Zerotech DOBBY User Manual

8
零度智控（北京）智能科技有限公司
GPSPositioning


Theaircraf tusesaGPS/GLONASSdual satellitepositionin gsystem.The satellitepositioningsystemis
GPSbased,wi th GLONASSactingasasupplementarysystem.
Duringoutdoorflight,theaircraftusesGPSpositioningwhenithasfoundaGPSsatellitenumber
largerthan7.
OpticFlowandUltrasonicWavePositioning


Theaircraftwillusetheopticflowandultrasonicwavepositioningduringindoor
flight.IftheGPSsignalispoorduringoutdoorflight(ifthesatellitenumber
foundissmallerthan6),thentheaircraftwillautomaticallyswitchtoopticflow
andultrasonicwavepositioning.

Theopticflowandultrasonicwavepositioningsystemcombinesmotionanalysis
tohorizontallypositiontheaircraftduringflightandanultrasonicdistance
measurertodeterminethedistancefromtheground.Itpositionstheaircraft
duringindoorflightandassiststheGPSpositioningsystemduringoutdoorflight.

Theopticflowandultrasonicwavepositioningmoduleislocatedonthebaseof
theaircraft.Itconsistsofanopticalflowcameraandanultrasonicwavesensor.
UsageConditionsandRestrictions

Theopticflowandultrasonicwavepositioningsystemisusedforindoorflight.Itisalsousedforoutdoorflightif
theGPSsignalisweak.Theoperatingheightrangeforthispositionin
gsystemis0.5‐3m.

Whenusingthispositioningsystem,aftertheaircrafthasbegunflyingandascendedto0.5m,itwilldetermineif
therequirementsforusingthissystemhavebeenmet.Iftheyhavenot,itwillinitiatelanding.Iftherequirements
arenotmetforthissystemduringflight,theaircraftwillalsoinitiatelanding.

Requirementsfortheopticflowandultrasonicwavepositioningsystem:Whenusingthissystem,thearea
underneaththeaircraftneedsbehaveanoticeabletexturedsurface.Userscanputasquareclothontheground,
tableoroveranylarge,flatsurfacetoprovidetherequiredtexturedsurface.
Theopticflowandultrasonicwavepositioningsystemmaynot
workunderthesecircumstances,pleaseusecarefully:
 Aboveuniformly‐colouredsurfaces(Likecompletelyblack,whiteetc.);
 Abovestronglyreflectiveorinvertedsurfaces;
 Abovewaterorclearobjects;
 Abovepeopleormovingobjects;
 Areaswithrapidlychanging/flashinglights;

Zerotech DOBBY Specifications

General

Type	Quadcopter
Easy to use	Yes
Product color	White
Construction type	Ready-to-fly (RTF)
Maximum speed	- m/s
Number of rotors	4 rotors
Maximum flight time	9 min
Maximum weight capacity	- kg
Maximum wind resistance	7.7 m/s
Horizontal hover accuracy	0.3 m
Maximum operating distance	100 m
Megapixel	13 MP
Sensor type	CMOS
Video resolutions	320 x 240, 640 x 480, 1280 x 720, 1920 x 1080 pixels
Maximum frame rate	30 fps
Optical sensor size	1/3.06 \
Supported video modes	1080p
Image formats supported	JPG
Video formats supported	H.264, MP4, MPEG4
Maximum image resolution	4208 x 3120 pixels
Field of view (FOV) angle	75 °
Internal memory	16 GB
Memory card slot(s)	-
Operating temperature (T-T)	0 - 40 °C
AC adapter frequency	50/60 Hz
AC adapter input voltage	100 - 240 V
Battery voltage	7.6 V
Battery capacity	970 mAh
Number of batteries supported	1
Operating frequency	2400, 5000 MHz
Moving control functions	Backward, Downward, Forward, Turn left, Turn right, Upward

Weight and Dimensions

Depth	145 mm
Width	135 mm
Height	36.8 mm
Weight	199 g