Browse Prior Art Database

Power Thermal Function Generator

IP.com Disclosure Number: IPCOM000119376D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 4 page(s) / 113K

Publishing Venue

IBM

Related People

Osowiecke, G: AUTHOR [+2]

Abstract

Power Thermal Function Generator (PTFG) is an attempt to perform functional testing on the whole Power Thermal (P/T) section of the large computer system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Power Thermal Function Generator

      Power Thermal Function Generator (PTFG) is an attempt to
perform functional testing on the whole Power Thermal (P/T) section
of the large computer system.

      PTFG fences the original Current (I), Voltage (V) and
Temperature (T) sensor set from the P/T system and substitutes those
sensors with its own microcontrolled set of the I, V and T output
ports.

      PTFG allows to exercise P/T System with the predetermined
sequences of the P/T events (over-currents, under-voltages,
over-temperatures, etc.).

      PTFG can be perceived as a 'Signature Analysis' approach to the
P/T System testing. Background Information

      Large computer systems consist of various functional elements.
Each of those functional elements is being powered by a number of
power supplies and cooled by chilled water for forced air.

      Three major P/T environmental conditions are being monitored
and controlled to assure safe operation of the large computer system:
-    Current
-    Voltage
-    Temperature

      The monitoring and control is performed by the Power Thermal
Stations (PTs).  In the case of the P/T threshold violation
functional element exhibiting a fault is usually powered-off.  After
that the state of the P/T System is logged out and Analysis Routines
are being run to determine what had happened and what action should
be taken.  Usually Analysis Routines come up with the list of
recommended replacement parts (FRUs). Implementation

      Fig. 1 presents a diagram of the Power Thermal Function
Generator.

      The major elements of the PTFG are:
      -    Microcontroller          -    PTFG control
      -    Bus controller           -    Communication with the
Proces                                        sor Controller Element
(PCE)
      -    Static RAM               -    P/T pattern storage
      -    Current DAC ports        -    Current sensor emulators
 -    Voltage DAC ports             -    Voltage sensor emulators

      -    Temperature programmable -    Temperature sensor emulators
resistor ports

      All of the Sensor Emulator Ports are Double Latched. Do...