Browse Prior Art Database

Optimized Power Data Processor

IP.com Disclosure Number: IPCOM000100849D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 6 page(s) / 187K

Publishing Venue

IBM

Related People

Plat, ES: AUTHOR

Abstract

The Optimized Power Data Processor (OPDP) is a multichannel power data gathering and processing subsystem. It collects information on system's voltages and currents. The data processing includes: offset correction, PS current summation (for the PS groups), threshold monitoring, maintenance of the present system operating data, maintenance of the system logout data, fault violation and optional periodic gain adjustment.

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This is the abbreviated version, containing approximately 48% of the total text.

Optimized Power Data Processor

       The Optimized Power Data Processor (OPDP) is a
multichannel power data gathering and processing subsystem.  It
collects information on system's voltages and currents.  The data
processing includes:  offset correction, PS current summation (for
the PS groups), threshold monitoring, maintenance of the present
system operating data, maintenance of the system logout data, fault
violation and optional periodic gain adjustment.

      Large computer systems consist of various functional elements:
Central Processors (CPs), Instruction Control Element (ICE), Extended
Storage Element (ESE), System Control Element (SCE), Vector,
Channels, etc.).  Each of those functional elements is being powered
by a number of power supplies.  The power supply currents and
voltages are being monitored and controlled to assure safe operation
of the large computer system.  The monitoring and control is
performed by the Power Thermal Stations (PTSs).  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 Field Replaceable Units (FRUs).

      Fig. 1 presents a second level diagram of the OPDP. OPDP
consists of the two major parts; Analog Switch (Fig. 1A) and Digital
Controller (Fig. 1B).

      The Analog Switch performs selecting a point to be read, signal
conditioning (i.e., amplification), sampling a signal at an instant
mandated by the Digital Controller, and digitizing sampled readings
and passing their values to the Digital Controller.  The Analog
Switch consists of the Precision Voltage Reference (used as a full
scale reference), Analog Multiplexer (brings in multiple channels),
instrumentation amplifier (optional PGA - performs signal
conditioning), and sample hold + A/D for optional Gain Adjustment
(samples and digitizes analog readings).

      The Digital Controller controls the OPDP and processes
digitized information.  The Digital Controller consists of a clock
(100 ns), a Digital Signal Processor (DSP) for control sequencing,
ALU and error reporting, a dual-port static RAM for thresholds,
channel values, and logout data, and a microcontroller and bus
control for DSP control, diagnostics, and external communications.

      The Digital Signal Processor (DSP) is the "major workhorse" in
the Digital Controller portion of the OPDP. The DSP does analog
switch control and diagnostics, offset correction, PS current
summation (for PS groups), threshold monitoring, and error reporting.

      Fig. 2 presents a second level diagram of the ALU portion of
the DSP.

      Fig. 3 presents a second level diagram of the Sequencer portion
of the DSP including Control Store Table (CX).

      ALU, Control Store On the first p...