ccd images

More Drop off Sensor IR images

Updated 3/5/2005


 
 Here are a few more images of PAAMI's
      IR avoidance system recorded with a special infrared sensitive
      camera to show some of the characteristics of the GP2D12 and
      120 sensors. This camera shows visible light images with the
      IR light as bluish white coloration spots.

 While I had
      the IR camera setup, I shot a frontal view of the robot with
      the paired IR proximity sensors on. In between the paired IR
      LEDs, which transmit at 910nm, is the IS417 sensor from sharp.
 Ok, here's
      the image you have been waiting for, the projected dot from the
      GP2D12 IR ranging sensors from Sharp. the circle it projects
      is a razor sharp edged disk, about a quarter inch in diameter
      at about 5 inches. At a foot, it expands to about half an inch,
      and by 2 feet, its an inch and more diffuse. The spot you see
      here with the IR camera is one of the two rear wheel drop off
      sensors.
 With the
      lights turned off, You can see on the bottom the four white IR
      dots on the ground around the robot from the GPD sensors. The
      two rear dots are for the rear caster wheel drop off sensing
      and the side dots are the rear set of sensors for each wheel.
      The other lights all over the robot are status lamps which are
      normal LEDs transmitting in the visible spectrum.
 Side view
      with lights out, showing the pair of sensor dots on the ground
      on each side of the drive wheels. Note they are about an inch
      outside and set back a bit from the wheels so they can detect
      the edge before the wheel drives over it.


HOME

You are visitor number since June 17, 2001

FastCounter by bCentral

	While I had the IR camera setup, I shot a frontal view of the robot with the paired IR proximity sensors on. In between the paired IR LEDs, which transmit at 910nm, is the IS417 sensor from sharp.
	Ok, here's the image you have been waiting for, the projected dot from the GP2D12 IR ranging sensors from Sharp. the circle it projects is a razor sharp edged disk, about a quarter inch in diameter at about 5 inches. At a foot, it expands to about half an inch, and by 2 feet, its an inch and more diffuse. The spot you see here with the IR camera is one of the two rear wheel drop off sensors.
	With the lights turned off, You can see on the bottom the four white IR dots on the ground around the robot from the GPD sensors. The two rear dots are for the rear caster wheel drop off sensing and the side dots are the rear set of sensors for each wheel. The other lights all over the robot are status lamps which are normal LEDs transmitting in the visible spectrum.
	Side view with lights out, showing the pair of sensor dots on the ground on each side of the drive wheels. Note they are about an inch outside and set back a bit from the wheels so they can detect the edge before the wheel drives over it.