The SmartCity is the final project delivered for the IoT course. The goal for the project was to propose and develop an idea based on the californium framework (a powerful Eclipse implementation of the CoAP protocol)
The proposed and developed idea was the following: to simulate an ideal smart city covered with various sensors that would allow a potential user to interact with them in different ways for different services
(For a more detailed description please refer to the proposal)
It is represented as an acyclic graph where each node has the following sensors:
- Air sensors: each air sensor is mounted on a node and has four parameters monitored:
- pm 2.5: monitors pm2.5 pollution, fixing both a
warningand adangerlevel - pm 10: like the preous ones, but for pm10 pollution
- Temperature: monitors the temperature, having only a
warninglevel - Humidity: monitors the humidity
- pm 2.5: monitors pm2.5 pollution, fixing both a
- Stores sensors: keeps track of how much a store (there exists different sotre types, e.g. bakery or pharmacy) is crowded
- Traffic sensors: keeps track of how much a "road" (i.e. an arch) is crowded
The Client can do different actions:
- Book a place in a store: the user selects a store to book a place in and if the store is not too crowded basing on the store sensors (imagine the typical covid-situation with a max amount of people allowed in a store) a place is reserved
- Request in every moment for weather information: in two different ways:
- Aske for air quality and temperature
- Subscribe for regular updates in case of warning values in selected sensors (this is obtained using the
Observe()CoAP option)
- Find the best store for a selected type basing on their position: if the user, f.e., wants to reach a bakery store from the node 10 the client mixes the information about the user position (a node on the graph), the traffic sensors information and the store sensors information to apply the Dijkstra algorithm to the city graph and rank all the slected type of store basing on how crowded they are and how trafficked is the path to reach them
