Z80 based voltage and temperature monitor for the Main Ring control crate: the CC48 card

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Description

Several years ago, there seemed to be a need to monitor the power supply voltages and temperatures in the three bay racks of the Main Ring service buildings. A few years ago, another engineer seemed to have done a preliminary design using analog voltage comparators. In late 1979, it was proposed to use a microprocessor instead of analog voltage comparators. It was dramatic that all the people at a meeting were excited about the idea and unanimously approved the project. The author can remember some of the reasons why they were so enthusiastic about the idea at the time, i.e., ... continued below

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Pages: 20

Creation Information

Seino, K. June 1, 1982.

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Description

Several years ago, there seemed to be a need to monitor the power supply voltages and temperatures in the three bay racks of the Main Ring service buildings. A few years ago, another engineer seemed to have done a preliminary design using analog voltage comparators. In late 1979, it was proposed to use a microprocessor instead of analog voltage comparators. It was dramatic that all the people at a meeting were excited about the idea and unanimously approved the project. The author can remember some of the reasons why they were so enthusiastic about the idea at the time, i.e., (1) it was new to have microprocessor based cards on the Main Ring control system, (2) programmable alarm limits were preferred to resistor dividers or potentiometers with analog voltage comparators, (3) it was the first to try the communication between a host computer and distributed intelligent cards. The author started the design on the CC48 in January, 1980 and completed in April, 1980. We had the prototype card working in July, 1980 and tested the card on the system in September, 1980. Seven CC48s of the pilot production were installed in July, 1981. We mass-produced 35 more cards and finished installing them around the Main Ring in May, 1982. The author talks about the hardware, software and operation on the CC48 card, and he will make some remarks on his experience on the project.

Physical Description

Pages: 20

Notes

NTIS, PC A02/MF A01; 1.

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  • Other Information: Portions are illegible in microfiche products

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  • Other: DE85003346
  • Report No.: FNAL-TM-1120
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/6220071 | External Link
  • Office of Scientific & Technical Information Report Number: 6220071
  • Archival Resource Key: ark:/67531/metadc1111000

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 1, 1982

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • May 9, 2018, 6:35 p.m.

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Seino, K. Z80 based voltage and temperature monitor for the Main Ring control crate: the CC48 card, report, June 1, 1982; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc1111000/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.