This is the repo of International Competition On Embedded Systems workshop
You can explore the circuit HERE
A smart city is a place where traditional networks and services are made more efficient with the use of digital solutions for the benefit of its inhabitants and business.
A smart city goes beyond the use of digital technologies for better resource use and less emissions. It means smarter urban transport networks, upgraded water supply and waste disposal facilities and more efficient ways to light and heat buildings. It also means a more interactive and responsive city administration, safer public spaces and meeting the needs of an ageing population.
As we can see from the Smart City definition, the main goal is to have a safer and cleaner city.
A way to achieve that is by monitoring the CO2 in the air and using using less resources, turning lights down when we do not need them or limiting car traffic when the CO2 levels are too high.
A really important factor is to understand when and why some levels are too high, so a method to fix too high CO2 values is by logging whenever there is an event, to analyze the data later.
We can monitor the air quality via a CO2 detector:
And we can control it via the code:
Of course, we need a way to interface with the circuit:
When the air gets gradually worse, a bunch of LEDs gradually turns on;
on the last stage, when the air is not safe, a PIEZO starts beeping, acting as an alarm.
We could use a circuit to turn off road lights when there is no one near by, to save electricity.
This goal is achieved by using an array of standalone sensors:
Every sensor is powered by a Solar Cell, to save even more power.
Anyway, the first sensor is connected to the Controller (arduino) to know when a car passes by.
We need this feature to LOG the event:
Whenever a car passes by, it's identified as an event, and a Logger saves it.
We should save events (logs) to a file or a database, but TinkerCad does not have this function yet.
We instead simply print to a console the log in a json form:
We can see how the log will be written:
Logs are a very powerful tool, in this case we have a simple scenario, but we could use them to know when a road is busiest, and act accordingly.