Skip to content
Rande Johnson edited this page Jan 11, 2015 · 2 revisions

##Sensing Presence/Absence##

These sensors are used to detect the presence or absence of some object. This is incredibly important for robotics applications since we are always in need of information about what is in our robot, next to it, etc. These sensors come in several flavors:

  • Proximity: Usually magnetic, detect the presence/absence of metal or a magnet within their field of view (FOV)
  • Through-beam: Usually infrared, detect something breaking a beam between the transmitter & receiver.

Proximity Proximity or "Prox" sensors. Our first use of this was in 2014 on our Aerial Assist robot. We used magnetic proximity sensors to detect when the net arms were closed. A magnetic prox sensor detected a magnet located on the arm.

Through-beam There is an excellent video on through-beam electronic sensors.

Clone this wiki locally