ELECTROMAGNETIC INTERFERENCE MITIGATION OF AUDIO FREQUENCY SIGNALING SYSTEM FOR BALTIMORE REGION RAPID TRANSIT SYSTEM

This report describes the work done in five phases on the development of an Audio Frequency Signaling System which is compatible with the Westinghouse Electric propulsion control chopper. A train detection receiver using the synchronous rectification concept was developed and tested using intereference generated by a prototype chopper. Results indicate a high level of immunity against induced interference from the chopper equipment. The signaling system and the propusion control chopper system are being used on the Baltimore Region Rapid Transit System (and also on the Metropolitan Dade County Rapid Transit System). This report also includes 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:

  American Standard, Incorporated

  Union Switch & Signal Division, Switch Building
  Swissvale, PA  United States  15218

  Urban Mass Transportation Administration

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Vaughn, T C
  • Mokkapati, C
  • Bozio, R P
• Publication Date: 1983-11

Media Info

• Pagination: 186 p.

Subject/Index Terms

• TRT Terms: Chopper circuits; Electric power conditioning; Electromagnetic interference; Rapid transit; Signaling; Track circuits
• Identifier Terms: Urban Mass Transportation Act
• Geographic Terms: Baltimore (Maryland)
• Old TRIS Terms: Audio frequency track circuits; Choppers; Umta section 6
• Subject Areas: Operations and Traffic Management; Public Transportation;

Filing Info

• Accession Number: 00394520
• Record Type: Publication
• Report/Paper Numbers: UMTA-MD-06-0072-83-1Final Rpt.
• Contract Numbers: MD-06-0072-01
• Files: TRIS, USDOT
• Created Date: May 31 1985 12:00AM