SYSTEM FOR DETECTING AN EVOLUTION OF AN ENVIRONMENTAL PARAMETER

摘要

The invention relates to a system for detecting the evolution of an environmental parameter (1), comprising: - at least one detection module (12) including an LC resonant circuit responsive to an evolution of said environmental parameter, configured to operate, as a function of the value of said environmental parameter, either in a first mode, in which said resonant circuit has a resonance frequency within a predefined range for which the detection module is detectable by magnetic coupling by excitation in said range, or in a second mode, in which said resonant circuit has a resonance frequency outside said range or an absence of resonance frequency; - a declaration module (11) arranged in proximity to said detection module (12), configured to communicate without near-field contact even in the event of a variation in the value of said environmental parameter, and configured to declare the presence of the detection module.