ELECTROMAGNETIC INTERFERENCE MITIGATION OF AUDIOFREQUENCY SIGNALING SYSTEM FOR BALTIMORE REGION RAPID TRANSIT SYSTEM

This report presents the results of the five phases of work done on the electromagnetic compatibility of the audio-frequency train detection and cab signaling system (commercially known as the AF-400 system) with the Westinghouse Electric propulsion chopper. The authors note that a new audio-frequency receiver, which is immune to induced electromagnetic interference from the chopper equipment, has been designed, tested and successfully applied. The signalling system and the propulsion control chopper system are being used on the Baltimore Region Rapid Transit System and the Metropolitan Dade County Rapid Transit System. This report also includes information on the manufacturing, design and installation drawings, qualification test procedures and results, and field test procedures and results applicable to the audio-frequency signaling system.

• Corporate Authors:

  Mass Transit Administration of Maryland

  109 East Redwood Street
  Baltimore, MD  United States  21202
• Authors:
  • Vaughn, T C
  • Mokkapati, C
  • Bozio, R P
• Publication Date: 1983-11

Media Info

• Pagination: 217 p.

Subject/Index Terms

• TRT Terms: Chopper circuits; Electric power; Electrical systems; Electromagnetic interference; Propulsion; Railroad signaling; Rapid transit; Traffic signal control systems
• Identifier Terms: Urban Mass Transportation Act
• Geographic Terms: Baltimore (Maryland); Miami-Dade County (Florida)
• Old TRIS Terms: Choppers; Signal systems; Train detection; Umta section 6
• Subject Areas: Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 00399567
• Record Type: Publication
• Report/Paper Numbers: UMTA-MD-06-0072-83-1
• Files: TRIS, STATEDOT
• Created Date: Nov 30 1985 12:00AM