DR. DAVID MARTIN ROBILLARD, DDS
Dentist in Tucson, AZ
License number
Arizona D009506
Category
Dentist
Type
Dentist
Address
Address
1601 N Tucson Blvd Office SUITE 11, Tucson, AZ 85716
Phone
(520) 419-5838
Professional information
Sr Principal Electronic Design Engineer At Raytheon Company
Location:
Tucson, Arizona Area
Industry:
Electrical/Electronic Manufacturing
Multi Channel Electronic Acceleration Switch
US Patent:
8412482, Apr 2, 2013
Filed:
Dec 3, 2009
Appl. No.:
12/630007
Inventors:
David C. Robillard - Oro Valley AZ, US
Gregory E. Longerich - Oro Valley AZ, US
Gregory E. Longerich - Oro Valley AZ, US
Assignee:
Raytheon Company - Waltham MA
International Classification:
G01P 15/00, G06F 15/00
US Classification:
702141, 307 101, 345157, 701 29, 701 46, 702151
Abstract:
An electronic acceleration switch, such as for arming and firing a squib, for instance used in arming a warhead, safe missile air, ground and sea launch separation arming, includes multiple redundancies to provide a fail-safe system that does not have a single-point failure. The switch includes different channels, each of which includes a power subsystem, multiple accelerometers, a pair of controllers, and a switching circuit. The power subsystems of the two channels provide power to multiple accelerometers of each channel. The accelerometers of each channel may include a mix of digital and analog accelerometers. The acceleration sensors can be either one-axis or three-axis sensors. The accelerometers are connected to the controllers of both channels. The controllers provide redundancy for each channel. In addition, the controllers include voting logic that receives inputs from the accelerometers, and determines whether to send arm and enable signals to the multiple squib drivers.
Data Filter
US Patent:
2013025, Sep 26, 2013
Filed:
Mar 22, 2012
Appl. No.:
13/426702
Inventors:
David C. Robillard - Tucson AZ, US
Joseph D. Wagovich - Tucson AZ, US
Joseph D. Wagovich - Tucson AZ, US
Assignee:
Raytheon Company - Waltham MA
International Classification:
G06F 13/14
US Classification:
710107
Abstract:
A system includes an interface with a plurality of sub-addresses. The interface receives critical data and non-critical data. The critical data are received only at more specific sub-addresses of the interface. The interface transfers the critical data received at the sub-addresses to a critical processor, such that the critical data avoids being received by or being processed by a non-critical processor. The interface transfers the non-critical data from the interface to the non-critical processor. The configuration of the interface is hard-coded such that the configuration of the interface is fixed at power up of the interface and is non-changeable by the non-critical processor. The interface includes an external platform interface that is external to the critical processor, the non-critical processor, and a local controller. The external platform interface includes a limited ability to store the critical and non-critical data.