I am working on a project that requires frequent distance measurements at a distance of 30m (could go as low as 15m though). To give you a better understanding of what I am asking, I want to measure the distance between cars and the back of a bicycle. This requires that the sensed area is semi-wide (larger then a single laser) but not to wide (as I dont want superfluous information).
I have done a lot of research on the subject, and have been unable to find an affordable sensor that does this well. The options appear to be using a laser (which i would like to avoid as LIDAR tends to be expensive, using single lasers isnt a wide enough area, and they have higher energy demands), switching to a raspberry pi and getting measurements with a webcam (also energy intensive), or using a microwave/radar sensor. I would really love to pursue the last option.
I have an HB100 w/ effective range about 15m, but it requires lots of amplification resulting in a huge amount of noise making it more or less ineffective. If anyone has any tips for using the HB100 effectively, I would love to hear them?? If not, does anyone know of a sensor or have another approach to solving this problem???