Nano-Resolution Sensors for Environmental ... - Paroscientific, Inc.

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PressureSignalTimeN PeriodsTimebaseClockTimeSampling Time=NτPeriod Resolution=+/- 1 Count/(Total Counts)=+/- 1 / (Nτ)(f c )= +/- 1 / (Sampling Time) (f c )Force Resolution= +/- 10 / (Nτ)(f c ) (Only 10% of the counts arerelated to Force)Example: If clock=20 MHz and sampling time=1 secondThen the Force Resolution=5x10 -7 Full ScaleParoscientific, Inc.
Linearization and TemperatureCompensationForce = C[1- τ 02 / τ 2 ] [1-D(1- τ 02 / τ 2 )]τ =Force Resonator Period OutputC=Scale Factor in Desired Engineering UnitsD=Linearization Coefficientτ 0 =Period Output at No Load (Force=0)U=(Temperature Sensor Period)-(Temperature Period at zero 0 C)τ 0 = τ 1 + τ 2 U+ τ 3 U 2 + τ 4 U 3 + τ 5 U 4C=C 1 +C 2 U+C 3 U 2D=D 1 +D 2 UTemperature=Y 1 U+Y 2 U 2 +Y 3 U 3 ( 0 C)Paroscientific, Inc.
Page 1 and 2: Nano-Resolution Sensors forEnvironm
Page 3 and 4: NSF Instrumentation GoalsThe NSF "S
Page 5 and 6: Application Areas for Quartz Sensor
Page 7 and 8: Advantages of Quartz Resonant Senso
Page 9 and 10: Paroscientific, Inc.Double-Ended Tu
Page 11 and 12: Paroscientific, Inc.Wafer of Temper
Page 13 and 14: Paroscientific, Inc.Digiquartz ® B
Page 15: Reciprocal Start-Stop CountingPress
Page 19 and 20: Nano-Resolution Counting Techniques
Page 21 and 22: Resolution Improvement with Nano-Co
Page 23 and 24: Ambient Barometric Infrasound Spect
Page 25 and 26: Digiquartz Nano-Barometer Spectral
Page 27 and 28: 642Pa0-2-4-61950 2000 2050 2100 215
Page 29 and 30: Digiquartz Depth Sensor Noise Floor
Page 31 and 32: Tsunami Detection (Earthquake Gener
Page 33 and 34: Ocean Observatory Program Paroscien
Page 35 and 36: Paroscientific, Inc.Digiquartz ® P
Page 37 and 38: GPS MeteorologyGPS Determination of
Page 39 and 40: Atmospheric Noise MitigationLocal a
Page 41 and 42: Paroscientific, Inc.Atmospheric Tid
Page 43 and 44: Year-long Atmospheric Tides at Albu
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Page 47 and 48: Resonant Quartz Crystal Acceleromet
Page 49 and 50: Acceleration Sensing ResonatorsQuar
Page 51 and 52: Earthquake Nano-Resolution with3-g

Nano-Resolution Sensors for Environmental ... - Paroscientific, Inc.

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