Rocking device and control system and method thereof

Rocking device comprising: a removable child restraint device (104, 204, 224); at least one pivotally connected to a support frame rocking arm (116, 118), said rocker arm (116, 118) is suitable for the child restraint device (104, 204, 224) to impart a rocking motion; and a detector (160, 404) which is adapted, information about the child restraint device (104, 204, 224) provide that is mounted on the rocking device.