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

Explain cwd instructions in 8086 family, Explain CWD instructions in 8086...

Explain CWD instructions in 8086 family with example and their effect on flag. Convert signed word to signed double word: CWD instruction enlarges the sign bit of a word int

Kpi for second stage implementation, KPI for Second Stage Implementation ...

KPI for Second Stage Implementation These KPIs deal along with the quality of the relationship among a supplier and a user (customer). They are significant to potential custom

The city and guild electrical systems design task A and B, The city and gui...

The city and guild electrical systems design task A and 2365-305 Do you have these two assignments to sell ?

Explain multimeter, Explain multimeter A multimeter, or universal instr...

Explain multimeter A multimeter, or universal instrument, may be used to measure voltage, current and resistance.

Reporting requirements for distribution licensees, Reporting Requirements f...

Reporting Requirements for Distribution Licensees Distribution licensees are needs to provide operational reports, commercial reports, financial reports, energy audit reports

Explain telephone hand set and it’s working, Q. Explain Telephone hand set ...

Q. Explain Telephone hand set and it’s working ? A standard telephone set is comprised of a transmitter, a receiver and electrical network for equalization, associated circ

Fiind the magnitudes of the line-to-line voltages, Q. A single-line diagram...

Q. A single-line diagram of a three-phase transformer bank connected to a load is given in Figure. Find the magnitudes of the line-to-line voltages, line currents, phase voltages,

Define temperature coefficient of resistance, Define temperature coefficien...

Define temperature coefficient of resistance. Temperature coefficient of resistance is explained as the change in resistance of a material per ohm per degree change in temperat

Jfet applications, how is it possible to operate Q3 with no dc drain? where...

how is it possible to operate Q3 with no dc drain? where is the dc operating point?

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