Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
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Sample results<br />
0.01<br />
0<br />
-0.01<br />
-0.02<br />
First derivative (only <strong>the</strong> section after <strong>the</strong> first peak point)<br />
-0.03<br />
0 500 1000 1500 2000 2500<br />
Index <strong>of</strong> data points<br />
Voltage(V)<br />
0.5<br />
0<br />
-0.5<br />
-1<br />
Reflection points on <strong>the</strong> smoo<strong>the</strong>d wave<strong>for</strong>m<br />
-1.5<br />
0 500 1000 1500 2000 2500<br />
Index <strong>of</strong> data points<br />
30<br />
Measured scour based on<br />
reflection detection<br />
<strong>TDR</strong> measured scour depth (cm)<br />
35 fine sand in tap water<br />
fine sand in 250ppm saline water<br />
1:1 line<br />
25<br />
20<br />
15<br />
10<br />
5<br />
0<br />
Reflection detection<br />
0 5 10 15 20 25 30 35<br />
Measured scour depth (cm)<br />
51
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