ISSN 1991-2927
 

ACP № 1 (59) 2020

Author: "Gennadii Nikolaevich Abramov"

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Gennadii Nikolaevich Abramov, Doctor of Sciences in Engineering, Professor of the Department of Industrial Electronics of Togliatti State University (TlSU); Honored Worker of Higher Professional Education in Russia; an author of monographs, study guides, patents, and scientific publications in the field of analog-to-digital and digital-to-analogue conversions of monopulse electrical signals (MIES). e-mail: yuran_a@mail.ru.G.N. Abramov

Iurii Gennadevich Abramov, Master in Engineering and Technology of Electronic Devices and Hardware; graduated from Togliatti State University; a system administrator of Labyrinth Volga, LLC; an author of scientific publications and patents in the field of analog-to-digital conversions of MIES parameters. e-mail: yuran_a@mail.ruI.G. Abramov

Improved efficiency of nonius-pulse time-digital converters59_12.pdf

The article deals with two methods, both methods are implemented in two versions, reducing the additional conversion time to (first options) and (second options) times of non-pulse-time-to-digital converters (TDC). In both methods, the conversion process is organized according to the interpolation scheme, it contains the conversion scales “roughly”, “precisely” and “more precisely” and two (start and stop) recirculation generators. The whole number of follow-up periods Тstr that filling the duration of the converted time interval (TI) of the start one (in the first cases) or multiphase (in the second cases) recirculation generator RGstr is initially “roughly” determined in the course of the interpolation conversion. Then the nonius-pulse method - “exactly”, with discreteness < Tstr, digitizes that part of the converted TI, which is enclosed between the last recorded impulse of the RGstr and directly the end of the converted TI. Further, the direct encoding method - “more precisely”, with the discreteness of the conversion , encodes the TI, the duration is less than the value . Moreover, in both methods, a single-phase stop recirculation generator RGstp is used. The hardware implementation of the first method is based on the use of a single-phase RGstr and a separate direct-coding (DC) module, which only performs the “more accurate” conversion and does not participate in the “rough” and “exactly” conversions. Whereas in the second method, the DC TDC, through its multi-tap delay line, is introduced directly into the RGst, transforming it into a multiphase generator, which forms single-phase reading scales “roughly”, “exactly” and a multiphase scale “more precisely”, which ensures a decrease in of the instability of the discreteness of the transformation “exactly” and “more precisely”. The use of multiphase RGstr makes it possible to eliminate the problem of pairing (docking) of all three conversion scales.

Vernier-pulse time-to-digital converters, single- and multiphase recirculation generators, direct-coding analog- to-digital converters, pulse-counting sequence, conversion resolution.

2020_ 1

Sections: Electrical engineering and electronics

Subjects: Electrical engineering and electronics.

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