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Sound Transit Light Rail. Downtown Seattle Transit Tunnel (DSTT). Communication Challenges. The Downtown Seattle Transit Tunnel (DSTT) presents a significant communications challenge: Passengers, buses, and trains must interact efficiently and safely.

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Presentation Transcript
slide3

Communication Challenges

  • The Downtown Seattle Transit Tunnel (DSTT) presents a significant communications challenge:
    • Passengers, buses, and trains must interact efficiently and safely.
    • Using multiple stations, buses and trains must share the same roadbed.
    • And everyone needs to know what is happening and when.
communication solutions

Fiber

Optic

Public

Address

Integration

End Result

Closed

Circuit

Television

Telephone

LED

Signage

Operation

Control

Centers

Security and

Surveillance

SCADA

Communication Solutions
  • Integration of all communication systems, and a design for high availability, enables Sound Transit to meet their communication challenges.
backbone wan
Backbone/WAN
  • Provides the communications infrastructure for:
    • Field Control System (FCS)
    • Central Control System (CCS)
    • Public Announcement and Visual Message Sign (PA/VMS)
    • Closed Circuit Television (CCTV)
    • Emergency/Office Telephone System
    • Access Control System (ACS)
backbone wan1
Backbone/WAN
  • A bi-directional, high bandwidth fiber optic SONET Ring/Wide Area Network (WAN) provides timely, reliable, and accurate voice, video, and data communications between Sound Transit stations and control centers.
  • Redundant: fire or other catastrophic events cannot destroy both communications paths or disconnect any more than one Station or facility from communications with either the King County Metro Link Control Center.

Break

central control system map
Central Control System Map
  • The CCS displays an icon-based map across multiple screens. Operators can monitor and access devices in all stations throughout the DSTT.
central control system ccs1
Vehicle communications

Traction electrification system

Intrusion detectors

Fire alarms

EMPs

Station electrical equipment

Fare collection equipment

Flood detectors/sump pumps

Communications equipment

Radio amplifiers

Access control devices

Fire suppression system

Central Control System (CCS)

Monitors:

Monitors and Controls:

  • Tunnel ventilation equipment
  • Station ventilation equipment
  • CCTV
  • Signal system devices
  • Emergency telephones
  • PA/VMS
  • Station lighting
  • Elevators/Escalators
field control system fcs
Field Control System (FCS)
  • The Field Control System is the bridge between DSTT devices and the Central Control System.
  • It collects information from networking, monitoring, and control devices.
  • It relies on many Programmable Logic Controllers (PLCs) for routine tasks.
  • The PLCs “talk” to a field server.
  • An Emergency Management Panel can communicate directly with the PLC system if the main communications backbone is disabled.
field control system fcs1

CCS

ACS

EMP

ICC

CommunicationsBackbone/Wan

Field Control System (FCS)

Field Control System

Bus PLCs

Ventilation PLCs

Field Servers

FACP

field control system fcs2
Field Control System (FCS)
  • FCS Interfaces with:
    • Central Control System
    • Integrated Communications Controller
    • Emergency Management Panel
    • Fire Alarm Control Panel
    • Access Control System
    • Tunnel Ventilation System
emergency management panel emp
Emergency Management Panel (EMP)

An Emergency Management Panel (EMP) can request control of the Downtown Seattle Transit Tunnel communications system in an emergency situation. EMPs are located at station surface or mezzanine level entry points

emergency telephone system
Emergency Telephone System

ICC Workstation provides Telephone Control

  • Phones located throughout the Light Rail system.
  • Direct access to an ICC workstation or emergency operator.
  • Calls are recorded.
  • Emergency Telephone (ETEL) – Non-Public Access
  • Passenger Emergency Telephone (PET) – Public Access
emergency telephone etel
Emergency Telephone (ETEL)

Blue Beacon

Paging Speaker

networks
Networks
  • Control System Network (CSN): uses the Network Management System (NMS) and a series of virtual LANs to monitor/control devices and manage emergency telephones, PA/VMS, and CCTV
  • Office Services Network (OSN): manages public telephone, maintenance, and general computing – separated from CSN for security