Author Topic: Reproduce the sonar sensor system of robot vaccum cleaner  (Read 902 times)

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Offline doly77Topic starter

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Reproduce the sonar sensor system of robot vaccum cleaner
« on: September 09, 2011, 02:24:18 PM »
Hi,

As the title say, I would like to reproduce the sonar sensor system that we can find in most robots vaccum cleaner.
It doesn't seem very difficult to reproduce but I'm a beginner and I need some help in order to know what component to use.


I already know that I need :

- 4 Devantech SRF04 Ultrasonic Range Finder
- 1 Parallax BASIC Stamp 2 Microcontroller
- 1 Parallax BASIC Stamp 2 Carrier Board

What should I use in order to powered the BASIC Stamp 2 and the 4 SRF04 ?

Do I need anything else ?


Thanks


Offline rbtying

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Re: Reproduce the sonar sensor system of robot vaccum cleaner
« Reply #1 on: September 09, 2011, 05:53:26 PM »
Most robotic vacuum cleaners don't have sonar... at least, the Roomba series doesn't, nor the Neato ones.

Anyways, you probably want a battery pack and an appropriately rated switching regulator--those ultrasonic rangefinders can draw quite a bit of current when generating pulse. You might be able to get away with a linear regulator though, since it's a very low duty cycle load.

Offline doly77Topic starter

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Re: Reproduce the sonar sensor system of robot vaccum cleaner
« Reply #2 on: September 10, 2011, 03:42:33 AM »
Most robotic vacuum cleaners don't have sonar... at least, the Roomba series doesn't, nor the Neato ones.

Anyways, you probably want a battery pack and an appropriately rated switching regulator--those ultrasonic rangefinders can draw quite a bit of current when generating pulse. You might be able to get away with a linear regulator though, since it's a very low duty cycle load.

Thanks for your answer.

I was thinking add an external 5V Regulator.

You said that most robotic vacuum cleaners don't have sonar, do you know what they use instead ?

Offline rbtying

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Re: Reproduce the sonar sensor system of robot vaccum cleaner
« Reply #3 on: September 10, 2011, 09:35:26 AM »
Roombas crash into things and use a bump sensor to detect the obstacle, then turn away from it. The Neato XV-series uses a scanning laser rangefinder and mapping algorithms; however, there's no cheap way to do this--people actually buy the Neato 'bots to get the laser scanner, since the cheapest commercial version is around $1100.

Offline doly77Topic starter

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Re: Reproduce the sonar sensor system of robot vaccum cleaner
« Reply #4 on: September 11, 2011, 07:24:19 AM »
Ok, thanks for your answers.

 


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