Build an intersection traffic light using the led, Electrical Engineering

Assignment Help:

Build an intersection traffic light using the LED's as in the diagram below

1689_Build an intersection traffic light.png

Day

Use the LED's on the trainer (port 11)

Main Street and Side Street alternate.

Main Street is green for 6 seconds, yellow for 2 seconds (Side Street is red while Main Street is green and yellow (8 seconds).

When Main Street is red, Side Street is green for 6 seconds, yellow for 2 seconds.

Night

Bit D0 of the dip switch controls Day and Night. (port 12)

Day is a logic 0 on Bit D0 of the dip switch

Night is a logic 1 on Bit D0 of the dip switch

Main Street is green unless a car is detected on the Side Street.

Bit D1 of the dip switch controls a car on Side Street.

When Bit D1 toggles (changes from its previous state), a car is present on Side Street.

 

For the 2 and 6 second delay, use a ½ second loop program as the core subroutine.

 

TRAFFIC LIGHT FLOW CHART

416_Build an intersection traffic light 2.png

 

 

**********************************************************

************ MAIN ROUTINE (PARTIAL) *************

**********************************************************

 

Label           Nmem  Operand          Comments

 

start              LXI         SP XX,XX      ;set the stack

dmaingrn    CALL     maingrn         ;call main street green light, side red

                     CALL     6 sec delay

dmainyel     CALL     mainyel          ;call main street yellow light, side red      

                     CALL     2 sec delay

dsidegrn     CALL     sidegrn           ; call side street green light, main red etc.

 

nite              IN           $12                 ;check the dip switches

                     RAR                              ;rotate the day-nite bit in to the cy flag

                     JNC       maingrn         ;if 0, still day and goes to day routine,

                                                            ;if 1 falls through to "Call Main Greem"

                     CALL     maingrn         ;returns to "Car at Side Street"

                     IN           12                   

                     RAR

                     RAR

                     CC         mainyel          ;make main yellow

                     JMP       nite

 

************************************************************************

********************** NIGHT SUBROUTINE ***********************

************************************************************************

 

                     CALL     maingrn         ;make the main street green

                     IN           12                    ;check side street

                     RAR                              ;is lsb still a 1 (nite)

                     RAR     

                     JC          mainyel          ;make main street yellow

 

************************************************************************

********************* LIGHT SUBROUTINES **********************

************************************************************************

 

Label           Nmem  Operand          Comments

maingrn      MVI A    %11011011   ; main green, side red

                     OUT       $11

                     CALL     6sec                ; the the 6 sec subroutine

                     RET

etc

********************************************************************************************

******************************** 6 SEC DELAY*******************************************

********************************************************************************************

Refer to the OPEN AND CLOSED LOOP and EXTENDING THE LOOP experiments.

 

********************************************************************************************

******************************** 2 SEC DELAY*******************************************

********************************************************************************************

Refer to the OPEN AND CLOSED LOOP and EXTENDING THE LOOP experiments.

 

Use the following memory locations for each subroutine:

 

MAIN ROUTINE                           $8000            

MAIN GREEN                              $8100            

MAIN YELLOW                            $8200

SIDE GREEN                              $8300

SIDE YELLOW                            $8400

6 SECOND DELAY                      $8500

2 SECOND DELAY                      $8600

HALF SECOND DELAY                 $8700                        

 

Put the MAIN ROUTINE on a separate listing sheet label it MAIN ROUTINE.

Put the MAIN GREEN, MAIN YELLOW on separate listing sheet label it, MAIN GREEN AND YELLOW.

Put the SIDE GREEN and SIDE YELLOW on a separate listing sheet, label it SIDE GREEN AND YELLOW.

Put the HALF SECOND DELAY on a separate listing sheet, label it HALF SECOND DALAY.

Put the 6 and 2 SECOND DELAY routines on a separate listing sheet, label it 2 AND SECOND DELAYS.


Related Discussions:- Build an intersection traffic light using the led

Compute the turns ratio and the winding current ratings, Q. A transformer i...

Q. A transformer is rated 10 kVA, 220:110 V (rms). Consider it an ideal transformer. (a) Compute the turns ratio and the winding current ratings. (b) If a 2-load resistance

Show limitations of microprocessor-based control systems, Q. Show limitatio...

Q. Show limitations of microprocessor-based control systems? Practical limitations of microprocessor-based control systems stem from the following considerations: • Finite-w

Use of cro for frequency measurement, Q. Explain the use of CRO for frequen...

Q. Explain the use of CRO for frequency measurement.   Measurement of frequency: The frequency of the periodic signals is easily measured with a CRO. The frequency of a si

Induction motor, A 100hp,460v,8pole,60hz,star connected 3phase IM runs at 8...

A 100hp,460v,8pole,60hz,star connected 3phase IM runs at 891rpm under full load what is the speed of the rotor field relative to i)rotor structure ii)stator rotating field

Single Phase Induction Motor, How do I connect a Capacitor on the machine i...

How do I connect a Capacitor on the machine if it has a start mechanism

Determine the equivalent resistance of circuit, Determine the equivalent re...

Determine the equivalent resistance of circuit: Determine the equivalent resistance of network across the source terminals and find the current drawn from the source.

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Determine the armature current of synchronous generators, Two three-phase, ...

Two three-phase, 6.6-kV, wye-connected synchronous generators, operating in parallel, supply a load of 3000 kWat 0.8 power factor lagging. The synchronous impedance per phase ofmac

Signals and spectral analysis, Q. Signals and spectral analysis? Figure...

Q. Signals and spectral analysis? Figure shows the functional block diagram of a signal-processing system. The information source may be a speech (voice), an image (picture), o

Logistical management - gis applications, Logistical management - Gis appli...

Logistical management - Gis applications: Using GIS also allows a radical improvement in daily work management practices - such as planning new installations, scheduling opera

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd