Page 172 - 捷運技術 第35期

164 KIN LING LEE An Advanced Command, Control And Communication (C3) Solution For Transit Systems

railway system. They can include standardized screens or custom GUIs for project specific
components.
Application Specific Agents

Agents are server side processes that integrate various subsystems and devices into the
OASYS C3 solution. All Agents implement a interface that allows other applications to query the
state of devices that the agent has access to and make requests for state changes on those devices.
Agents implements the business logic and conversion to the particular protocol required to
communicate with other subsystems.
Standard Core Components

At the core of the OASYS C3 solution are the standard components necessary for the
implementation of the basic functionality. These core components are responsible for:

˙launching GUIs

˙the data configuration
˙the archive function

˙the basic and group remote control general mechanisms
˙the alarm management function.

˙the event management functions
˙the severity levels

˙the time schedule programs
˙the trend logging functions

˙the system security
˙the avalanche filtering function

5.2 Operational Functionality

The following briefly describes some of the basic functionality necessary for the control
room operation.
5.2.1 Alarm Manager

The Alarm Manager is the primary user tool for viewing the detailed status of the system. It
displays all the alarms currently active in the system, giving the user a number of options for
dealing with the alarm condition.

5.2.2 Event Viewer
The Event Viewer provides the user with an overview of system activities. The list of events
can be filtered and sorted to only display events of interest.

5.2.3 Schematic Viewer
This system is responsible for the monitoring and control of various devices present in the
system. Data received from devices allows the system to determine that state of a given device,
while control information can also be sent to devices.

5.2.4 Trend Viewer