Archive for March, 2010

Quadrocopter NordStar

Pagaliau, pirma kartą išbandžiau quadrocopter’į. Stabilizavimo kontroleris dar nesuderintas. Trauka pakankamai gera, panašu, kad galės pakelti nemenką svorį. Trumpai apie kopterį:

- Plastikinis korpusas,
- 4S1P LiFePO4 2300 mA akumuliatorius (60A)
- 4x 927KV 150W elektriniai varikliukai
- 2x 10×6″ standartiniai propeleriai (24 cm) ir 2x 10×6″ reversiniai
- ST Cortex M3 32-bitų kontroleris

Planuojama pridėti: GPS, 433 MHz didelio nuotolio dvipusio ryšio telemetrija bei SD raiškos video transliacija.

Finnaly, I’ve tested my quadrocopter NordStar. Flight controller needs some tuning. Thrust is very good, it seems that it will be able to lift much payload. Brief specs:

- Plastic frame
- 4S1P LiFePO4 2300 mA battery (60A)
- 4x 927KV 150W electric motors
- 2x 10×6″ regular propellers (24 cm) and 2x 10×6″ reverse pushers
- ST Cortex M3 32-bit microcontroller

Planning to add GPS, 433 MHz long range communication module for telemetry and SD resolution video broadcast

YouTube Direkt

First arrest in the UK assisted by UAV drone

Drone was deployed by Merseyside police after officers lost the alleged offender who had escaped on foot in thick fog.

Using the device’s on-board camera and thermal-imaging technology, the operator was able to pick up the suspect through his body heat and direct foot patrols to his location. It led officers to a 16-year-old youth, who was hiding in bushes alongside the Leeds-Liverpool canal, in Litherland, Merseyside. The drone, which measures 3ft between the tips of its four carbon fibre rotor blades, uses unmanned aerial vehicle (UAV) technology originally designed for military reconnaissance.

It is designed to hover almost silently above crime scenes and send live footage to officers on the ground, but the unit can also ‘perch and stare’ from a solid platform, allowing the operator to capture hours of footage from a hidden vantage point.

Merseyside Police is one of a handful of forces trying out the devices which, at £40,000 each, are far cheaper to use for small-scale operations than a conventional helicopter. They have been using the drones for two years, mainly to help in search and rescue operations, to execute drug warrants and to crack down on anti-social behaviour. Police chiefs decided to draft in the drone, which can reach heights of 500ft and is controlled by an officer up to 1,500ft away.

The live footage was being viewed by the UAV’s operator in the mobile command vehicle and they were able to direct patrols on the ground. The Home Office is now exploring how the craft can be used to give back-up to police, ambulance and fire services. Documents showed the force hoped to begin using the drones in time for the 2012 Olympics. But they also indicated that the drones could eventually be used to spy on the civilian population, by rooting out motorists suspected of antisocial driving, for covert urban surveillance and to monitor ‘waste management’ for local councils.

First photos (snow cover)