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wind_sensor:meeting_minutes_feb_17_2017 [2017/02/18 03:48] mwu [Ultrasonic Wind Sensor] |
wind_sensor:meeting_minutes_feb_17_2017 [2021/09/19 21:59] (current) |
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| =====Acoustic Wind Sensor===== | =====Acoustic Wind Sensor===== | ||
| * Updates: | * Updates: | ||
| + | * Completed real time processing algorithm | ||
| + | * Documented development of algorithm | ||
| * To Do: | * To Do: | ||
| + | * Test accuracy of algorithm with a single microphone | ||
| =====Ultrasonic Wind Sensor===== | =====Ultrasonic Wind Sensor===== | ||
| * Updates: | * Updates: | ||
| Line 12: | Line 15: | ||
| * Derived the original frequency based off of the number of periods (1000) and the elapsed time (f = periods/time) | * Derived the original frequency based off of the number of periods (1000) and the elapsed time (f = periods/time) | ||
| * Results were fairly accurate (mic 1 was generally within 1 Hz and mic2 was within 5 Hz) | * Results were fairly accurate (mic 1 was generally within 1 Hz and mic2 was within 5 Hz) | ||
| - | * Because mic2 is farther away, we think that some waves might have been "lost", or didn't have enough energy to successfully trigger mic2 in order to be registered. | + | * Because mic2 is farther away, we think that some waves might have been "lost", or didn't have enough energy to successfully trigger mic2 in order to be registered. |
| * To Do: | * To Do: | ||
| * Think of ways to improve the accuracy of mic2 (maybe use a louder source?) | * Think of ways to improve the accuracy of mic2 (maybe use a louder source?) | ||
| * Implement the algorithm to derive the propagation time between mic1 and mic2 (and thus the wind speed). | * Implement the algorithm to derive the propagation time between mic1 and mic2 (and thus the wind speed). | ||
| - | * Create a Schmitt trigger using an op-amp and replace the comparater circuit | + | * Create a Schmitt trigger using an op-amp and replace the comparator circuit |