PHYSICAL SECURITY SYSTEM HAVING MULTIPLE SERVER NODES CONFIGURED TO IMPLEMENT A CONDITIONALLY TRIGGERED RULE

摘要

A physical security system having multiple server nodes may be built as a distributed network. A first node of the system detects a trigger and a second node of the system detects an input signal that affects a condition to be satisfied prior to performing an action specified by the rule in response to the trigger. A condition evaluation node collects information permitting the condition to be evaluated, and when the condition is satisfied the system performs the action. The first, second, and condition evaluation nodes comprise part of a clustered system, and the condition evaluation node and the second node may be the same.

主权项

1. A method for implementing a conditionally triggered rule on a physical security system having a plurality of server nodes, the method comprising:
(a) detecting, at one of the server nodes (“first node”), a trigger for the rule; (b) detecting, at another of the server nodes (“second node”), an input signal affecting a condition to be satisfied prior to performing an action specified by the rule in response to the trigger; (c) collecting, at a single one of the server nodes (“condition evaluation node”), trigger information from the first node and condition information from the second node permitting the condition evaluation node to evaluate whether the condition is satisfied; (d) evaluating, at the condition evaluation node, whether the condition is satisfied; and (e) when the condition is satisfied, performing the action, wherein each of the first node, the second node, and the condition evaluation nodes comprise at least part of a server cluster and is each identified by a node identifier, wherein the node identifier for each of the first node, the second node, and the condition evaluation node comprises at least part of cluster membership information identifying all and accessible by all of the servers in the server cluster.