Sergey Y Yurish et al 2005 Meas. Sci. Technol. 16 1660 doi:10.1088/0957-0233/16/8/018
Measurement error analysis and uncertainty reduction for period- and time-interval-to-digital converters based on microcontrollers
Sergey Y Yurish1,2, Ferran Reverter2 and Ramon Pallàs-Areny2
Show affiliationsThis paper analyses individual error components contributing to the total error for period (or time-interval)-to-digital converters based on common microcontrollers. Two new error components are considered for measurements based on starting/stopping the timer by software: (1) the error because of the latency time between the occurrence of the interrupt request and the beginning of the interrupt machine cycle, and (2) the error due to the time delay between the beginning of the interrupt machine cycle and the start (or stop) of the time/counter. Both errors happen for any signal waveform, including rectangular signals. Solutions for their reduction are also described, such as the use of the capture module embedded in some modern microcontrollers. An advanced method to estimate the overall converter measurement error, based on Lyapunov's characteristic functions and a piece-wise linear approximation of probability distribution functions, increases the accuracy of the error estimation and reduces the uncertainty interval by 20–40%.
- PACS
-
84.30.Sk Pulse and digital circuits
02.50.-r Probability theory, stochastic processes, and statistics
- Subjects
- Dates
-
Issue 8 (August 2005)
Received 25 February 2005, in final form 18 May 2005
Published 20 July 2005
-
Measurement error analysis and uncertainty reduction for period- and time-interval-to-digital converters based on microcontrollers
Sergey Y Yurish et al 2005 Meas. Sci. Technol. 16 1660
-
The evolution towards flexible workflow systems
Gary J Nutt 1996 Distrib. Syst. Engng. 3 276
-
Suprathreshold Stochastic Resonance in a Single Comparator
Wang Ren-Guo and Long Zhang-Cai 2007 Chinese Phys. Lett. 24 275
-
Kinematics of the Hercules Supercluster
Pauline Barmby and John P. Huchra 1998 The Astronomical Journal 115 6
-
Study of mutation rate in offspring of Chernobyl liquidators
F J Turvey 2001 J. Radiol. Prot. 21 317
-
The effect of electronic autoionization on vibrational branching ratio in (1 + 1')-photon resonance-enhanced multiphoton ionization of
molecules: dependence on laser intensity
Jainab Khatun and Krishna Rai Dastidar 1999 J. Phys. B: At. Mol. Opt. Phys. 32 373
-
Digital temperature compensation of a thermistor flowmeter
I M Katz and E J Shaughnessy 1987 J. Phys. E: Sci. Instrum. 20 561
-
A Spherical Template for Drilling Balls for Crystal Structure Models
W A Wooster and R Cole 1945 J. Sci. Instrum. 22 130