The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2016
Filed:
Mar. 13, 2012
Rodney B. Washington, Raleigh, NC (US);
Pierre Colle, Saint Martin d'Uriage, FR;
Rodney B. Washington, Raleigh, NC (US);
Pierre Colle, Saint Martin d'Uriage, FR;
SCHNEIDER ELECTRIC USA, INC., Schaumburg, IL (US);
Abstract
A data synchronization method and apparatus are provided for a distributed control system where multiple controllers can control a plurality of actuators or sensors. The actuators or sensors are assigned to logical groups that share a common state. One of the actuators or sensors within a logical group serves as a reference device for a state variable. Before taking a control action, the controllers read the current value of the state variable from the reference device. Data synchronization is maintained by one or more refresh master controllers.