Cell- -based Architecture for based Architecture for Cell - PowerPoint PPT Presentation

Cell- -based Architecture for based Architecture for Cell Adaptive Wiring Panels: A First Adaptive Wiring Panels: A First Approach Approach Victor Murray 1 1 , Daniel Llamocca 1 1 , Yuebing Jiang 1 1 , Marios Pattichis 1 1 James Lyke 2 2 , Stephen Achramowicz , Stephen Achramowicz 2 2 , Keith Avery , Keith Avery 2 2 James Lyke 1 University of New Mexico 1 University of New Mexico 2 2 Air Force Research Laboratory Air Force Research Laboratory

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 2

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 3

What is a wiring harness? • Packaging hierarchy from transistor to system • Wires dominate the content of electronics in systems • Harnesses are wires that form Level 4 connections 27 April 2011 4

5 Real World Example – Tacsat 2 27 April 2011

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 6

Advantages • Dramatic time reduction – Reduces weeks and months to minutes • Flexibility – Accommodate last minute changes – Fixing errors after the fact • Diagnostic enhancement – Form temporary probes without dismantling system • Robustness – Ability to route around damage – Ability to make self-healing 27 April 2011 7

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 8

Adaptive wiring concept A A C C B B A C A C B B programmed blank 9

10 B C A Segmented (extended) adaptive panel B A C

11 B C A Temporary probes can be inserted B A C V

Fault management Faulty connection A C B B C A New good connection 12

13 Physical Embodiment

14 Placement and routing (two modules) D D E E

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 15

Challenges • Bistable / multistable / persistent, low-power • Electrical performance – Low resistance – Bandwidth – High-isolation (low crosstalk) • Hot-switching • Compact • Low-cost 27 April 2011 16

Wiring Supply / Demand Demand Case 3 (wiring starved, Quantity won’t work) Supply (ex.) Demand (OK) Demand Case 2 Case 1 Over ‐ supply (wasteful) Length 27 April 2011 17

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 18

Simplified Depiction Unplaced module Placed module Scalable adaptive wirin panel Cells Cell Cell Management Unit 19

“Unit cell” Unit cell Displaced unit cell Power terminal (pin) Signal terminal (pin) Mechanical mounting point 20

Unit cell details “North“ edge “East “ edge Local I2C communications port “West“ edge Routable wiring resources Cell – Surface routing termini module I2C port Cell local processing unit Cell common I2C port “South“ edge 21

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 22

Adaptive Wiring Panel with modules 27 April 2011 23

Interior details of module connections to panel 27 April 2011 24

25 Example Wiring Problem 27 April 2011

Cell Implementation • Cells are self-contained (5cm x 5cm) • Contains local routing (~70 relays) • Communicate using six I2C busses – 4 neighbors (N-E-W-S) (local) – 1 cell-to-module – 1 cell-to-host (global) 27 April 2011 26

Current Hardware (one cell) Top board ( adaptive surface) South cell board 27 April 2011 27

Cell Management Unit • Manages global panel of cells – Computes connections – Manages cell and modules – Implements dynamic changes • Implements wiring harness as netlist • Netlist programmed SPICE language • Route algorithms • Graphical User Interface (GUI) simplifies user interaction 27 April 2011 28

29 Cell management Unit 27 April 2011

30 Five cells, two modules 27 April 2011

31 Example Problem 27 April 2011

32 Graphical User Interface 27 April 2011

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 33

Future Work • Increase demo to 64 tiles (8 cells x 8 cells) • Development of MEMS switches (90% reduction in size, weight, and power) • Improved hierarchical routing algorithms • Self-healing demonstrations • Multi-panel manifold • Extension of ideas to three dimensions 27 April 2011 34

Outline • What is a wiring harness? • Why would we want to make it reconfigurable and adaptive? • Basic concept of adaptive wiring harness • Challenges • Cellular architecture for adaptive wiring harness • Current Status • Future Work • Conclusions 27 April 2011 35

Conclusions • Adaptive wiring can have significant advantages over fixed designs (speed, flexibility, robustness) • Adaptive wiring architecture has been described • Cellular version of adaptive wiring harness has been designed and partial panel has been demonstrated • Within next year a full scale version will be available for further study 36

Acknowledgments • Financial support – AFRL Space Vehicles – Air Force Office of Scientific Research (AFOSR/NE) Discovery Challenge Thrust for Reconfigurable Cellular Electronic/Photonic Arrays (Dr Gernot Pomrenke) 27 April 2011 37

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