OPT3101: Difficulty in getting accurate distance detection

Barrett Bryan

Part Number: OPT3101

I’m currently evaluating the OPT3101EVM. When I move a cylindrical pipe away from the sensor, it reports that it is further away than it really is. I haven't plotted this to see if the offset is exponential or linear, but I had hoped to use this type of sensor in a collision avoidance system and if it is reporting obstacles as further away than they really are the pathing would not correctly navigate around them. Do you know if there is anything I can adjust or tweak to improve the accuracy of the response?

over 7 years ago

0 Alex Bhandari-Young over 7 years ago

TI__Mastermind 25895 points

Hi Barrett,

How big is the pipe and how far away is it? The EVM will measure everything in the field of view of the optics. If the pipe is small compared to the field of view of the EVM then it will give a weighted average of the pipe distance and the distance of whatever is behind the pipe. Since OPT3101 is an AFE the optics can be changed in the system design to vary the field of view, but the EVM is meant to be general so will not work perfectly for all applications.

Best,

Alex

0 Alex Bhandari-Young over 7 years ago in reply to Alex Bhandari-Young

TI__Mastermind 25895 points

Hi Barrett,

Do you still need help with this?

Best,

Alex

Sensors

Sensors forum

OPT3101: Difficulty in getting accurate distance detection