La Montre Verte

La Montre Verte

Measuring the Green City Pulse

The “Montre verte (green watch)/ Citypulse” project serves one simple objective: to multiply by 1,000 the number of urban environmental sensors and to associate directly the inhabitants to the construction of a sustainable city by involving them to the environmental measurement.

The object: The “green watch” Green watch is a familiar, aesthetic and daily object, which comprises a watch, a GPS chip, a CO2 sensor and a noise sensor. At pre-scheduled intervals or on request the watch takes measurements and records them. These “low resolution” measurements make it possible to use light maintenance-free sensors: for example, they will indicate if the quality of the air is either “good”, “correct” or “bad”.

The mobile phone: These are quantitative values returned to the user via the screen of her/his mobile phone and displayed as an eye the colour of the pupil of which varies as a function of the quality of air, and that of the iris as a function of the noise level. Finally, via the mobile phone the watch communicates its measurements to a joint platform either in real time (via the mobile of the watch holder), or at night through synchronization (like an iPod).

The platform: Citypulse The platform stores all the measurements which are transmitted to it, time stamped and geolocalized. The platform makes the data available to whoever wants to exploit it and is committed to respect an ethical charter. These exploitations can be public (ex. mapping, identification of “hot spots”, public discussions), citizen-minded (alarms, alternative analyses…), artistic or commercial (ex. services to asthma patients). These open specifications will enable it to host other measurements coming from other devices, regardless of their origins.

Open, common steering and observation The ultimate purpose of the project is to modify the way a “sustainable city” could be envisaged. Therefore, the project will associate de facto the public players, the businesses and community groups. Together they will define the governance of the system, its success criteria and its mode of use. Together they will analyze the impacts of the experience, from an observation carried out by a university laboratory.


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