Page 90 - DCAP608_REAL TIME SYSTEMS

Unit 8: Working of Real-time Scheduling

Notes
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Case Study Real-time Vehicle Scheduling System

he real-time vehicle scheduling system (see Figure below) generates the vehicle
routing schedule by combining the projected plan provided by the simulation-
Tdriven planning system with information which provided by the monitoring
modules; this system include:
Traffic information includes traffic reports and estimated travel time of each travel course.
This module has a strong effect on travel time.
Level of stocks directly affects production flow, so it is very important. Shortage of stock
means loss of business opportunity. Vehicles, in the overage, cannot perform the next
schedule before unloading process so the efficiency of vehicles is decreased.
Real-time vehicle’s condition provides the vehicle’s location, whether it is loading or
unloading, and the items being loaded. It is needed to assign work to the appropriate
vehicle at the re-planning.

Monitoring Module tracks various data to estimate the throughput of the generated vehicle
routing schedule. It senses the changes of production plan and other unexpected occurrences
to adjust the generated schedule and determine whether re-planning process is necessary.
It is supported by other technology like RFID, which can measure travel time and waiting
time automatically
Questions:
1. Explain the concept of real-time vehicle scheduling system.

2. How do we schedule the traffic problem?
3. What is monitoring module means?

Source: orsc.edu.cn/apiems/public/Abstracts/315.doc

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