Video transmmision problem

[awaisaamir]

hy,
i am final year engineering student. we have to transmit video in real time from a robot to base unit for this purpose which module should we use . please suggest some idea

thanks

 

[jeffrey samuel]

Are you planning wired or wire less transmission also tell the range which has to be transmitted

 

[awaisaamir]

Are you planning wired or wire less transmission also tell the range which has to be transmitted

its wireless and range is within 1km

 

[ALERTLINKS]

What frequency band is chosen? There may be legal issues for such a range. Antenna plays important role in range of system.
Will it be a whip antenna on robot.

 

[sky_123]

About the only legal option is probably making use of the mobile phone network. 3G access would do it.

In the absence of 3G, it is possible to transmit video at (say) one frame per sec with a low resolution, with just a few kHz bandwidth. I don't know of any codec (I don't work in this area).

 

[awaisaamir]

yes we can use antenna , is there any zigbee(XBee) module which can use with our robot

 

[sky_123]

its wireless and range is within 1km

How will Zigbee get you a 1km range?

 

[bigdogguru]

yes we can use antenna , is there any zigbee(XBee) module which can use with our robot

While Digi does offer the XTend 900MHz line of long range XBees, 40 miles line of sight or 3000ft indoors, the available throughput, 115Kbps, is not sufficient for anything close to real time video.

The Digi XTend modules are also rather expensive at around $180 per module.


sky_123's suggestion of using a GPRS/GSM module is certainly one possibility.

Another possible option would be to use long range WiFi, although these units can be expensive as well.

Most are comprised of a high dB directional antenna with 1000mW or 2000mW WiFi transmitter.

**broken link removed**


BigDog