Patent ID: 8058983
Filing Date: 2011-11-15
Classification: B60N,G08B,H04Q

Abstract:
1. A baby seat occupant detection system comprising: a base unit for installation inside a vehicle adjacent to a baby seat, the base unit having a base unit microprocessor, a base unit transmitter electrically connected to the base unit microprocessor for transmitting signals, and a base unit receiver electrically connected to the base unit microprocessor for receiving signals; a baby sensor for detecting the presence of a baby seat occupant, the sensor adjacent the baby seat and in communication with the base unit; a portable remote unit in communication with the base unit having a remote unit microprocessor, a remote unit transmitter electrically connected to the remote unit microprocessor for transmitting signals to the base unit, and a remote unit receiver electrically connected to the remote unit microprocessor for receiving signals from the base unit; a counter for measuring the distance between the base unit and the remote unit electrically connected to the base unit, the counter set to zero and initiated concurrently when a first distance signal is transmitted to the remote unit by the base unit transmitter, the counter stopped when a return distance signal generated by the remote unit and transmitted to the base unit is received by the base unit receiver thereby generating a count, the count for comparing to a preset count to determine whether the distance between the base unit and the remote unit is acceptable; a remote unit alarm in communication with the remote unit for providing notice of alarm conditions in the vicinity of the remote unit, the remote unit alarm activated when the count exceeds the preset count; and a signal edge detector electrically connected to the base unit receiver and the counter, the signal edge detector stopping the counter when the return distance signal is received by the base unit receiver thereby bypassing the base unit microprocessor and reducing the error in the distance measurement caused by processing time.