Components selected

March 19th, 2011 by jed Leave a reply »

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A) Components selected :

The main motherboard responsible for performing the calculations, the choice is the Fox board Board G20

His features

Power

+ 5

Volts

Consumption

60 mA

Processeur ARM9™ AT91SAM9G20400 MHz d’Atmel™
Memory 64mbyte@ 32bit 133MHZ
I/0 – 28 portsd’entrées/sorties

– 2 ports série (niveau 3,3 V)

– 4 entrées de conversion “A/N”

– bus I2C™ / SPI™

– Sortie PWM

The GPS is the MediaTek MT3329


His features

Channels 66 channels
Sensitivity -165dBm tracking
Maximum update rate up to 10Hz
Dimension? 16mm x 16mm x 6mm
Position Accuracy Position Accuracy
Cold Start under 35 seconds (Typical)
Warm Start under 34 seconds (Typical)
Hot Start under 1 second (Typical)
Low Power Consumption 48mA @ acquisition, 37mA @ tracking
Low shut-down current consumption? 15uA, typical

The magnetometer is the HMC5843 three axes:

Alimentation

voltage of 2.5-3.3VDC

Sorties

Dimensions

0.5×0.5″ (12.7×12.7mm)

Alimentation

Consommation

Résolution

Précision

Filtrage

Sorties

I2C interface

The accelerometer is the ADXL335

His features

Dimensions 4 mm × 4 mm × 1.45 mm LFCSP
Sensing 3-axis sensing
Consommation Low power – 350 ?A (typical)
Excellent temperature stability
Single-supply operation1.8 V to 3.6 V

Communication is based on XBee

Alimentation

+ 3.3

Volts

Consommation

210 mA

Puissance

50 mW

(+17 dBm) power output

Point-to-multipointnetworking ideal for low-latency applications

Support for large, dense networks128-bit AES encryption

RPSMA connector

Industrial temperature rating

(-40° C to +85° C)

Advanced mesh networking and low-power modes supported

Cette note est également disponible en: French

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