Capteurs VEDIF

Verbatim in Cagnes-sur-Mer



Nice Côte d’Azur is an innovative and connected city. It seeks to optimise the inclusion of environmental aspects in local developments and policies in order to preserve its natural heritage. Public lighting is an essential aspect of this strategy, which aims to meet both the economic and environmental challenges, without giving in to security or comfort issues. Traditional solutions to check the effectiveness of the measures implemented can be costly as they demand a large number of specialised workers over long periods.


A tool for measuring biodiversity automatically was developed by 2EI in partnership with the Muséum National d’Histoire Naturelle. This solution relies on the use of a network of sound sensors and biodiversity indicators based on the real-time analysis of bat populations over the territory observed. Using this solution makes it possible to measure the effect of developments, infrastructures, public fixtures, etc. on urban biodiversity. In this case, it makes it possible to qualify and quantify the impact of changes in lighting periods on ecosystem health, even over short periods.

Microchiroptera use ultrasounds to construct a mental image of their environment


Automated monitoring makes it possible to conduct this type of monitoring at a controlled cost. The data produced is of high-quality (compliant with the MNHN’s scientific standard) and the protocol is strictly repeatable / reproducible. The analysis campaign, which required 5 sensors over 2 1/2 months, showed a positive impact of the new policy on bats and birds.