Vehicle water-wading detection method andsystem and vehicle-

Abstract

The invention provides a vehicle water-wading detection method and system and a vehicle. A vehicle water-wading detection method includes detecting a posture of a vehicle body; detecting the verticaldistance between the body reference position and the water surface; determining a vertical distance between a vehicle body target position and the water surface- based on a vertical distance between the vehicle body reference position and the water surface and the vehicle body attitude. The method of the invention is not affected by the change of the vehicle chassis height when the vehicle is unloaded and loaded, and can accurately carry out vehicle wading detection no matter how the vehicle chassis height is changed, and has the advantages of accurate and reliable vehicle wading detection, thereby improving driving safety.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle wading detection method, system and vehicle. Background technique [0002] In order for the driver to understand the depth of the vehicle's wading, installing sensors on the vehicle to detect water conditions can effectively improve the safety of the vehicle's wading process. In related technologies, such as the one disclosed in Chinese patent application No. A system capable of detecting the water depth when the vehicle is wading. The system for detecting the water depth when the vehicle is wading uses a water level sensor installed on the rearview mirror to detect the height of the water surface at the position of the rearview mirror along the vertical direction of the vehicle body, combined with the posture of the vehicle body and the chassis The height and other information can be used to calculate the water depth at the front or rear of the vehicle. [0003] T...

AI Technical Summary

Problems solved by technology

[0003] This system for detecting the depth of water when the vehicle is wading has the following disadvantages: although it can detect the wading situation of the vehicle, it needs to follow the position of the rearview mirror along the water surface height in the vertical direction of the vehicle body, the posture of the vehicle body and the height of the chassis (i.e. the height of the rearview mirror). The position along the vertical direction of the vehicle body to the height of the ground) and other information are calculated in real time, which is time-consuming

However, since the chassis height of the vehicle will inevitably change more or less when the vehicle is unloaded or loaded, there is a deviation in the water depth at the front or rear of the vehicle calculated by combining the chassis height of the fixed value, which will affect the detection accuracy.

In addition, when the attitude of the vehicle changes, the water surface height of the position of the rearview mirror detected by the water level sensor along the vertical direction of the vehicle body, if the inclination angle between the vehicle and the horizontal plane is too large, the final detection error will also be too large, and when the inclination angle is too large, Water level sensors can easily miss the echo, rendering this method useless

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