BITBUS构成的局部网在电牵引运动监控系统中的应用

THE APPLICATION OF THE LOCAL NETWORK WITH BITBUS IN THE POWER SUPPLY SUPERVISORY SYSTEM OF ELECTRIC RAILWAYS

本文对现行的运动监控系统存在的某些缺陷,提出用局部网来构造分布式的运动监控系统,而以单片机intel8044为基础的BITBUS构成的局部网为最佳。本文结合电气化铁道特点,设计一双机备用的BITBUS主控站和分布式BITBUS远方终端,并探讨了两种RTU的实用扩展技术。

To remedy defects existing in the present power supplysupervisory system, a distribution type is proposed to be formed bylocalnetworks; the best choice is that formed by the local network witha BITBUS based on the Intel 8044 single--chip processor.In this paper,two design instances are shown in the light of the specific conditions ofelectric railway. One is a BITBUS--based master station with twoalternate computers; the other is a distribution RTU based on BITBUS.Furthermore, two practical methods to extend the RTU sub--system aredescribed.