Difference between revisions of "EGR 103/DAQ 2"

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This page contains pictures and graphs related to DAQ 2 for [[EGR 103]].  It has been updated for Spring 2017.
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<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 ==
 
==Notes ==
  
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As before, if the system seems to not recognize Dev1, try Dev2 instead.
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* 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 ===
 
=== 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.
 
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 ===
 
=== Graph Labels ===
−
For this particular assignment, you do '''not''' need axis labels.  You need a title on each subplot, however.
+
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.
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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 ==
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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]]
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== 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);
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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,
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<math>
 
<math>
 
\begin{align}
 
\begin{align}
−
V_{out,\,0}=2.5+2.5\sin\left(\frac{2\pi k}{100}\right)\\
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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 ==
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Circuit layout for AIO (six measurements).
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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 ==
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Graph showing outputs from six measurement channels.  Note at the far left that they all start at either exactly -1 V or 0 V!
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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>
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Old colors: Blue Green Red Cyan Magenta Yellow<br>
 
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Cyan is on top of blue<br>
 
−
[[Image:VoltagesFigure.png|300 px]]<br>
 
 
New Colors: Blue Orange Yellow Purple Green Cyan<br>
 
New Colors: Blue Orange Yellow Purple Green Cyan<br>
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Purple is on top of blue<br>
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[[Image:VoltagesFigureRed.png|300 px]]<br>
−
[[Image:VoltagesFigure2.png|300 px]]<br>
 
 
</center>
 
</center>
  
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=== BasicAOutput.m===
 
=== BasicAOutput.m===
 
<source lang="matlab">
 
<source lang="matlab">
−
% Clear out workspace
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% Initialize workspace and graph
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clear
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clear; format short e; figure(1); clf; daqreset;
  
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% Clear out DAQ objects
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% Create a session
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delete(daqfind)
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s = daq.createSession('ni');
  
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% Create Analog Output Object
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% set sample rate
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AO = analogoutput('nidaq', 'Dev1');
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SampleRate = 1000;
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s.Rate = SampleRate;
  
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% Change sample rate
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% Add channel 0 to output
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set(AO, 'SampleRate', 500);
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chO = addAnalogOutputChannel(s,'Dev1',[0],'Voltage');  
  
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% View Analog Output Object
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% Review card information
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AO
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s
−
 
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chO
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% Add channels to Analog Output Object
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addchannel(AO, [0 1])
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% Write values to output channel
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outputSingleScan(s, [5]);
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fprintf('Press return to continue\n');
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−
 
 
−
 
 
−
 
 
−
 
 
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% Write values to output channels
 
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putsample(AO, [5 5])
 
 
pause
 
pause
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putsample(AO, [0 0])
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outputSingleScan(s, [0]); 
  
 
% Use loop to set several different voltages
 
% Use loop to set several different voltages
 
for k=1:300
 
for k=1:300
 
     % Calculate voltages for each channel
 
     % Calculate voltages for each channel
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     Vout0 = 2.5+2.5*sin(2*pi*k/100);
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     Vout = 2.5+2.5*sin(2*pi*k/100);
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    Vout1 = 2.5+2.5*cos(2*pi*k/100);
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     % Put voltage to output channel
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     % Put voltages to each output channel
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     outputSingleScan(s, [Vout])
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     putsample(AO, [Vout0 Vout1])
 
−
    % leave line 31 blank for now
 
−
    % leave line 32 blank for now
 
 
     pause(0.02)
 
     pause(0.02)
 
end
 
end
  
 +
% Turn output off
 +
outputSingleScan(s, [0]); 
 +
</source>
  
−
 
−
 
−
 
−
 
−
 
−
 
−
% Turn all outputs off
 
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putsample(AO, [0 0])
 
−
</source>
 
 
===BasicAIO.m===
 
===BasicAIO.m===
 
<source lang="matlab">
 
<source lang="matlab">
−
% Clear out workspace
+
% Initialize workspace and graph
−
clear
+
clear; format short e; figure(1); clf; daqreset;
−
 
 
−
% Clear out DAQ objects
 
−
delete(daqfind)
 
−
 
 
−
% Create Analog Output Object
 
−
AO = analogoutput('nidaq', 'Dev1');
 
−
 
 
−
% Change sample rate
 
−
set(AO, 'SampleRate', 500);
 
  
−
% View Analog Output Object
+
% Create a session
−
AO
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s = daq.createSession('ni');
  
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% Add channels to Analog Output Object
+
% set sample rate
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addchannel(AO, [0 1])
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SampleRate = 1000;
 +
s.Rate = SampleRate;
  
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% Create Analog Input Object
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% Add channel 0 to output
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AI = analoginput('nidaq', 'Dev1')
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chO = addAnalogOutputChannel(s,'Dev1',[0],'Voltage');
 +
% Add channels 0-3 to input
 +
chI = addAnalogInputChannel(s,'Dev1',[0],'Voltage');
  
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% Add channels to Analog Input Object
+
% Review card information
−
addchannel(AI, [0 4])
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s
 +
chO
 +
chI
  
−
% Write values to output channels
+
% Write values to output channel
−
putsample(AO, [5 5])
+
outputSingleScan(s, [5]);
 +
fprintf('Press return to continue\n');
 
pause
 
pause
−
putsample(AO, [0 0])
+
outputSingleScan(s, [0]); 
  
 
% Use loop to set several different voltages
 
% Use loop to set several different voltages
 
for k=1:300
 
for k=1:300
 
     % Calculate voltages for each channel
 
     % Calculate voltages for each channel
−
     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);
+
     % Put voltage to output channel
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     % Put voltages to each output channel
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     outputSingleScan(s, [Vout])
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     putsample(AO, [Vout0 Vout1])
+
     % Read voltage from input channel
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     % Read voltages from all input channels
+
     Voltages(k,:) = inputSingleScan(s);
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     Voltages(k,:) = getsample(AI);
 
 
     pause(0.02)
 
     pause(0.02)
 
end
 
end
  
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% Plot voltages versus index
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% Turn output off
 +
outputSingleScan(s, [0]); 
 +
 
 +
% Plot voltage versus index
 
n = 1:k;
 
n = 1:k;
−
Vleft = Voltages(:,1);
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Vtotal = Voltages(:,1);
−
Vright = Voltages(:,2);
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plot(n, Vtotal, 'r')
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plot(n, Vleft, 'g', n, Vright, 'r')
+
legend('Total Voltage', 'Location', 'Best')
−
legend('Green LED', 'Red LED', 0)
 
  
−
% Turn all outputs off
 
−
putsample(AO, [0 0])
 
 
</source>
 
</source>
−
 
+
-->
 +
<!--
 
=== Function to Plot Curves ===
 
=== Function to Plot Curves ===
 
<source lang="matlab">
 
<source lang="matlab">
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%% your code here
 
%% your code here
 
</source>
 
</source>
 +
-->
  
 
== Questions ==
 
== Questions ==

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

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