Low-cost, high-precision measurement system for capacitive sensors

被引：38
|
作者：
Kolle, C
O'Leary, P
机构：
[1] Joanneum Res, Inst Chem & Opt Sensors, A-8010 Graz, Austria
[2] Univ Min & Met Leoben, Inst Automat, A-8700 Leoben, Austria
[3] Christian Doppler Lab Sensor Messtech, A-8700 Leoben, Austria
来源：
MEASUREMENT SCIENCE AND TECHNOLOGY | 1998年 / 9卷 / 03期
关键词：
D O I：
10.1088/0957-0233/9/3/028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper describes a low-cost realization of a precision capacitance measurement instrument. The method is based on synchronous modulation and demodulation operating at a frequency of 100 kHz. A two-channel multiplying digital-to-analogue converter is used to generate a sinusoidal drive voltage and to perform multiplication with the demodulation signal. The modulation and demodulation signals are generated using a direct digital synthesizer, which is implemented using a field programmable gate array. Experimental results show a reproducibility of better than +/-0.005% in the range from 50 pF to 600 pF.
引用
收藏
页码：510 / 517
页数：8
相关论文
共 50 条
  • [21] High-precision micromilling for low-cost fabrication of metal mold masters
    Hupert, Mateusz L.
    Guy, W. Jason
    Llopis, Shawn D.
    Situma, Catherine
    Rani, Sudheer
    Nikitopoulos, Dimitris E.
    Soper, Steven A.
    MICROFLUIDICS, BIOMEMS, AND MEDICAL MICROSYSTEMS IV, 2006, 6112
  • [22] Design of a Kind of Low-Cost and High-Precision Power Measuring Device
    Pan, Dawei
    6TH ANNUAL INTERNATIONAL WORKSHOP ON MATERIALS SCIENCE AND ENGINEERING, 2020, 1622
  • [23] DESIGN, CONSTRUCTION AND CHARACTERIZATION OF A LOW-COST HIGH-PRECISION DIGITAL INTEGRATOR
    BIRCH, E
    SCOTT, R
    HEINEMAN, WR
    RIDGWAY, TH
    ANALYTICAL INSTRUMENTATION, 1986, 15 (02): : 127 - 136
  • [24] Low-Cost/High-Precision Smart Power Supply for Data Loggers
    Amorim, Marcio L. M.
    Ginja, Gabriel Augusto
    Carmo, Joao Paulo
    Moreira, Melkzedekue Moraes Alcantara
    Siqueira, Adriano Almeida Goncalves
    Afonso, Jose A. A.
    ENERGIES, 2023, 16 (01)
  • [25] High-Precision and Low-Cost Timing Method of Mobile Cellular Network
    Zhang C.
    Wen X.
    Chen Y.
    Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications, 2023, 46 (01): : 103 - 108
  • [26] Development and Evaluation of a Low-Cost, High-Precision Sensor System for Mouth-Operated Joysticks
    Veigl, Christoph
    Aigner, Benjamin
    Klaus, Benjamin
    Deinhofer, Martin
    COMPUTERS HELPING PEOPLE WITH SPECIAL NEEDS, PT II, ICCHP 2024, 2024, 14751 : 91 - 102
  • [27] Extended channel characterization of the low-cost sampling devices for the application in high-precision electric power measurement
    Stambuk, Igor
    Konjevod, Jure
    Malaric, Roman
    Sala, Alan
    MEASUREMENT, 2023, 223
  • [28] High-Precision Capacitive Sensors for Intravenous Fluid Monitoring in Hospitals
    Salmaz, Uzma
    Ahsan, M. A. H.
    Islam, Tarikul
    IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2021, 70
  • [29] Low-cost capacitive sensing for precision alignment of mirrors
    Bowman, Richard W.
    Buscher, David F.
    MEASUREMENT SCIENCE AND TECHNOLOGY, 2010, 21 (05)
  • [30] High-precision and low-cost wireless 16-channel measurement system for multi-layer thin film characterization
    Zhou, Tong
    Dong, Tao
    Su, Yan
    He, Yong
    MEASUREMENT, 2013, 46 (09) : 3600 - 3611
12345