| 摘要 |
<p>A weight-sensitive mat (22) or other sensor determines whether a child seat (12) in a vehicle is occupied, a transmitter (30) is proximate to the sensor, and a keychain fob (40) or other portable unit includes a receiver (900) and an alarm. Generally, if the child seat (12) is occupied and the keychain fob (40) is removed from proximity to the transmitter, the transmitter communicates this to the keychain fob receiver and the alarm is activated. Exemplary embodiments include an add-on kit (10) including a base unit (30) with a transceiver for use with existing car seats having a base and a detachable shell, an add-on kit without the base unit for use with existing unitary car seats, and a car seat with the child sensor (22), transmitter, and/or base unit built into it.</p> |
