| 摘要 |
PROBLEM TO BE SOLVED: To provide a safety system and method configured to determine whether or not a passenger room of a vehicle is occupied and whether or not the temperature of the passenger room is out of an allowable temperature range, and take safety measures as needed.SOLUTION: An occupant 12 is detected with a sound received by an audio transducer of a passenger room 14 connected to an information entertainment system. A temperature is detected by a temperature sensor 26 connected to a heating, ventilation, air-conditioning system of the vehicle. For example, safety measures include operating a horn 40, transmitting a radio signal indicating that an unaccompanied occupant is in the vehicle to a remote receiver, and/or at least partially opening a vehicle window 44. A pair of high frequency speakers connected to the information entertainment system may be used for transmitting/receiving an ultrasonic signal. Consequently, the occupant can be detected by using an ultrasonic operation detection technique.SELECTED DRAWING: Figure 1 |
