Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2011, Vol. 22 ›› Issue (6): 366-371 doi: 10.13538/j.1001-8042/nst.22.366-371


A real time transmission system of long distance for nuclear logging

CAO Ping SONG Kezhu~* YANG Junfeng   

  1. State Key Laboratory of Particle Detection and Electronics,Anhui Key Laboratory of Physical Electronics,Department of Modern Physics, University of Science and Technology of China,Hefei 250026,China
CAO Ping, SONG Kezhu, YANG Junfeng . A real time transmission system of long distance for nuclear logging.Nuclear Science and Techniques, 2011, 22(6): 366-371     doi: 10.13538/j.1001-8042/nst.22.366-371


Some specified chips in traditional Manchester-Ⅱencoding/decoding designs are used to guarantee strictly the stability of the input wave,otherwise the capacity of anti-interference and resilience are degraded seriously.In this paper,a new Manchester-Ⅱencoding/ decoding system is used for nuclear logging by a 7 000 m armoring cable.A thorough hardware wave tracking decoding algorithm is proposed and realized in a FPGA hardware chip.An on-site measurements show that this transmission system can decode correctly in real time,with a bit error rate of better than 10~(-10).

Key words: Long distance transmission, Hardware real time decoding algorithm, Nuclear logging, Armoring cable, ManchesterⅡcode