A DATA ACQUISITION SYSTEM FOR MONITORING THE PHYSICAL PHENOMENA OF HIGHWAY BRIDGES IN SERVICE

THE DATA ACQUISITION SYSTEM DESCRIBED IS AN EXTREMELY FLEXIBLE, LOW SPEED DATA ACQUISITION, PROCESSING AND PRESENTATION SYSTEM INCORPORATING THE LATEST ADVANCES IN DIGITAL TECHNOLOGY. IT WAS DESIGNED TO SATISFY THE INSTRUMENTATION REQUIREMENTS OF MONITORING, PROCESSING AND RECORDING PHYSICAL PHENOMENA OF HIGHWAY BRIDGES IN SERVICE. THE SYSTEM IS USED FOR GATHERING AND RECORDING INFORMATION FORM SPECIFIC POINTS ON BRIDGES NECESSARY TO COMPLETE THE TEST OBJECTIVE. THE SYSTEM INPUT SECTION WILL ACCOMODATE 15 CHANNELS OF LOW LEVEL TRANSDUCER ANALOG INFORMATION. THE CONDITIONED LOW-LEVEL ANALOG SIGNALS ARE PRESENTED TO 15 WIDE-BAND DIFFERENTIAL AMPLIFIERS FOR AMPLIFICATION AND SELECTIVE FILTERING. THE DIGITAL PROCESSING SECTION ACCEPTS INFORMATION FROM THE ACQUISITION SECTION AND CONVERTS IT TO A FORM SUITABLE FOR ENTRY TO THE SPECIAL PURPOSE STORED PROGRAM DATA PROCESSOR. THE OUTPUT SECTION CONTAINS THE PRINTER AND/OR PAPER TAPE PUNCH. THIS DEVICE, WITH AN ON-LINE DATA PATH TO THE STORED PROGRAM DATA PROCESSOR, AND THE STORED PROGRAM DATA PROCESSOR WITH AN ON-LINE CONTROL PATH BACK TO THE DIGITAL PROCESSOR, ALLOWS THE STORED PROGRAM DATA PROCESSOR TO MONITOR DATA AND CONTROL PROCESSING PARAMETERS WITH GREAT FLEXIBILITY AND EFFICIENCY. DIGITAL DATA FROM 10 PRIMARY INPUT CHANNELS IS MONITORED FOR CYCLIC VARIATIONS BY 10 PROGRAMMED DATA REGISTERS AND SORTING IN COUNTERS THE ACCUMULATED NUMBERS OF OCCURRENCES OF EACH LEVEL. AT THE END OF EVERY TIME SUB-INTERVAL, THE STORED PROGRAM DATA PROCESSOR WILL MONITOR ALL 15 CHANNELS FOR 30 SECONDS. TIME IS ON AN ELAPSED TIME BASIS THROUGH THE USE OF A REAL TIME CLOCK.

• Corporate Authors:

  Sds Data Systems

  ,    
• Authors:
  • Fidler, L M
• Publication Date: 1966-7

Subject/Index Terms

• TRT Terms: Analog computers; Data collection; Digital computers; Highway bridges; Information processing; Information systems; Recording; Transducers
• Old TRIS Terms: Analog systems; Digital systems; Paper tape readers
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207827
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Report/Paper Numbers: Cpr-11-2853
• Files: TRIS
• Created Date: May 25 1994 12:00AM