Safety system to avoid leaving a child in a motor vehicle

摘要

The provision relates to a safety system (1000) to avoid leaving a child in a motor vehicle comprising: - a device (150) which can be mounted on a car seat (100) or on a seat belt or shoulder strap including a presence sensor (155) configured to detect whether the car seat (100) is occupied and a radio transmitter configured to transmit a radio signal within a predefined transmit range and functionally connected to the presence sensor (155) to transmit therefrom receive a signal whether the car seat is occupied (100) and to enter presence information into the radio signal; and - one or more warning receivers (250, 250b, 270) configured and adapted to record the radio signal within a predefined transmit range; and configured to extract presence information from the radio signal; and which includes a warning transmitter. In the system of the generation, the presence sensor (155) is a capacitive sensor and each of the one or more warning receivers (250, 250b, 270) is configured to activate the warning transmitter when: - it initially extracted the presence information; and - it has then detected an interruption of the radio signal.