Accession Number:

AD0683962

Title:

A PYRAMIDAL INFORMATION SYSTEM FOR ACQUIRING DATA FROM SENSORS AND FOR TRANSFERRING THEM TO A REMOTE COMPUTER,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1968-10-22

Pagination or Media Count:

16.0

Abstract:

A data acquisition system was designed to gather data from as many as 5076 sensors e.g., thermocouples, resistance thermometers, and strain gages and transmit them, for further processing, to a computer located 1.5--2 km away. The data from sensors with associated amplifiers giving out voltages in the range from 0 to 25 v are sampled and converted to digital form 10 1 sign bit code by a common AD converter and transmitted by cable to a digital computer whose word length must be greater than 33 bits e.g., the BESM-3M or the M-220. The minimize transmission errors the information is coded in the Hamming code. The sensors are divided into 30 groups. Switching between sensors is done at two levels switching between groups, each having its own amplifier, and switching between individual sensors in these groups. Total time needed to sample all sensors is approximately 10 sec. The nonlinearity and instability of sensor amplifiers is compensated by the computer, which stores appropriate data in its memory and during each measurement cycle compares them with current information and resolves the discrepancies. Boolean equations describing this process are cited. Author

Subject Categories:

  • Computer Hardware
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE