wind_sensor:meeting_minutes_mar_10_2017:meeting_minutes_mar_3_2017

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Wind Sensor Team Meeting-March 10, 2017

Attended: Mengyuan, Creighton, Scott

Acoustic Wind Sensor

  • Updates:
  • To Do:

Ultrasonic Wind Sensor

  • Updates:
    • Determined that the Teensy is unable to output a 40kHz sine wave from the DAC port. Instead of a clean sine wave, it was a choppy square-ish wave. Upon further research, it seems that the DAC on the Teensy is only capable of about a 5kHz sine.
    • Further ran tests with the ultrasonic transducers using a function generator and oscilloscope. We found out that we don't actually need a sine wave to drive the transducers, and that a square wave would work as well. This is good news since square waves are much easier to produce than sine waves.
    • Tested transmitter with 3.3Vpp, 40kHz square wave. Result is 400mVpp sine wave. This isn't bad, (much better result than previously), but we would need an amplifier circuit to increase this signal.
    • Ordered more parts as backup.
  • To Do:
  • wind_sensor/meeting_minutes_mar_10_2017/meeting_minutes_mar_3_2017.1489195367.txt.gz
  • Last modified: 2021/09/19 21:59
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