Group:
user interface
Topic:
color in user interfaces
Topic:
display console as a user interface
Topic:
logging data and events
Topic:
monitored variable
Topic:
voice and sound as a user interface
| |
Summary
All control systems have alarm conditions which call for human intervention. These alarm conditions may be equipment breakdown, dangerous temperatures or pressures, security violations, or system failures. Traditional control systems have an alarm panel using horns and flashing lights to indicate an alarm occurrence. Larger plants replace the alarm panel with one or more display consoles providing visual indication of alarm status. Alarm occurrence and recovery should always be logged for later review. (cbb 5/80)
Subtopic: alarms 
| Quote: flashing lights and audible warnings are the best way to convey the urgency of a critical alarm [»controleng]
| | Quote: use ALARM STATUS program to show the status of all system alarms at once; high alarms use visual and auditory annunciation [»instrumentcontrol]
| | Quote: a process control operator monitors for rare events; display for pattern recognition, e.g. circular spokes if all ok [»dallR1_1982]
|
Subtopic: false alarms
Quote: built-in warning signals may go off in error, disrupt proper behavior, conflict, distract, and be inconvenient; e.g., automobile buzzers
[»normDA_1988]
|
Related Topics
Group: user interface (75 topics, 1633 quotes)
Topic: color in user interfaces (7 items)
Topic: display console as a user interface (10 items)
Topic: logging data and events (16 items)
Topic: monitored variable (27 items)
Topic: voice and sound as a user interface
(26 items)
|
