Automatic parking system parking space detection method based on ultrasonic distance measurement technology

A technology of automatic parking and parking space detection, which is applied in the direction of vehicle components, external condition input parameters, control devices, etc., can solve traffic accidents, pollution, congestion and other problems, and achieve travel time saving, high theoretical significance and operability, The effect of improving efficiency

Pending Publication Date: 2021-10-29
SOUTHEAST UNIV
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Problems solved by technology

[0002] The number of cars in our country has increased rapidly, which has brought great convenience to residents, but it has also caused problems such as traffic accidents, pollution, congestion, and parking

Method used

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  • Automatic parking system parking space detection method based on ultrasonic distance measurement technology
  • Automatic parking system parking space detection method based on ultrasonic distance measurement technology
  • Automatic parking system parking space detection method based on ultrasonic distance measurement technology

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Embodiment Construction

[0018] A parking space detection method for an automatic parking system based on ultrasonic ranging technology, such as figure 1 Shown:

[0019] (1) Read the literature to understand the basic principles and application scope of ultrasonic ranging technology. Schematic diagram of ultrasonic ranging technology image 3 shown.

[0020] The calculation of the distance between the ultrasonic emission position and the obstacle is shown in formula (1) and formula (2):

[0021]

[0022] L=v*t / 2 (2)

[0023] Among them, v represents the propagation velocity of ultrasonic waves in the air (m / s); t represents the time (s) from transmission to reception of ultrasonic waves; L represents the actual distance (m) of ultrasonic waves from the transmitting position to the receiving position; c represents the distance of the air medium temperature (°C).

[0024] (2) if figure 2 As shown in (a) and (b), the length of the vehicle ① is x r , with a width of y r , driving from left to ...

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Abstract

The invention discloses an automatic parking system parking space detection method. The parking space detection method mainly comprises the following steps: (1) deeply understanding a distance measurement mechanism and an application range of an ultrasonic distance measurement technology; (2) carrying out hypothesis, and selecting parameters applied by the distance measurement technology; and (3) analyzing a distance measurement result and performing practical application. According to the method, whether a parking space exists on the roadside or not can be effectively detected, if yes, whether the size of the parking space meets the size of a vehicle or not is judged, and if yes, the automatic parking system can park the vehicle; and if no parking space exists or the size of the parking space does not meet the size of the vehicle, the vehicle continues to run and detect until the parking space is found and parking is completed, and a theoretical basis is provided for promoting development of the automatic driving technology. According to the invention, the automatic driving technology and the parking space detection technology are fully combined, the automatic driving vehicle parking system is realized, the travel time of the user is saved, the automatic driving efficiency is improved, and the development of the automatic driving and automatic parking technology can be effectively promoted.

Description

technical field [0001] The invention relates to the field of automatic driving, in particular to a detection method for a parking space in an automatic parking system based on ultrasonic ranging technology. Background technique [0002] The number of cars in our country has increased rapidly, which has brought great convenience to residents, but it has also caused problems such as traffic accidents, pollution, congestion, and parking. Self-driving vehicles rely on advanced technologies such as the Internet, wireless communication technology, and cloud computing. The automatic driving of vehicles can greatly reduce safety accidents, alleviate traffic congestion, reduce traffic pollution, and improve the rational use of parking resources. The parking system is a very important issue for automatic driving. Scientifically and rationally developing the automatic driving parking system will help save users' time and improve user efficiency. Therefore, the parking system is very i...

Claims

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Application Information

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IPC IPC(8): B60W30/06
CPCB60W30/06B60W2420/54B60W2554/801
Inventor 王炜刘毅余静财
Owner SOUTHEAST UNIV
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