N. A. Lukin, L. S. Rubin
A PRECISION LOW-FREQUENCY ANALOG-TO-DIGITAL CONVERTER FOR ADVANCED SYSTEMS OF TECHNICAL DIAGNOSTICS AND NONDESTRUCTIVE TESTING
DOI: 10.17804/2410-9908.2020.5.006-016 The main results of the development of a precision low-current meter based on a nonlinear ADC are presented. It is shown that the application of the method of nonlinear analog-to-digital conversion and a controlled voltage level at the non-inverting input of an integrating operational amplifier allows both high sensitivity and a wide dynamic range with a small spread of output codes. The use of the laboratory sample of the meter for cyclic tensile testing of steel specimens is described.
Keywords: nonlinear analog-to-digital converter, nanoampere current meter, integrating operational amplifier, magnetostriction measurement References:
- Aaltonen L. Integrated Interface Electronics for Capacitive MEMS Inertial Sensors, Doct. Diss., Aalto Univ., Sc. Sci. Tech., Fac. Electr., Comm. Autom., Dep. Micro Nanosci., 2010, 152 p.
- Boyden E., Rifai O.El., Hubert B., Karpman M., Roberts D. A High-Performance Tunneling Accelerometer. MIT Term Project Paper 6.777, Introduction to Microelectromechanical Systems, Spring, 1999, 58p.
- Osaki Yuji, Hirose Tetsuya, Kuroki Nobutaka, and Numa Masahiro. Temperature-Compensated Nano-Ampere Current Reference Circuit with Subthreshold Metal–Oxide–Semiconductor Field-Effect Transistor Resistor Ladder. Jpn. J. Appl. Phys., vol. 50, no. 4S, pp. 04DE08-1–6. DOI: 10.1143/JJAP.50.04DE08.
- Linares-Barranco B., Serrano-Gotarredona T., Serrano-Gotarredona R., Serrano-Gotarredona C. Current Mode Techniques for Sub-pico-Ampere Circuit Design. Analog Integrated Circuits and Signal Processing, 2004, 38, pp. 103–119.
- Digital processors limited by power; what’s the upside? Available at: https://phys.org/news/2012-08-digital-processors-limited-power-upside.html
- Gelman M.M. Sistemnye analogo-tsyfrovye preobrazovateli i protsessory signalov [System Analog-to-Digital Converters and Signal Processors]. Moscow, Mir Publ., 1999, 559 p. (In Russian).
- Lukin N.A., Rubin L.S. Using nonlinear functional analog-to-digital conversion for precision measurements of small electrical quantities in real time. Giroskopiya i Navigatsiya, 2014, no. 4 (87), pp. 131–141. (In Russian).
- Integrating analog-to-digital converter for measuring small electrical signals. Patent RF 2693647 C1, 2019. (In Russian).
- Gorkunov E.S., Povolotskaya A.M., Zadvorkin S.M., Putilova E.A., Mushnikov A.N., Bazulin E.G., Vopilkin A.K. Some features in the behavior of magnetic and acoustic characteristics of hot-rolled 08G2B steel under cyclic loading. Russian Journal of Nondestructive Testing, 2019, vol. 55, no. 11, pp. 827–836.
Article reference
Lukin N. A., Rubin L. S. A Precision Low-Frequency Analog-to-Digital Converter for Advanced Systems of Technical Diagnostics and Nondestructive Testing // Diagnostics, Resource and Mechanics of materials and structures. -
2020. - Iss. 5. - P. 6-16. - DOI: 10.17804/2410-9908.2020.5.006-016. -
URL: http://eng.dream-journal.org/issues/2020-5/2020-5_281.html (accessed: 12/02/2024).
|