AUTONOMOUS UNMANNED SURFACE VEHICLE SYSTEM FOR BATHYMETRIC MEASUREMENTS: SENIOR PROJECT DESIGN
Sensor Subsystem Tests
Salinity Test
Objective:
Achieve a salinity sensor accuracy within -/+ 5 ppt using Vernier Salinity Sensor in a controlled environment.
Procedure:
1. Carefully make various salinity solutions from 0 - 35 (ppt) with distilled water and NaCl
2. Conduct two-point calibration with LabQuest 2 (manufacturer's calibration equipment)
3. Test accuracy by connecting salinity sensor to MCU and reading the known salinity solutions
Set-up Circuit Schematic:
Salinity Test Results
Salinity Solutions
Our Vernier Salinity Sensor had the most discrepancies when measuring a known solution of 35 ppt. The error was -/+ 3.567 ppt and ultimately Still less than -/+ 5 ppt
SONAR Test
Objective:
Measure the Percent (%) error of SONAR sensor in
pool at different depths. We want to achieve a % error less than 5%.
Procedure:
1. Measure the known depth with tape ruler.
2. Connect sonar sensor to MCU Rx/Tx.
3. Upload code and open serial monitor.
4. Submerge sonar sensor into pool.
5. Read serial monitor only at 100% confidence.
Set-up Circuit Schematic:
SONAR Test Results
As showcased in the graph, our highest %error value is 4.1%. Therefore the Test has passed. (4.1<5)