Initial carport-searching offset correction method of automatic parking system

A technology of automatic parking and correction method, applied in the field of automatic parking system, to achieve the effect of reducing trouble

Inactive Publication Date: 2012-07-04
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the existing problem that the vehicle A3 parked in front of the target parking space deviates, that is, the vehicle longitudinal axis L3 is not parallel to the side parking limit L2, the target vehicle will also have a similar situation, the patent of the present invention provides an analysis and correction method method to make the target vehicle A0 accurately park at the target parking space

Method used

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  • Initial carport-searching offset correction method of automatic parking system
  • Initial carport-searching offset correction method of automatic parking system
  • Initial carport-searching offset correction method of automatic parking system

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Embodiment Construction

[0021] specific implementation plan

[0022] Such as figure 2 As shown, the driver first turns on the switch to connect the 12V DC power supply of the vehicle battery to power on the automatic parking system and start the initial library search. The software initializes the control port according to the configuration, connects the ultrasonic sensor to the 12V DC power supply, and starts Controller port 1 capture function. The capture function refers to the ability to identify the rising and falling edges of the external input square wave signal, and obtain the width of the square wave pulse by interrupting the internally started timer. Such as figure 2 As shown, the ultrasonic sensor automatically transmits a 48KHz ultrasonic wave every 40ms, and receives the echo signal reflected from the obstacle. After being processed into a digital signal inside the ultrasonic sensor, it is transmitted to the controller port 1 through the connecting wire. This port has been Configur...

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Abstract

The invention relates to a method for determining a virtual straight line L5 parallel to side parking limit L2 according to the dynamic interval between a side road-side parked vehicle and a target vehicle in the carport-searching process of an automatic parking system. The straight line is an important reference for path planning. In particular, when a vehicle in front of the target parking space is not parallel to the side parking limit, the method is used for assisting a vehicle in relocating the target parking space in the process automatic parking, the relative distance between the target vehicle and a parked vehicle is dynamically captured through an ultrasonic sensor, the collected data are processed according to specific algorithm, and the processed data are used for formulate a reasonable parking path so as to finish automatic parking.

Description

technical field [0001] The invention relates to an automatic parking system, and specifically provides a method for analyzing and correcting the problem of inaccurate path planning of a target parking space caused by non-parallel deviations between front and rear parked vehicles and side parking boundaries during initial parking search. Background technique [0002] The automatic parking system refers to a system in which the driver does not need to operate the steering wheel to automatically park the vehicle in place after the system is activated and a valid parking space is found. Its working process: the information collection system collects relevant information such as the size of the parking space and the vehicle's own coordinates through sensors, and generates data as the input of the system; the information processing system judges whether the vehicle can be parked in the parking space provided by the calculation based on these data information. Space, and generate...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/06
Inventor 江浩斌
Owner JIANGSU UNIV
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