Defect reduction of automatic fare collection system for a new MRT monorail line using DMAIC
|
Full Text |
Pdf
|
|
Author |
Tossapol Kiatcharoenpol, Kewalin Pratalab and Sakon Klongboonjit
|
|
e-ISSN |
1819-6608 |
|
On Pages
|
1173-1180
|
|
Volume No. |
19
|
|
Issue No. |
18
|
|
Issue Date |
December 14, 2024
|
|
DOI |
https://doi.org/10.59018/092447
|
|
Keywords |
automatic fare collection system, banknote acceptor, quality problem solving, DMAIC.
|
Abstract
The objective of this research is to examine and address issues related to the quality of the automatic fare collection system for the new Mass Rapid Transit (MRT) line and to decrease maintenance time to meet the key performance indicator (KPI) set by the Mass Rapid Transit Authority (MRTA). A total of 1,497 work orders were collected from a survey conducted between June and August 2023. The study utilizes the DMAIC methodology and identifies the primary issue as "Note Module Faulty" commands on the Ticket Vending Machine (TVM), particularly for cash transactions where banknotes become stuck in the banknote acceptor (BNA) section, resulting in transaction failures. After conducting a root cause analysis, it was determined that the problem stemmed from the inadequate design of the banknote acceptor for the new polymer banknotes, Biaxially Oriented Polypropylene (BOPP) film. Following the resolution of the problem, it was noted that the daily influx of work orders follows an exponential decay trend, represented by the equation Yt = 3.525x(0.97803t), and the maintenance time has decreased from 62 minutes per work order to 9.27 minutes per work order.
Back