Ultrasonic distance measuring device taking automatic parking searching and rear blind area monitoring of vehicle into consideration and method thereof

Abstract

The invention provides an ultrasonic distance measuring device taking automatic parking searching and rear blind area monitoring of a vehicle into consideration and a method thereof. The device includes a control unit, a stepping motor, an ultrasonic radar and an acousto-optic prompting unit. In a parking searching mode, the control unit drives the stepping motor to rotate the ultrasonic radar toa parking searching position, and a radar detection angle is set to calculate the distance of a side obstacle; in a blind area monitoring mode, the control unit drives the stepping motor to rotate theultrasonic radar to a blind area monitoring position, the radar detection angle is set to calculate the distance of an obstacle in a blind area, and when the measured distance of the obstacle is lessthan a preset value, a buzzer and a displayer are driven to make a prompt. The single ultrasonic radar is utilized to complete environment perception tasks in different areas, the stepping motor is utilized to drive the ultrasonic radar to rotate the change the beam axis of the ultrasonic radar to enable the single ultrasonic radar to detect different areas, and the automatic parking searching and rear blind area monitoring of the vehicle can be taken into consideration.

Description

technical field [0001] The invention belongs to the technical field of automobile intelligence and active safety, and in particular relates to an ultrasonic distance measuring device and a method thereof which take into account the automatic parking of vehicles and the monitoring of rear blind spots. Background technique [0002] Due to its low price, strong anti-interference, and simple principle, ultrasonic radar is widely used in automobiles, such as reversing warning, blind spot monitoring, and parking search. [0003] In the car automatic parking system, the configuration and installation position design of the ultrasonic radar sensor is one of the key technologies. The installation position of the ultrasonic radar for short-range blind spot monitoring in the car active safety system is similar to that of the side environment perception radar in the automatic parking system, but the detection area is quite different. [0004] In blind spot monitoring, the existing sing...

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Problems solved by technology

[0004] In the blind spot monitoring, the existing single-line lidar is difficult to realize the blind spot monitoring function of the vehicle, and the use of multi-line lidar for blind spot monitoring will undoubtedly greatly increase the system cost

[0005] Configuring multiple radar sensors in a small area will lead to a decrease in the anti-jamming performance of the radar system, and at the same time, the difficulty of installation and layout and the cost of the whole vehicle will be greatly increased

[0006] At present, there is a radar library search technology installed in front of the vehicle, but the installation in the front cannot monitor the rear blind area. To realize the detection of the rear blind area, multiple radars need to be arranged

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