Parallel data processing in a 3-channel integrated time-interval counter

• Autorzy: Jachna Z. , Szplet R. , Kwiatkowski P. , Różyc K.
• Języki publikacji: EN

Abstrakty

EN

In this paper, we discuss an issue of parallel data processing in multichannel time interval counters (TICs). Particularly we analyze this problem within the framework of a 3-channel TIC developed for the international project Legal Time Distribution System (LTDS). The TIC provides the high measurement precision (< 15 ps) and wide range (> 1s) that are obtained by combining reference clock period counting with in-period interpolation. A measurement process consists of three main stages: (1) events registration, (2) data processing and (3) data transfer. In the event registration stage all input events are identified and registered with related unique timestamps based on a consistent time scale. To achieve high measurement precision, the stream of timestamps is then processed using actual transfer characteristics of the TIC and offset values of all measurement channels. We describe the concept of parallel data processing and its implementation in a Spartan-6 FPGA device (XC6SLX75, Xilinx).

Słowa kluczowe

EN

programmable device; time-to-digital converters; interpolating time counters; parallel data processing

• Wydawca: Wydawnictwo PAK
• Czasopismo: Measurement Automation Monitoring
• Rocznik: 2015
• Tom: Vol. 61, No. 7
• Strony: 308--310
• Opis fizyczny: Bibliogr. 5 poz., rys., schem., tab., wzory

Twórcy

autor

Jachna Z.

• Military University of Technology, Department of Electronics, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

autor

Szplet R.

• Military University of Technology, Department of Electronics, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

autor

Kwiatkowski P.

• Military University of Technology, Department of Electronics, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

autor

Różyc K.

• Military University of Technology, Department of Electronics, 2 Gen. S. Kaliskiego St., 00-908, Warszawa 49

Bibliografia

• [1] Gupta S., Christiansen J., Hayashi Y., Jain A., Mohanty P., Ravindran K., Satyanarayana B.: Measurement of arrival time of particles in extensive air showers using TDC32. Experimental Astronomy, vol. 35, no. 3, pp. 507–526, 2013.
• [2] Jansson J., Koskinen V., Mantyniemi A., Kostamovaara J.: A Multi-Channel High Precision CMOS Time-to Digital Converter for Laserscanner Based Perception Systems. Trans. Instrum. Meas., vol. 61, no. 9, 2012.
• [3] Szplet R., Kwiatkowski P., Jachna Z., Różyc K.: Precise Three-Channel Integrated Time Counter. Proc. 2015 Joint Conference of the IEEE IFC Symposium & EFTF Forum, Denver, USA, April 12-16, 2015.
• [4] Cova S., Bertolaccini M.: Differential linearity testing and precision calibration of multichannel time sorters. Nuclear Instruments and Methods, vol. 77, no. 2, 1970.
• [5] Jachna Z., Szplet R., Kwiatkowski P., Różyc K.: Code processor for realization of calibration procedures in interpolating time counter (in Polish). Measurement Automation and Monitoring, vol. 60, no. 7, pp. 438-440, 2014.