Control of equipment using credentials

专利名称：Control of equipment using credentials发明人：William D. Drotning申请号：US09875242申请日：20010605

公开号：US20030014779A1公开日：20030116

专利附图：

摘要：An apparatus allows workers to assert and release control over theenergization of a system. The apparatus does not require the workers to carry anyadditional paraphernalia, and is not be easily defeated by other workers. Users assertingand releasing control present tokens uniquely identifying each user to a reader, and the

apparatus prevents transition of the system to an undesired state until an appropriatenumber of users are currently asserting control. For example, a dangerous manufacturingrobot can be prevented from energizing until all the users that have asserted controlwhen entering the robot's controlled space have subsequently released control whenleaving the robot's controlled space.

申请人：DROTNING WILLIAM D.

更多信息请下载全文后查看