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2016 ITU Kaleidoscope Academic Conference

The splash page works dynamically as it has an algorithm Type: Li-NMC
that reads recent air quality measurements and shows the Capacity: 168 Wh
related information to the user. NoDogSplash also allows to Current: 15.6 Ah
set some QoS (Quality of Service) variables in order to
control de bandwidth available to the user. The algorithm
establishes bandwidth rates that can be used in concordance Each node also includes a 12 W LED lamp in order to
to the air pollution levels, rewarding those areas that reduce the electrical consumption devoted to lighting the
manage to reduce pollution and penalize those with high areas with CleanWiFi nodes.
pollution levels. Figure 4 shows the algorithm logic.
Table 1 shows the electrical consumption from each of the
nodes components.

Table 1. Electrical consumption.

Component Consumption
Router 5.5 W max / 460 mA
Air measurement 1.2 W max / 240 mA
LED lamp 12 W max / 1A

The capacity of the electrical supply system ensures that
each node will operate at a full capacity with solar energy
and also during night-time with an autonomy of:

Figure 4. Flowchart of the captive portal control algorithm Up to 16 hours with the air quality measurement system and
wireless communications active, and the LED lighting
system inactive.
Up to 6.5 hours with all systems active, including the LED
lighting system.
Considering the flexibility of this system, it is possible to add
movement sensors to reduce the electrical consumption by
deactivating the LED lighting system on the node when
there is no people around.

4. STANDARDIZATION OF MEASURING
NETWORKS AIR QUALITY FOR PEDESTRIANS

The results of this study will allow contribute to
recommendations for building networks to monitor air
Figure 5. A splash page displaying a Nitrous Dioxide pollution in order to have a model that can be fed from
contamination alert. many points on the planet and can contribute to an
information model that collect and analyze large amounts of
Figure 5 shows a regular splash page as seen from a information in order to create a knowledge base to develop
policies and practices according to the objectives of
smartphone. sustainable development.

3.3. Lighting and supply systems. ITU-T Study Group 20 is currently studying the
“Requirements of the network for the Internet of Things”.
This paper is consistent with the definitions and structures
The electrical supply system on each node is equipped with raised to ensure that there is harmonious with future
a solar panel and a rechargeable battery. recommendations.
The solar panel has the following specifications:
Maximum power: 60W 4.1. API - Application Programming Interface
Open-circuit voltage: 22v
Material: Monocrystalline silicon Study Group 20 defines the local network IoT as a network
of devices for the IoT and gateways interconnected through
local connections. [11]; In draft recommendation it’s
The battery has the following specifications: proposed a first API focused on the physical layer transport

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