Automatic parking system and parking space recognition method

Abstract

The invention discloses an automatic parking system and a parking space recognition method. A sensor signal processing unit controls in real time and receives a reflected wave signal of an ultrasonicsensor in real time in a hard wire connection mode, converts the signal into a corresponding distance signal and sends the distance signal in a CAN communication mode to an electric power steering system. Compared with a conventional automatic parking controller, the automatic parking system needs to calculate complex logic, the processing work of the sensor signal processing unit is simpler, so that no complicated electrical structure is required and the cost is lower; hardware conditions of the electric power steering system are fully utilized, a function button command and the distance signal of the ultrasonic sensor are received, parking position searching and automatic parking functions can be implemented, the cost of the electric power steering system is not increased, the cost of the whole system is reduced, and the automatic parking system is high in execution precision, is controlled stably and is high in safety and suitable for various electric power steering systems.

Description

technical field [0001] The invention relates to the field of automatic parking systems, in particular to an automatic parking system and a parking space recognition method. Background technique [0002] As consumers have more and more requirements for driving assistance functions, the automatic parking system has gradually become a mandatory configuration item for many models. In order to improve the competitiveness of products, OEMs generally require suppliers to provide cost-effective products. [0003] The traditional automatic parking system configuration, as introduced in CN106608258A and CN106043282A patents, generally requires 10 to 12 ultrasonic sensors, and the parking control module collects external signals, calculates the parking trajectory and strategy, and sends instructions to the electric power steering system to realize the parking function. [0004] However, on a vehicle equipped with a traditional parking system, the parking controller and the electric po...

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Problems solved by technology

[0007] However, different obstacles have different curvatures and the beam angle of the ultrasonic sensor will cause errors in the measurement value of the ultrasonic sensor. If the distance detected by the ultrasonic sensor is not corrected, the parking position cannot be effectively identified.

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