Hello all. Hope everyone is doing well. I have a project at the moment that is very difficult I had to ask for help on it. I have done alot of research on it. I want to make a radar type device using microwaves and and maybe an Arduino or raspberry Pi that can detect the presence of solid objects and display their hopefully density at a certain point and store it somewhere. Like the way people use ultrasound imaging to look into the human body. The only tutorials that I see are like this.
They show how to detect a moving object. Thoughts sensors only detect a moving object. How can I use them to detect just an object in general and find out the density.
I was thinking about a rough explanation of how I think this should work would be set a max distance for the microwave beam then run through a loop from closest to furthest that every place that the beam is interrupted it will detect this. The problem is these sensors detect a change in motion. I want to detect non moving objects and especially metal.
Does anyone have any advice on how to do this. I want to use microwaves instead of ultrasound because they can get through metal objects better than ultrasound. Thanks for any tips
What is ordinary radar how is it different. Is there any examples of this. I was thinking about measuring the difference in the strength of the returning microwave s because different surfaces must reflect back a different amount of waves depending on their composition.
The microwave sensors send out continuous radiation, and sense changes in the interference pattern of the reflected signals, caused by motion of both metallic and nonmetallic (absorbing) objects.
"Ordinary" radar sends out a short pulse, and measures the time it takes for the reflection to be received.
Hey Johnboyman,
What kind of microwave sensor are you using?
I've been tinkering with an RCWL-0516, and even though it can detect my movement through my office wall - I haven't found a way to map stationary objects or to get a distance from the objects in motion. the RCWL-0516 has been the only 'microwave' sensor I've stumbled across.