National Instruments NI myRIO, Essentials Manual

Page: 55 / 163

CHAPTER 7. COIN CALIPER II 49
i. Calibrate (Figure 7.3 on page 52),
ii. Save Image (Figure 7.4 on page 53, and
iii. Default task (Figure 7.5 on page 54
3. Step 3: Develop Vision Script
13
– Coin Caliper II demo Step 3/15: Develop
the vision script in the stand-alone version of Vision Assistant to measure
and report the coin diameter in pixels and in real-world units.
4. Step 4: Import Vision Script
14
– Coin Caliper II demo Step 4/15: Import
the vision script into the LabVIEW Vision Assistant Express VI; select
controls and indicators.
5. Step 5: Connect Script
15
– Coin Caliper II demo Step 5/15: Connect the
Vision Assistant Express VI controls and indicators to the data highway.
6. Step 6: Obtain ROI
16
– Coin Caliper II demo Step 6/15: Use a “Property
Node” to obtain the user-selected ROI from the main image display.
7. Step 7: Create Task Buttons
17
– Create an action button for the calibrate
state.
8. Step 8: Create Increment State
18
– Create the increment file number state
and add “file number” to the data highway.
9. Step 9: Create Calibrate State
19
– Create the calibrate state, add “known
diameter” to the data highway, and calculate the scale factor as known
diameter in millimeters divided by measured diameter in pixels.
10. Step 10: Edit Overlay State
20
– Edit the
(qsm) overlay
state to add the
coin diameter to the nondestructive overlay.
11. Step 11: Edit Save Image State
21
– Edit the save image state to use “file
number” from the data highway.
12. Step 12: Edit myRIO Ports State
22
– Edit the (myRIO) update ports state
to operate the myRIO LED indicators.
13
http://youtu.be/LR33-W4Thww
(5:12)
14
http://youtu.be/sIj-EPxV8Tg
(2:24)
15
http://youtu.be/TWYBgLmCmnc
(3:53)
16
http://youtu.be/LzvU9eOcXO8
(1:32)
17
http://youtu.be/8WKzPgNUbQ4
(1:07)
18
http://youtu.be/5yp9NaZA7SI
(2:45)
19
http://youtu.be/pc2DZfITPrM
(2:43)
20
http://youtu.be/DgJ-ere6_5k
(2:19)
21
http://youtu.be/JwuVK83GLJo
(4:40)
22
http://youtu.be/7LFFkM7CZBg
(2:42)