Ultrasonic distance measuring device and method with parking assistance and lane change assistance

摘要

The invention relates to an ultrasonic distance measuring device,The ultrasonic sensor is installed on the side and back of the car to improve the distance measurement accuracy between the remote bumper and the object, and to give an alarm below a certain distance,The sensor part installed at both ends of the bumper is also activated when the second lane is changed, and the objects in the four corners of the rear-view mirror are observed, so as to help the parking aid for lane change and the ultrasonic distance measuring device and method with lane change assist function.In the existing ultrasonic distance measuring device for the rear of the car, when measuring the objects between two sensors, there is an error between the distance to the bumper and the measuring distance,When the train line is changed, is there any problem of alarm conflict function,The invention transmits ultrasonic wave in one sensor and receives ultrasonic wave in another sensor, increases a new algorithm of separation measurement mode for measuring distance, and improves the distance precision of all parts of bumper,In case of lane change, it is helpful to the driver when the second lane changes by detecting the objects in the blind area of the rearview mirror.