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U-Ground OneBoard User Manual - General System Introduction

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General System Introduction

General System Introduction

Airelectronics has developed a complete  solution for  both rotary  and  fixed wing UAVs. The

system is composed of:

U-Pilot 0.2

U-Ground 0.2 or U-Ground OneBoard

U-See 0.2

U-Pilot takes care of the vehicle from Take-off to Landing. It is completely adaptable to any
aircraft including fixed wing, hexacopters, quadcopters and helicopters

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U-Pilot is completely capable of following a flight plan with up to 32 points (real time editable).
Once the flight plan is loaded on the U-Pilot it is independent of operator instructions. In case of

a failure in the communications, U-Pilot starts a Landing maneuver which would safely land the
UAV on the Runway Point.

Thanks to its versatility U-Pilot can control any device on board the UAV such as cameras,
parachutes and others. These devices can be real time controlled by a Computer Operator or

by U-Pilot automatically.

U-Pilot has, working in parallel:

15 PWM (Pulse-Width Modulation) outputs or even more if necessary, 

3 ADC inputs (Analogical Digital Converter) to monitor the voltages of three batteries on
the UAV 

4 serial ports RS232 to communicate with payloads, external magnetometers, etc.

A radio with up to 100 km

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GPS,   dynamic   and   static   pressure   sensors,   a   magnetometer,   gyroscopes   and
accelerometers.  

U-Pilot is built using a two parallel microprocessor approach:

One processor takes care of the state estimator and controls the UAV using hardware
acceleration to calculate high speed algorithms.

Another processor takes care of the mission at high level and the communications with
the U-Ground and Payloads management.

 the processors do not waste any time doing low level tasks.

Due   to   the   fact   that   those   two   processors   are   working   in   parallel   and   there   is   dedicated

electronics taking care of all the serial ports, sensors, inputs and outputs the system is capable
of recalculating its position, orientation and closing control loops at the speed of 1000 Hz. This

high speed gives the the UAV huge navigation accuracy and control.

On the ground segment, we have both U-Ground and U-See.

U-Ground is a control station with the other end of the radio link communicating the U-Pilot
with the U-See software.

U-See software is a user friendly program that runs in any personal computer running Windows,
Mac OS X or Linux.

Through U-See, the UAV operator can inspect the current state of the mission and command it
in real-time.

1 Range may vary with the frequency band used. Default is 900 MHz but legal limitations in some countries may 

change this.

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Содержание U-Ground

Страница 1: ...V 1 24 ...

Страница 2: ...e of Contents 1 General System Introduction 3 1 1 Concept of system operation 4 2 U Ground OneBoard 5 3 Communications 7 4 Joystick 8 4 1 Connecting the Joystick to the Main connector 8 4 2 Configuration for Futaba Joystick 9 Appendix AChangelog 11 13 2 ...

Страница 3: ...icate with payloads external magnetometers etc A radio with up to 100 km1 GPS dynamic and static pressure sensors a magnetometer gyroscopes and accelerometers U Pilot is built using a two parallel microprocessor approach One processor takes care of the state estimator and controls the UAV using hardware acceleration to calculate high speed algorithms Another processor takes care of the mission at ...

Страница 4: ...h a radio link See figure 1 attached below The U Ground has its own radio link to communicate with the U Pilot It also has an RS 232 output to relay the data to a PC running U See to allow control from the End User A Futaba Joystick allows manual override and control The mission team usually is formed by two persons The External Pilot who will have the Futaba Joystick on its hands in case a manual...

Страница 5: ... 5 joystick with the very familiar interface of a Futaba joystick while keeping all its functionality exponential settings in control mixtures etc The Futaba joystick must be connected to the ground hardware through its main connector using a Futaba Training Cord provided with the Installation Kit The ground hardware relays the data it receives from the U Pilot through a serial RS 232 interface Th...

Страница 6: ...White Red Brown 13 OUT Alarm 2 White Orange Brown 15 OUT Alarm 3 White Green Brown 25 OUT Alarm 4 White 11 OUT Alarm 5 White Grey Black 28 OUT Alarm 6 White Red 14 OUT Alarm 7 White Brown Yellow 10 OUT Square Wave Audible Signal White Purple Black Table 1 U Ground OneBoard main connector reference table Note At least one GND has to be connected to ground the other GND pins are optional All the GND...

Страница 7: ... to worry about the communications it is completely plug and play Available on the bands of 2 4 GHz 1 4 Ghz 900 MHz 455 MHz and 869 MHz with channel hopping In case you wish to use your own radio link we can supply you with a version of U Pilot without a radio on board The data transmitted from the U Pilot unit is then relayed to a computer through a RS 232 interface The computer used must have an...

Страница 8: ...with a rotary wing vehicle Joystick Alarms Alarm 5 System Is ready for flight In fixed wing system this indicates No voltage or distance related alarms triggered 3D GPS Fix with at least 6 satellites At least once since the autopilot has been comunicated the dynamic sensor was seen to indicate above 2 5 m s No autopilot alarm risen except magnetometer In rotary wing this indicates No voltage or di...

Страница 9: ... triggered at the same time the ground station will generate tones for every one of the alarms in a sequential manner Audible tone is designed to be used as an adition to a visual feedback mechanism Audible tone attacts the attention of the operator and he checks the visual feedback panel Again the Groud Station will drive at most 25 mA at 3 3V TTL As this is usually too weak to drive a buzzer wit...

Страница 10: ...K Mapping in Futaba Jotstick Aileron command Right Stick Left Right Elevator Command Right Stick Up Down Rudder command Left Stick Left Right Throttle command Left Stick Up Down Manual override request used as a digital switch Switch B Roll command during Roulette mode Wheel VR Camera Shooter3 used as a digital switch Switch D Table 2 Channel usage and usual mapping in Futaba joystick 5 1 5 1 Conn...

Страница 11: ...ics will supply you a Futaba configured for U Ground OneBoard modified with a military connector Configuration should be not altered for the proper operation of the system For reference we include hereby the proper configuration for a Futaba Feature Proper Setting Modulation PCM PPM depends on model Channel 5 switch Switch D Channel 7 switch Switch B Sub Trim All set to 0 Dual Rates 100 Exponentia...

Страница 12: ...METER Go to MODUL and change setting to MODUL to PCM PCM flashes on screen Close menu and cycle power Power Off Power On For the rest of settings please check the manual of the joystick Please check with the software U See that the joystick sticks movement correspond to the following figure In U See View Joystick 12 ...

Страница 13: ... Changelog Changelog This annex describes changes introduced to this document Date Changes 2014 09 03 Version of document up to 1 24 Added pin out for alarm signaling Added pin out for audible alarm Added description of the visible alarms Added Changelog table 13 ...

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