Belkin XM Commander Manual de usuario descargar pdf (Pagina 3)

System Requirements

• The system will transmit and receive at least 2 ultrasonic signals to sense

obstacles in the environment.

BeagleBoard-XM

• The BB-XM will use embedded ARM processor to manage all peripherals.

• The BB-XM will use embedded DSP processor and shared memory to update a

map at least every 3 seconds.

• The BB-XM will send command signals to the pioneer-3 via serial

communication

• The BB-XM will manage wireless Belkin adapter and report progress to remote

user.

Transmitting

• The transmitting array will agitate the environment at a frequency of 40kHz ±

1.0kHz.

• The transmitting array will transmit from at least 3 sources.

• The transmitting array will be able to steer a minimum ± 60 degrees to the

perpendicular by using digital signal processing techniques

Receiving

• There will be an equal amount of receivers as there are transmitters.

• The receiving array shall be able to receive multiple echoes at each component.

• The receiver array shall pass each sample to an A/D converter.

A/D

• The A/D will sample the incoming signal at a minimum sampling rate of 84 kilo-

samples a second.

• The A/D will have a minimum resolution of 4 bits.

Multiplexing

• The multiplexer will switch at a minimum frequency of 2 MHz.

• The multiplexer will not be any slower than (42*N) Hz; where N is the number of

receivers.

• The multiplexer will communicate all data to the Beagleboard-XM through a

serial data stream.

Belkin Wireless G USB Adapter

• Will communicate with remote user at least every 2 seconds.

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Belkin XM Commander Manual de usuario Pagina 3