APM control system gets digital makeover
By A.B. Snedeker

Improved service and reliability for passengers are the results of a recent digital upgrade of the computerized system that controls the Airport’s automated people mover (APM). The first phase of the project is in the final stages of system certification and replaces the 30-year-old analog automated train control (ATC) equipment with the latest digital components.

“The ATC system replacement project preserves the high reliability of our mature APM system,” explained Steve Poerschmann, director of aviation transportation systems.

The first phase of the APM’s ongoing digital makeover replaced cable trays and conduit, electronic relays, servers and miles of wiring between baggage claim and Concourse D.

“We’ve started phase two, which will digitize the system to Concourse E and include the main Central Control room,” Poerschmann added.

Because many parts for the analog system no longer are readily available — and require special training to install — the digital upgrade will reduce maintenance costs for both labor and materials. It also sets the stage for homogenous digital communications throughout the system as managers prepare to expand the people mover to the Maynard H. Jackson Jr. International Terminal, which is under construction and scheduled to open in spring 2012.