| 摘要 |
<p>An alarm system for use by an operator of a plant is controlled by activating at least two of a multiplicity of alarm tiles on an alarm tile array such that each activated tile presents an activated descriptor 120 of the source of an abnormal condition in the plant so that the operator can respond to each activated alarm tile so each tile is in one of four statuses consisting of a new alarm associated with an abnormal condition and unacknowledged tile, an existing alarm associated with an abnormal condition and acknowledged tile, a cleared alarm associated with a normal condition and unacknowledged tile, and a reset alarm condition associated with a normal condition of an acknowledged alarm (not shown). A first, momentary audible tone is generated upon the activation of a new alarm; a second, momentary audible tone is generated upon the occurrence of a cleared alarm; and a third, periodically repeating audible tone is generated during a new alarm and a cleared alarm. <IMAGE></p> |
