Automatic parking control method

A technology for automatic parking and control methods, which is applied to control devices, vehicle components, reflection/re-radiation of radio waves, etc., can solve the problems of the decline in the success rate of searching for parking spaces and the inability to apply to all scenarios, so as to improve the success rate of parking. , the effect of increasing the cost of components

Pending Publication Date: 2022-02-15
DONGFENG MOTOR GRP
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Problems solved by technology

[0005] At present, ultrasonic waves detect obstacles based on sound wave reflection. In order to ensure the detection success rate and reduce false detections, its parameters are usually set to a fixed value. However, in the process of searching for parking spaces, fixed radar parameters will not be applicable to all scenarios. For example, gravel roads, rainy days, high temperature and other working conditions, the success rate of searching for parking spaces is greatly reduced

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Embodiment Construction

[0044] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0045] Ultrasound detects the distance through the echo reflected by the object. The echo is converted into electrical energy by the transducer and amplified. If the energy is greater than the set threshold, the object is confirmed to be detected and fed back to the automatic parking assistance system. Detection accuracy is affected by object volume, surface shape, surface material, etc. Therefore, when the vehicle is on an uneven road surface (such as a gravel road), o...

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Abstract

The invention discloses an automatic parking control method, which comprises the following steps of: after an automatic parking function is started, initializing a radar threshold value, acquiring humidity, temperature, rainfall and gradient information of a position where a vehicle is located in real time, correcting the radar threshold value in real time according to the acquired humidity, temperature, rainfall and gradient information, and performing automatic parking control on the vehicle based on the corrected radar threshold until parking is finished. The radar threshold value is corrected by combining an existing physical sensing part of the vehicle with a parking controller, the part cost is not increased, the false detection rate of the radar in special environments such as gravel road surfaces and rainy working conditions is reduced, and the radar ranging precision and the parking success rate of the parking auxiliary system are improved.

Description

technical field [0001] The invention belongs to the technical field of automobile control, and in particular relates to an automatic parking control method. Background technique [0002] With the improvement of people's living standards, cars are becoming more and more popular. The continuous increase of urban construction facilities has increased traffic congestion and reduced parking space. The narrow parking space increases the difficulty of parking, especially for inexperienced novices, and the demand for automatic parking assistance has greatly increased. [0003] Automatic parking assistance includes automatic parking search and automatic parking control functions. When searching for parking spaces, the environment sensing components are used to identify and calculate the parking space information. The sensing components include ultrasonic sensors, millimeter wave sensors, cameras, and laser sensors. During automatic parking control, the system controls the horizont...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/06G01S13/931
CPCB60W30/06G01S13/931B60W2555/20B60W2552/15G01S2013/9314
Inventor 张焕期方强何思尤敏冯佩
Owner DONGFENG MOTOR GRP
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