Service Robot Ultrasonic

How accurate should the distance measurements for a service robot (ie.
an autonomous vehicle) delivering medicine to rooms in a hospital be ?

I am using ultrasonic transducers and would like to know what other
people consider accurate for a robot in the above environment ?

 

[Rene Tschaggelar]

relyah@hotmail.com wrote:

How accurate should the distance measurements for a service robot (ie.
an autonomous vehicle) delivering medicine to rooms in a hospital be ?

I am using ultrasonic transducers and would like to know what other
people consider accurate for a robot in the above environment ?

The question should not 'is the accuracy 1cm or 0.1cm ?', but
rather 'what affects the ultrasonic measurements?'.
What is the difference between a lab environment and the actual
situation ? Measuring the distance to a flat surface perpendicular
the the ultrasonic beam and measuring the distance to a very soft
however oriented surface is a difference.
You're not running into problems when the distance is 5% off,
but when an object is not detected all.

Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

 

[James Meyer]

On 19 Mar 2004 08:25:36 -0800, relyah@hotmail.com posted this:

How accurate should the distance measurements for a service robot (ie.
an autonomous vehicle) delivering medicine to rooms in a hospital be ?

I am using ultrasonic transducers and would like to know what other
people consider accurate for a robot in the above environment ?

You could probably substitute yourself for the robot successfully. How
accurately can YOU estimate distances? The robot doesn't need to be any more
accurate.

Jim