A Design Pattern Language to Assist the Design of Alarm Visualizations for Operating Control Systems
A set of incoming alarms has been registered. The human operator would like to both detect and distinguish them from alarms that have been accepted.
The human operator needs to be made aware of new incoming alarms, which have not been accepted yet.
Show new incoming alarms that require discrimination by using differences in brightness. Brightness coding should not be used in conjunction with shape or size coding. High brightness levels should be used to signify information of primary importance, and lower levels should be used to signify information of secondary interest.
Colour brightness allows highlighting properties in data (Few, S. (2010). Bullet graph design specification. Perceptual Edge-White Paper)