HAND-HELD RAILROAD DATA ACQUISITION SYSTEM

The invention is a data acquisition system including a condition responsive sensor for producing an analog signal indicative of a given variable condition, a delta modulator circuit connected to receive and convert the analog signal into a modulated pulse train indicative of the given condition, an encoder circuit connected to receive and convert the modulated pulse train into an audio output signal, and a recorder connected to receive and record the audio output signal. The encoder produces Harvard phase coding of the modulated pulse train and produces an audio output signal in a range between 1000 and 3000 Bauds that is compatible with cassette tape recorders.

• Supplemental Notes:
  • This Government-owned invention available for U.S. licensing and, possibly, for foreign licensing. Copy of application available NTIS.
• Corporate Authors:

  Department of Transportation

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Long, L E
  • Sarkisian, E A
• Publication Date: 1980-6

Media Info

• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Data collection; Instrumentation; Patents
• Subject Areas: Data and Information Technology; Design; Railroads;

Filing Info

• Accession Number: 00318730
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: PAT-APPL-6-158 907, DOT/CASE/TSC-10147
• Files: TRIS, USDOT
• Created Date: Oct 27 1980 12:00AM