Intelligent ultrasonic system and rear collision warning apparatus for vehicle

An ultrasonic system of a vehicle comprising:

• a camera sensor unit configured to take an image of a road outside a vehicle;
• an ultrasonic signal input unit configured to receive at least a signal from one or more ultrasonic sensors mounted on the vehicle;
• a feature extraction unit configured to extract a feature of the received signal;
• a data collection unit configured to collect one or more data on at least one of wind, temperature and humidity;
• a storage device configured to store a plurality of sensor setting parameters for setting the one or more ultrasonic sensors;
• and
• a sensor control unit configured to set the one or more ultrasonic sensors with one of the sensor setting parameters that is determined based on one of vehicle surrounding classes;
• wherein, when the vehicle is driving, the sensor control unit is configured to:
• process the one or more data from the data collection unit to determine one of the vehicle surrounding classes based on the one or more data received from the data collection unit, and
• set the one or more ultrasonic sensors with one of the sensor setting parameters that corresponds to the vehicle surrounding class determined while the vehicle is driving,
• wherein, when the vehicle starts from the vehicle's turned off state, the sensor control unit is configured to:
• determine one of the vehicle surrounding classes based on the one or more data previously collected when the vehicle is turned off and further based on a time period between the vehicle's turning off and the vehicle's start without collecting data on at least one of wind, temperature and humidity at the time of the vehicle's start, and
• set the one or more ultrasonic sensors with one of the sensor setting parameters corresponding to the vehicle surrounding class determined at the time of the vehicle's start.