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wind_sensor:meeting_minutes_mar_10_2017 [2017/03/25 02:48] mwu [Ultrasonic Wind Sensor] |
wind_sensor:meeting_minutes_mar_10_2017 [2021/09/19 21:59] (current) |
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| * Attempted to measure the amount of time that each interrupt spends inside their routine by by saving the difference between the clock cycle entering the interrupt and the clock cycle when leaving the interrupt into an array. From some tests, it seems like they're both consistent, but mic2 is a bit funny. It may be because I'm reattaching mic2's interrupt after mic1, but mic1 is solid. | * Attempted to measure the amount of time that each interrupt spends inside their routine by by saving the difference between the clock cycle entering the interrupt and the clock cycle when leaving the interrupt into an array. From some tests, it seems like they're both consistent, but mic2 is a bit funny. It may be because I'm reattaching mic2's interrupt after mic1, but mic1 is solid. | ||
| * Instead of implementing the error-filtering code directly on the Teensy, I took some raw measurements and am going to try to filter them out using other methods first, to see if the results are good. The results are below: | * Instead of implementing the error-filtering code directly on the Teensy, I took some raw measurements and am going to try to filter them out using other methods first, to see if the results are good. The results are below: | ||
| - | * {{ :wind_sensor:woohoo.png?direct&700 |}} | + | * {{ :wind_sensor:woohoo.png?direct&600 |}} |
| * Note that I used 100k samples, which is much more than what I'd have realistically, but this was done just to test the algorithm. As shown, the algorithm managed to get really close to the theoretical (although it should be noted that the theoretical had some error associated with it due to how we measured the distance between the mics). | * Note that I used 100k samples, which is much more than what I'd have realistically, but this was done just to test the algorithm. As shown, the algorithm managed to get really close to the theoretical (although it should be noted that the theoretical had some error associated with it due to how we measured the distance between the mics). | ||
| * To Do: | * To Do: | ||