trabalhos em desenvolvimento no lsec

Laboratory of Critical Embedded

Systems (LSEC)

Supervisor: Profa. Dra. Kalinka R. L. J. C. Branco

A control system focused on

minimizing drift - specification of a

VTOL

Natássya B. F. da Silva

Concepts

• UAV (Unmanned Aerial Vehicles)

▫ Critical Embedded System.

▫ Composed by sensors, microprocessors and communication units.

▫ Ground station.

Concepts

• VTOL (Vertical Takeoff and Landing)

▫ Fixed-wing aircrafts, helicopters and others with powered rotors like quadcopters.

▫ Increased flexibility.

• Tailsitter

▫ Takeoff and land on its tail.

▫ Uncomfortable position for the pilot.

Concepts

• VTOL operation.

Concepts

• PID Control (Proportional, Integral and Derivative)

Application Scenario

• A manned aircraft is responsible for the pesticide spraying.

• VTOL used for direct sensing.

• Communication with the manned aircraft.

• Minimize the drift.

Objective

• To build a control system that allows the VTOL to fly autonomously in its three modes: takeoff, land and cruise.

Tools and Techniques

• Model Driven Development.

• Simulink and Real-Time Workshop.


• X-Plane Simulator


• Hardware in the loop

Extending unmanned aircraft systems:

specification of a data communication

architecture

Daniel F. Pigatto

Goals

• There are researches that specify and validate architectures for UAS, but they do not focus specifically on data communication aspects;

• These researches also do not consider the concept of IFA (In-flight awareness), which is based on Sense and avoidance;

• The main goal of this project is the development of a data communication architecture for UAS.

Reference model for UAV architectures

Service-oriented architectures for

complex safety-critical embedded

systems: a case study on UAVs

Douglas Rodrigues

PhD Project

• This project proposes the use of SOA for critical embedded systems, focusing on UAVs.

• The approach proposed in this PhD project considers critical embedded systems can be divided into sections of low and high criticality, from a reference model architecture for UAVs proposed in Rodrigues et al. (2011).

PhD Project

• KBF extends the broker service discovery capability adding knowledge about the application domain.

• In this way, the application designer, or even the application itself, can choose or compose the best service based on a set of usage rules and some selection criteria such as:

▫ dependability, security, performance and real time response.

Development of a Plug and Play

Mechanism for using Smart Sensors

Arrays in UAVs

Rayner M. Pires

Objectives

• Contribute for the progress of UAV autonomy

• Dissociate from the aircraft the mission processing task

▫ Use of MOSA (Mission-Oriented Sensors Array)

▫ Proposal and development of SSP (Smart Sensor Protocol) and SSI (Smart Sensor Interface)

Mission-Oriented Sensors Array

SSP

Hardware connection

⁞

Mission accomplishment

Data exchange via SSP/SSI

SSP

Connection and Session establishment

Mission parameters negotiation

•Is it na aircraft?•Is it ready to fly?•What’s the estimated remaining autonomy time?

•Can it fly over the given GPS points?

•Can it fly under specific speed and height?

•Does it have external services?•How can they be invoked?

Mission feasibility

•Feasible•Partially feasible•Unfeasible

On-the-fly data

exchange

MOSA and UAV exchange data while

mission accomplishment

SSI

• It’s a connection middleware

• Via of communication between both parts

• Enables conversation through SSP

Generation of spectral signatures for

detection of pathologies in Eucalyptus

crops - A study using UAVs

Adimara B. Colturato

Objective

• Comparison between:▫ Direct methods -

counting diseased plants and quantification of the percentage of injured tissue by pathogens

▫ Indirect methods - analysis of reflectance at different wavelengths (multispectral analysis) making use UAV's and image processing.

Pathologies considered

Tip drought

Rust

Ceratocystis wilt

Bronze bug

Objective

• The spectral signatures produced will be used in the design of specific low cost multispectral sensors that can be embedded in UAVs for the automatic mapping of each problem.

Computer Network Virtualization: An

approach considering mobility and

georeferencing

Paulo Henrique Moreira Gurgel

Difficulties in the study of computer

networks

• How to study computer networks?

▫ Routing protocols? (RIP, OSPF, EIGRP)

▫ How to verify if the message was really sent from a machine to another one?

▫ How to test a distributed application without the final environment?

Visiting a network laboratory

Scenario Sample

Virtualization x Simulation

• Virtualization as a solution

▫ You can go further

▫ Not restricted by simulation rules

Cisco Packet Tracer

Netkit Tool

Mobile Networks

• More protocols and equipments

▫ Ad-hoc networks

▫ Wireless Routers

▫ GPRS, GSM, 3G, 4G, etc.

▫ GPS

Master Degree Project

• The actual tool does not supports mobility.

▫ Need of mobile devices

▫ Use of embedded devices special virtual machines

Structural Diagram

Draft 1

Draft 2

Thank you!

trabalhos em desenvolvimento no lsec

Education