a concrete study for this,,,thanks for your advice