[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Ferrari et al., 2000 - Google Patents

Improving the accuracy and operating range of quartz microbalance sensors by a purposely designed oscillator circuit

Ferrari et al., 2000

Document ID
13483643940282086350
Author
Ferrari V
Marioli D
Taroni A
Publication year
Publication venue
Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066]

External Links

Snippet

A method is presented to measure accurately the resonant frequency and to increase the functioning range of quartz microbalance sensors subject to heavy acoustic loading, such as encountered in in-liquid operation and with viscoelastic coating films. The method is based …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes
    • H03L1/025—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes and a memory for digitally storing correction values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device
    • H03B5/362—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator active element in amplifier being semiconductor device the amplifier being a single transistor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/022—Fluid sensors based on micro-sensors, e.g. quartz crystal-microbalance [QCM], surface acoustic wave [SAW] devices, tuning forks, cantilevers, flexural plate wave [FPW] devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material
    • G01N27/22—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating capacitance

Similar Documents

Publication Publication Date Title
Eichelbaum et al. Interface circuits for quartz-crystal-microbalance sensors
Ferrari et al. Improving the accuracy and operating range of quartz microbalance sensors by a purposely designed oscillator circuit
Arnau et al. Circuit for continuous motional series resonant frequency and motional resistance monitoring of quartz crystal resonators by parallel capacitance compensation
Rodriguez-Pardo et al. Sensitivity, noise, and resolution in QCM sensors in liquid media
Schmid et al. A computer-controlled system for the measurement of complete admittance spectra of piezoelectric resonators
Montagut et al. Frequency-shift vs phase-shift characterization of in-liquid quartz crystal microbalance applications
JPWO2004085976A1 (en) Mass measuring method, excitation circuit of piezoelectric vibrating piece for mass measurement, and mass measuring apparatus
US4817430A (en) System for determining the thickness of varying material coatings
US6938462B2 (en) Device for measuring viscosity and/or density
US20060232281A1 (en) Method and device for determining the resonant frequency of resonant piezoelectric sensors
Jakoby et al. Novel analog readout electronics for microacoustic thickness shear-mode sensors
Arnau et al. A new method for continuous monitoring of series resonance frequency and simple determination of motional impedance parameters for loaded quartz-crystal resonators
FI121898B (en) Method and apparatus for measuring impedance
Arnau et al. A continuous motional series resonant frequency monitoring circuit and a new method of determining Butterworth–Van Dyke parameters of a quartz crystal microbalance in fluid media
Soares A quartz microbalance with the capability of viscoelasticity measurements for in situ electrochemical investigations
Ferrari et al. Oscillator circuit configuration for quartz-crystal-resonator sensors subject to heavy acoustic load
Schweyer et al. A novel monolithic piezoelectric sensor
Lucklum et al. Interface circuits for QCM sensors
Ferrari et al. Improving the accuracy and operating range of quartz microbalance sensors by a purposely designed oscillator circuit
CN110440883B (en) Static capacitance compensation circuit and method of quartz crystal microbalance
Ferrari et al. ACC oscillator for in-liquid quartz microbalance sensors
Driscoll Oscillator AM-to-FM noise conversion due to the dynamic frequency-drive sensitivity of the crystal resonator
Riesch et al. Novel readout electronics for thickness shear-mode liquid sensors compensating for spurious conductivity and capacitances
US6654470B1 (en) Frequency warping for improving resonator signal-to-noise ratio
Rocha et al. Improved electronic readout circuit for resonant acoustic sensors