Michael D Robillard

US Patent:

7298167, Nov 20, 2007

Filed:

Jun 24, 2005

Appl. No.:

11/166822

Inventors:

Timothy Dorr - North Attleboro MA, US
Michael N. Robillard - Shrewsbury MA, US
Louise Schwabe - Sterling MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G01R 31/36
G01R 31/26
G01R 31/00
G01R 19/00

US Classification:

324771, 324767, 324522, 702 58, 702 64

Abstract:

A system for detecting a fault in a power supply having at least one power supply unit and a redundant power supply unit. The system includes a printed circuit board and a common voltage bus disposed on the printed circuit board. A plurality of diodes is disposed on the printed circuit board having first electrodes connected to the common voltage supply bus. The diodes have second electrodes connected to a corresponding one of the at least one power supply unit and the redundant power supply unit. The diodes are connected to the common bus in a logic OR configuration. A controller, disposed on the printed circuit board, is fed by a voltage at the second electrode of a corresponding one of the diodes and a reference voltage for determining whether the voltage at the second electrode of the corresponding one of the diodes is producing a predetermined voltage relative to the reference voltage.

US Patent:

7988063, Aug 2, 2011

Filed:

Jun 30, 2008

Appl. No.:

12/165220

Inventors:

Daniel Savilonis - Brookline MA, US
John Kevin Bowman - Brighton MA, US
John V Burroughs - East Sandwich MA, US
Michael Robillard - Shrewsbury MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

F24F 7/00
H02B 1/00
G06F 1/00

US Classification:

236 493, 361678, 36167946, 36167948

Abstract:

A system having: a midplane having air flow channels therein; a disk drive mounted to a first side of the midplane; and a temperature sensors mounted to the midplane. The system includes a pair of electrical chassis connected to a second side of the midplane. A first one of the chassis has therein: a fan; and a fan controller for controlling speed of the fan in response to a temperature control signal. A second one of the chassis has therein: a microprocessor for: detecting temperature signals produced by the temperature sensors; comparing differences between the detected temperature signals; and selecting one of the detected temperature control signal from the compared differences as the temperature control signal. A faulty one of the temperature sensors is detected by: selecting one of the detected temperature control signal as the faulty one of the plurality of temperature sensors from the compared differences.

US Patent:

8589729, Nov 19, 2013

Filed:

Sep 28, 2007

Appl. No.:

11/864094

Inventors:

Jason Pritchard - Hopkinton MA, US
Himanshu Agrawal - Cambridge MA, US
Michael Robillard - Shrewsbury MA, US
Robert Beauchamp - Milford MA, US

Assignee:

EMC Corporation - Hopkinton MA

International Classification:

G06F 11/00

US Classification:

714 14

Abstract:

A data preservation device includes a circuit board configured to be positioned within a memory module slot of a computing device and releasably engage a memory bus of the computing device. A non-volatile memory storage device is electrically coupled to the circuit board. A control circuit is electrically coupled to the circuit board and is configured to read a data portion from the computing device and write the data portion to the non-volatile memory storage device during the occurrence of a power failure event on the computing device. An independent power supply is configured to power the data preservation device during the power failure event.

US Patent:

20110290894, Dec 1, 2011

Filed:

Jul 11, 2011

Appl. No.:

13/180341

Inventors:

Daniel Savilonis - Brookline MA, US
John Kevin Bowman - Brighton MA, US
John V. Burroughs - East Sandwich MA, US
Michael Robillard - Shrewsbury MA, US

International Classification:

F24F 7/00
G06F 1/20

US Classification:

236 493

Abstract:

A system having: a midplane having air flow channels therein; a disk drive mounted to a first side of the midplane; and a temperature sensors mounted to the midplane. The system includes a pair of electrical chassis connected to a second side of the midplane. A first one of the chassis has therein: a fan; and a fan controller for controlling speed of the fan in response to a temperature control signal. A second one of the chassis has therein: a microprocessor for: detecting temperature signals produced by the temperature sensors; comparing differences between the detected temperature signals; and selecting one of the detected temperature control signal from the compared differences as the temperature control signal. A faulty one of the temperature sensors is detected by: selecting one of the detected temperature control signal as the faulty one of the plurality of temperature sensors from the compared differences.

US Patent:

58092200, Sep 15, 1998

Filed:

Jul 20, 1995

Appl. No.:

8/504941

Inventors:

Brian D. Morrison - Hopkinton MA
Creig E. Wienke - Holliston MA
Martin R. Batten - North Grafton MA
Michael N. Robillard - Shrewsbury MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G06F 1100

US Classification:

3951821

Abstract:

A fault tolerant distributed intelligence control system for sensing and control across fault tolerant fiber optic communication media interconnecting a plurality of intelligent nodes. Each intelligent node comprises a digital control and communication processor (DCCP) operating autonomously in relation to DCCPs at other nodes, and a transceiver for interfacing with the communication media. The fiber optic communication media comprises bi-directional serial data buses. The combination provides a low cost highly reliable distributed control system particularly applicable to primary and secondary aircraft control systems, as well as to other vehicle and control systems.

US Patent:

57969353, Aug 18, 1998

Filed:

Jul 20, 1995

Appl. No.:

8/504942

Inventors:

Brian D. Morrison - Hopkinton MA
Martin R. Batten - North Grafton MA
Michael N. Robillard - Shrewsbury MA
Creig E. Wienke - Holliston MA

Assignee:

Raytheon Company - Lexington MA

International Classification:

G06F 1118

US Classification:

39518209

Abstract:

An intelligent voting node for a multiple node, fault tolerant, distributed intelligence control system having a plurality of optically isolated relays for connecting a power source to a load device and providing total optical isolation for processors of the voting node from faults occurring in the power source. The voting node includes triple redundant two-out-of-three voters each coupled to one of three redundant digital communication and control processors within the node. Built-in-self-test capability using optically isolated receiver devices provides for avoidance of latent failures.