Automatic data acquisition and processing of train deceleration for rapid transit train systems

ABSTRACT

A microprocessor-based computer system has been developed for the dedicated acquisition of data associated with the deceleration characteristics of trains in a rapid transit system. The computer collects braking profiles (velocity and position) along a 4325-ft. section of track prior to station entry, at one-foot intervals. These data, occupying a volume of about 8K bytes per train, are stored on tape and transmitted to a remote microprocessor during non-revenue periods. The remote computer archives these data, and performs data reduction and analysis. Results are useful as a monitor of braking performance, and enable a statistical inference of braking distances under various ambient and train-related conditions.

INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.3 SPECIAL-PURPOSE AND APPLICATION-BASED SYSTEMS
      Subjects: Microprocessor/microcomputer applications

Additional Classification:
  D. Software
  D.4 OPERATING SYSTEMS
      D.4.8 Performance
          Subjects: Monitors

  K. Computing Milieux
  K.6 MANAGEMENT OF COMPUTING AND INFORMATION SYSTEMS
      K.6.1 Project and People Management
          Subjects: Systems development

General Terms:
Management, Performance

Keywords:
Data acquisition, Microprocessor monitor, Rapid transit system