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How to implement GPS module in a robot?

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asic1984

asic1984

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gps in a robot?

hi all

how can i implement gps in a robot......to determine location

if there is any links explain that ......and the cost of it

thanks for help
 

Re: gps in a robot?

Hi,
GPS is very useless in a robot as it cannot give you very accurate positions. Currently the accuracy is around 10m. This is not good for making decisions on the robot.
However if you wish to proceed, you have buy a board that may cost around 70USD from china. You may just search the web for gups manufactutrers.

Articles will be found in ION/PLANS.

Hope this helps
B R M
 

Re: gps in a robot?

hi

thanks too much for your help

i heared what u say too ...........so i give up this idea ....but do u know any idea that enables me to determine the position of the robot

thanks alot for help
 

Re: gps in a robot?

Hi,
To determine the position of a robot you have to use kind of sensors.

If your robot moves on wheels you may ue a odometer. For other types of motion you may have to use accelerometers which are difficult to calibrate.

Let me know the movement mechanism.

B R M
 

Re: gps in a robot?

Why dont u try using and rf signal, kind of a radar witch the robot gets and retransmits, u can calculate the position of the robot relativelly to the transmiters point just by using v=l/t.
 

Re: gps in a robot?

Well the odometer is actually the same principle of the wheel mouse ... i have tried a better one ... using an optical mouse ... gave better results ... but needs a microcontroller to interface with the ps2 protocols.. plus it must be moving on a dark surface
hope i have helped
 

Re: gps in a robot?

hi

i am searching for a gps product that is like an ic chip ........i donnot need lcd screen and other features............i just need a chip that return x,y,z of the position

do any one know where can i found this product

thanks for help
 

Re: gps in a robot?

You can use rotary encoder with 2 square waves shifted by 90deg. By counting pulses you will be able to convert them to meters and the second wave is used to determine direction. Encoders can have from 50 to 10000 pulses per revolution.
Obviously you will need a microcontroller to performe calculations.

If you don't like idea wih rotary encoder you can built one by yourselve using magnets and reed switches (or hall effect sensors).
I have attached a schematic diagram of a circuit that will interface encoder or magnet wheel to a microcontroller.
 

Re: gps in a robot?

You can use ultrasonic transducers to sense the movement of the robot plus detect proximity to other objects.
 

gps in a robot?

Cause the GPS is an approximative localisation system for a robot (the precision is about a few meters), you need to employ two GPS receiver.
How it works :

Because both receiver will receive the same GPS frame with the same error, you only need to substract one from the other and you'll get the position of the second from the first....but both receiver have to communicate their position each other and be in the same area...
 

Re: gps in a robot?

I don't know your exact application.
But if you are in a set area you can use
a RF, sonar or so system to tell the robot in which part of the
grid he is in.

GPS has a lot of IC that requires it to work. So it can become costly.
I will look and see if I cant find a cheap system.
 

Re: gps in a robot?

If you still wants to use GPS I recommend you suscribe a magazine about GPS market where you can find all the manufacturers of boards and accesories of GPS and articles too.
Please visit: www.gpsworld.com and susribe the magazine (is free!)

Now you can reach decimeter accuracy with GPS technology (differential, and others). This is used in precise guidance for farm machines for example.

Some of the manufacturers are:

www.jcomco.com
www.rayming.com
www.holux.xom
www.furunogps.com
 

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