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

Counter, up-down counter

up-down counter

Emitter follwer, Ask questertion #Minimum 100 words accepted#

Ask questertion #Minimum 100 words accepted#

Diode circuits, Diode Circuits: Prob. (a) Draw the piecewise linear v...

Diode Circuits: Prob. (a) Draw the piecewise linear volt ampere characteristic of a p n diode. What are the circuit models for the ON state and the OFF state. (b) Determ

Explain working of encoders, Explain working of Encoders? Encoding is t...

Explain working of Encoders? Encoding is the process of forming an encoded representation of a set of inputs, and it is the converse of the decoding operation. An encoder is a

Explain what is doping, What is meant by doping? Doping: Semiconduct...

What is meant by doping? Doping: Semiconductors in its extremely pure form are termed as intrinsic semiconductor such intrinsic semiconductor to which several suitable impur

Explain circuit with capacitive load, Circuit with capacitive load Capa...

Circuit with capacitive load Capacitors which obey the relationship of equation are linear capacitors, since the potential difference among the conductive surfaces is linearly

Find the current by means of mesh-current analysis, For the network shown i...

For the network shown in Figure, find the current delivered by the 10-V source and the voltage across the 3- resistor by means of mesh-current analysis.

Masking - immediate with accumulator instruction , Masking As we know...

Masking As we know the MASJ is used  to cover  some part  of our  face  which  we want to hide  and to  show  other part of the face  which  we want to show. Similarly  the

Calculate the value in ohms of the rotor resistance, The synchronous speed ...

The synchronous speed of a wound-rotor induction motor is 900 r/min. Under a blocked-rotor condition, the input power to the motor is 45 kW at 193.6 A. The stator resistance per ph

Calculating the damping ratio of the system, Consider the following mechani...

Consider the following mechanical system: a) Write a differential equation that describes the motion for this system. b) Take the Laplace transform of this equation and

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