Maung Aung Naing

1
Intelligent Programmable
Traffic Light Controller
Project Presentation
Presented by
GROUP
Maung Aung Naing Maung Nay M Aung Than Khar Chin
ECE 111
University of California, San Diego

Spring 2005
2
Specification

• Intelligent System
• Red-Red condition before any light turns green
• Always green on main road if no traffic at all
• Change to other state if no more traffic on
  current lane even though timer is not up yet
• Stay green if there is only traffic on current
  lane (ignoring max green timer)
• Every state can go to any state
• No more unnecessary green
• Prioritized and Balanced System
• Right Turn Lights
• Operate as regular hour in weekend

3
Specification (cont.)

• Programmable System
• Ability to program Rush Hour (max 2 sets)
• Ability to program different maximum green timer
  for each state between rush hour and regular hour
  
• Pedestrian Lights Control System
• Pedestrian Lights for all 4 Crosswalks
• Always Red unless pedestrian request
• 3 types of pedestrian light signal (Red,
  Blinking-Red White)
• 7 segments countdown display

4
Specification (cont.)

• Emergency vehicle Control System
• Emergency vehicle detection sensors for all 4
  directions
• Green light on the direction where emergency
  vehicle is heading (all other lights are red)
• Priority Control System if more than one
  Emergency Vehicles are coming from different
  directions
• Override Priority Memory if Emergency Vehicle
  does not follow Traffic Control
• Assumption
• Emergency vehicle detection sensors can detect
  ahead to get enough time for traffic control.

5
Specification (cont.)

• Red Light Violation Control System
• 8 sensors to detect red light crossing vehicles
• 4 cameras
• Malfunction Control System
• Flashing red light if malfunction or power
  breakdown
• Assumption
• Temporary Backup Power is available .

6
Initial Behavior of the FSM

• Every state can go into any other states.
• Challenge All states need to have equal chances
  when traffic exists.

7
Traffic Control State Diagram (Scenario
1)Start from ?? states (state encoding 11)
1
4
6
3
2
5
8
Traffic Control State Diagram (Scenario 1)
6
9
Traffic Control State Diagram (Scenario
2)Start from ?? states (state encoding 00)

• If the above conditions doesnt hold when timer
  up or no car on ?? , change into other direction.

• When timer hasnt up yet, cars on one of the ??
  but not both

• 1b. No car on ? but cars on ? and (no pedestrian
  crossing or pedestrian crossing only at the
  crosswalk correspond to ?)
• 2b. No car on ? but cars on ? and (no pedestrian
  crossing or pedestrian crossing only at the
  crosswalk correspond to ?)

10
Traffic Control State Diagram (Scenario 2)
11
Traffic Control State Diagram (Scenario
3)Start from ?? states (state encoding 01)

• When timer up or no car on ? lane

• 1a. When theres cars on both ??
• 1b. Not condition 2 and cars on ? or
  corresponding pedestrian crosswalk request
• 1c. Not condition 2 and a pedestrian is
  crossing
• 1d. Not condition 2 and car on ? and timer
  hasnt up yet
• 2. Not condition 1a and cars on both ?? lanes
  and pedestrian is not crossing
• If the above conditions dont hold, change to
  other direction.

• When timer up on ?? or no car on both ?? lanes

• 3a. no pedestrian crossing and car on ? lane
• 3b. Pedestrian crossing that correspond to ?
  and car on ? lane

• 4a. When timer up on ?? or no car on both ??
  lanes and no pedestrian is crossing, change into
  other direction.
• 4b. If theres no car on other direction, go
  back to one of the previous state in current
  direction (But scenario change to make sure the
  state it is going is the last state so that it
  can change into other direction immediately.)

12
Traffic Control State Diagram (Scenario
4)Start from ?? states (state encoding 10)

• When timer up or no car on ? lane

• 1a. When theres cars on both ??
• 1b. Not condition 2 and cars on ? or
  corresponding pedestrian crosswalk request
• 1c. Not condition 2 and a pedestrian is
  crossing
• 1d. Not condition 2 and car on ? and timer
  hasnt up yet
• 2. Not condition 1a and cars on both ?? lanes
  and pedestrian is not crossing
• If the above conditions dont hold, change to
  other direction.

• When timer up on ?? or no car on both ?? lanes

• 3a. no pedestrian crossing and car on ? lane
• 3b. Pedestrian crossing that correspond to ?
  and car on ? lane

• 4a. When timer up on ?? or no car on both ??
  lanes and no pedestrian is crossing, change into
  other direction.
• 4b. If theres no car on other direction, go
  back to one of the previous state in current
  direction (But scenario change to make sure the
  state it is going is the last state so that it
  can change into other direction immediately.)

13
Complete State Machine

• Since the opposite direction has the same
  behavior, we can optimized into 4 states for
  normal operation mode.
• Each direction can behave differently because
  they will have different maximum green timers.
• Pedestrian lights will be dependent on Traffic
  Control States and vice versa.

14
Pedestrian State Diagram
IDLE
Ped12
Ped1
Ped2

• Note Transition from Idle to any other states
  will be controlled by Traffic Control States.
• Return to idle state will be dependent on
  pedestrian timer.

15
Block Diagram (Xilinx)
16
Block Diagram
Day (20)
Hour (30)
Minute (50)
AM/PM
Data_ready
Rush Hr Switch1
Rush Hr Switch2
(10)
(10)
Reset
CLK
(10)
(50)
(50)
4 Left-Turn Lights
(10)
Green Timer (50)
4 Right-Turn Lights
(10)
(10)
4 Pedestrian Lights
Fuse
(0)
4 Pedestrian Countdown Displays
(130)
4 Ped Signals
(30)
4 Emergency Sensors
Ped timer 2
(30)
17
North Cross Walk
South Lights
East Lights
West Cross Walk
East Cross Walk
West Lights
North Lights
West Left-Turn Light
South Cross Walk
West Straight Light
West Right-Turn Light
South Pedestrian Light
18
Demo 1 FRIDAY 346 AM ( Installation Done
Testing time)

• Setting
• Turn on Circuit-Breaker
• Reset the system
• Set Current Time and Day
• ( 346 AM Friday)
• Set Rush Hr 1 start end time
• ( 730 AM 1000 AM )
• Set Rush Hr 2 start end time
• ( 330 PM 615 PM )
• Turn on Rush Hr Switches
• Use default max green timers
• Condition
• No car
• No pedestrian
• Demo
• Always GREEN on default E-W direction (Note
  Default Main Rd)
• (Straight Lights Right-Turn Lights)

19
Demo 1
Programmable
Circuit-Breaker Turn On
Set current time
reset
Set Rush Hr1
Set Rush Hr2
Turn on Rush Hr Switches
Set Day
Green on Default Main Rd
20
Demo 2 FRIDAY 400 AM (Default Main Rd
unnecessary to check Pedestrian timer if possible
7 Segment Countdown for Pedestrian Cross Walk

• Condition
• No car at all
• Pedestrian Request at South Cross Walk
• Demo
• Always GREEN on default E-W Road
• (Straight Lights Right-Turn Lights)
• Only South Cross Walk Pedestrian Light is turned
  ON (Note independence from North Cross Walk) (15
  seconds per cross)
• 7 Segment Countdown Display for South Cross Walk
  Pedestrian
• ( 15 -gt 14 -gt . . . -gt 01-gt off )

21
Demo 2
South Cross Walk Pedestrian Request
Green on Default Main Rd
South Cross Walk Light is turned ON
7 Segment Display for Pedestrian (15
seconds/cross)
22
Demo 2
South Cross Walk Pedestrian Request
Green on Default Main Rd
South Cross Walk Light is turned ON
7 Segment Display for Pedestrian (15
seconds/cross)
23
Demo 3 FRIDAY 430 AM (Independent Cross Walks
Red-Red Condition Default Main Rd)

• Condition
• No car at all
• Pedestrian Request at East Cross Walk
• Later, Pedestrian Request at West Cross Walk
• Demo
• Turn YELLOW RED on default main Road
• Turn GREEN on S-N direction
• East Cross Walk Pedestrian Light is turned ON
  (Note Independence from West Cross Walk)
• (15 seconds per cross)
• Later, West Cross Walk Pedestrian Light is turned
  ON (Note Independence from East Cross Walk) (15
  seconds per cross)
• GREEN back on default main road

24
Demo 3
Independent Cross Walk
East Cross Walk Pedestrian Request
West Cross Walk Pedestrian Request Later
Green on S-N Direction
RED-RED Condition
West Cross Walk Light is turned ON Later
East Cross Walk Light is turned ON
7 Segment Display for Pedestrians (15
seconds/cross)
Green back to Default Main Rd
25
Demo 4 FRIDAY 530AM(balanced system
Intelligence Default Main Rd)

• Condition
• One car is coming on East Left-Turn lane
• Later, cars on South
• South Left-Turn lanes
• Demo
• Turn YELLOW RED on default
• E-W Road
• Turn GREEN on E-W Left-Turn lanes (Note can go
  Backward)
• Go to other state without waiting max green timer
  since no more cars on current state
• Turn GREEN on South through South Left-Turn
  lanes (Note can go to any state of other
  direction)
• GREEN back on default main road without waiting
  max green timer since no more cars on current
  state

26
Demo 4 FRIDAY 530AM(balanced system
Intelligence Default Main Rd)

• Condition
• One car is coming on East Left-Turn lane
• Later, cars on South
• South Left-Turn lanes
• Demo
• Turn YELLOW RED on default
• E-W Road
• Turn GREEN on E-W Left-Turn lanes (Note can go
  Backward)
• Go to other state without waiting max green timer
  since no more cars on current state
• Turn GREEN on South through South Left-Turn
  lanes (Note can go to any state of other
  direction)
• GREEN back on default main road without waiting
  max green timer since no more cars on current
  state

27
Demo 4 FRIDAY 530AM(balanced system
Intelligence Default Main Rd)

• Condition
• One car is coming on East Left-Turn lane
• Later, cars on South
• South Left-Turn lanes
• Demo
• Turn YELLOW RED on default
• E-W Road
• Turn GREEN on E-W Left-Turn lanes (Note can go
  Backward)
• Go to other state without waiting max green timer
  since no more cars on current state
• Turn GREEN on South through South Left-Turn
  lanes (Note can go to any state of other
  direction)
• GREEN back on default main road without waiting
  max green timer since no more cars on current
  state

28
Demo 4
Balanced system Every state can go to any other
state
Car on East Left-Turn lane
Car on South Straight lane
Car on South Left-Turn lane
11
11
South straight South Left-Turn Lights South
Right-Turn West Right-Turn Lights are turned
green
GREEN on default E-W direction
East West Left-Turn Lights South North
Right-Turn Lights are turned green (balance)
Green back on Default Main Rd
29
Demo 5 FRIDAY 550 AM (no more unnecessary
GREEN)

• Condition
• No car in E-W direction
• Cars on all S-N lanes
• Demo
• Rotate in S_N Straights Lights S-N Left-Turn
  Lights
• Do not go to E-W direction since there is no car
  on that side
• (Note No more unnecessary GREEN)
• Bonus
• South North Right-Turn Lights will be GREEN
  when S-N Straight Lights are GREEN
• East West Right-Turn Lights will be GREEN when
  S-N Left-Turn Lights are GREEN

30
Demo 5 FRIDAY 550 AM (no more unnecessary
GREEN)

• Condition
• No car in E-W direction
• Cars on all S-N lanes
• Demo
• Rotate in S_N Straights Lights S-N Left-Turn
  Lights
• Do not go to E-W direction since there is no car
  on that side
• (Note No more unnecessary GREEN)
• Bonus
• South North Right-Turn Lights will be GREEN
  when S-N Straight Lights are GREEN
• East West Right-Turn Lights will be GREEN when
  S-N Left-Turn Lights are GREEN

31
Demo 5
Cars on all S-N lanes (no car in E-W lanes)
GREEN on S-N Straight Lights S-N Right-Turn
Lights
no more unnecessary GREEN
GREEN on S-N Left-Turn Lights E-W Right-Turn
Lights
32
Demo 6 FRIDAY 640 AM (unnecessary to wait
Pedestrian timer if possible Intelligence
ignoring max green timer )

• Condition
• Cars are moving on S-N Left-Turn Lanes
• Cars are waiting on E-W through lanes
• Pedestrian Request at North Cross Walk
• Later, no more car on South Left-Turn Lane
• S-N Left-Turn max green timer is up
• Demo
• GREEN on S-N Left-Turn Lights E-W Right-Turn
  Lights
• Go to other direction since timer is up
• (Note no need to go to Straight-Straight
  State to change to other direction. In the other
  word, it can exit from any state of one side)

33
Demo 6 FRIDAY 640 AM (unnecessary to wait
Pedestrian timer if possible Intelligence
ignoring max green timer )

• Condition
• Cars are moving on E-W through Lanes
• North Cross Walk Pedestrian is crossing
• Later, no more car on West Lane cars are
  arriving on East Left-Turn Lane
• Demo
• GREEN on E-W straight Lights E-W Right-Turn
  Lights
• North Cross Walk Pedestrian Light is ON
• Change from E-W Straight Lights to East Straight
  East Left-Turn Lights without waiting
  Pedestrian Crossing and max green timer
• (Note North Pedestrian still can cross)

34
Demo 6 FRIDAY 640 AM (unnecessary to wait
Pedestrian timer if possible Intelligence
ignoring max green timer )

• Condition
• Cars are moving on East straight and East
  Left-Turn Lanes
• North Cross Walk Pedestrian is still crossing
• Later, no more car on East through and East
  Left-Turn Lanes
• Cars are waiting on all North Lanes
• Demo
• GREEN on East straight East Left-Turn Lights
  East Right-Turn and South Right-Turn Lights
• North Cross Walk Pedestrian Light is still ON
  until 15 sec timer is up
• Change from East Straight East Left-Turn Lights
  to North Straight North Left-Turn Lights
• (Note can exit from any state of one side
  and go to any state of the other side)

35
Demo 6 FRIDAY 640 AM (unnecessary to wait
Pedestrian timer if possible Intelligence
ignoring max green timer )

• Condition
• Cars are moving on all North Lanes
• No cars on all other lanes
• Demo
• GREEN on North straight North Left-Turn Lights
  North Right-Turn and East Right-Turn Lights
• Stay GREEN on current lanes since there are cars
  on current lanes and no cars on all other lanes
  (ignoring max green timer)
• (Note reduce travel time and it makes a
  lot of sense)

36
Demo 6
Every state can go to any other state
Cars are arriving on East Left-Turn Lane
Cars on S-N Left-Turn lanes
North Pedestrian Request
Cars are arriving on E-W through Lanes
Cars are arriving on North Straight Lane
GREEN on East Straight, East Left-Turn, E S
Right-Turn Lights
GREEN on E-W Straight Lights E-W Right-Turn
Lights
Stay GREEN on N Straight N Left-Turn, N
Right-Turn E Right-Turn Lights (ignoring max
green timer)
North Pedestrian Light
GREEN on S-N Left-Turn Lights E-W Right-Turn
Lights
37
Demo 7 FRIDAY 729 AM (Rush Hr Start Red
Light Violation Control Camera Action)

• Condition
• Cars on all Lanes
• One car crosses RED light some cars cross
  YELLOW lights
• 1 more minute to Rush Hr
• Demo
• Some West Left-Turn cars are crossing YELLOW
  Light and Camera does not take action
• Next, Some West through cars are crossing YELLOW
  light and Camera does not take action
• East through car crosses RED light and Camera
  takes Action
• (Note camera action is very sharp)
• 730AM, then Rush Hour Mode is turned ON

38
Demo 7
Rush Hr Control internal clock (Hr, Min, Sec,
AM)
RED Light Violation of East through car
730AM Rush Hour Mode is turned ON
Friday
Camera Action for RED Light Violation
Next, Some West through cars are crossing YELLOW
light and Camera does not take action
Some West Left-Turn cars are crossing YELLOW
Light and Camera does not take action
Camera Rush Hr Control
39
Demo 7
Rush Hr Control internal clock (Hr, Min, Sec,
AM)
RED Light Violation of East through car
730AM Rush Hour Mode is turned ON
Friday
Camera Action for RED Light Violation
Next, Some West through cars are crossing YELLOW
light and Camera does not take action
Some West Left-Turn cars are crossing YELLOW
Light and Camera does not take action
Camera Rush Hr Control
40
Demo 8 FRIDAY 959 AM (Rush Hr End Emergency
Vehicle Control))

• Condition
• 1 minute to go back to Regular Hr
• E-W lanes are going to empty in a few minutes
  More Cars are on N-S through North Left-Turn
  lanes
• 1st Emergency Vehicle from West
• 2nd Emergency Vehicle from South
• 3rd Emergency Vehicle from East
• Demo
• 1000AM, then Rush Hour Mode is turned OFF
• Later, Emergency Vehicles are coming
• Change North through North Left-Turn Lights to
  YELLOW RED
• West through Light is turned GREEN by 1st
  priority

3
1
2
41
Demo 8 FRIDAY 959 AM (Rush Hr End Emergency
Vehicle Control))

• Condition
• 1 minute to go back to Regular Hr
• E-W lanes are going to empty in a few minutes
  More Cars are on N-S through North Left-Turn
  lanes
• 1st Emergency Vehicle from West
• 2nd Emergency Vehicle from South
• 3rd Emergency Vehicle from East
• Demo
• Then, East Emergency Vehicle turns Right without
  waiting GREEN Light that is 3rd priority
• South through Light is turned GREEN by 2nd
  priority
• No GREEN for 3rd priority Emergency Vehicle since
  it is not there anymore
• (Note Priority system for Emergency
  Vehicle Control, but can override the priority
  memory if the Emergency Vehicle does not follow
  Traffic Light Control )

3
2
42
Demo 8 FRIDAY 959 AM (Rush Hr End Emergency
Vehicle Control))

• Condition
• 1 minute to go back to Regular Hr
• E-W lanes are going to empty in a few minutes
  More Cars are on N-S through North Left-Turn
  lanes
• 1st Emergency Vehicle from West
• 2nd Emergency Vehicle from South
• 3rd Emergency Vehicle from East
• Demo
• When it is done with Emergency Vehicle control
  system, the system will find which state to
  start. It will give GREEN Lights to the lanes
  with Cars

2
43
Demo 8
Emergency Rush Hr
3rd Emergency Vehicle from East (does not wait
GREEN traffic control)
2nd Emergency Vehicle from South
1st Emergency Vehicle from West
1000AM Rush Hour Mode is turned OFF
GREEN for West Emergency Vehicle
After Emergency Control, it will go to state with
cars
Reduce YELLOW timer for Emergency Vehicle Control
No GREEN for East Emergency Vehicle
GREEN for South Emergency Vehicle
44
Demo 9 FRIDAY 1215PM (rotate in 4main states
if cars on all lanes)

• Condition
• Cars on all Lanes
• Demo
• Rotate in 4 main states which are the following
• S-N Straight-Straight
• S-N Left Turn-Turn
• E-W Straight-Straight
• E-W Left Turn-Turn

45
Demo 9 FRIDAY 1215PM (rotate in 4main states
if cars on all lanes)

• Condition
• Cars on all Lanes
• Demo
• Rotate in 4 main states which are the following
• S-N Straight-Straight
• S-N Left Turn-Turn
• E-W Straight-Straight
• E-W Left Turn-Turn

46
Demo 9
GREEN on S-N Straight Lights S-N Right-Turn
Lights
GREEN on E-W Left-Turn Lights S-N Right-Turn
Lights
GREEN on S-N Left-Turn Lights E-W Right-Turn
Lights
GREEN on E-W Straight Lights E-W Right-Turn
Lights
Rotate in 4 main states if cars on all lanes
47
Demo 10 FRIDAY 223PM (STOP sign if Malfunction
or Power Breakdown Intelligence)

• Condition
• Cars on all Lanes
• Pedestrian Request at South Walk
• Power Breakdown for 10 minutes
• Pedestrian Request at East Walk
• Cars are moving by STOP sign priority
• Only cars left on South through and South
  Left-Turn lanes when power is back
• Demo
• All lights become flashing RED pedestrian
  light changes to RED when Malfunction or Power
  Breakdown
• (Assume There is Temporary Backup Power
  Supply)
• Pedestrian Request does not work during
  Malfunction
• When power is back, the system will find which
  state to start. It will give GREEN Lights to the
  lanes with Cars

48
Demo 10
When power is back, the system will find which
state to start. It will give GREEN Lights to the
lanes with Cars (GREEN on South through South
Left-Turn Lanes)
Pedestrian Request does not work during
Malfunction
Flashing RED if Malfunction or Power Breakdown
RED-RED condition before Normal Mode
Pedestrian Lights change to RED if Malfunction
STOP sign Red-Red condition Intelligence
49
Demo 11 FRIDAY 230PM (Programmable GREEN
Timers)

• Demo
• Setting Testing Max Green timers

UCSD Express
50
Demo 11a
E-W Left Turn-Turn
W Straight-Left Turn
E Straight-Left Turn
E-W Straight-Straight
For Rush Hr
S-N Left Turn-Turn
N Straight-Left Turn
S Straight-Left Turn
S-N Straight-Straight
OFF Mode
E-W Left Turn-Turn
S-N Straight-Straight
W Straight-Left Turn
S Straight-Left Turn
E Straight-Left Turn
N Straight-Left Turn
S-N Left Turn-Turn
E-W Straight-Straight
For Regular Hr
Programmable Max GREEN Timer
51
Demo 11b Friday 230PM Regular Hr
3 seconds for S-N Straight-Straight
6 seconds for E-W Straight-Straight
3 seconds for E-W Left Turn-Turn
6 seconds for S-N Left Turn-Turn
Programmable Max GREEN Timer
52
Demo 11c Friday 330PM Rush Hr
4 seconds for E-W Straight-Straight
5 seconds for S-N Straight-Straight
Evening Rush Hr
3 seconds for E-W Left Turn-Turn
6 seconds for S-N Left Turn-Turn
Programmable Max GREEN Timer
53
Demo 12 FRIDAY 1159PM (no more unnecessary
Green Day change )

• Condition
• Cars on all Left-Turn lanes
• No cars on all through-Lanes
• One East Cross Walk Pedestrian Request
• Demo
• Rotate in S-N Left Turn-Turn Lights and E-W Left
  Turn-Turn Lights
• Not necessary to go to Straight-Straight State to
  change Direction
• (Note No more unnecessary GREEN)
• Go to S-N Straight-Straight State for a while
  since there is one East Cross Walk Pedestrian
  Request

54
Demo 12
Go to S-N Straight-Straight State just for East
Pedestrian
GREEN on E-W Left Turn-Turn lanes
Saturday start here!
Rotate in Turn-Turn lanes since no car on through
lanes (no more Unnecessary GREEN) Day change
GREEN on S-N Left Turn-Turn lanes
55
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Stay green on E-W lanes when theres no car on
  other lanes (Ignore max green timer)
• A pedestrian wants to cross from east cross walk

56
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• A pedestrian wants to cross from east cross walk
• Give green to S-N through lanes to let pedestrian
  cross

57
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Give green to S-N through lanes to let pedestrian
  cross
• Emergency coming in from South lane
• Cars waiting on E-W through lanes, and East left
  turn lanes

58
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Give green to E through lane and East left turn
  lanes

59
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Give green to E through lane and East left turn
  lanes
• Change to E-W through lane when timer up

60
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Give green to E through lane and East left turn
  lanes
• Change to E-W through lane when timer up
• Back to E through lane and East left turn lanes
  since theres no car on S-N direction
• Cars coming in from South through and South Left
  turn lanes

61
Demo 13 Saturday 729 AM (No Rush Hr
Emergency Vehicle Balance System)

• Condition
• Cars on only E-W through lanes
• One Cross Walk request from East side
• Emergency come in from south lane
• Cars on E-W through lanes and on East Left turn
  lanes
• Cars come in later on South through and South
  Left turn lanes
• Demo
• Back to E through lane and East left turn lanes
  since theres no car on S-N direction
• Cars coming in from South through and South Left
  turn lanes
• Change to South through and South Left turn lanes
  when E through and East Left turn lanes timer is
  up (ignore which state E-W direction are in)

62
Demo 13
63
Demo 13 No Rush Hour on Weekend
730 AM Saturday No Rush Hour on weekend!!!!
64
Logical Synthesis

• Macro Statistics
• FSMs 6
• Adders/Subtractors 9
• Registers 263
• Comparators 31
• Multiplexers 27
• Priority Encoders 2
• Xors 10

65
Physical Synthesis

• Device utilization summary
• Selected Device 2s200fg256-6 (Spartan 2)
• Number of Slices 2183 out of
  2352 92
• Number of Slice Flip Flops 368 out of
  4704 7
• Number of 4 input LUTs 3942 out of
  4704 83
• Number of bonded IOBs 150 out of
  180 83
• Number of GCLKs 1 out
  of 4 25
• Timing Summary
• Speed Grade -6
• Minimum period 47.521ns
• Maximum Frequency 21.043MHz
• Minimum input arrival time before clock 59.911ns
  
• Maximum output required time after clock
  12.152ns
• Maximum combinational path delay 9.647ns

66
Floor Plan
67
Workload

• Fighting and arguing 3 x 10 Hours
• Specification and design 3 x 26 Hours
• VHDL development 3 x 50 Hours
• Testing and Debugging 60 Hours
• Synthesis 2 Hours
• Final Presentation 25 Hours
• ------------------------------------
• Total 345 Hours

68
Challenges

• Designing State Machine
• To implement that every state can go to any other
  state
• To avoid unnecessary green
• To implement prioritized and balanced system
• To avoid sticking in one direction

69
Sale Dept
33440000 Earth Blvd.Galaxy Way City, Jupiter
2300122Toll Free 999-ACE-GRoUPFax Free
999-FAX-TO-ACE Email Free buynow_at_ace.group.commm
Technical Support 911