Visual parking assist system with continuously variable track and control method thereof

Abstract

The invention relates to the field of automotive electronics, in particular to a visual parking assist system with a continuously variable track and a control method thereof. The visual parking assist system comprises a back vision camera, a steering wheel corner sensor and a processing and display device, wherein the processing and display device comprises a CAN (controller area network) bus information receiving and dispatching module, a central processing unit, a video processing module, a storage module and a liquid crystal display; the steering wheel corner sensor is connected with a steering wheel, and is connected with the CAN bus information receiving and dispatching module through a CAN bus; the central processing unit is respectively connected with the CAN bus information receiving and dispatching module, the storage module and the video processing module; and the video processing module is respectively connected with the back vision camera and the liquid crystal display. The visual parking assist system has the advantages that: 1, the system structure is simplified, the cost of a hardware and the cost of a wiring harness are reduced, and the system reliability is improved; 2, the vehicle running track is predicated in a real-time manner with high accuracy; and 3, a driver can observe a vehicle parking condition directly and clearly so as to realize safety parking.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to a visual parking assistance system with continuously changing tracks and a control method thereof. Background technique [0002] When the car is reversing, the driver cannot see the situation behind the vehicle due to the occlusion of the vehicle body, causing a greater potential safety hazard. In order to solve this problem, there are currently several types of solutions: [0003] (1) Install an ultrasonic sensor on the bumper at the rear of the car, use the characteristics of ultrasonic reflection to detect obstacles behind the car, and use buzzer alarms, digital tube displays, etc. to prompt the driver of the detection results. This scheme is greatly affected by the external environment and the characteristics of obstacles, and some special obstacles cannot be recognized, and there is still a risk of collision; [0004] (2) Install a camera behind the car to directly di...

AI Technical Summary

Problems solved by technology

This solution can solve the shortcomings of the aforementioned solutions (1) and (2), but it needs to add a controller, which increases the hardware cost and wiring harness cost

In addition, in the existing schemes, the predicted trajectory lines are mostly obtained by calling the database. The database is an array of predicted trajectory lines corresponding to some specific steering wheel angle values. The steering wheel angle values ​​that can be accurately corresponded to are limited discrete values. For For other steering wheel angle values, you can only obtain its approximate value in the database before calling the predicted trajectory, which will lead to errors in the predicted trajectory and affect the accuracy of the system

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