User Account

All Pages

Programming, Electrical Engineering

Assignment Help:

ELEC 132

COURSEWORK – ADC

This work will be assessed based on program demonstration (during lab sessions) and design. You will also have to submit your c-source codes as word or pdf files through SCOLAR sub-system.
This piece of work contributes 20% towards your total mark.
The final opportunity to demonstrate your program operation is Thursday, March 21.

Introduction

The Digital-to-Analogue Converter (DAC) can be used to perform an Analogue-to-Digital Conversion (ADC) with the aid of a comparator, as explained in Lab 6.


Task1. ADC conversion using RAMP method and P1 output (6 marks).

1.1. Write and test a program which produces an analogue to digital conversion using the RAMP method and outputs the conversion value to the LEDs.
(1 marks)

1.2. Modify the program output to P1 in a way that the LEDs will display the rounded percentage of the full scale output. Since there are 8 LEDs each one represents 12.5%. However, since we want the rounded percentage the LED on the LSB should be illuminated if the voltage is above 6.25% (312mV) and the next LED should be illuminated if the voltage is above 18.75% (937mV) etc…
(2 marks)

1.3. Further modify the program so the output to P1 will include a flashing LED if the percentage is less to illuminate this LED. For example, if the voltage is less than 6.25% of full scale (312mV), LSB will be flushing and the frequency of flashing will increase with increasing the voltage . The next bit (P1.1) will start to flash when the voltage is 12.5% with increasing frequency until fully lit at 18.75%, etc.

(3 marks)


Task 2. Successive Approximation ADC ( 5 marks)

The Ramp method of ADC is simple but can take a long time to complete the conversion. Unlike the RAMP method the successive approximation technique has a fixed conversion time whatever the level of the analogue input. See Lab 6 for details.

?


Write a program to produce analogue to digital conversion using the successive approximation method and output the voltage value into serial port with the accuracy of 1 mV. Try to use bit-wise operators for realising successive approximation.

Task 3. Digital Volt Meter (DVM) (5 marks)

Use any ADC method to simulate a Digital Volt Meter with output to LCD. The upper line of the display should have an appropriate message like “Voltage (mv)” and the bottom line should displays the correct voltage (in millivolts) with the accuracy of 1 mV.

Task 4. Integrated output (4 marks)

Finally, integrate your previous programs to produce all three types of output: to port 1, to serial port and to LCD. The output to serial port should be with the period of 100 ms. Your final program design has to be modulus, therefore, the use of functions will be important.
1

Related Discussions:- Programming

What the voltage gains in the fet amplifier, Q. What the voltage gains in t...

Q. What the voltage gains in the FET amplifier? For common source  Voltage gain=V o /V i = - µRd / Rd + rd where µ is the amplification factor,Rd the drain resistance a

Ac waveform, which ckt. Or components using for irregular ac sine wave ...

which ckt. Or components using for irregular ac sine wave change into pure sine wave.......

Marginal tax rate, Stratos Corporation is a privately held tablet semicondu...

Stratos Corporation is a privately held tablet semiconductor technology firm with bright growth prospects.The past 5 years have seen the firm evolve from a pure startup to a profit

On a scale of one to ten, TRAPS: Give a perfect 10, and you'll seem too sim...

TRAPS: Give a perfect 10, and you'll seem too simple to please. Give anything less than a perfect 10, and he could press you as to where you're being significant, and that road lea

Operation performed by instruction out 47 h, Q. Illustrate the operation p...

Q. Illustrate the operation performed by instruction OUT 47 h, AL. Ans:  It transfers contents of AL to I/O port 47h. Notice that I/O port number appears as 0047h on the 16 b

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

Successive-approximation analog to digital converter, Successive-approximat...

Successive-approximation analog to digital converter This converter, shown in Figure, also contains a D/A converter, but the binary counter is replaced by a successive-approxim

Avalanche breakdown, Avalanche Breakdown: This type of breakdown takes...

Avalanche Breakdown: This type of breakdown takes place when both sides of junction are lightly doped and consequently the depletion layer is large. In this case, the electric

3-phase 120 degree mode vsi , 3-phase  120 0 Mode VSI In 1200 mode ...

3-phase  120 0 Mode VSI In 1200 mode VSI each thyristor  conducts for 1200. At a  time only  thyristor  one form  upper  group  and another  form group will conduct.  Only th

TRANSFORMER, what are the characteristics of transformer?

what are the characteristics of transformer?

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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