IEEE Electrification - September 2019 - 42

Time (min)

150

80

100

60

50

40
20

Truck 1
Truck 2
Truck 3
Truck 4
Truck 5
Truck 6
Truck 7
Truck 8
Truck 9
Truck 10
Truck 11
Truck 12
Truck 13
Truck 14
Truck 15
Truck 16

0

Time (min)

100

0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
(b)

(a)
20

Total Time (h)
Conventional
Smart

15
10
5
0
(c)

Figure 20. The time spent durng (a) the conventional scenario and (b) the smart scenario. (c) The total of both.

output of the smart solution with the conventional solution and demonstrated how the IoT can benefit the overall
process in waste transportation.

Scenario 1: Waste Collection
In the first simulation scenario, it is assumed that each
truck can serve up to five full dumpsters. The trucks are

Recycling Plant

Recycling Plant

Figure 21. The waste recycling simulation.

42

I E E E E l e c t r i f i cati o n M agaz ine / SEPTEMBER 2019

GPS enabled, and they must start at and return to the
central depot. One full cycle starts from the central
depot. The trucks visit the dumpsters to collect solid
waste, move on to the landfill for emptying, and return
to the central depot. In the conventional solution, all
dumpsters must be emptied within a given time window using a finite fleet parked at the central depot (the
CDA). In a smart solution, we use
a threshold of 50% (i.e., if any of
the red, blue, or green bins are
50% full, those bins will be selected for pickup). Figure 18 gives an
overview of the simulation model
on a map of Islamabad, where the
dumpsters are positioned at different places according to the
input data. The current volume of
each bin in the dumpster is
shown using a bar chart, where
the bar color corresponds to the
bin color.
The results of both solutions
are shown in Figures 19 and 20.
Figure 19 demonstrates the disRecycling Plant
tance covered, and Figure 20 indicates the travel time. It can be
seen that, with the conventional
solution, 16 trucks traveling a total
of 610 km take about 18 h, whereas the same waste collection can
be managed using 11 trucks that
travel a total of 380 km and take
approximately 10 h.



IEEE Electrification - September 2019

Table of Contents for the Digital Edition of IEEE Electrification - September 2019

Contents
IEEE Electrification - September 2019 - Cover1
IEEE Electrification - September 2019 - Cover2
IEEE Electrification - September 2019 - Contents
IEEE Electrification - September 2019 - 2
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