gsf presentation 1
TRANSCRIPT
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Project Presentation
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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
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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
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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 EmergencyVehicles 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.
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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 .
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Every state can go into any other states.
Challenge: All states need to have equal chances when traffic exists.
E-WS-N
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1a. Not condition 3a and Cars on lanes
2a. Not condition 3a and Cars on lanes
3a. Cars on both
3b. Not condition 1a and 2a and cars on one of or one of the
corresponding pedestrian cross walk
When timer up fromstate or there isnt cars on both .
When timer hasnt up yet, but
1b. No car on but cars on ( or corresponding pedestrian crosswalk) and lanes
2b. No car on but cars on ( or corresponding pedestrian crosswalk) and lanes
If the above conditions doesnt hold when timer up or no car on , change into other direction.
Traffic Control State Diagram (Scenario 1):
Start from states (state encoding = 11)
1
2
3
5
4
6
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Traffic Control State Diagram (Scenario 1):
When timer up on or no car on
4a. car on or corresponding pedestrian crosswalk 4b. car on and timer hasnt up yet
4c. Pedestrian is still crossing
If the above condition doesnt hold when timer up or no car on , change into other direction.
When therere no car or pedestrian waiting 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.)
When timer up on or no car on
5a. car on or corresponding pedestrian crosswalk
5b. car on and timer hasnt up yet
5c. Pedestrian is still crossing
If the above condition doesnt hold when timer up or no car on , change
into other direction.
When therere no car or pedestrian waiting 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.)
6a. When timer up on or no car on
lanes, change into other direction.
6b. If theres no car on other direction, go
back to one of the previous states depending
on sensors.
6c. If theres no car at all, go into default
main road.
1
2
3
5
4
6
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Traffic Control State Diagram (Scenario 2):
Start from states (state encoding = 00) 1
2
3
5
4
6
1a. Not condition 3a and Cars on lanes
2a. Not condition 3a and Cars on lanes
3a. Cars on both
3b. Not condition 1a and 2a and cars on one of
(When timer up from state or there isnt cars on both ) and no pedestrian crossing.
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 )
If the above conditions doesnt hold when timer up or no car on , change into other direction.
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1
2
3
5
4
6
Traffic Control State Diagram (Scenario 2):
(When timer up on or no car on ) and no pedestrian crossing
4a. car on 4b. car on and timer hasnt up yet
If the above condition doesnt hold when timer up or no car on , change into other direction.
When therere no car or pedestrian waiting 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.)
(When timer up on or no car on ) and no pedestrian crossing
5a. car on
5b. car on and timer hasnt up yet
If the above condition doesnt hold when timer up or no car on , change
into other direction.
When therere no car or pedestrian waiting 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.)
6a. When timer up on or no car on
lanes, change into other direction.
6b. If theres no car on other direction, go
back to one of the previous states depending
on sensors.
6c. If theres no car at all, go into default
main road.
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Traffic Control State Diagram (Scenario 3):
Start from states (state encoding = 01)
1
2
3
4
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.)
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Traffic Control State Diagram (Scenario 4):
Start from states (state encoding = 10)
4
2
1
3
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.)
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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.
Initial
Reset Yellow-
Red
Transition
between anystates
Timer up
Emergency
Sensor On
Emergency
Sensor Off
Emergency
Mal-
function
Malfunction On
Malfunction Off
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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.
IDLE
Ped12
Ped1 Ped2
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Rush
Hour
Control
RAM
TrafficControl
Unit
Camera
Control
7seg
display
Decoder
Rush Hr
Set Time Mode (2:0)
Direction
Timers
8 violation Sensors
4 Take picture signals
Input Mode (4:0)
Ped timer 1
4 Straight Traffic Lights
8 Sensors
4 Ped Signals
4 Emergency
Sensors
Fuse
(5:0)
4 Pedestrian Lights
Ped timer 2
(3:0)
(3:0)
(1:0)
(1:0)
4 Pedestrian Countdown
Displays
(0)
(13:0)
Green Timer (5:0)4 Left-Turn Lights
4 Right-Turn Lights(1:0)
(1:0)
(5:0)
(1:0) (1:0)
Day (2:0)Hour (3:0)
Minute (5:0)
AM/PM
Data_ready
Rush Hr Switch1
Rush Hr Switch2
CLK
Reset
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EastLights
WestLights
South Lights
NorthLights
SouthCrossWalk
North Cross Walk
WestCrossW
alk E
astCrossWalk
West Straight Light
West Right-Turn Light
West Left-Turn Light
South Pedestrian Light
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Setting:
Turn on Circuit-Breaker Reset the system
Set Current Time and Day
( 3:46 AM Friday)
Set Rush Hr 1 start & end time
( 7:30 AM 10:00 AM )
Set Rush Hr 2 start & end time( 3:30 PM 6:15 PM )
Turn on Rush Hr Switches
Use default max green timers
Condition:
No car
No pedestrian
Demo:
Always GREEN on default E-Wdirection (Note: Default Main Rd)
(Straight Lights & Right-TurnLights)
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Circuit-Breaker Turn On
reset
Set current time
Set Rush Hr1 Set Rush Hr2
Set Day
Turn on Rush Hr Switches
Green on Default Main Rd
Programmable
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Condition:
No car at all
Pedestrian Request at South CrossWalk
Demo: Always GREEN on default E-W Road
(Straight Lights & Right-TurnLights)
Only South Cross Walk PedestrianLight is turned ON (Note:
independence from North CrossWalk) (15 seconds per cross)
7 Segment Countdown Display forSouth Cross Walk Pedestrian
( 15 -> 14 -> . . . -> 01-> off )
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South Cross WalkPedestrian Request
Green on Default Main Rd
7 Segment Display forPedestrian (15 seconds/cross)
South Cross Walk
Light is turned ON
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South Cross WalkPedestrian Request
Green on Default Main Rd
7 Segment Display forPedestrian (15 seconds/cross)
South Cross Walk
Light is turned ON
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Condition:
No car at all
Pedestrian Request at East CrossWalk
Later, Pedestrian Request at WestCross Walk
Demo:
Turn YELLOW & RED on defaultmain Road
Turn GREEN on S-N direction
East Cross Walk Pedestrian Light isturned ON (Note: Independencefrom West Cross Walk)
(15 seconds per cross)
Later, West Cross Walk PedestrianLight is turned ON (Note:Independence from East CrossWalk) (15 seconds per cross)
GREEN back on default main road
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East Cross WalkPedestrian Request
Green back toDefault Main Rd
7 Segment Display forPedestrians (15
seconds/cross)
East CrossWalk Light is
turned ON
West Cross WalkPedestrian RequestLater
West CrossWalk Light isturned ON
Later
Green on S-NDirection
RED-REDCondition
Independent Cross Walk
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Condition:
One car is coming on East Left-Turnlane
Later, cars on South &
South Left-Turn lanes
Demo:
Turn YELLOW & RED on default
E-W Road
Turn GREEN on E-W Left-Turnlanes (Note: can go Backward)
Go to other state without waiting
max green timer since no more carson current state
Turn GREEN on South through &South Left-Turn lanes (Note: can goto any state of other direction)
GREEN back on default main roadwithout waiting max green timersince no more cars on current state
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Condition:
One car is coming on East Left-Turnlane
Later, cars on South &
South Left-Turn lanes
Demo:
Turn YELLOW & RED on default
E-W Road
Turn GREEN on E-W Left-Turnlanes (Note: can go Backward)
Go to other state without waiting
max green timer since no more carson current state
Turn GREEN on South through &South Left-Turn lanes (Note: can goto any state of other direction)
GREEN back on default main roadwithout waiting max green timersince no more cars on current state
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Condition:
One car is coming on East Left-Turnlane
Later, cars on South &
South Left-Turn lanes
Demo:
Turn YELLOW & RED on default
E-W Road
Turn GREEN on E-W Left-Turnlanes (Note: can go Backward)
Go to other state without waiting
max green timer since no more carson current state
Turn GREEN on South through &South Left-Turn lanes (Note: can goto any state of other direction)
GREEN back on default main roadwithout waiting max green timersince no more cars on current state
B l n d s st m & E st t n t n th st t
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Car on EastLeft-Turnlane
Green back onDefault Main Rd
East & West Left-TurnLights + South & North
Right-Turn Lights areturned green (balance)
GREEN ondefault E-W
direction
Car on SouthStraight lane
Car on SouthLeft-Turn lane
South straight & SouthLeft-Turn Lights + SouthRight-Turn & WestRight-Turn Lights areturned green
11
11
Balanced system & Every state can go to any other state
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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 sincethere is no car on that side
(Note: No more unnecessaryGREEN)
Bonus:
South & North Right-Turn Lightswill be GREEN when S-N StraightLights are GREEN
East & West Right-Turn Lights willbe GREEN when S-N Left-TurnLights are GREEN
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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 sincethere is no car on that side
(Note: No more unnecessaryGREEN)
Bonus:
South & North Right-Turn Lightswill be GREEN when S-N StraightLights are GREEN
East & West Right-Turn Lights willbe GREEN when S-N Left-TurnLights are GREEN
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Cars on all S-Nlanes (no car inE-W lanes)
GREEN on S-N Left-Turn Lights& E-W Right-Turn Lights
GREEN on S-N Straight Lights &S-N Right-Turn Lights
no more unnecessary GREEN
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Condition:
Cars are moving on S-N Left-TurnLanes
Cars are waiting on E-W throughlanes
Pedestrian Request at North Cross
Walk Later, no more car on South Left-
Turn Lane
S-N Left-Turn max green timer isup
Demo:
GREEN on S-N Left-Turn Lights &E-W Right-Turn Lights
Go to other direction since timer isup
(Note: no need to go to Straight-Straight State to change to otherdirection. In the other word, it can
exit from any state of one side)
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Condition:
Cars are moving on E-W throughLanes
North Cross Walk Pedestrian iscrossing
Later, no more car on West Lane &
cars are arriving on East Left-TurnLane
Demo:
GREEN on E-W straight Lights & E-W Right-Turn Lights
North Cross Walk Pedestrian Lightis ON
Change from E-W Straight Lights toEast Straight & East Left-TurnLights without waiting PedestrianCrossing and max green timer
(Note: North Pedestrian still can
cross)
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Condition:
Cars are moving on East straight andEast Left-Turn Lanes
North Cross Walk Pedestrian is stillcrossing
Later, no more car on East through
and East Left-Turn Lanes Cars are waiting on all North Lanes
Demo:
GREEN on East straight & EastLeft-Turn Lights + East Right-Turnand South Right-Turn Lights
North Cross Walk Pedestrian Lightis still ON until 15 sec timer is up
Change from East Straight & EastLeft-Turn Lights to North Straight& North Left-Turn Lights
(Note: can exit from any state ofone side and go to any state of the
other side)
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Condition:
Cars are moving on all North Lanes
No cars on all other lanes
Demo:
GREEN on North straight & NorthLeft-Turn Lights + North Right-Turn and East Right-Turn Lights
Stay GREEN on current lanes sincethere are cars on current lanes andno cars on all other lanes (ignoringmax green timer)
(Note: reduce travel time and itmakes a lot of sense)
Every state can go to any other state Cars are arriving on
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Cars on S-NLeft-Turnlanes
GREEN on S-N Left-Turn Lights& E-W Right-Turn Lights
Cars are arriving onE-W through Lanes
y g y
NorthPedestrianRequest
East Left-Turn Lane
Cars are arriving onNorth Straight Lane
GREEN on E-W Straight Lights& E-W Right-Turn Lights
North
PedestrianLi ht
GREEN on EastStraight, EastLeft-Turn, E &
S Right-TurnLights
Stay GREEN on N Straight &N Left-Turn, N Right-Turn &E Right-Turn Lights
(ignoring max green timer)
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Condition:
Cars on all Lanes
One car crosses RED light & somecars cross YELLOW lights
1 more minute to Rush Hr
Demo:
Some West Left-Turn cars arecrossing YELLOW Light and Cameradoes not take action
Next, Some West through cars arecrossing YELLOW light and Cameradoes not take action
East through car crosses RED lightand Camera takes Action
(Note: camera action is very sharp)
7:30AM, then Rush Hour Mode isturned ON
Rush Hr Control: RED Light
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Friday
Next, Some West through cars arecrossing YELLOW light and Camera
does not take action
Rush Hr Control:
internal clock (Hr, Min, Sec, AM)
Camera & Rush Hr Control
Some West Left-Turn cars arecrossing YELLOW Light and
Camera does not take action
RED LightViolation ofEastthrough car
Camera Actionfor RED LightViolation
7:30AM Rush HourMode is turned ON
Rush Hr Control: RED Light
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Friday
Next, Some West through cars arecrossing YELLOW light and Camera
does not take action
Rush Hr Control:
internal clock (Hr, Min, Sec, AM)
Camera & Rush Hr Control
Some West Left-Turn cars arecrossing YELLOW Light and
Camera does not take action
RED LightViolation ofEastthrough car
Camera Actionfor RED LightViolation
7:30AM Rush HourMode is turned ON
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Condition:
1 minute to go back to Regular Hr
E-W lanes are going to empty in afew minutes & More Cars are on N-Sthrough & North Left-Turn lanes
1st: Emergency Vehicle from West
2nd: Emergency Vehicle from South
3rd: Emergency Vehicle from East
Demo:
10:00AM, then Rush Hour Mode isturned OFF
Later, Emergency Vehicles arecoming
Change North through & NorthLeft-Turn Lights to YELLOW & RED
West through Light is turnedGREEN by 1st priority
1
2
3
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Condition:
1 minute to go back to Regular Hr
E-W lanes are going to empty in afew minutes & More Cars are on N-Sthrough & North Left-Turn lanes
1st: Emergency Vehicle from West
2nd: Emergency Vehicle from South
3rd: Emergency Vehicle from East
Demo:
Then, East Emergency Vehicle turnsRight without waiting GREEN Lightthat is 3rd priority
South through Light is turnedGREEN by 2nd priority
No GREEN for 3rd priorityEmergency Vehicle since it is notthere anymore
(Note: Priority system forEmergency Vehicle Control, but canoverride the priority memory if theEmergency Vehicle does not follow
Traffic Light Control )
2
3
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Condition:
1 minute to go back to Regular Hr
E-W lanes are going to empty in afew minutes & More Cars are on N-Sthrough & 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 EmergencyVehicle control system, the systemwill find which state to start. It willgive GREEN Lights to the lanes with
Cars 2
Emergency + Rush Hr 3rd: Emergency Vehiclefrom East (does not
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GREEN forWest
EmergencyVehicle
Reduce YELLOW timer
for Emergency VehicleControl
1st: EmergencyVehicle fromWest
After EmergencyControl, it will go
to state with cars
10:00AM Rush HourMode is turned OFF
2nd: EmergencyVehicle fromSouth
from East (does notwait GREEN trafficcontrol)
GREEN for SouthEmergency Vehicle
No GREEN for
East EmergencyVehicle
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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
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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
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GREEN on S-N Left-Turn Lights& E-W Right-Turn Lights
GREEN on S-N Straight Lights &S-N Right-Turn Lights
Rotate in 4 main states if cars on all lanes
GREEN on E-W Left-Turn
Lights & S-N Right-Turn Lights
GREEN on E-W Straight Lights &E-W Right-Turn Lights
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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 andSouth Left-Turn lanes when poweris back
Demo: All lights become flashing RED &
pedestrian light changes to REDwhen Malfunction or PowerBreakdown
(Assume: There is TemporaryBackup Power Supply) Pedestrian Request does not work
during Malfunction When power is back, the system will
find which state to start. It willgive GREEN Lights to the lanes withCars
Wh i b k h ill fi d hi h
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STOP sign + Red-Red condition + Intelligence
When power is back, the system will find which state tostart. It will give GREEN Lights to the lanes with Cars(GREEN on South through & South Left-Turn Lanes)
Flashing RED if Malfunctionor Power Breakdown
Pedestrian Request doesnot work during Malfunction
Pedestrian Lights change
to RED if Malfunction
RED-RED conditionbefore Normal Mode
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Demo:
Setting & Testing Max Green timers
UCSD Express
E-W Left Turn-Turn
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Programmable Max GREEN Timer
S-N Straight-StraightS Straight-Left Turn
N Straight-Left Turn
S-N Left Turn-Turn
OFF Mode
E-W Straight-Straight
E Straight-Left Turn
W Straight-Left Turn
E-W Left Turn-Turn
For Regular Hr
E W Left Turn Turn
W Straight-Left Turn
E Straight-Left Turn
E-W Straight-Straight
S-N Left Turn-Turn
N Straight-Left Turn
S Straight-Left Turn
S-N Straight-Straight
For Rush Hr
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3 seconds for S-NStraight-Straight
3 seconds for E-WLeft Turn-Turn
6 seconds for E-WStraight-Straight
6 seconds for S-NLeft Turn-Turn
Programmable Max GREEN Timer
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5 seconds for S-NStraight-Straight
3 seconds for E-WLeft Turn-Turn
4 seconds for E-WStraight-Straight
6 seconds for S-NLeft Turn-Turn
Evening Rush Hr
Programmable Max GREEN Timer
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Condition:
Cars on all Left-Turn lanes
No cars on all through-Lanes
One East Cross Walk PedestrianRequest
Demo:
Rotate in S-N Left Turn-TurnLights and E-W Left Turn-TurnLights
Not necessary to go to Straight-Straight State to change Direction
(Note: No more unnecessaryGREEN)
Go to S-N Straight-Straight Statefor a while since there is one EastCross Walk Pedestrian Request
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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
Go to S-N Straight-StraightState just for East Pedestrian
GREEN on E-W LeftTurn-Turn lanes Saturday start here!
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Condition: Cars on only E-W through lanes
One Cross Walk request from Eastside
Emergency come in from south lane
Cars on E-W through lanes and onEast Left turn lanes
Cars come in later on South throughand South Left turn lanes
Demo:
Stay green on E-W lanes whentheres no car on other lanes(Ignore max green timer)
A pedestrian wants to cross fromeast cross walk
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Condition: Cars on only E-W through lanes
One Cross Walk request from Eastside
Emergency come in from south lane
Cars on E-W through lanes and onEast Left turn lanes
Cars come in later on Souththrough and South Left turn lanes
Demo:
A pedestrian wants to cross fromeast cross walk
Give green to S-N through lanes to
let pedestrian cross
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
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Condition: Cars on only E-W through lanes
One Cross Walk request from Eastside
Emergency come in from south lane
Cars on E-W through lanes and onEast Left turn lanes
Cars come in later on Souththrough and South Left turn lanes
Demo:
Give green to S-N through lanes tolet pedestrian cross
Emergency coming in from Southlane
Cars waiting on E-W through lanes,and East left turn lanes
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
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Condition:
Cars on only E-W through lanes
One Cross Walk request from Eastside
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 andEast left turn lanes
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
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Condition:
Cars on only E-W through lanes
One Cross Walk request from Eastside
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 andEast left turn lanes
Change to E-W through lane whentimer up
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
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Condition:
Cars on only E-W through lanes
One Cross Walk request from Eastside
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 andEast left turn lanes
Change to E-W through lane whentimer up
Back to E through lane and Eastleft turn lanes since theres no caron S-N direction
Cars coming in from South throughand South Left turn lanes
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
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Condition:
Cars on only E-W through lanes
One Cross Walk request from Eastside
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 Eastleft 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 SouthLeft turn lanes when E through andEast Left turn lanes timer is up(ignore which state E-W direction
are in)
Demo 13 :Saturday 7:29 AM(No Rush Hr + Emergency Vehicle + Balance System)
E Cross Walk Request S Emergency coming in
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11
11
GREEN on E-Wthrough lanes
E Cross Walk Request
Green on S-N and E Ped Light S Light Green & Ped Red Immediately
GREEN on E through &E Left Turn lanes
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7:30 AM Saturday
No Rush Hour on weekend!!!!
Demo 13 : No Rush Hour on Weekend
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Macro Statistics
# FSMs : 6
# Adders/Subtractors : 9
# Registers : 263
# Comparators : 31
# Multiplexers : 27
# Priority Encoders : 2
# Xors : 10
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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
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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
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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
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