On Tue, 12 Oct 2004, Alex Makarenko wrote:
> Which power source did you use for your computer and sensors?
> (Many used a laptop as the onboard computer, but you still need to power the
> 1. On board 72V. Any issues with this? Where did you pick it up, below the
> plate with 4 buttons? Or above the plate inside the center column? What was
> practical run-time with a SICK laser?
> 2. Extra battery. Which one? Did you put a charger on the segway? Did you
> charge it separately or off the same AC source as the main battery charger?
I don't know if it's changed now, but we were told by Segway not to get
into their power system. So we built our own.
We use two 12V 35Ah SLA batteries in parallel (each one is about the
size of a car battery). The batteries sit on the bottom, where your
feet would be if you were riding. We built a power distribution box
that spits out various useful voltages, like 5V for various gadgets,
16V for laptops; to get 24V for lasers, we use separate Vicor DC-DC
converters. The power box also has circuitry for charging. We have a
large (don't remember the exact specs) SLA battery charger.
I don't know the exact runtime, but it's quite long, usually longer than
you want to be continuously working with the robot.
Brian P. Gerkey gerkey@...
Stanford AI Lab http://ai.stanford.edu/~gerkey