CanSat LEEM-UPM 20081

APOLLO DE FRESA

CanSat LEEM-UPM 2008International competition

CanSat LEEM-UPM 20082

Flight

CanSat LEEM-UPM 20083

Data acquisition

• Data transmission at 4800 baud

• Data storage in EEPROM

• Real-time graphical display

• 4 new messages per second

• 12 historical messages per second

• Reliability

• Redundancy

• Robustness

• Precision

CanSat LEEM-UPM 20084

Data analysis

Data analysis Pressure vs Time

CanSat LEEM-UPM 20085

0 50 100 150 200 2500.84

0.85

0.86

0.87

0.88

0.89

0.9

0.91pressure

Data analysis Height vs Time

CanSat LEEM-UPM 20086

0 50 100 150 200 250-100

0

100

200

300

400

500

600height

Data analysis Temperature

CanSat LEEM-UPM 20087

-100 0 100 200 300 400 500 6000

5

10

15

20

25

30temperature vs height

0 50 100 150 200 2503

4

5

6

7

8

9

10

11temperature

CanSat LEEM-UPM 20088

Data analysisAcceleration vs Time

0 200 400 600 800 1000 1200 1400-15

-10

-5

0

5

10

15

20

25acceleration

CanSat LEEM-UPM 20089

Data analysisEvents Detection

0 200 400 600 800 1000 1200 1400-100

0

100

200

300

400

500

600height

-10 0 10 20 30 40 50 60 70 80

0

50

100

150

200

250

300

350

400

450

500

height

Parachute deployment (12s)

Bay deployment (11,75s)

Take off (0 s)

CanSat LEEM-UPM 200810

Data analysisEEPROM Data Recovery

0 50 100 150 200 250 300 350 4008400

8500

8600

8700

8800

8900

9000

9100pressure from EEPROM

Data analysis3-D Trajectory

CanSat LEEM-UPM 200811

Problem evaluation

CanSat LEEM-UPM 200812

• Bad quality in GPS reception

• Radio link error when the line of sight is lost (2km distance)

Conclusions

CanSat LEEM-UPM 200813

• Lossless transmission during the flight (6 minutes)

• Flight and landing at the estimated velocity

• Robustness in data acquisition

• High quality in barometric altitude, temperature and acceleration data

• Low quality in GPS sensor

• Easy to find due to color selection ;-)

CanSat LEEM-UPM 200814

Thank you