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Trabalhos em desenvolvimento no LSEC

  1. Laboratory of Critical Embedded Systems (LSEC) Supervisor: Profa. Dra. Kalinka R. L. J. C. Branco
  2. A control system focused on minimizing drift - specification of a VTOL Natássya B. F. da Silva
  3. Concepts • UAV (Unmanned Aerial Vehicles) ▫ Critical Embedded System. ▫ Composed by sensors, microprocessors and communication units. ▫ Ground station.
  4. 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.
  5. Concepts • VTOL operation.
  6. Concepts • PID Control (Proportional, Integral and Derivative)
  7. Application Scenario • A manned aircraft is responsible for the pesticide spraying. • VTOL used for direct sensing. • Communication with the manned aircraft. • Minimize the drift.
  8. Objective • To build a control system that allows the VTOL to fly autonomously in its three modes: takeoff, land and cruise.
  9. Tools and Techniques • Model Driven Development. • Simulink and Real-Time Workshop.
  10. Tools and Techniques
  11. Tools and Techniques • X-Plane Simulator
  12. Tools and Techniques • Hardware in the loop
  13. Extending unmanned aircraft systems: specification of a data communication architecture Daniel F. Pigatto
  14. 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.
  15. Reference model for UAV architectures
  16. Reference model for UAV architectures
  17. Service-oriented architectures for complex safety-critical embedded systems: a case study on UAVs Douglas Rodrigues
  18. 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).
  19. 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.
  20. Development of a Plug and Play Mechanism for using Smart Sensors Arrays in UAVs Rayner M. Pires
  21. 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)
  22. Mission-Oriented Sensors Array
  23. SSP Hardware connection Data exchange via SSP/SSI ⁞ Mission accomplishment
  24. SSP Connection and Mission parameters On-the-fly Mission feasibility data Session establishment negotiation exchange •Is it na aircraft? •Is it ready to fly? •What’s the estimated remaining autonomy time? MOSA and UAV •Feasible •Can it fly over the given •Partially feasible exchange data while GPS points? •Unfeasible mission •Can it fly under specific accomplishment speed and height? •Does it have external services? •How can they be invoked?
  25. SSI • It’s a connection middleware • Via of communication between both parts • Enables conversation through SSP
  26. Generation of spectral signatures for detection of pathologies in Eucalyptus crops - A study using UAVs Adimara B. Colturato
  27. 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.
  28. Pathologies considered Rust Ceratocystis wilt Tip drought Bronze bug
  29. 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.
  30. Computer Network Virtualization: An approach considering mobility and georeferencing Paulo Henrique Moreira Gurgel
  31. 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?
  32. Visiting a network laboratory
  33. Scenario Sample
  34. Virtualization x Simulation • Virtualization as a solution ▫ You can go further ▫ Not restricted by simulation rules
  35. Cisco Packet Tracer
  36. Netkit Tool
  37. Mobile Networks • More protocols and equipments ▫ Ad-hoc networks ▫ Wireless Routers ▫ GPRS, GSM, 3G, 4G, etc. ▫ GPS
  38. Master Degree Project • The actual tool does not supports mobility. ▫ Need of mobile devices ▫ Use of embedded devices special virtual machines
  39. Structural Diagram
  40. Structural Diagram
  41. Draft 1
  42. Draft 2
  43. Thank you!