Safety system to prevent the leaving of a child in a motor vehicle

摘要

Safety system (1000) to prevent the return of a child in a vehicle, comprising:A device (150) which can be installed on a vehicle seat-back (100) or on a safety belt or on a seat-belt shoulder-belt with:A presence sensor (155) configured to detect whether the vehicle seat is occupied (100);A radio transmitter:(i) which is configured to transmit a radio signal within a predetermined transmission area;Functionally connected to the presence sensor (155) to receive from it a signal that the vehicle seat is occupied (100), with this presence information inserted into the radio signal; andOne or more warning signal reception devices (250, 250b, 270):"which are configured and adapted to detect the radio signal within the predetermined transmission range;which are configured to extract the presence information from the radio signal; andThe system is characterized by the fact that:the presence sensor (155) is a capacitive sensor;Each of the warning signal receiving devices (250, 250b, 270) shall be configured to activate the means of warning when:"first extracted the presence information; andShe then detected an interruption of the radio signal.