Communication system for on board data telemetry to ground

7/22/2019 Communication system for on board data telemetry to ground.

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Electronic CommunicationSystem for On Board Data

Telemetry to Ground.


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PROJECT DESCRIPTION

To make a telemetry system for a UAV, measure and transmitcertain parameters such as air pressure, altitude, temperature,differential pressure, airspeed, global positioning data by GPSand wireless transmission of all the data to Ground ControlStation which are displayed on a Graphical User Interface (GUI).Bixler2, a small Radio-Controlled plane has been used as a testbed.


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Electronics Template

BLOCK DIAGRAM


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Microcontroller

High performance, low power AVR 8 bit microcontroller is usedfor data acquisition, processing and communication withGround Control Station.

It has seven 10-bit ADC channels, USART, four PWMchannels, three timers and serial peripheral interface.

Up to 16MIPS throughput at 16MHz. 16KB in-system programming flash, 1KB EEPROM and 512

bytes SRAM.

Analog sensors has been interfaced with microcontroller ADCs and GPS receiver is serially connected.


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SENSOR BOARD

Sensor board contains all the necessary sensors andtransducers for measuring atmospheric parameters and

RC plane altitude and airspeed.Sensors used here includes:


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Temperature Sensor

Analog sensor LM35 has been employed for measuring airtemperature, having a range of -55 C to +150 C.

LM35 is a precision integrated circuit with an output directlyproportional linearly proportional to centigrade temperature.

Calibrated directly in Celsius (centigrade), 10mv/C scalefactor.


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ABSOLUTE PRESSURE SENSOR

Manifold absolute pressure sensor (MAP) MPX4115 has beenused for measuring absolute pressure.

Calibrated and on chip signal conditioned, having a range of15 to 115 Kilopascals.


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DIFFERENTIAL PRESSURE SENSOR & AIRSPEED

MPX7002DP has been used for measuring differentialpressure.

Pitot static system has been implemented on the RCplane(UAV) for measuring airspeed.


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GLOBAL POSITIONING SYSTEM (GPS)

Global positioning System (GPS) receiver is used for absoluteposition of the RC plane, providing coordinates such as latitude,longitude and time with path tracks.


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Ground Control Station (GCS)

GCS consists of a laptop with a wireless communicationmodem.

Laptop runs a windows based Graphical User interface(GUI)developed in house for displaying all the flight information inreal time.

Radio modem ground module receives all the parameters anddisplays it on the GUI panel.


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Graphical User Interface


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Benefits of the ProjectTelemetry system finds many real world applications with its vast benefits in

many fields. We have devised a telemetry system in a UAV with low costsensor board for automatic transmission of real time data to our ground unit.The telemetry system is useful for real time data transmission over longdistances and less noise affect and bidirectional communication. It is usedwidely in UAVs for its monitoring and controlling through ground unit.Following are the key benefits:

Wireless data transmission over long distances. Bi directional communication between the UAV and ground station. Monitoring of the UAV from portable ground unit.

High precision low cost sensor board for measuring atmospheric and aircraftparameters.


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Applications in different fields Oil and Gas industries Space science Motor Racing Agriculture

Water management Military Intelligence Energy monitoring Bio and neuro telemetry (Medicine/Healthcare)


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And the research continues


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To turn our sensor board into an autopilotboard!!!


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To convert an RC plane into an

Autonomous UAV Basic difference between an RC plane and an unmanned aerial vehicle

is that unlike a RC plane, UAV can perform autonomous operation andnavigation with automatic take off and landing.

With design of a sensor board and a low cost telemetry system fortransferring the remote data to ground control station, an idea we havein mind which we going to implement in future is to convert the RCplane into an autonomous Unmanned aerial vehicle, by designing anautopilot board and merging it with our sensor board.

Many autopilot boards are available but with high cost and somelimitations.

Designing a low cost autopilot board will remove any limitations andhelp us to fuel this research and to promote this technology in Pakistan.


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THANK YOU!


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Participation of Team DUET in AllPakistan Project Exhibition at Ghulam

Ishaq Khan Institute of EngineeringSciences and Technology (GIKI)


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We are thankful for your support and the confidence youshowed on us.

Vice Chancellor DUET Dr. Faizullah Abbasi. Chairman Dept. of Electronic Engineering Prof. Rashid Baig. Supervisor Sir Sohail Rana.

We are looking forward to avail more opportunities and torepresent DUET at the major events.

Documents

Communication system for on board data telemetry to ground