Difference between revisions of "EGR 103/DAQ 2"

From PrattWiki
Jump to navigation Jump to search
 
(41 intermediate revisions by the same user not shown)
Line 1: Line 1:
−
This page contains pictures and graphs related to Laboratory 6 (DAQ 2) of EGR 53.
+
<h1>This is the old page</h1>
 +
You probably want [[Python:DAQ 2]]
 +
 
 +
<!--
 +
This page contains pictures and graphs related to DAQ 2 for [[EGR 103]].  It has been updated for Spring 2018.
 +
 
 +
==Notes ==
 +
 
 +
* As before, if the system seems to not recognize Dev1, try Dev2 instead.
 +
* Here is the web page for MATLAB default plot colors: [https://www.mathworks.com/help/matlab/graphics_transition/why-are-plot-lines-different-colors.html Link]
 +
* [[MATLAB:Flexible Programming]]
 +
 
 +
=== Pauses ===
 +
There are <code>pause</code> commands in the code which will cause the program to...pause - specifically when the program first runs to check the lights.  You will need to hit a key to un-pause the program.  The way to see if the program is paused is to look at the bottom left corner of your MATLAB window - it will tell you if it is paused.
 +
 
 +
=== Graph Labels ===
 +
For this assignment, you do not need labels or titles for graphs.  In a later assignment, you will add them.
  
 
== Circuit for BasicAOutput ==
 
== Circuit for BasicAOutput ==
−
Circuit layout for BasicAOutput.
+
Circuit layout for BasicAOutput - '''You only need the left-most circuit, however'''
 
<center>
 
<center>
 
[[Image:Circuit1.jpg|400px]]
 
[[Image:Circuit1.jpg|400px]]
 
</center>
 
</center>
 
== Circuit for BasicAIO ==
 
== Circuit for BasicAIO ==
−
Circuit layout for BasicAIO (two measurements).
+
Circuit layout for BasicAIO - '''You only need the left-most circuit, however'''
 
<center>
 
<center>
 
[[Image:Circuit2.jpg|400px]]
 
[[Image:Circuit2.jpg|400px]]
Line 13: Line 29:
  
 
== Graph from BasicAIO ==
 
== Graph from BasicAIO ==
−
Graph showing outputs when
+
Graph showing output when
 
<source lang="matlab">
 
<source lang="matlab">
−
Vout0 = 2.5+2.5*sin(2*pi*k/100);
+
Vout = 2.5+2.5*sin(2*pi*k/100);
−
Vout1 = 2.5+2.5*cos(2*pi*k/100);
 
 
</source>
 
</source>
 
That is,
 
That is,
Line 22: Line 37:
 
<math>
 
<math>
 
\begin{align}
 
\begin{align}
−
V_{out,\,0}=2.5+2.5\sin\left(\frac{2\pi k}{100}\right)\\
+
V_{out}=2.5+2.5\sin\left(\frac{2\pi k}{100}\right)
−
V_{out,\,1}=2.5+2.5\cos\left(\frac{2\pi k}{100}\right)
 
 
\end{align}
 
\end{align}
 
</math>
 
</math>
 
</center>
 
</center>
 
<center>
 
<center>
−
[[Image:Circuit2Plot.png|500px]]
+
[[Image:Circuit2PlotX.png|500px]]
 
</center>
 
</center>
  
 
== Circuit for AIO ==
 
== Circuit for AIO ==
−
Circuit layout for AIO (six measurements).
+
Circuit layout for AIO - '''You only need the left-most circuit, however'''
 
<center>
 
<center>
 
[[Image:Circuit3.jpg|400px]]
 
[[Image:Circuit3.jpg|400px]]
 
</center>
 
</center>
 
== Graph from AIO ==
 
== Graph from AIO ==
−
Graph showing outputs from six measurement channels.
+
Graph showing outputs from three measurement channels. Note at the far left that they all start at either exactly -1 V or 0 V!
 
<center>
 
<center>
−
[[Image:VoltagesFigure.png|500 px]]
+
New Colors: Blue Orange Yellow Purple Green Cyan<br>
 +
[[Image:VoltagesFigureRed.png|300 px]]<br>
 
</center>
 
</center>
  
 +
== Codes ==
 +
Pasting codes from PDF files is...a bad idea.  Here are the text versions of some of the codes in the assignment.
 +
 +
=== BasicAOutput.m===
 +
<source lang="matlab">
 +
% Initialize workspace and graph
 +
clear; format short e; figure(1); clf; daqreset;
 +
 +
% Create a session
 +
s = daq.createSession('ni');
 +
 +
% set sample rate
 +
SampleRate = 1000;
 +
s.Rate = SampleRate;
 +
 +
% Add channel 0 to output
 +
chO = addAnalogOutputChannel(s,'Dev1',[0],'Voltage');
 +
 +
% Review card information
 +
s
 +
chO
 +
 +
% Write values to output channel
 +
outputSingleScan(s, [5]);
 +
fprintf('Press return to continue\n');
 +
pause
 +
outputSingleScan(s, [0]); 
 +
 +
% Use loop to set several different voltages
 +
for k=1:300
 +
    % Calculate voltages for each channel
 +
    Vout = 2.5+2.5*sin(2*pi*k/100);
 +
    % Put voltage to output channel
 +
    outputSingleScan(s, [Vout])
 +
    pause(0.02)
 +
end
 +
 +
% Turn output off
 +
outputSingleScan(s, [0]); 
 +
</source>
 +
 +
===BasicAIO.m===
 +
<source lang="matlab">
 +
% Initialize workspace and graph
 +
clear; format short e; figure(1); clf; daqreset;
 +
 +
% Create a session
 +
s = daq.createSession('ni');
 +
 +
% set sample rate
 +
SampleRate = 1000;
 +
s.Rate = SampleRate;
  
 +
% Add channel 0 to output
 +
chO = addAnalogOutputChannel(s,'Dev1',[0],'Voltage');
 +
% Add channels 0-3 to input
 +
chI = addAnalogInputChannel(s,'Dev1',[0],'Voltage');
 +
 +
% Review card information
 +
s
 +
chO
 +
chI
 +
 +
% Write values to output channel
 +
outputSingleScan(s, [5]);
 +
fprintf('Press return to continue\n');
 +
pause
 +
outputSingleScan(s, [0]); 
 +
 +
% Use loop to set several different voltages
 +
for k=1:300
 +
    % Calculate voltages for each channel
 +
    Vout = 2.5+2.5*sin(2*pi*k/100);
 +
    % Put voltage to output channel
 +
    outputSingleScan(s, [Vout])
 +
    % Read voltage from input channel
 +
    Voltages(k,:) = inputSingleScan(s);
 +
    pause(0.02)
 +
end
 +
 +
% Turn output off
 +
outputSingleScan(s, [0]); 
 +
 +
% Plot voltage versus index
 +
n = 1:k;
 +
Vtotal  = Voltages(:,1);
 +
plot(n, Vtotal, 'r')
 +
legend('Total Voltage', 'Location', 'Best')
 +
 +
</source>
 +
-->
 +
<!--
 +
=== Function to Plot Curves ===
 +
<source lang="matlab">
 +
function CurvePlotter(Vin, MyAdjective)
 +
subplot(1, 2, 1)
 +
plot(Vin(:,1), Vin(:,1), 'k-',...
 +
    Vin(:,1), Vin(:,2), 'b-',...
 +
    Vin(:,1), Vin(:,3), 'g-')
 +
axis([-1 5 -1 5])
 +
grid on
 +
title(sprintf('%s Green', MyAdjective))
 +
subplot(1, 2, 2)
 +
plot(Vin(:,4), Vin(:,4), 'k-',...
 +
    Vin(:,4), Vin(:,5), 'm-',...
 +
    Vin(:,4), Vin(:,6), 'r-')
 +
axis([-1 5 -1 5])
 +
grid on
 +
title(sprintf('%s Red', MyAdjective))
 +
</source>
 +
 +
=== Script to Plot All Three Figures ===
 +
 +
<source lang="matlab">
 +
clear
 +
 +
% Small LEDs
 +
load SmallData
 +
figure(1); clf
 +
CurvePlotter(Voltages, 'Small')
 +
print -dpng SmallPlot % This will make SmallPlot.png
 +
 +
% Large LEDs
 +
%% your code here
 +
 +
% Rectangular LEDs
 +
%% your code here
 +
</source>
 +
-->
  
 
== Questions ==
 
== Questions ==
Line 52: Line 195:
 
<references />
 
<references />
  
−
[[Category:EGR 53]]
+
[[Category:EGR 103]]

Latest revision as of 16:09, 3 April 2019

This is the old page

You probably want Python:DAQ 2


Questions

Post your questions by editing the discussion page of this article. Edit the page, then scroll to the bottom and add a question by putting in the characters *{{Q}}, followed by your question and finally your signature (with four tildes, i.e. ~~~~). Using the {{Q}} will automatically put the page in the category of pages with questions - other editors hoping to help out can then go to that category page to see where the questions are. See the page for Template:Q for details and examples.

External Links

References

Retrieved from "https://pundit.pratt.duke.edu/piki/index.php?title=EGR_103/DAQ_2&oldid=24010"